Polyurethane-polyurea based microporous coating

FIELD: chemistry.

SUBSTANCE: invention relates to a method of producing microporous coatings, wherein a composition is foamed and dried, said composition containing an aqueous, anionically hydrophilised polyurethane dispersion (I) and a cationic coagulant (II), wherein the cationic coagulant (II) is a polymer with number-average molecular weight ranging from 500000 to 50000000 g/mol, which has structural links of general formulae and ,

where R denotes C=O, -COO(CH2)2- or -COO(CH2)3- and X- denotes a halide ion. The invention also describes a microporous coating obtained using said method, a composition for producing microporous coatings and a substrate coated with said microporous coating.

EFFECT: production of microporous coatings using a novel method, having good mechanical properties and a thin microporous structure.

10 cl, 9 ex, 1 tbl

 

The invention relates to a new microporous coatings and method of making microporous coatings.

In the field of coating textile fabrics polyurethane in a variety of forms use the solution with a high solids content, aqueous dispersions is traditionally of great importance. With this trend in the field of coatings, primarily in the interests of ecology, for many years, more intense is sent from solvent systems with high solids content and particularly to aqueous systems.

The situation is somewhat different for polyurethane imitation. These microporous coatings on modern technical condition in most cases are still in the so-called technology coagulation in a liquid medium.

In the process of coagulation liquid, widely used to date, textile covered dissolved in organic solvents (e.g. dimethylformamide) with polyurethane or impregnated them. Coagulation is carried out directly by immersion in a water bath. The obtained coatings are soft and good permeability to water vapor. The method is limited due to the specific properties of the organic solvent (solvent ability, Miscibility with water and other) in the application of this solvent.

The disadvantages of this innovation is about method are required and measures for safe handling, for processing and recycling for further use very large amounts of solvent.

Alternative methods, such as coagulation by evaporation, which is based on the use of volatile solvent and a less volatile insoluble component for binders, while sparing the first heat evaporates the solvent, so that the binder due to an increasing share of the insoluble component promotes coagulation; however, the disadvantages of these methods, in addition to needing large quantities of solvent are excessive complexity and very limited capacity optimization using process parameters.

Apply salt, acid or other electrolytic coagulation is also carried out by immersing the coated substrate or, as in the case of gloves, first dipping in the dispersion, and then in a concentrated salt solution, or a dilute acid, water or other fluid, and the binder contributes to coagulation due to the high content of the electrolyte. The disadvantages of this method are complex technical execution and, above all, in a high yield of contaminated wastewater.

The method of using the process of terpolymerization, after which covered with isocyanate-focali what arisato the substrate is immersed in water, and then, when the removal of CO2it turns out polyurea with a porous structure, is also expected to be disadvantageous way, among other things, due to the very high reactivity of the compositions and the associated short processing times.

Coagulation, it is possible to heat-sensitive incapable of structuring binders by increasing the temperature, often leads to unacceptable results of the coating process.

In DE-a 19856412 describes how coagulation in the aquatic environment, based on the cured aqueous polyurethane dispersions, which dispenses with an organic solvent or with only small its contents and without the use of a salt of the acid or other electrolytic bath, and the result is a simple process. The described method is suitable for coating not microporous compact films with reduced thickness of the layer.

In DE-A 10300478 describes a method, based mainly on water capable of structuring the polyurethane dispersions according to which the latter are applied to the textile surface in the form of foam under the action of heat at temperatures from 100°C to 110°C coagulated under the influence of special samples. This method is used for the manufacture of compact coatings, which are used, for example, in the form of printed artificial the military suede in cars and upholstery.

Fabrication of microporous coatings with high surface by water coagulation-based adverse environmental aqueous dispersions of polyurethane-urea (PUR-dispersion) at the moment is not yet solved satisfactorily and is therefore an objective of the present invention.

Adding conventional coagulants to PUR dispersions leads to spontaneous precipitation of polyurethane and therefore not be a suitable method of manufacture suitable for glazing paste.

It has been unexpectedly found that is suitable for glazing paste can be received with use of special PUR dispersions (I) in combination with a cationic coagulant (II).

In addition, it was found that the microporous covering a large area can be manufactured by a new process comprising the following process steps:

A. Manufacture of the composition for coating (1)containing spreadable aqueous anionic hidrofilicos dispersion of polyurethane-polyurea (I) and a cationic coagulant (II).

C. the Foaming composition (1) while, at least partial coagulation of the foam at low temperature.

C. Application of foam and at least partially coagulated composition (1) on a textile basis.

D. Drying and, if necessary,

E. securing noobraznoe matrix by additional drying at elevated temperature.

The object of the present invention is also a method of manufacture suitable for glazing coating composition (1), characterized in that its components are selected from the following groups:

(I) anionic water Hydrophilidae polyurethane dispersion with a content of groups-COO-, -SO3-or PO32-from 0.1 to 15 milliequivalents per 100 g of solid polymer;

II) cationic coagulants, preferably containing structural elements in accordance with the General formula (2), particularly preferred structural elements in accordance with the General formula (1) and General formula (2),

where

R is C=O, -COO - (CH2)2- or-COO - (CH2)3and

X-means halide ion, preferably chloride;

III) a foaming substance;

IV) setcoursename substance and,

V) optionally, a thickener,

and before step B) are mixed in the usual way, in any order.

Contained in the compositions according to the invention aqueous, anionic Hydrophilidae polyurethane dispersions (I) can be obtained in the following ways:

A) prepolymers with isocyanate groups from

A1) organic polyisocyanates;

A2) polymeric polyols with srednekislye molecular weights from 40 to 8000 g/mol, mainly from 400 to 6000 g/mol and particularly preferably from 600 to 3000 g/mol and a functionality of OH groups is from 1.5 to 6, preferably 1.8 to 3, particularly preferably from 1.9 to 2.1, and,

A3) optionally, compounds with hydroxyl groups with molecular weights of from 32 to 400 g/mol, and,

A4) optionally, a reactive to isocyanate groups, anionic or partially anionic and/or optionally nonionic funds with hydrophilic properties

B) free NCO groups are then completely or partially converted in the lengthening of the chain,

B1) optionally, using compounds with amino groups with molecular weights of from 32 to 400 g/mol, and/or

B2) compounds reactive to isocyanate groups, preferably anionic or potentially anionic gidrofilnami funds with amino groups, and thus obtained prepolymers before stage C), during it or after it is dispersed in water, and is contained in some cases potentially ionic groups by partial or complete exchange with the neutralizing substance is transferred in ionic form.

To achieve anionic hydrophilicity on stage A4) and/or B2), use tools, providing Hydrophilidae properties that have such acting NCO-groups as amino, hydroxy or thiol group,and in addition, COO-or-SO3-or-PO32-as anionic groups or their partially or fully protonated ACI-forms as potentially anionic groups.

Preferred aqueous, anionic polyurethane dispersions (I) are of less relevance to the hydrophilic anionic groups, preferably from 0.1 to 15 milliequivalents per 100 g of the hard polymer.

In order to achieve good stability, sedimentation, srednesemennyh the particle size of the polyurethane dispersion (I), measured by spectroscopy with laser correlation, should be preferably less than 750 nm, more preferably less than 500 nm and particularly preferably less than 400 nm.

The ratio of NCO-groups of compounds of component A1) to NCO-reactive groups such as amino, hydroxy or thiol group of the compounds of component A2) to A4) in the manufacture of NCO-active prepolymers, is 1.05 to 3.5, preferably 1.2 to 3.0, and particularly preferably from 1.3 to 2.5.

Compounds with amino groups on stage) are used in an amount such that the equivalent ratio of isocyanate-reactive amino groups of these compounds to the free isocyanate groups of the prepolymer was 40-150%, preferably from 50 to 120%, particularly preferably from 60 to 120%.

Suitable polyisocyanates of component A1) are known to the expert as aromatic the ski, fatty-aromatic, aliphatic or cycloaliphatic polyisocyanates with a functionality NCO-groups 2.

Examples of such suitable polyisocyanates are 1,4-butylenediamine, 1,6-hexamethylenediisocyanate (HDI), isophorone-diisocyanate (IPDI), 2,2,4 and/or 2,4,4-trimethylhexamethylene-diisocyanate, the isomeric bis(4,4'-isocyanatophenyl)-methanes or mixtures thereof with any content of isomers, 1,4-cyclo-exilanation, 1,4-delete the entry, 2,4 - and/or 2,6-tolylenediisocyanate, 1,5-naphthylenediisocyanate, 2,2'- and/or 2,4'- and/or 4,4'-diphenylmethanediisocyanate, 1,3 - and/or 1,4-bis-(2-isocyanato-prop-2-yl)-benzene (TMXD1), 1,3-bis-(isocyanatomethyl)benzene (XDI), and alkyl-2,6-diisocyanatohexane (lizenzierte) with C1-C8-alkyl groups.

In addition to the above-mentioned polyisocyanates may also be used in the corresponding fractions of modified diisocyanates with uretdione, which, urethane, allophanate, biuret, iminoimidazolidine and/or oxadiazolones structure, and can also be unmodified polyisocyanate with more than 2 NCO groups per molecule, for example, 4-isocyanatomethyl-1,8-octadienal (nonnational) or triphenylmethane-4,4',4"-triisocyanate.

Preferably it is about the polyisocyanates or mixtures of polyisocyanates of the above type with isocyanate groups, exclusively salivations and/or cycloaliphatic communication, and the average functionality of the mixture at NCO-groups from 2 to 4, preferably from 2 to 2.6 and particularly preferably from 2 to 2.4.

Particularly preferably used in A1) 1,6-hexamethylenediisocyanate, ISO-frondescence, the isomeric bis(4,4'-isocyanatophenyl)methanes and mixtures thereof.

In A2) are applied polymer polyols with srednegalechny molecular weight Mnfrom 400 to 8000 g/mol, preferably from 400 to 6000 g/mol and particularly preferably from 600 to 3000 g/mol. Their functionality by OH-groups is preferably from 1.5 to 6, more preferably from 1.8 to 3 and particularly preferably from 1.9 to 2.1.

Such polymeric polyhydric alcohols known in the technology of polyurethane varnishes are complex polyether polyols polyacrylonitrile, poliuretanoviy, polycarbonatediol, simple polyether polyols complex politicalization, prioritypriority, complex prioritypriority, simple prioritypriority, polyuretaanipaksuntajat and the location for the complex. They can be used in A2) individually or in any mixtures with one another.

Such complex polyether polyols are known polymers obtained by polycondensation of diola or, if necessary, from triplets and terauley, and from dicarboxylic which the slot, or, if necessary, from three - and tetracosanoic acids or hydroxycarbonic acids or lactones. Instead of free polycarboxylic acids to produce complex polyether polyols can also be used the corresponding anhydrides of polycarboxylic acids or the corresponding esters of polycarboxylic acids, lower alcohols.

