Hydropyle blocked polyisocyanates

FIELD: chemistry.

SUBSTANCE: hydropyle blocked polyisocyanates are produced by the method wherein: A) one or the several organic polyisocyanates interact with B) one or several organic compounds, containing, at least, one isocyanate reactive group and comprising b1) non-ionic hydropyle groups based on simple poly-alkylenoxide-polyethers containing at least 30 wt % of ethylene-oxide links, and/or b2) ionic or potentially ionic hydropyle groups a forming dissociation equilibrium depending upon pH in interaction with water, and, depending upon pH not having a charge and being charged positively or negatively, or interact with C) one or several blocking means containing, at least, one cyclic ketone with CH-acidity of the general formula (2) where X is the electron-acceptor group, R1, R2 mean independently from each other the hydrogen atom, saturated or unsaturated aliphatic residual containing up to 12 carbon atoms, n is 1, and, if necessary, interacting with one or several (cyclic)aliphatic mono- or polyamines with the amount of amino groups in a molecule of 1 to 4 and molecular weight of up to 400 note that, if necessary, it interacts with one or several multinuclear spirits with the number of hydroxyl groups in a molecule from 1 to 4 and molecular weight of up to 400, and, if necessary, with amino spirits in the presence D) of one or several catalysts or, if necessary, with auxiliary substances and additives and, if necessary E), with solvents. Polyisocyanates can be used for manufacturing varnishes, coatings, sizes, glues and molded products.

EFFECT: improved method of producing hydropyle blocked polyisocyanates.

6 cl, 6 ex

 

The present invention relates to new gidrogenizirovanne blocked polyisocyanates, method of their production and their use.

The blocked polyisocyanates for the temporary protection of isocyanate groups is a long-established working method and, for example, described in Houben Weyl "Methods der organischen Chemie ", XIV/2, p.61-70. Thermosetting compositions containing blocked polyisocyanates, have found application, for example, polyurethane varnishes.

Reviews are certainly possible blocking means are, for example, Wicks and others in Progress in Organic Coatings 1975, 3, p.73-79, 1981, 9, p.3-28 and 1999, 36, p.148-172.

In aqueous coating materials are usually hydrophilisation blocked polyisocyanates, which are described, for example, in DE-A 2456469 and DE-A 2853937.

The disadvantage when using known hydrophilizing blocked polyisocyanates is that after release or curing formed in the lacquer film remains a certain percentage of the blocking means, which adversely affects the properties of the lacquer. Properties such as resistance to scratching and acid resistance of odnoupakovochnye lacquer films due to the remaining blocking means worse than the same properties of the so-called both supplied in two packages polyurethane coatings (for example, T.Engbert, E.König, E.Jürgens "Far-be & Lack" publishing Curt R. Vincentz, Hannover 10/1995). Cleavage of the blocking means and the volatilization of his varnish film in gaseous form can lead to bubbles in the varnish. When appropriate, of environmental and health considerations may be necessary afterburning released locking means.

Usually the temperature at which hot drying systems containing known hydrophilisation blocked polyisocyanates, are 150-170°C.

For odnoupakovochnye water systems for coatings with low temperature hot drying 90-120°find application in recent times mainly polyisocyanates, blocked diethyl ester of malonic acid (for example, EP-A 0947531). As opposed to blocking, for example, N-heterocyclic compounds such as caprolactam or dimethylpyrazol or, for example, butanonoxime blocking means while not fully cleaved, and is transesterification blocking the polyisocyanate diethyl ester of malonic acid with the removal of ethanol.

It was found that blocking hydrophilizing polyisocyanates with CH-acidic cyclic ketones leads to products that react without removal of the blocking means, i.e. without issue, and the curing temperature below 150°C. is stepping down from this such hydrophilisation blocked polyisocyanates can also be combined with other aqueous binders.