Examples of suitable diola are ethylene glycol, butyleneglycol, diethylene glycol, triethylene glycol, polyalkyleneglycol as polyethylene glycol, then 1,2-propandiol, 1,3-propandiol, butanediol(1,3), butanediol(1,4), hexanediol(1,6) and isomers, neopentylglycol or neopentylglycol ether hydroxypivalic acid, and preferred are hexanediol(1,6) and isomers, neopentylglycol and neopentylglycol ether hydroxypivalic acid. In addition, can also be used such polyole as trimethylolpropane, glycerin, aritra, pentaerythritol, triamcinolona or trietoksisililpropil.

As dicarboxylic acids can be used phthalic acid, isophthalic acid, terephthalic acid, tetrahydrophtalic acid, hexahydrophthalic acid, cyclohexanecarbonyl acid, adipic acid, azelaic acid, sabotinova acid, glutaric acid, tetrachlorophthalic acid, maleic acid, fumaric acid, taconova acid is one malonic acid, cork acid, 2-methylestra acid, 3,3-diacylglycerol acid and/or 2,2-dimethylxanthene acid. As the source of the acids can also be used the corresponding anhydrides.

If the average functionality intended for the formation of esters polyala more than 2, can optionally also be used such monocarboxylic acids as benzoic acid and hexacarbonyl acid.

Preferred acids are aliphatic or aromatic acids of the above type. Especially preferred adipic acid, isophthalic acid and, in some cases, trimellitate acid.

Hydroxycarbonate acids, which can be used as a component of the reaction in the manufacture of complex polyetherpolyols with terminal hydroxyl groups are, for example, gidroksicarbonata acid, hydroxipropionic acid, hydroxydecanoic acid, hydroxystearate acid and the like. Suitable lactones are caprolactone, butyrolactone and the homologue. Preferred caprolacton.

Equally A2) can be applied polycarbonates containing hydroxyl groups, preferably polycarbonatediol with srednegalechny molecular weight Mnfrom 400 to 8000 g/mol, preferably from 600 to 3000 g/mol. They floor which are stated in the reactions of derivatives of carbonic acid, such as diphenylcarbonate, dimethylcarbonate or phosgene, with polyhydric alcohols, preferably with diatomic alcohols.

Examples of such diola are ethylene glycol, 1,2 - and 1,3-propandiol, 1,3-and 1,4-butanediol, 1,6-hexanediol, 1,8-octandiol, neopentylglycol, 1,4-bishydroxycoumarin, 2-methyl-1,3-propandiol, 2,2,4-trimethylpentanediol-1,3, dipropyleneglycol, polypropyleneglycol, dibutylamino, polietilenglikoli, bisphenol a and lactone-modified dioli named above.

Preferably polycarbonatediol contains 40-100 wt.% hexanediol, preferably 1,6-hexanediol and/or derivatives hexandiol. Such derivatives hexandiol in addition to the terminal OH groups are groups of simple and complex esters. These derivatives are obtained by reaction of hexandiol with excessive caprolactone or by the esterification of hexandiol with the formation of ethers and transformation in di - or tridecylalcohol.

Instead of pure polycarbonatediol or in addition to them in A2) can be used as a simple polyester-polycarbonatediol.

Polycarbonates containing hydroxyl groups are preferably linear structure.

In A2) can also be used polyols based on polyethers.

For example, usable are known in polyurethane chemistry simple polytetramethylene every, obtained by polymerization of tetrahydrofuran by disclosing cationic ring.

Suitable simple polyether polyols are also known addition products of styrene oxide, ethylene oxide, propylene oxide, butylene oxide and/or epichlorohydrin di - or polyfunctional original molecules. Simple polyether polyols based at least on a partial accession ethylene oxide to di - or polyfunctional original molecules can also be used as component A4) (neinogennye Hydrophilidae funds).

Suitable source molecules can be all known from the prior art compounds, such as water, butyldiglycol, glycerin, diethylene glycol, tri-methylpropan, propylene glycol, sorbitol, Ethylenediamine, triethanolamine, 1,4 - butanediol. The preferred source molecules are water, ethylene glycol, propylene glycol, 1,4-butanediol, diethylene glycol and butyldiglycol.

Particularly preferred forms of receipt of the polyurethane dispersions (I) contain as component A2) a mixture of polycarbonatediol and polytetramethylene, and in this mixture, the content of polycarbonatediol is mixed in the form of 20-80 wt.%, while the share of polytetramethylene have 80-20 wt.%. The preferred content is of tetramethylthiourea is 30-75 wt.%, and the content of polycarbonatediol 25-70 wt.%. Especially preferred is the content of polytetramethylene in 35-70 wt.% and the content of polycarbonatediol in 30-65 wt.%, accordingly, provided that the sum of the weight percent of polycarbonatediol and polytetramethylene is 100%, and the total content of polycarbonatediol and polytetramethylene component A2) is at least 50 wt.%, preferably 60 wt.% and particularly preferably 70 wt.%.

Connection of components A3) have a molecular weight of from 62 to 400 g/mol.

In A3) can be used polyols mentioned range of molecular weights with the carbon atoms to 20 units as ethylene glycol, diethylene glycol, tri-ethylene glycol, 1,2-propandiol, 1,3-propandiol, 1,4-butanediol, 1,3-butyleneglycol, cyclohexanediol, 1,4-cyclohexanedimethanol, 1,6-hexanediol, neopentylglycol, simple hydroxymandelonitrile, bisphenol a (2,2-bis(4-hydroxyphenyl)-propane), hydrogenated bisphenol A (2,2-bis(4-hydroxycyclohexyl)propane), trimethylolpropane, glycerin, pentaerythritol, and also any mixtures of each other.

Suitable diols based on esters of the mentioned range of molecular weights, such as α-hydroxybutyl-ε-gidroksicarbonata acid ester, ω-hydroxyhexyl-γ-hydroxipropionic acid ester,adipic acid-(β-hydroxyethyl)ester or terephthalic acid bis(β-hydroxyethyl)-ether.

In addition, A3) can also be mono-functional, isocyanate reactive compounds containing hydroxyl groups. Examples of such monofunctional compounds are ethanol, n-butanol, etilenglikolevye, diethylethylenediamine, etilenglikolevye, diethyleneglycolmonomethylether.svg, propilenglikolmonostearata, dipropylenetriamine, dipropylenetriamine, dipropyleneglycol o-npropylether, propilenglikolmonostearata, dipropylenetriamine, tripropyleneglycol, 2-ethylhexanol, 1-octanol, 1-dodecanol, 1-hexadecanol.

Preferred compounds of component A3) are 1,6-hexanediol, 1,4-butanediol, neopentylglycol and trimethylolpropane.

Under anionic or potentially anionic Hydrophilidae compounds of component A4) refers to all compounds which have at least one isocyanate reactive group such as hydroxyl group, and at least one functionality, such as-COO-M+, -SO3-M+, -PO(O-M+)2with M+i.e., for example, a metal cation, H+, NH4+, Other3+where R may be C1-C12-alkyl residue, a C5-C6-cycloalkenyl balance and/or C2-C4-hydroxyalkyl residue, which when cooperation is the interaction with aquatic environments provides a pH-dependent equilibrium dissociation and thus can be neutral or negatively charged. Suitable anionic or potentially anionic Hydrophilidae compounds are mono - and dihydroxycinnamate acid, mono - and hydroxysulfonic acid, and mono - and dihydroxyacetone acids and their salts. Examples of such anionic or potentially anionic gidrofilnami funds are dimethylolpropionic acid, dimethylaniline acid, hydroxypivalic acid, malic acid, citric acid, glycolic acid, lactic acid and propoxycarbonyl the reaction product 2-butandiol and NaHSO3as described in the patent DE-A 2 446 440, p.5-9, formula I-III. Preferred anionic or potentially anionic Hydrophilidae means are such of the above types which have carboxylate groups and carboxylic acid and/or sulphonate groups.

Particularly preferred anionic or potentially anionic Hydrophilidae means A4) are those which contain carboxylate groups and carboxylic acids as ionic or potentially ionic groups, such as dimethylolpropionic acid, dimethylaniline acid and hydroxypivalic acid and their salts.

Suitable Hydrophilidae compounds of component A4) are, for example, a simple polyoxyalkylene that contain, at m is re, one hydroxy or amino group, preferably at least one hydroxy-group.

Examples are monoparty hydroxyquinoline of polyalkyleneglycol with average 5-70, preferably 7-55, units of ethylene oxide per molecule, which can be obtained in a known manner by alkoxysilane suitable source of molecules (for example, in the Encyclopedia of technical chemistry Ullman, 4th edition, volume 19, Izd-vo Chemie, Weinheim, p.31-38).

This can be either pure polyethylenoxide, or mixed polyalkyleneglycol containing at least 30 mol.%, preferably 40 mol.%, units of ethylene oxide with respect to all contained units monoxide alkylene.

Especially preferred nonionic compounds are monofunctional mixed polyalkyleneglycol with 40-100 mol.% units of ethylene oxide and 0 to 60 mol.% units of propylene oxide.

Suitable source molecules for such nonionic gidrofilnami funds are saturated monoparty as methanol, n-propanol, isopropanol, n-butanol, Isobutanol, sec-butanol, the isomeric pentanol, hexanol, octanol and nonanol, n-decanol, n-dodecanol, n-tetradecanol, n-hexadecanol, n-octadecanol, cyclohexanol, the isomeric methylcyclohexanols or hydroxymethylcellulose, 3-ethyl-3-hydroxyethyloxy or Tetra is atropurpureus alcohol, dietilenglikoluretan, as, for example, diethyleneglycolmonomethylether.svg;

unsaturated alcohols as allyl alcohol, 1,1-dimethylallyl alcohol or oleic alcohol; aromatic alcohols as phenol, the isomeric Cresols or methoxyphenols; fatty-aromatic alcohols such as benzyl alcohol, anise alcohol or cinnamic alcohol; secondary monoamines, as dimethylamine, diethylamine, dipropylamine, Diisopropylamine, dibutylamine, bis(2-ethylhexyl)-amine, N-methyl - and N-ethylcyclohexylamine or dicyclohexylamine, and also heterocyclic secondary amines like morpholine, pyrrolidine, piperidine or 1H-pyrazole.

The preferred source molecules are saturated monoparty above-mentioned type. Particularly preferably used as a source of molecules diethylethylenediamine or n-butanol.

Suitable for reaction alkoxysilane oxides alkylene are, first and foremost, ethylene oxide and propylene oxide, which can be used for the reaction of alkoxysilane in any order or even in a mixture.

As component B1) may be applied di - or polyamine as 1,2-Ethylenediamine, 1,2 - and 1,3-diaminopropane, 1,4-diaminobutane, 1,6-diaminohexane, ISO-trondalen, mixture of isomers of 2,2,4 - and 2,4,4-trimethylhexamethylenediamine, 2-methylpentylamine, Diethylenetriamine, three who minonon, 1,3 - and 1,4-xylylenediamine, α,α,α',α'-tetramethyl-1,3 - and -1,4-xylylenediamine 4,4-diaminodicyclohexylmethane and/or dimethylethylenediamine. It is also possible the use of hydrazine or hydrazides, such as dehydrated adipic acid. Preferred are ISOPHORONEDIAMINE, 1,2-Ethylenediamine, 1,4-diaminobutane, hydrazine and Diethylenetriamine.

In addition, as component B1) may also be used compounds which in addition to one primary amino groups are secondary amino groups, or addition of one amino group (primary or secondary) have an OH-group. For example, primary/secondary amines, such as diethanolamine, 3-amino-1-methylaminopropane, 3-amino-1-Ethylenediamine, 3-amino-1-cyclohexylamine, 3-amino-1-methylaminomethyl; alkanolamine as N-amino-ethyl-ethanolamine, ethanolamine, 3-aminopropanol, neopentanoate.

Further, as component B1) may also be used monofunctional isocyanate reactive compounds amines, such as methylamine, ethylamine, Propylamine, butylamine, octylamine, laurylamine, stearylamine, isononylphenol, dimethylamine, diethylamine, dipropylamine, dibutylamine, N-methyl-aminopropylene, diethyl (methyl)aminopropyl, morpholine, piperidine, or suitable substituted derivatives, amidine from secondary amines and monocarboxylic acids, monoketone secondary amines, n is ruinae/tertiary amines, as N,N-dimethylaminopropylamine.

Preferred compounds of component B1) are hydrazine, 1,2-Ethylenediamine, 1,4-diaminobutane, ISOPHORONEDIAMINE.

Under anionic or potentially anionic Hydrophilidae compounds include all compounds which have at least one isocyanate-reactive group, preferably one amine group and at least one functionality, such as-COO-M+, -SO3-M+, -PO(O-M+)2where M+for example, is a metal cation, H+, NH4+, Other3+and R, respectively, can be C1-C12-alkyl residue, a C5-C3-cycloalkyl balance and/or C2-C4-hydroxyalkyl residue, which upon contact with an aqueous medium leads to equilibrium dissociation is dependent on pH, and thus can be charged negatively or to remain neutral.

Suitable anionic or potentially anionic Hydrophilidae compounds are mono - or diaminocarbenes acids and their salts. As examples of anionic or potentially anionic gidrofilnami funds can be called N-(2-amino-ethyl)-β-alanine, 2-(2-amino-ethylamino)-econsultation, Ethylenediamine-propyl - or-butylsulfonyl, 1,2 - or 1,3-Propylenediamine-β-ethylsulfonyl, glycine, Alani is, taurine, lysine, 3,5-diaminobenzoic acid and the product attaching ACCESSORIES > and acrylic acid (EP-A 0916647, example 1). In addition, as anionic or potentially anionic hydrophiloidea funds may be used is known from the patent WO-A 01/88006 cyclohexanedicarboxylate (CAPS).

Preferred anionic or potentially anionic Hydrophilidae means of component B2) are of the above type, which have a carboxylate group or carboxylic acid and/or sulphonate groups as N-(2-amino-ethyl)-β-alanine, a salt of 2-(2-aminoethylamino)econsultancy or product attaching ACCESSORIES > and acrylic acid (EP-A 0916647, example 1).

To impart hydrophilic properties can also be used a mixture of anionic or potentially anionic gidrofilnami funds and nonionic gidrofilnami funds.

In a preferred form of execution of the components A1)to A4) and B1)to B2) for special polyurethane dispersions are taken in the following quantities, if the total of the individual components is equal to 100%:

5-40 wt.% component A1),

55-90 wt.% A2),

0.5 to 20 wt.% the sum of components A3) and B1)

0.1 to 25 wt.% the sum of components A4) and B2), and 0.1 to 5 wt.% anionic or potentially anionic gidrofilnami funds relative to the total amount of components A1)to A4) and B1)to B2) are used from A4)and/or B2).

In a particularly preferred form of execution of the components A1) to A4) and B1) to B2) for the manufacture of special polyurethane dispersions are taken in the following quantities, if the total of the individual components is equal to 100%:

5-35 wt.% components A1),

60-90 wt.% A2),

0.5 to 15 wt.% the sum of components A3) and B1).

0.1 to 15 wt.% the sum of components A4) and B2), and 0.1 to 4 wt.% anionic or potentially anionic gidrofilnami funds relative to the total amount of components A1)to A4) and B1)to B2) are used from A4) and/or B2).

In the most preferred form of execution for the manufacture of special polyurethane dispersions of the components A1)to A4) and B1)to B2) are taken in the following quantities, if the total of the individual components is equal to 100%:

10-30 wt.% components A1),

65-85 wt.% A2),

0.5 to 14 wt.% the sum of components A3) and B1)

0.1 to 13.5 wt.% the sum of components A4) and B2), and 0.5 to 3.0 wt.% anionic or potentially anionic gidrofilnami funds relative to the total amount of components A1)to A4) and B1)to B2) are used from A4) and/or B2.

The manufacture of anionic gidrofilnami polyurethane dispersions (1) can be performed in one or in several stages homogeneous exchange reaction or multistage reaction, partly in the dispersed phase. After fully or partially completed polyaddition A1)-A4) is the dispersed phase is I, emulsification or dissolution. Then, if necessary, is carried out following polyprionidae or modification in the dispersed phase.

Apply all known from the prior art methods, such as, for example, the method of mixing the prepolymers, the method acetaminophene way or dispersion melts. Preferably the application of the method of acetonuria.

To manufacture by way of acetaminophene usually taken completely or parts of components A2)to A4) and the components of the MDI A1) to obtain the isocyanate-functional polyurethane prepolymer and optionally diluted with a solvent miscible with water but inert towards isocyanate groups, and heated to temperatures in the range from 50 to 120°C. To accelerate the reaction accession isocyanate can be used are known in polyurethane chemistry catalysts.

Suitable solvents are the customary aliphatic, containing keto group solvents, such as acetone, 2-butanone, which can be added not only to the beginning of production, but also, if necessary, the parts at a later stage. Preference is given to acetone and 2-butanone.

You can also use other solvents, such as xylene, toluene, cyclohexane, butyl acetate, methoxypropylacetate, N-organic N-ethylpyrrolidin, rest ritali with groups of simple or complex ester, fully or partially distilled, or left in the form of a dispersion in the case of the use of N-methylpyrrolidone, N-ethylpyrrolidin. However, it is preferable not to use other solvents, in addition to the normal aliphatic containing ketogroup solvents.

Then also mixed with delicious not added to the beginning of the reaction of components A1)to A4).

Upon receipt of the polyurethane prepolymer from A1-A4), the quantitative ratio of isocyanate groups to isocyanate-reactive groups is 1.05 to 3.5, preferably of 1.2 to 3.0, particularly preferably from 1.3 to 2.5.

The reaction of converting the components A1)to A4) in the prepolymer is partially or completely, but preferably complete metamorphosis. Thus the polyurethane prepolymers containing free isocyanate groups are obtained in the form of a substance or in solution.

At the stage of neutralization for partial or complete conversion of potentially anionic groups in the anionic groups are used bases, such as tertiary amines, for example trialkylamines from 1-12, preferably 1-6, and particularly preferably 2 or 3 carbon atoms in each alkyl residue, or the Foundation of the alkali metals, such as the corresponding hydroxides.

An example of this are trimethylamine, triethylamine, methyldiethylamine, Tripropylamine, N-methylmorpholine, methyldiisopropanolamine, utilties the Propylamine and diisopropylethylamine. Alkyl residues can, for example, to include a hydroxyl group, as in dialkylaminoalkyl-, arcidiacono and trialkanolamines. As neutralizing means can be used, if necessary, and inorganic bases such as aqueous ammonia or sodium hydroxide or potassium.

Preferred are ammonia, triethylamine, triethanolamine, dimethylethanolamine or diisopropylethylamine, as well as sodium hydroxide and potassium hydroxide, particularly preferred sodium hydroxide and potassium hydroxide.

The number of bases is 50 and 125 mol.%, preferably from 70 to 100 mol.%, regarding the number intended to neutralize the acid groups. Neutralization can also be carried out simultaneously with the dispersion process, in which the dispersing water already contains a means of neutralization.

At the end of the process to the next stage of the method, the resulting prepolymer is dissolved, if it hasn't happened yet, or was only partial, with aliphatic ketones, such as acetone or 2-butanone.

When the elongation of the chain on stage) NH2- and/or NH-active components are partially or completely converted with the remaining isocyanate groups of the prepolymer. The elongation/termination circuit preferably before dispersion in water.

For for the arsenia circuit used conventional amines B1) reactivity towards isocyanate groups, such as methylamine, ethylamine, Propylamine, butylamine, octylamine, laurylamine, stearylamine, isononylphenol, dimethylamine, diethylamine, dipropylamine, dibutylamine, N-methylaminopropyl, diethyl(methyl)aminopropyl, morpholine, piperidine, or suitable substituted derivatives, amidine from secondary amines and monocarboxylic acids, monoketone secondary amines, primary/tertiary amines like N,N-dimethylaminopropylamine.

If partial or full extension chain anionic or potentially anionic profiling tools in accordance with the definition B2) are used, together with NH2- or NH-groups, the lengthening of the chain of the prepolymer, it is preferable to carry out before dispersing.

Amine components B1) and B2), if necessary, diluted with water or solvent, in the method according to the invention can be used individually or in mixture with any sequence they were added.

If dilution is water or an organic solvent, the diluent used in) components for chain elongation is preferably 70-95 wt.%.

The dispersion is performed preferably by the end of the extension chain. To do this, or dissolved polyurethane polymer with a long chain is introduced, when necessary, integration of the intensive mixing in the water dispersion or conversely, the dispersing water is added to a solution of a polyurethane polymer with a long chain. It is preferable to add water in the dissolved polyurethane polymer with a long chain.

Contained in the dispersion solvent after the process dispersion is removed in the usual way by distillation. It is also possible its removal during the process dispersion.

The content of the remainder of the organic solvent in the polyurethane dispersions (I) is typically less than 1.0 wt.% relative to the entire dispersion.

the pH of the polyurethane dispersions (I) according to the invention has a value of typically less than 9.0, preferably less than 8.5, more preferably less than 8.0, and particularly preferably from 6.0 to 7.5.

The solids content in the polyurethane dispersions (I) is 40 to 70, preferably 50 to 65, particularly preferably 55-65 wt.%.

Polyurethane dispersions (I) may contain functional hydroxyl or amino group or not to include them. In addition, dispersions (I) in a preferred form of execution may also have reactive groups in the form of blocked isocyanate groups, as described in the patent DE-A 19856412.

As coagulants (II) in the compositions can be applied all at least 2 cationic group-containing organic compounds, preferably all known the s from the prior art cationic chapeaurouge and precipitating means, such as cationic homopolymers or copolymers of salts of poly[2-(N,N,N-trimethylamino)acrylate], polyethylenimine, poly[N-(dimethylaminomethyl)acrylamide], substituted acrylamides, substituted methacrylamides, N-vinylformamide, N-vinylacetate, N-vinylimidazole, 2-vinylpyridine) - derivatives or 4-vinylpyridine) - derivatives.