The subject invention are polyisocyanates which contain

i) non-ionic Hydrophilidae groups on the basis of simple polyalkyleneglycol containing at least 30 wt.% ethylenoxide links, and/or

ii) an ionic or potentially ionic Hydrophilidae groups that react with water to form depending on the pH equilibrium of dissociation, and depending on the pH without charge, charged positively or negatively, and

iii) at least one structural unit of formula (1)

where X is an electron-acceptor group,

R1, R2mean independently from each other hydrogen atom, a saturated or unsaturated aliphatic or cycloaliphatic, optionally substituted aromatic or analiticheskii balance and each contains up to 12 carbon atoms and

n means an integer from 0 to 5.

Another object of the invention is a method of producing polyisocyanates according to the invention, in which

A) one or more organic polyisocyanates interact with

B) one or more containing at least one reactive towards the isocyanate group of the organic compounds which

B1) are non-ionic Hydrophilidae groups on the basis of the simple polyalkyleneglycol, containing at least 30 wt.% ethylenoxide links, and/or

B2) have ionic or potentially ionic Hydrophilidae groups forming in the interaction with water depending on the pH equilibrium of dissociation, and depending on the pH without charge, charged positively or negatively,

B) one or more blocking means containing at least one with CH-acidic cyclic ketone of General formula (2)

where X is an electron-acceptor group,

R1, R2mean independently from each other hydrogen atom, a saturated or unsaturated aliphatic or cycloaliphatic, optionally substituted aromatic or analiticheskii balance and each contains up to 12 carbon atoms and

n means an integer from 0 to 5,

and

D) optionally one or more (cyclo)aliphatic mono - or polyamines with the number of amino groups in the molecule from 1 to 4 and a molecular weight of up to 400, and optionally one or more polyhydric alcohols with the number of hydroxyl groups in the molecule from 1 to 4 and a molecular weight of up to 400, if necessary, also with aminoalcohols in the presence of

D) one or more catalysts,

E) optionally auxiliary substances and DOB is OK and

G) optionally solvents.

To obtain the polyisocyanates according to the invention as component A) can be applied to all organic compounds containing the isocyanate group in the molecule, preferably aliphatic, cycloaliphatic, aromatic or heterocyclic polyisocyanates with an NCO-functionality ≥2, individually or in any mixtures with one another.

Compounds A) preferably have an average NCO-functionality of from 2.0 to 5.0, most preferably from 2.3 to 4.5, the content of isocyanate groups of from 5.0 to 27.0 wt.%, most preferably of 14.0 to 24.0 wt.% and a content of Monomeric diisocyanates preferably less than 1 wt.%, most preferably less than 0.5 wt.%.

Suitable diisocyanates for preparing compounds of component A) are obtained by vosganian or methods without the use of phosgene, for example by thermal decomposition of polyurethanes, aliphatic, cycloaliphatic, analiticheskie and/or aromatic di - or triisocyanate with a molecular weight lying in the range from 140 to 400, such as, for example, 1,4-diisocyanatobutane, 1,5-diisocyanatobutane, 1,6-diisocyanatohexane (HDI), 2-methyl-1,5-diisocyanatobutane, 1,5-diisocyanato-2,2-dimethylpentane, 2,2,4 - or 2,4,4-trimethyl-1,6-diisocyanatohexane, 1,10-diisocyanatohexane, 1,3- and 1,4-diisocyanato clohexane, 1,3 - and 1,4-bis-(isocyanatomethyl)cyclohexane, 1-isocyanato-3,3,5-trimethyl-5-isocyanatomethyl (isophorondiisocyanate, IPDI), 4,4'-diisocyanatohexane (Desmodur® W, Bayer AG, Leverkusen), 4-isocyanatomethyl-1,8-octadienal (triisocyanate, TIN), ω,ω'-diisocyanato-1,3-dimethylcyclohexane (H6XDI), 1-isocyanato-1-methyl-3-isocyanatobenzene, 1-isocyanato-1-methyl-4-isocyanatobenzene, bis-(isocyanatomethyl)norbornane, 1,5-naphthalenedisulfonate, 1,3 - and 1,4-bis-(2-isocyanatopropyl-2-yl)benzene (TMXDI), 2,4 - and 2,6-diisocyanates (TDI), in particular 2,4 - and 2,6-isomers and technical mixtures of both isomers, 2,4'- and 4,4'-diisocyanatobutane (MDI), 1,5-diisocyanatomethyl, 1,3 bis-(isocyanatomethyl)benzene (XDI), and any mixtures of these compounds.