Preferred coagulants (II) are cationic copolymers of acrylamide having structural units of the General formula (2), particularly preferred cationic copolymers of acrylamide having structural units of formula (1) and General formula (2)

where

R is C=O, -COO - (CH2)2- or-COO - (CH2)3and

X-means halide ion, preferably chloride.

As a cationic coagulant (II) is particularly preferably the use of such polymers with srednegalechny molecular weight of between 500,000 and of 50,000,000 g/mol.

Such coagulants (II) are implemented, for example, under the trademark Praestol® (Degussa Stockhausen, Krefeld, Germany) as a coagulating agent for wastewater treatment. Preferred coagulants type Praestol® are Praestol® K111L, K122L, K133L, SU 270L, K144L, K166L, SU 55L, 185K, 187K, 190K, K222L, K232L, K233L, K234L, K255L, K332L, K333L, K334L, E125, E150, and mixtures thereof. Especially preferred coagulating means are Praestol® 185K, 187K and 190K, and mixtures thereof.

The content of OST the Cove monomers, in particular acrylamide, is when the above-described coagulation mostly less than 1 wt.%, especially preferably less than 0.5 wt.% and most preferably less than 0.025 wt.%.

Coagulants can be used both in solid form and in the form of aqueous solutions or dispersions. Preferably the use of aqueous dispersions or solutions.

As foam stabilizers (III) apply a known standard compounds as, for example, water-soluble amides of the fatty acid series, sulfosuccinimidyl, petroleum sulfonates or Mesopotamia compounds (salts of fatty acids), in which the lipophilic residue contains, for example, 12-24 carbon atoms; in particular alkanesulfonyl with 12-22 carbon atoms in the hydrocarbon residue, alkylbenzenesulfonate with 14-24 carbon atoms in the hydrocarbon residue, or amides of fatty acids or Mesopotamia salts of fatty acids with 12 to 24 carbon atoms. Water-soluble inorganic salts of fatty acids are mainly amides of fatty acids mono - or di-(C2-3-alkanol)-amines. Mesopotamie salts of fatty acids can be, for example, alkali metal salts, aminosol or unsubstituted ammonium salts. As fatty acids are presented in the General case can be considered known compounds, for example lauric acid, myristic acid, palmitic acid, oleic Ki the lot, stearic acid, ricinoleic acid, Bekenova acid or arachidonic acid, or another technical fatty acid, such as acid-based coconut oil, skin oil, soybean oil, or technical oleic acid, and hydrogenation products of these acids.

Foam stabilizers (III) suitable those who do not decompose nor under the conditions of foaming or under conditions of use.

Preferably use a mixture of sulfosuccinimidyl and ammonium stearates. The mixture of sulfosuccinimidyl and ammonium stearates contains preferably 30-50 wt.% the ammonium stearates and 80-40 wt.% sulfosuccinimidyl, particularly preferably 70-50 wt.% sulfosuccinate, and the weight percentages are relative to the non-volatile components of both classes of foam stabilizers and sum up to 100 wt.%.

Means for coating according to the invention also contains a crosslinking agent (IV). Depending on the choice of the crosslinking agent (IV) and aqueous dispersion of polyurethane (I) can be obtained as one-component systems and two-component. Under the one-component coating systems in the sense of the present invention should be understood that such funds for coating, in which the film-forming components (I) and crosslinking component (IV) can be stored together without, not to the origin Taiwan is Dila crosslinking reaction in a noticeable or harmful for later use. Under a two-component coating systems in the sense of the present invention realize a composition for coating, in which the film-forming components (I) and crosslinking component (IV) because of their high reactivity should be stored in separate tanks. Both components are mixed immediately before use and, as a rule, react without additional activation. Suitable cross-linking agents (IV) are, for example, blocked and non-blocked polyisocyanate cross-linking means, amide - and aminoformaldehyde resins, phenolic resins, aldehyde and ketone resins, such as, for example, phenol-formaldehyde resins, resole, furan resin, urea resin, ethylcarbamate resins, triazine resins, melamine resins, benzoguanamine resin, cyanamide resins or aniline resins. Preferred are melamine-formaldehyde resins, and melamine can be used in an amount up to 20 mol.% thanks equivalent to the amount of urea. Especially preferred metilirovannye melanin, such as bi-, tri - and/or tetramethylsilane.

Melamine-formaldehyde resins are usually used in the form of their concentrated aqueous solutions, in which the solids content is 30-70 wt.%, preferably 35-65 wt.% and particularly preferably 40-60 wt.%.

In the operation of thickeners (V) may apply such standard thickeners, as derivatives of dextrin, starch or cellulose, for example, a simple ester of cellulose or hydroxyethylcellulose, organic synthetic thickeners based on polyacrylic acids, polyvinylpyrrolidones, poly(meth)acrylic compounds or polyurethanes (associative thickeners), and also inorganic thickeners, as betonite or silicic acid.

Compositions according to the invention contain relatively dry matter usually 80-99,5 parts by weight of dispersion (I), 0.5 to 5 parts by weight of a cationic coagulant (II), 0.1 to 10 parts by weight of the blowing means (III)0-10 parts by weight of a crosslinking agent (IV) and 0-10 wt.% thickener (V).

Preferably the compositions according to the invention contain relatively dry matter 85-97 parts by weight of dispersion (I), 0.75 to 4 weight parts of cationic coagulant (II), 0.5 to 6 parts by weight of the blowing means (III), 0.5 to 5 weight parts of a crosslinking agent (IV) and 0-5 wt.% thickener (V).

Particularly preferred compositions according to the invention contain relatively dry matter 89-97 parts by weight of dispersion (I), 0.75 to 3 weight parts of cationic coagulant (II), 0.5 to 5 parts by weight of the blowing means (III), 0.75 to 4 weight parts of a crosslinking agent (IV) and 0 to 4 weight parts of a thickener (V).

In addition to components (I)to(V) in the compositions according to the invention can also be applied to each the e water binders. These aqueous binders may be constructed, for example, of polymers of polyester, polyacrylate, polyepoxide polyurethane or other polymers. It is also possible in combination with the curing under the action of radiation substances, described in the patent EP-A-0753531. In addition, there may be used anionic and nonionic dispersion as the dispersion of polyvinyl acetate, polyethylene, polystyrene, polybutadiene, polyvinyl chloride, polyacrylate and copolymers.

Foaming in the method according to the invention is carried out by mechanical mixing of the composition with high speed, i.e. supply much effort or by reducing the pressure of gas blowing agent, for example, by blowing through with compressed air.

Mechanical foaming may be performed by any device for stirring, mixing or dispersion. Typically, this process involves the air, but it is possible to use nitrogen or other gases.

Means for coating according to the invention is made of components (I)to(V) by homogeneous mixing of all components in any sequence known from the prior art methods. Components (II) can also be added during or after the foaming process.

The composition of the coatings according to the invention can also contain more antioxidants and/or funds, pre is protecting from destruction under the action of light, and/or other AIDS and additives, such as emulsifiers, antispyware, thickeners. Finally, may also contain fillers, plasticizers, pigments, silicon sols, dispersions of aluminum and clay, tools, contributing to the spreading, or thixotropic means. Depending on the desired properties, and application means for coating according to the invention based on polyurethane dispersions may contain in the final product up to 70 wt.% such solids relative to the total weight of dry matter.

Next, the composition for coating according to the invention can be modified polyacrylates. For this purpose, in the presence of the polyurethane dispersion is carried out emulsion polymerization of olefinic unsaturated monomers, such as esters of (meta)acrylic acid and alcohols with 1-18 carbon atoms, styrene, vinyl esters or butadiene, as described in the patents DE-A-1953348, EP-A-0167188, EP-A-0189945 and EP-A-0308115. The monomers contain one or more olefinic double bonds. In addition, the monomers may contain such functional groups as hydroxyl group, epoxypropyl, group methylol or acetoacetate.

The next subject of the present invention is the use of means for coating according to the invention made for the I microporous coatings on various materials of the base.

As the Foundation materials are suitable, primarily textiles flat shape, flat substrate of metal, glass, ceramics, concrete, natural stone, leather, natural fibers, synthetic fibers, such as PVC, polyolefins, polyurethane, etc.

Under the textile flat shape in the sense of the present invention should be understood, for example, woven fabric, knitted goods, woven and seperately non-woven material. Textiles flat shapes can be made from synthetic and natural fibers and/or mixtures thereof. In principle, the method according to the invention is suitable textile products from any of the fibers.

Means for coating according to the invention are stable and, depending on the composition of the demand for processing, as a rule, a maximum of 24 hours.

Means for coating according to the invention due to their exceptional ductility at high tensile strength after the formation of the film is particularly suitable for the manufacture of microporous coatings on flexible painted surfaces.

Fabrication of microporous coatings begins with the first foaming means for coatings according to the invention containing components (I)to(V).

Foaming in the method according to the invention, the implementation of which is the mechanical mixing of the composition with high speed, i.e. supply much effort or by reducing the pressure of gasparinisaura, for example, by blowing through with compressed air.

Mechanical foaming can be any mechanical device for mixing, blending and dispersion. Typically, this process involves the air, but it is possible to use nitrogen or other gases.

Thus obtained foam during the foaming or directly after foaming is applied to the surface or placed in the form and dried.

In principle, it is also possible multilayer coating with the intermediate stages of drying.

For faster drying and fixing the foam preferably requires temperatures above 30°C. However, when the drying temperature should not exceed 200°C, preferably should be not more than 160°C. is Rational to perform the drying process in two or more stages with a corresponding increase in the temperature, to prevent welding of the coating.

Drying is typically carried out using a known heating and drying apparatus, such as (circulation) drying ovens, hot air or infrared radiation. It is also possible to drying by holding the coated substrate on a heated surface, for example rolls.

Application and drying can be carried out in continuous, so is in a discontinuous process, however, the preferred continuous method.

Polyurethane foam before drying usually have a density of from 50 to 800 g/liter, preferably 200-700 g/liter, particularly preferably 300-600 g/liter (mass of all the substances [g] relative to the volume of foam in one litre).

Polyurethane foam after drying and coagulation have a microporous structure with at least partially open pores and interconnected cells. The density of the dried foam is typically 0.3-0.7 g/cm3, preferably 0.3 to 0.6 g/cm3and particularly preferably 0.3 to 0.5 g/cm3.

Polyurethane foams have good mechanical strength and high elasticity. Typically, the magnitude of the maximum tensile strength over 0.2 H/mm2and the maximum elongation is more than 250%. Preferred maximum tensile strength greater than 0.4 H/mm2and stretching over 350% (definition according to DIN 53504).

Polyurethane foam after drying has a thickness of usually from 0.1 to 50 mm, preferably 0.5 to 20 mm, particularly preferably 1-10 mm, and most preferably 1-5 mm

Polyurethane foam can also be bonded to other materials, they can be laminated or covered with other layers, for example, based hydrogels, semi-permeable or sealed films, coatings or other pins.

2may be subject to pressure in a closed system squeegee or indicator templates. The raw weight of the applied substance corresponds mainly to the weight of the textile substrate. The rate of destruction of foam on the basis depends on the type and amount of foam stabilizer (III)coagulant (II) and ionization aqueous dispersion of polyurethane (I).

Attaching the formed honeycomb structure with open pores is carried out by drying at a temperature of from 35 to 100°C, mostly in the range from 60°C to 100°C, particularly preferably at 70 to 100°C. the Drying can be carried out in a conventional dryer. It is also possible to drying in the microwave drying device.

Then the foam matrix, if necessary, again fixed in the next stage of drying. This optional additional step of fixing is performed mainly at 100-175°C., particularly preferably at 100 to 150°C. and most preferably at 100-139°C, and the drying duration is chosen such that the warranty is strong enough to crosslinking polyurethane foam matrix.

Alternate drying and fixing may be performed by one process after coagulation by direct heat mainly to the temperature range of 100-175°C., preferably 100-150°C., and more preferably up to 100-139°C, and the contact time in the process is selected so as to ensure sufficient drying and sufficient fixing polyurethane foam matrix.

Dried textile base may be subjected to surface treatment prior to thickening, during, and after, e.g., by grinding, giving properties velour, Napping and/or softening.

Means for coating according to the invention can be applied to the base material in multiple layers, for example, to obtain a particularly high foam pads.

In addition, the microporous coating according to the invention are also applicable to multilayer structures.

The object of the present invention are also substrates coated with microporous coatings according to the invention. Thanks to the excellent technical characteristics of the compositions according to the invention or derived from these layers fit in the first place, to cover or manufacture of clothing, articles made of artificial leather, footwear, furniture upholstery, products for automobile interiors and dispute the active inventory, this list should be understood as merely exemplary, but not limiting in scope.

Examples:

Unless otherwise specified, the percentages refer to weight.

Determination of the solid content of the fractions was carried out in accordance with DIN EN ISO 3251.

The NCO content was determined by volumetric analysis according to DIN-EN ISO 11909, unless otherwise specified.

The substance used and abbreviations:

Diaminoethane:NH2-CH2CH2-NH-CH2CH2-SO3Na (45%solution in water)
Desmophen® C2200:polycarbonatediol, OH number 56 mg KOH/g, srednesemennyh molecular weight 2000 g/mol (JSC BayerMaterialScience AG, Leverkusen, Germany)
PolyTHF® 2000:polytetramethylene, HE is number 56 mg KOH/g, srednesemennyh molecular weight 2000 g/mol (SA BASF AG, Ludwigshafen, Germany)
PolyTHF® 1000:polytetramethylene, HE is number 112 mg KOH/g, srednesemennyh molecular weight 1000 g/mol (SA BASF AG, Ludwigshafen, Germany)
The polyether LB 25:monofunctional simple polyester-based oxide ethyl is on / propylene oxide, srednesemennyh molecular weight 2250 g/mol, OH number 25 mg KOH/g (AO BayerMaterialScience AG, Leverkusen, Germany)
Stokal® STA:Adjuvant foam-based stearate ammonium, the active component: 30% (OOO Bozzetto GmbH, Krefeld, Germany)
Stokal® SR:Adjuvant foam based succinamide, the content of active ingredient: about 34% (OOO Bozzetto GmbH, Krefeld, Germany)
Praestol® K:Cationic auxiliary means for coagulation, containing the structure And the content of the solid fraction of 25% (JSC Degussa AG, Germany)
Auders redthe drug azo-pigment, contains C.I.Pigment red 170 (SA Lanxess AG, Leverkusen, Germany)

Determination of average particle sizes (given as srednekislye value) polyurethane dispersion (I) was performed by means of laser correlation spectroscopy (instrument: Malvern Zetasizer 1000, Malver Inst. Limited).

Example 1: Polyurethane dispersion (component I)

144,5 g of Desmophen® C2200, of 188.3 g of PolyTHF® 2000, from 71.3 g of PolyTHF® 1000 and 13.5 g of polyether LB 25 was heated to 70°C. and Then at 70°C for 5 minutes was added a mixture of 45.2 g of hexamethylenediisocyanate and 59,8 g isophorondiisocyanate were mixed in a reverse thread so long, has not yet been achieved theoretical NCO value. The finished prepolymer was dissolved in 1040 g of acetone at 50°C and then for 10 minutes was added a solution of 1.8 g of hydrazine hydrate is added, 9,18 g diaminoethane and 41.9 g of water. Further mixing was 10 minutes. After adding a solution of 21.3 g of ISOPHORONEDIAMINE and 106,8 g of water and the mixture was turned into a dispersion for 10 minutes by adding 254 g of water. The removal of solvent was carried out by distillation in vacuum.

The obtained dispersion white had the following characteristics:

the content of the solid fraction:60%
particle size (LKS):285 nm

Example 2: Polyurethane dispersion (component I)

2159,6 g of a bifunctional polyol complex polyester based on adipic acid, neopentyl glycol and hexanediol (average molecular weight 1700 g/mol, OHZ=66), with 72.9 g of monofunctional complex of a polyether based on ethylene oxide/propylene oxide (70/30) (average molecular weight 2250 g/mol, OH number 25 mg KOH/g) was heated to 65°C. and Then at 65°C for 5 minutes was added a mixture of 241,8 g hexamethylenediisocyanate and 320,1 g isophorondiisocyanate and stirred at 100°C for so long, has not yet been achieved Theo is eticheskoe NCO-value 4,79%. The finished prepolymer was dissolved in 4990 g of acetone at 50°C and then for 2 minutes in a mixed solution of 187.1 g of ISOPHORONEDIAMINE and RUR 322.7 g of acetone. Subsequent stirring was 5 minutes. Then within 5 minutes was added a solution of 63.6 g diaminoethane, 6.5 hydrazinehydrate and 331,7 g of water. Dispersion was carried out by adding 1640,4 g of water. The removal of solvent was carried out by distillation in vacuum.

The obtained dispersion white had the following characteristics:

the content of the solid fraction:58,9%
particle size (LKS):248 nm

Example 3: Polyurethane dispersion (component I)

2210,0 g of a bifunctional polyol complex polyester based on adipic acid, neopentyl glycol and hexanediol (average molecular weight 1700 g/mol, OHZ=66) was heated to 65°C. and Then at 65°C for 5 minutes was added a mixture of 195,5 g hexamethylenediisocyanate and 258,3 g isophorondiisocyanate and stirred at 100°C for so long, has not yet been achieved theoretical NCO value 3,24%. The finished prepolymer was dissolved in 4800 g of acetone at 50°C and then for 5 minutes was mixed with the solution and 29.7 g of Ethylenediamine, 95,7 g diaminoethane and 602 g of water. Time which I further mixing was 15 minutes. Then the dispersion was carried out for 20 minutes by adding 1169 g of water. The removal of solvent was carried out by distillation in vacuum.

The obtained dispersion white had the following characteristics:

the content of the solid fraction:60%
particle size (LKS):278 nm

Example 4: Polyurethane dispersion (component I)

987,0 g of PolyTHF® 2000, 375,4 g of PolyTHF® 1000, 761,3 g of Desmophen® C2200 and 44.3 g of polyether LB 25 was heated in a standard mixer to 70°C. and Then at 70°C for 5 minutes was added a mixture of 237,0 g hexamethylenediisocyanate and 313,2 g isophorondiisocyanate and stirred at 120°C until it reached theoretical NCO value or more rapreviews it. The finished prepolymer was dissolved in 4830 g of acetone and cooled to 50°C., then for 10 minutes was added a solution of 25.1 g of Ethylenediamine, 116,5 g ISOPHORONEDIAMINE, of 61.7 g diaminoethane and 1030 g of water. Further mixing was 10 minutes. The mixture is then turned into a dispersion by adding 1250 g of water. The removal of solvent was carried out by distillation in vacuum.

The obtained dispersion white had the following characteristics:

the content of the solid fraction:61%
particle size (LKS):312 nm

Example 5: a Polyurethane dispersion (component I)

34,18 g of PolyTHF® 2000, of 85.1 g of PolyTHF® 1000, to 172.6 g of Desmophen® C2200 and 10.0 g of polyether LB 25 was heated in a standard mixer to 70°C. and Then at 70°C for 5 minutes was added a mixture of 53.7 g of hexamethylenediisocyanate and 71.0 g of isophoronediisocyanate and stirred at 120°C until it reached theoretical NCO value or more rapreviews it. The finished prepolymer was dissolved in 1005 g of acetone and cooled to 50°C., then for 10 minutes was added a solution of 5,70 g Ethylenediamine of 26.4 g of ISOPHORONEDIAMINE, 9,18 g diaminoethane and 249,2 g of water. Further mixing was 10 minutes. The mixture is then turned into a dispersion by adding 216 g of water. The removal of solvent was carried out by distillation in vacuum.

The obtained dispersion white had the following characteristics:

the content of the solid fraction:63%
particle size (LKS):495 nm

Example 6: Polyurethane dispersion (component I)

987,0 g of PolyTHF® 2000, 375,4 g PolyTHF® 100, 761,3 g of Desmophen® C2200 and 44.3 g of polyether LB 25 was heated in a standard mixer to 70°C. and Then at 70°C for 5 minutes was added a mixture of 237,0 g hexamethylenediisocyanate and 313,2 g isophorondiisocyanate and stirred at 120°C until it reached theoretical NCO value or more rapreviews it. The finished prepolymer was dissolved in 4830 g of acetone and cooled to 50°C., then for 10 minutes was added a solution of 36,9 g of 1,4-diaminobutane, 116,5 g ISOPHORONEDIAMINE, of 61.7 g diaminoethane and 1076 g of water. Further mixing was 10 minutes. The mixture is then turned into a dispersion by adding 1210 g of water. The removal of solvent was carried out by distillation in vacuum.

The obtained dispersion white had the following characteristics:

the content of the solid fraction:59%
particle size (LKS):350 nm

Example 7: Polyurethane dispersion (component I)

201,3 g of PolyTHF® 2000, 76,6 r PolyTHF® 1000, was 155.3 g of Desmophen® C2200, 2.50 g of 1,4-butanediol and 10.0 g of polyether LB 25 was heated in a standard mixer to 70°C. and Then at 70°C for 5 minutes was added a mixture of 53.7 g of hexamethylenediisocyanate and 71.0 g of isophoronediisocyanate and stirred at 120°C until it was postign theoretical NCO value or more rapreviews it. The finished prepolymer was dissolved in 1010 g of acetone and cooled to 50°C., then for 10 minutes was added a solution of 5,70 g Ethylenediamine of 26.4 g of ISOPHORONEDIAMINE, 14.0 g diaminoethane and 250 g of water. Further mixing was 10 minutes. The mixture is then turned into a dispersion by adding 243 g of water. The removal of solvent was carried out by distillation in vacuum.