Most suitable as compounds of component A) are polyisocyanates which are obtained by the interaction of the di - or triisocyanate with ourselves for isocyanate groups, such as uretdione or carbodiimide compounds or as isocyanurate or iminoimidazolidine, which are formed due to the reaction of the third isocyanate groups. The polyisocyanates may also contain Monomeric di - and/or triisocyanate and/or oligomeric polyisocyanates with structural elements biureta, allophanate and allodapini, not containing monomer or partially Modific the integration of the diisocyanate monomer, triisocyanate, as well as any mixtures of the aforementioned polyisocyanates. Suitable also prepolymers of polyisocyanates which contain on average more than one isocyanate group in the molecule. They are obtained through reaction of molar excess, for example, the above-mentioned polyisocyanates with organic substance having at least two active hydrogen atoms in the molecule, for example, in the form of hydroxyl groups.

Particularly preferred polyisocyanates of component A) are polyisocyanates, which have the structure of uretdione, isocyanurate, allodapini biureta, allophanate or iminoimidazolidine and/or oxidization (cf. also J.Prakt. Chem. 1994, 336, str-200) and are based on the above, in particular aliphatic and/or cycloaliphatic, diisocyanates.

Most preferably component (A) used only aliphatic and/or cycloaliphatic polyisocyanates and mixtures of the polyisocyanates mentioned type, in particular on the basis of hexamethylenediisocyanate (HDI), isophoronediisocyanate (IPDI) and/or 4,4'-diisocyanatohexane.

Suitable compounds of component B) are non-ionic Hydrophilidae connection (type B1) and/or ionic or potentially ionic Hydrophilidae connection (type B2)containing reactive towards isocyanate groups. They can use the taken one by one or in any mixtures with one another.

Nonionic hydrotribromide compounds B1) are, for example, monovalent simple polyalkyleneglycol with average 5-70, preferably 7-55, ethyleneoxide units in the molecule with the content ethyleneoxide units not less than 30 wt.%, which are obtained by a known method alkoxysilane suitable parent compounds (see for example Ullmanns Encyclopädie der technischen Chemie, 4th edition, t, Izd-vo Chemie, Weinheim (Weinheim), p.31-38).

Suitable parent compounds are, for example, saturated monosperma, such as methanol, ethanol, n-propanol, ISO-propanol, n-butanol, ISO-butanol, 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 tetrahydrofurfuryl alcohol; simple monoalkyl ethers of diethylene glycol such as, for example, monobutyl ether of diethylene glycol; unsaturated alcohols, such as allyl alcohol, 1,1-dimethylallyl alcohol or oleic alcohol, aromatic alcohols such as phenol, the isomeric Cresols or methoxyphenols, analiticheskie alcohols such as benzyl alcohol, anise alcohol or cinnamic alcohol; secondary monoamines such as dimethylamine, diethylamine, dipropylamine, d is Isopropylamine, dibutylamine, bis(2-ethylhexyl)amine, N-methyl - and N-ethylcyclohexylamine or dicyclohexylamine, and also heterocyclic secondary amines such as morpholine, pyrrolidine or 1H-pyrazole.

The preferred source connections are monosperma and simple monoalkyl ethers of diethylene glycol. Most preferred as the source connection monobutyl ether of diethylene glycol.

Suitable for reaction alkoxysilane acceleratedly are ethylene oxide and propylene oxide, which upon reaction alkoxysilane can be used in any sequence or in a mixture.

In the case of simple polyalkyleneglycol preferably refers to pure simple polyethylenepolyamine or mixed simple polyalkyleneglycols, acceleratedly links which are not less than 30 mol.%, preferably not less than 40 mol.%, from ethylenoxide links.

Especially preferred nonionic hydrotribromide compounds B1) are monofunctional mixed simple polyalkyleneglycols that contain at least 40 mol.% ethyleneoxide units and not more than 60 mol.% propylenoxide links.