The obtained dispersion white had the following characteristics:

the content of the solid fraction:62%
particle size (LKS):566 nm

Example 8: Polyurethane dispersion (component I)

201,3 g of PolyTHF® 2000, to 76.6 g of PolyTHF® 1000, was 155.3 g of Desmophen® C2200, 2.50 g of trimethylolpropane and 10.0 g of polyether LB 25 was heated in a standard mixer to 70°C. and Then at 70°C for 5 minutes was added a mixture of 53.7 g of hexamethylenediisocyanate and 71.0 g of isophoronediisocyanate and stirred at 120°C until it reached theoretical NCO value or more rapreviews it. The finished prepolymer was dissolved in 1010 g of acetone and cooled to 50°C., then for 10 minutes was added a solution of 5,70 g Ethylenediamine of 26.4 g of ISOPHORONEDIAMINE, 14.0 g diaminoethane and 250 g of water. Further mixing is left for 10 minutes. The mixture is then turned into a dispersion by adding 293 g of water. The removal of solvent was carried out by distillation in vacuum.

The obtained dispersion white had the following characteristics:

the content of the solid fraction:56%
particle size (LKS):440 nm

Example 9: a Polyurethane dispersion (component I)

1072 g of PolyTHF® 2000, 407,6 g of PolyTHF® 1000, 827 g of Desmophen® C2200 and 48.1 g of polyether LB 25 was heated in a standard mixer to 70°C. and Then at 70°C for 5 minutes was added a mixture of 257,4 g hexamethylenediisocyanate and 340 g of isophoronediisocyanate and stirred at 120°C until it reached theoretical NCO value or more rapreviews it. The finished prepolymer was dissolved in 4820 g of acetone and cooled to 50°C., then for 10 minutes was added a solution of 27.3 g Ethylenediamine, 126,5 g ISOPHORONEDIAMINE, 67,0 g diaminoethane and 1090 g of water. Further mixing was 10 minutes. The mixture is then turned into a dispersion by adding 1180 g of water. The removal of solvent was carried out by distillation in vacuum.

The obtained dispersion white had the following characteristics:

the content of the solid fraction:60%
particle size (LKS):312 nm

Manufacturer frothy pastes and microporous coatings of polyurethane dispersions of examples 1-9.

The obtained foamy paste is usually applied as an adhesive layer or intermediate layer of a coating of one-component systems brands Impraperm and Impranil.

For making frothy paste made of polyurethane dispersions of examples 1-9 can be the following devices:

for example, the stirrer company Hansa

stirrer company Mondo

mixer firms Oakes

generator company Stork.

The foam is applied valikamam squeegee. When applied wet foam gap squeegee should be from 0.3 mm to 0.5 mm, the density of the foam should be 300-600 g/l

When adjusting tool for laminating the distance of both rollers correspond to the total thickness of the layer of foam and paper.

As the basis for applying a foam coating suitable woven and knitted fabrics made of cotton and non-woven material of cellulose fibers and mixtures thereof. The base can be both teasing and lint-free cloth. The coating is mainly applied to the side of the lint-free cloth. For the manufacture of garments suitable base with a density of 140-200 g/m2upper material training and up to 240 g/m 2.

For coloring paste from the polyurethane dispersions of examples 1-9, the following are colored pasta:

for example, the brand Levanoxabout 10%
brand Levanylabout 6%
Isoversal WLabout 10%
brand Eudermabout 12-15%
brand Eukanolabout 10%

For pasta polyurethane dispersions of examples 1-9 with 1-25%ammonia solution was placed in a barrel of sufficient magnitude.

When the pH value was set equal to 7.5 to 8.5, in order to ensure the final stabilizing the foam salustiana.

Then when mixing one of the above devices were added 2.0 to 2.5% of the foam stabilizer Stokal SR and up to 1.0-1.5% ammonium stearate Stokal STA.

After the first of the homogenization process, if necessary, can be taken pigmentation.

After the successful distribution of the pigment was added about 1.0-1.5% of melamine resin cross-linking agent Acrafix ML.

Then you need to adjust liter mass at a speed of about 1500-2000 rpm

With further stirring, the floor is built of foam are coagulated by adding Praestol ®185K, after coagulation volume of foam remains unchanged, a slight increase in viscosity). Alternatively, Praestol®185K can be added before the step of foaming.

In some cases, in conclusion, the foam slightly thickened using a 2.5% polyacrylic acid Mirox AM, which ensured the stability of the resulting foam.

Drying or structuring foam was carried out in the drying channel with three zones (zone 1:80°C, zone 2:100°C., zone 3:160°C).

In all cases it was pure white foam with good mechanical properties and a thin microporous structure (foam No. 1-10).

Number
Foam No.Polyurethane dispersion (example)Stokal® STAStokal® SRAcrafix MLPraestol® 185kEuderm red
11000,0 (1)15202030
21000,0 (1)1520203050
31000,0 (2)15202010
41000,0 (3)15202010
5235,0 (4)4,25,65,65,0
6235,0 (5)4,25,65,65,0
7235,0 (6)4,25,65,65,0
8 235,0 (7)4,25,65,65,0
9235,0 (8)4,25,65,65,0
10235,0 (9)4,25,65,65,0
11 (for comparison)1000,0 (1)1520200,050

All foam 1-10 have a microporous structure. The refusal of coagulation (recipe foam 11) receive not microporous foam with closed cells.

1. Method of making microporous coatings, which foamed and dried composition comprising water, an anionic-gidratirovannuyu polyurethane dispersion (I) and a cationic coagulant (II), and cationic coagulant (II) is a polymer with srednegalechny molecular weight of from 500,000 to 50000000 g/mol, which has structural units of the General formulas (1) and(2)

where R is C=O, -COO(CH2)2- or-COO(CH2)3and
X-means halide ion.

2. The method according to claim 1, characterized in that the aqueous, anionic-gidratirovannuyu polyurethane dispersion (I) is produced by
A) obtain prepolymers with isocyanate functional groups of
A1) organic polyisocyanates
A2) polymeric polyols with an average molecular weight of from 400 to 8000 g/mol and HE is a functionality of from 1.5 to 6 and
A3) optionally, hydroponically compounds with a molecular weight of from 62 to 400 g/mol and
A4) optionally, isocyanatobenzene, anionic or potentially anionic and optionally nonionic gidrofilnami funds
In) free NCO groups are then completely or partially react with the lengthening of the chain
B1) with compounds having an amino group with a molecular weight of from 32 to 400 g/mol, and/or
B2) having an amino group, anionic or potentially anionic Hydrophilidae means,
and the prepolymers before, during or after stage C) is dispersed in water, and, optionally contained potentially ionic groups are converted into the ionic form by partial or complete interaction with neutralizing agent.

3. The method according to claim 2, characterized in that the at of the otoplenie water, anionic-gidratirovannykh polyurethane dispersions (I) A1) using 1,6-hexamethylenediisocyanate, isophoronediisocyanate, the isomeric bis-(4,4'-isocyanatophenyl)methanes and mixtures thereof, and A2) a mixture of polycarbonatediol and polytetramethylene, and the total content of polycarbonatediol and polytetramethylene component A2) is at least 70 wt.%.

4. The method according to claim 1 or 2, characterized in that in addition to the polyurethane dispersions (I) and a cationic coagulant (II) optionally used auxiliary substances and additives (III).

5. The method according to claim 4, characterized in that the auxiliary substances and additives (III) use water-soluble amides of fatty acids, sulfosuccinimidyl, the hydrocarbon sulfonates, sulfates hydrocarbons or salts of fatty acids as foaming agents and foam stabilizers.

6. The method according to claim 5, characterized in that as foaming agents and foam stabilizers used are mixtures of sulfosuccinimidyl and ammonium stearates, and 70-50 wt.% mixtures are sulfosuccinimidyl.

7. Microporous coating obtained by the method according to one of claims 1 to 6, having a microporous structure with open pores and the density in the dried condition of 0.3-0.7 g/cm3.

8. The composition for producing microporous coatings, soda is containing water, anionic-gidratirovannuyu polyurethane dispersion (I) and a cationic coagulant (II), a polymer with srednegalechny molecular weight of from 500,000 to 50000000 g/mol, which has structural units of the General formulas (1) and (2)

where R is C=O, -COO(CH2)2- or-COO(CH2)3and
X-means halide ion.

9. The substrate coated with the porous coating according to claim 7.

10. The substrate according to claim 9, selected from the group consisting of clothing, articles made of artificial leather, footwear, upholstery materials, furniture, products for interior decoration hire, sports equipment.



 

Same patents:

FIELD: chemistry.

SUBSTANCE: polyacrylic (co)polymer which is curable under the effect of atmospheric moisture and having elastometic properties is a plurality of acrylic prepolymer segments interlinked by urea or urethane links caused by moisture curing. Each of the plurality of prepolymer segments is a homopolymer or a copolymer of methylmethacrylate, C1-C16-alkylacrylate and C1-C16-alkylmethacrylate as the predominant monomer group. The moisture-curing method involves formation of a plurality of segments of an acrylic prepolymer, obtaining isocyanate-functionalised segments of the acrylic prepolymer, storing the isocyanate-functionalised segments in anhydrous state, followed by deposition thereof onto a substrate and moisture-curing to form a polyacrylic polymer.

EFFECT: obtaining polyacrylic (co)polymers cured under the effect of atmospheric moisture and having elastomeric properties, which retain resistance to UV rays, optical transparency, wear and physical properties of conventional thermoplastic acrylic polymers.

14 cl, 5 ex

FIELD: chemistry.

SUBSTANCE: invention relates to a method of producing dispersions of blocked polyurethane prepolymers, use of dispersions obtained using said method to produce coating agents, adhesive substances and sealants and elastomers, said application products themselves, as well as substrates provided with coating agents. The method involves the following: I) a blocked polyurethane prepolymer is obtained first by reacting a) 100 equivalent % of at least one polyisocyanate with b) 50-90 equivalent %, in terms of isocyanate reactive groups, of a thermally split blocking agent, c) 5-45 equivalent %, in terms of isocyanate reactive groups, monohydroxycarboxylic acid as a hydrophilic agent and d) 0-25 equivalent %, in terms of isocyanate reactive groups, of polyhydroxycarboxylic acid as a hydrophilic agent and e) 0-15 equivalent %, in terms of isocyanate reactive groups, of at least one, in terms of isocyanate reactive groups, di- or polyfunctional component of a chain extender with molecular weight from 32 to 350 g/mol, where i) this takes place using (partially) water-miscible organic solvents which are inert to NCO-groups and have boiling point lower than 120°C (at 1013 mbar), ii) and they are used in such an amount that the polyurethane prepolymer contained in the reaction solution after complete conversion ranges from 70 to 98 wt %. Further, II) the polyurethane prepolymer solution obtained at step (I) is dispersed in water, where before, during or after dispersion, deprotonation of carboxylic acid groups with a base takes place at least partially, and then III) if needed, the contained organic solvent is completely removed during dispersion via distillation.

EFFECT: obtaining polyurethane dispersions which are stable during storage, endow said products of their application with good optical properties, high resistance to chemical reagents and pendulum hardness.

13 cl, 10 ex, 1 tbl

FIELD: chemistry.

SUBSTANCE: invention relates to an actinic radiation cured coating composition containing a compound which contains at least two isocyanate groups, a compound which contains at least two hydroxyl groups, a sensitising agent and a photolatent catalyst for an isocyanate-hydroxl coupling reaction, where the photolatent catalyst is an organometallic compound, containing tin as a catalytically active metal, and where the atom of the catalytically active metal in the organometallic compound is not bonded to atoms of other metals. The invention also describes a method of coating a substrate, involving a step for applying said composition onto the substrate, as well as a set of parts for preparing said actinic radiation cured coating composition.

EFFECT: obtaining an actinic radiation cured coating composition having a good balance of long life and fast curing after application and irradiation, and leads to formation of cured coatings, the colour of which is not affected by coloured residues or photolatent catalyst fragments.

13 cl, 6 ex, 4 tbl

FIELD: textile industry.

SUBSTANCE: fabric is of polyester or polyetheretherketone type. The fabric coating is produced by way of cross-linking anionic aliphatic dispersion with OH-number < 0.5 with hydrophilous aliphatic polyisocyanate, preferably, based on hexamethylenediisocyanate with NCO value 17-18. The fabric may be woven of already coated fibres or filament yarns. The coating is applied on the fabric by way of its contacting with a gluing compound containing a gluing substance activated to perform cross-linking when heated. Then the fabric is ironed at a temperature of 95-100°C. The fabric is pitched on structures at a surface temperature, with the seams and laps not heated over 100°C. The invention excludes the necessity of further application of coating on the fabric after application the coating which ensures application of a significantly less weight in the process of coating.

EFFECT: one eliminates application of any organic solvents in the gluing compounds providing for tension of oil varnishes, liquifiers, fillers or coloured oil varnishes and offers an environmentally safe method for application of coating on an aircraft.

9 cl, 3 ex

FIELD: chemistry.

SUBSTANCE: radiation curable secondary coating composition contains an Alpha-oligomer which does not contain urethane, obtained via reaction of (a) an acrylate compound selected from alcohol-containing acrylate or alcohol-containing methacrylate compound, (b) an anhydride compound, (c) an epoxide-containing compound, (d) an optional chain extender compound, and (e) an optional catalyst, where said composition additionally contains a Beta-oligomer, where said Beta-oligomer is different from said Alpha-oligomer, where said Beta-oligomer is obtained via reaction of (β1) hydroxyethyl acrylate; (β2) one or more diisocyanates; (β3) polyester polyol or polyether polyol with number-average molecular weight ranging from 300 g/mol to 10000 g/mol; and (β4) a catalyst. The secondary coating composition can additionally contain a Gamma-oligomer which is epoxy diacrylate. The invention also relates to a method coating an optical fibre involving a) using a glass drawing column to obtain optical glass fibre; and b) applying a radiation-curable primary coating composition onto said optical glass fibre; c) optional exposure of said radiation-curable primary coating composition to radiation in order to cure said coating; d) applying a radiation-curable secondary coating composition onto said optical glass fibre; e) and exposing said radiation-curable secondary coating composition to radiation in order to said coating. The invention also relates to a coated wire and a coated optical fibre. The radiation-curable secondary coating on the wire and optical fibre has the following properties after initial curing and after one month of ageing at 85°C and 85% relative humidity: A) % RAU from 80% to 98%; B) in-situ modulus of elasticity between 0.60 GPa and 1.90 GPa; and C) Tc of the tube from 50°C to 80°C.

EFFECT: improved coating properties.

8 cl, 5 tbl

FIELD: chemistry.

SUBSTANCE: radiation-curable secondary coating composition contains A) a mixture of secondary coating oligomers which is mixed with B) a first diluent; C) a second diluent; D) an antioxidant; E) a first photoinitiator; F) a second photoinitiator; G) an optional slide-enhancing additive or a mixture of slide-enhancing additives; where said mixture of secondary coating oligomers contains α) Alpha-oligomer; β) Beta-oligomer; γ) Gamma-oligomer; where said Alpha-oligomer is synthesised via reaction of αl) anhydride with α2) acrylate containing a hydroxyl group; and the reaction product of α1) and α2) then reacts with α3) epoxide; in the presence of α4) a first catalyst; α5) a second catalyst; and α6) a polymerisation inhibitor; to obtain an Alpha-oligomer; where said Beta-oligomer is synthesised via reaction of β1) acrylate containing a hydroxyl group; β2) diisocyanate; and β3) polyether polyol; in the presence of β4) a catalyst; where said catalyst is selected from a group containing copper naphthenate, cobalt naphthenate, zinc naphthenate, triethylamine, triethylene diamine, 2-methyltriethylene diamine, dibutyl tin dilaurate, metal carboxylates, sulphonic acids, catalysts based on amines or organic bases, zirconium and titanium alkoxides, and ionic liquid salts of phosphonium, imidazolium and pyridinium, and said Gamma-oligomer is epoxy diacrylate. The method of applying the coating onto an optical fibre involves a) using a glass drawing column to obtain optical glass fibre; and b) applying a radiation-curable primary coating composition onto said optical glass fibre; c) optional exposure of said radiation-curable primary coating composition to radiation in order to cure said coating; d) applying a radiation-curable secondary coating composition onto said optical glass fibre; e) and exposing said radiation-curable secondary coating composition to radiation in order to said coating.

EFFECT: improved technological or operational characteristics of secondary coating, particularly improved curing and high rate of curing.

5 cl

FIELD: chemistry.

SUBSTANCE: polyvinyl butyral, surfactant, plasticiser and water are fed into a screw extruder. The components are mixed in the first zone of the extruder to form a welding mass. The welding mass is moved to the second zone of the extruder. Water is added to the welding mass in the second zone and mixed, and water is injected to a zone with high pressure, temperature and shear.

EFFECT: disclosed method enables fast and cheap production of an emulsion of plasticised polyvinyl butyral.

12 cl, 8 dwg, 7 tbl, 4 ex

FIELD: chemistry.

SUBSTANCE: invention relates to compositions for extreme media used in agriculture, cosmetology and everyday life. The compositions contain a surfactant based on an organosilicon compound of the formula: MM', where M=R1R2R3SiO1/2; M'=R4R5R6SiO1/2; where R1 is selected from a group consisting of a branched monovalent hydrocarbon radical containing 3-6 carbon atoms, and R7, where R7 has the formula: R8R9R10SiR12, R8, R9 and R10 are each independently selected from monovalent hydrocarbon radicals containing 1-6 carbon atoms and monovalent aryl or alkylaryl hydrocarbon radicals containing 6-13 carbon atoms, and R12 is a divalent hydrocarbon radical containing 1-3 carbon atoms, R2 and R3 are each independently selected from a group of monovalent hydrocarbon radicals containing 1-6 carbon atoms or R1, with R4 in form of alkyl polyalkylene oxide of general formula: R13(C2H4O)a(C3H6O)b(C4H8O)cR14, where R13 is a divalent straight or branched hydrocarbon radical, having the structure: -CH2-CH(R15)(R16)dO-, where R15 is H or methyl; R16 is a divalent alkyl radical with 1-6 carbon atoms, where the subscrip d is equal to 0 or 1; R14 is selected from a group consisting of H, monovalent hydrocarbon radicals with 1-6 carbon atoms and acetyl, where subscripts a, b and c are equal to zero or positive numbers and satisfy the following relationships: 2≤a+b+c ≤20 for a≥2, and R5 and R6 are each independently selected from a group of monovalent hydrocarbon radicals containing 1-6 carbon atoms or R4. The compositions have hydrolysis resistance in a wide pH range.

EFFECT: invention increases hydrolytic stability of the compositions.

65 cl, 21 tbl, 13 ex

FIELD: chemistry.

SUBSTANCE: invention relates to compositions for extreme media used in agriculture, cosmetology and everyday life. The surfactant compositions for extreme media contain organically modified hydrolysis-resistant disiloxane surfactants which are based on an organosilicon compound of formula: MM', where M = R1R2R3SiO1/2; M' = R4R5R6SiO1/2; where R1 is selected from a group consisting of a branched monovalent hydrocarbon radical containing 3-6 carbon atoms, and R7, where R7 has the formula: R8R9R10SiR12, R8, R9 and R10 are each independently selected from a group of monovalent hydrocarbon radical containing 1-6 carbon atom and monovalent aryl or alkylaryl hydrocarbon radical containing 6-13 carbon atoms, and R12 is a divalent hydrocarbon radical containing 1-3 carbon atoms, R2 and R3 are each independently selected from a group of monovalent hydrocarbon radicals containing 1-6 carbon atoms or R1, with R4 in form of alkylpolyalkylene oxide of general formula: R13(C2H4O)a(C3H6O)b (C4H8O)cR14, where R13 is a divalent straight or branched hydrocarbon radical, having the structure: -CH2-CH(R15)(R16)dO-, where R15 is H or methyl; R16 is a divalent alkyl radical consisting of 1-6 carbon atoms, where the subscript d can be equal to 0 or 1; R14 is selected from a group consisting of H, monovalent hydrocarbon radicals consisting of 1-6 carbon atoms and acetyl, where subscripts a, b and c are equal to zero or positive numbers and satisfy the following relationships: 2≤a+b+c≤20 for a ≥2, and R5 and R6 are each independently selected from a group of monovalent hydrocarbon radicals containing 1-6 carbon atoms or R4. The compositions are resistant to hydrolysis in a wide pH range.

EFFECT: invention increases hydrolytic stability of the compositions.

65 cl, 21 tbl, 13 ex

FIELD: chemistry.

SUBSTANCE: prepolymer composition for making sealants and coatings contains polyurethane prepolymers with blocked terminal NCO groups in which 50-100% terminal NCO groups are blocked silane groups and the remaining terminal NCO groups are blocked alcohol groups, where said composition contains unreacted aromatic alcohol in amount of not more than 0-15 mol % in terms of content of terminal NCO groups in the prepolymer, where the aromatic alcohol is selected from a group comprising phenol, 3-methoxyphenol, 4-methoxyphenol, nonylphenol, meta-cresol, para-cresol, 4-chlorophenol, meta-hydroxybenzaldehyde, ortho-hydroxybenzaldehyde, para-hydroxybenzaldehyde, hydroquinone, 3-hydroxyacetophenone and 4-hydroxyacetophenone. The invention also relates to a sealant containing said prepolymer composition and a catalyst for increasing the rate of cross-linking prepolymers as part of said prepolymer composition in a moist atmosphere.

EFFECT: high resistance to weather, high temperature and UV radiation.

15 cl, 4 ex

FIELD: chemistry.

SUBSTANCE: polyacrylic (co)polymer which is curable under the effect of atmospheric moisture and having elastometic properties is a plurality of acrylic prepolymer segments interlinked by urea or urethane links caused by moisture curing. Each of the plurality of prepolymer segments is a homopolymer or a copolymer of methylmethacrylate, C1-C16-alkylacrylate and C1-C16-alkylmethacrylate as the predominant monomer group. The moisture-curing method involves formation of a plurality of segments of an acrylic prepolymer, obtaining isocyanate-functionalised segments of the acrylic prepolymer, storing the isocyanate-functionalised segments in anhydrous state, followed by deposition thereof onto a substrate and moisture-curing to form a polyacrylic polymer.

EFFECT: obtaining polyacrylic (co)polymers cured under the effect of atmospheric moisture and having elastomeric properties, which retain resistance to UV rays, optical transparency, wear and physical properties of conventional thermoplastic acrylic polymers.

14 cl, 5 ex

FIELD: chemistry.

SUBSTANCE: coating composition contains polyurea obtained from a reaction mixture containing: a) a first component containing isocyanate; and b) a second component containing (meth)acrylated amine obtained through a reaction between a polyamine and mono(meth)acrylate, and at least one additional amine selected from: (a) a product of a reaction between (meth)acrylate, dialkylmaleate and/or dialkyl fumarate and an amine; (b) a diamine with the structure , where R3-R6 independently denote C1-C10 alkyl; (c) a diamine with the structure , where R7-R10 independently denote C1-C10 alkyl; (d) polyoxyalkylene diamine and/or polyoxyalkylene triamine, having primary amino groups or secondary amino groups which are not formed as a result of reaction between polyoxyalkylene diamine and/or polyoxyalkylene triamine and (meth)acrylate; (e) a diamine containing an aspartic ester functionality and does not contain any other functionality which might be reactive towards isocyanate; (f) a product of a reaction between triamine and diethylmaleate and/or dibutylmaleate; and/or (g) a product of a reaction between a polyamine and mono- or polyepoxide; where the ratio of isocyanate group equivalents to amine group equivalents is greater than 1, and isocyanate and (meth)acrylated amine, which is a reaction product, can be deposited onto a substrate in volume ratio of mixture components equal to 1:1. The invention also describes a method of coating a substrate, involving deposition onto at least part of the substrate of said coating composition, and a substrate at least partially coated by a coating made from said composition.

EFFECT: preparing coating from disclosed coating composition, which does not give aftertack from the substrate, has good hardness and endows the substrate with corrosion resistance, wear resistance, impact resistance, fire- or heat resistance, chemical resistance, structural integrity and decoration.

13 cl, 13 ex, 3 tbl

FIELD: chemistry.

SUBSTANCE: polyurea and polythiourea contained in the disclosed compositions are obtained from a reaction mixture containing: a first component which contains isocyanate and isocyanate-functional polythioether-polyurethane and/or polythiourethane; and a second component containing an amine; from a reaction mixture which contains: a first component containing isocyanate; a second component containing amine and amine/hydroxy-functional polythioether; and from a reaction mixture containing a first component which contains isocyanate and isocyanate-functional polythioether-polyurethane and/or polythiourethane; and a second component containing amine and amine/hydroxy-functional polythioether, respectively.

EFFECT: obtaining compositions whose coatings applied on a substrate have significant longevity, avoid tackiness of the layer and dampen explosion pressure or ballistic impact on the substrate.

37 cl, 15 ex, 3 tbl

FIELD: construction.

SUBSTANCE: anti-corrosion protective coating consists of the first element - a single-component moisture-hardened isocyanate primer, which contains at least 75 wt % of a nonvolatile residue and 6…8 wt % of isocyanate groups. The second element is a thick-layer external coating, to produce which a double-component polyurea-urethane mastic is used, containing an isocyanate prepolymer on the basis of diphenyl methane diisocyanate with mass portion of NCO-groups making 15…17% and dynamic viscosity at the temperature of (20±3)°C - 3…10 Pa·s, and the component it hardens with active atoms of hydrogen with hydroxyl number making 95…105 mgKOH/g, mass portion of total titrated nitrogen of 4.2…4.5%, containing a mixture of simple or complex polyester diol with molecular weight of 800…1000 c.u., sterically hindered diamine with amine number of 12…16.7%, oxypropylated ethylene diamine with hydroxyl number of 640…800 mgKOH/g and liposoluble organic pigments, at the ratio of isocyanate prepolymer to a component with active atoms of hydrogen, which ensures hardening of a thick-layer external coating until the required level of operational characteristics is produced.

EFFECT: coating ensures high level of adhesion, resistance to cathode lamination with preservation of the main physical-mechanical indices and ecological safety in process of insulation works.

3 tbl

FIELD: chemistry.

SUBSTANCE: invention relates to compositions based on silane-functional polymers, which are suitable for adhesive binding, sealing and coating porous substrates. The composition contains at least one silane-functional polymer, at least one organosilane and at least one organotitanate. The silane-functional polymer is a silane-functional polyurethane polymer or can be obtained through hydrosilylation of polymers, having terminal double bonds. The organosilane contains at least one sulphur atom. The organotitanate has ligands bound to a titanium atom through an oxygen-titanium bond. The ligands are selected from a group consisting of an alkoxy group, a sulphate group, a carboxylate group, a dialkylphosphate group and an acetylacetonate group. Content of the organotitanate in the composition is between 0.1 and 10 wt %. Content of the organosilane in the composition is between 0.1 and 7 wt %. The composition also contains at least one filler, content of which is between 10 and 70 wt %. The composition is used for binding, sealing and coating substrates made from concrete, mortar, brick, tiles, plaster, natural stone such as granite or marble, glass, glass-ceramic, metal or metal alloy, wood, plastic and lacquer.

EFFECT: obtained article, which is bound, sealed or coated using the composition, is a building structure, more specifically a building or civil construction structure; the composition guarantees efficient adhesion to a substrate even after storage in the presence of water.

17 cl, 1 tbl

FIELD: chemistry.

SUBSTANCE: present invention relates to poly(urea-urethane) and an article made from said compound, as well as laminated material and a coating composition containing said poly(urea-urethane). The poly(urea-urethane) contains a reaction product of components comprising: (a) at least one urea-urethane prepolymer with isocyanate functionality, containing a reaction product: (1) of at least one urea-urethane prepolymer with isocyanate functionality, containing a reaction product: (i) at least one polyisocyanate; and (ii) at least one aliphatic branched polyol, having 4-18 carbon atoms; where the equivalent ratio NCO:OH is between approximately 1.0:0.05 and approximately 1.0:0.7, and (2) water, where the equivalent ratio NCO: water is approximately between 1.0:0.05 and approximately 1.0:0.7, to form a urea-urethane prepolymer with isocyanate functionality; and (b) at least one aliphatic branched polyol, having 4-18 carbon atoms, or a diol having 2-18 carbon atoms, where the equivalent ratio of isocynate groups to hydroxyl groups is between approximately 1.05:0.1 and approximately 1:1.

EFFECT: synthesis of poly(urea-urethane), products of which are made through casting or reaction injection moulding and have good optical properties, high resistance to impact loads, high impact viscosity, high K-ratio, good ballistic stability, good resistance to solvents and good weather resistance.

19 cl, 110 ex, 33 tbl, 26 dwg

FIELD: chemistry.

SUBSTANCE: invention relates to a solution of virtually non-cross linked thermoplastic polyurethaneureas for applying coatings onto substrates, for example on woven fabric or leather. Said solution contains 15-60 wt % dissolved polyurethaneurea in mixtures of organic solvents containing 15-50 wt % γ-butyrolactone and other solvents such as low molecular weight alcohols, esters and ketones.

EFFECT: obtaining solutions which are highly stable during storage, manufacturing and application of which excludes toxic solvents, and coatings from which have good adhesion, hardness and tear strength.

4 cl, 24 ex

FIELD: chemistry.

SUBSTANCE: present invention relates to a (meth)acrylate/aspartate amine curing agent which contains the product of a reaction between (a) polyamine, (b) dialkylmaleate and/or dialkylfumarate and (c) (meth)acrylate and production method thereof. The invention also describes polyurea which contains the product of the reaction between said curing agents and isocyanate, coating compositions which contains such polyurea, and substrates coated with such compositions.

EFFECT: obtaining amine curing agents which are sufficiently reactive but which ensure appropriate application life and endow final compositions in which said curing agents are used with the required characteristics, resistance to damages caused by corrosion, wearing, impact, effect of chemical substances, UV radiation, heating and other surrounding medium factors.

31 cl, 22 ex, 3 tbl

FIELD: chemistry.

SUBSTANCE: aqueous coating composition contains aqueous dispersions of polyurethane urea, aqueous or water-base binder with hydroxyl functional groups, selected from a group comprising polyester resins, polyurethane resins, polyureaurethane resins, polyacrylate resins or combinations of said types of resins, polyisocyanates, possibly modified to endow them with hydrophilic properties, as well as foam-stabilisers.

EFFECT: obtaining coating with excellent soft touch which has resistance to scratching and dissolving without additional ground coating and finishing.

14 cl, 5 ex

FIELD: chemistry.

SUBSTANCE: polyurea coating composition is obtained from a reaction mixture which contains an isocyanate functional component and an amino functional component, where the ratio of equivalents of isocyanate groups to equivalents of amino groups is greater than 1, volume ratio in the mixture of the isocyanate functional component to the amino functional component is 1:1, in which at least one polyisocyanate monomer constitutes at least 1 wt % of the isocyanate functional component, where the isocyanate functional component contains the reaction product of polyisocyanate and at least two polyols, and the amino component contains an aspartate-based amino functional reactive resin. The multicomponent composite coating contains a first polyurea layer which is deposited from the first composition, and a second polyurea layer which is deposited from the second composition, in which at least one composition, chosen from the first composition and second composition, includes a polyurea coating composition.

EFFECT: obtaining compositions which improve adhesion to earlier deposited coatings or to a substrate, characterised by low viscosity, which improves fluidity of the coating composition for a long period of time.

24 cl, 3 dwg, 1 tbl, 1 ex

FIELD: chemistry.

SUBSTANCE: multicomponent aqueous composition contains an aqueous dispersion and a component containing a material having functional groups. The components are mixed with each other before applying the composition onto the substrate. The aqueous dispersion contains a polycarbonate-polyurethane polymer and an acrylic polyol. The aqueous dispersion also contains an organic solvent. The material having functional groups reacts with functional groups of the acrylic polyol and/or polycarbonate-polyurethane polymer. The acrylic polyol has number-average molecular weight from 500 to 4000. The polycarbonate-polyurethane polymer is obtained via a reaction between hydroxy-functional carbonate-containing material and polyisocyanate. The hydroxy-functional carbonate-containing material contains a product of reaction between carbonic acid or derivative thereof and a diol. The diol is hexane-1,6-diol.

EFFECT: composition has low content of volatile substances, as well as high water resistance and hardness.

20 cl, 3 ex, 2 tbl

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