Under ionic or potentially ionic hydrotribromide compounds B2) component B), we need to understand all compounds that contain at least one reactive towards isocyanate group and at least one functional group, such as, for example, -COOY, -SO3Y, -PO(OY)2(Y=N, NH4+, metal cation), -NR2, -NR3+(R=H, alkyl, aryl), which upon contact with an aqueous media to form if necessary, depending on the pH equilibrium dissociation and thus can be charged negatively or positively, or not to have a charge.

Preferably these compounds are carboxylic, sulfonic or phosphonic acid with one or two hydroxyl groups, carboxylic, sulfonic or phosphonic acid with one or two amino groups, which may be in the form of internal salts (bipolar ions, betaines, reaction) or in the form of metal salts or ammonium salts. Examples called ionic or potentially ionic hydrophilizing compounds are dimethylolpropionic acid, hydroxypivalic acid, N-(2-amino-ethyl)-β-alanine, 2-(2-aminoethylamino)econsultation, Ethylenediamine-propyl - or butyl-acid, 1,2 - or 1,3-Propylenediamine-β-ethylsulfonyl, lysine, 3,5-diaminobenzoic acid, Hydrophilidae tool according to example 1 of EP-A 0916647 and its alkali metal salts and/or ammonium salts; the product of the merger of biolife the sodium to butene-2-dilu-1,4, simple polyethersulfone, propoxycarbonyl product fitting 2-butandiol and NaHSO3(for example, in DE-A 2446440, p.5-9, formula I-III), as well as connections that are as a hydrophilic structure elements contain transformed into cationic groups, for example, amine-based structural components, such as the N-methyldiethanolamine. Further, as component B2) in the component B) can also be used CAPS (cyclohexanedicarboxylate), as, for example, in WO 01/88006.

The most preferred ionic or potentially ionic gidrofilizatsii compounds for use in component B2) are N-(2-amino-ethyl)-β-alanine, 2-(2-aminoethylamino)econsultation, dimethylolpropionic acid, Hydrophilidae tool according to example 1 of EP-A 0916647 and its metal salts and/or ammonium salt.

Component B) preferably is a combination of nonionic and ionic or potentially ionic hydrophilizing compounds mentioned type, especially a combination of nonionic and anionic hydrophilizing connections.

As a blocking means in the component C) used with CH-acidic cyclic ketones of General formula (2)

where X is an electron-acceptor group,

R1, R2means independently of the Rog from each other a hydrogen atom, saturated or unsaturated aliphatic or cycloaliphatic, optionally substituted aromatic or analiticheskii balance and each contains up to 12 carbon atoms and

n means an integer from 0 to 5.

In the case of electron-withdrawing group X we can talk about all the deputies, who, for example, by maternova or inductive effects lead to the appearance of the CH-acidity of the hydrogen atom, located in the α-position. This can be, for example, ester groups, sulfoxide group, sulfonic group, a nitro group, a phosphonate group, a nitrile group, isonitrile group or carbonyl group. Preferred are nitrile and ester groups, the most preferred is methyl group and ethyl ether carboxylic acid.

Suitable are also compounds of General formula (2), in the cycle which optionally include heteroatoms such as oxygen atoms, sulfur or nitrogen. Thus, it is preferable structure of the lactone.

Activated cyclic system of the formula (2) preferably represents a five-membered (n=1) or a six-membered rings (n=2) loop.

Preferred compounds of General formula (2) are methyl ether and ethyl ether, Cyclopentanone-2-carboxylic acid, nitrile Cyclopentanone-2-carboxylic acid, methyl is a new ether and ethyl ether, cyclohexanone-2-carboxylic acid or Cyclopentanone-2-carbonylmethyl. Especially preferred methyl ether and ethyl ether, Cyclopentanone-2-carboxylic acid and methyl ester and ethyl ester cyclohexanone-2-carboxylic acid.

Needless to say, in the component) called cyclic ketones with CH-acidity, can be used in mixtures with each other or in any mixtures with other locking means. Other suitable locking means are, for example, alcohols, lactams, oximes, malonic esters, allylacetate, triazoles, phenols, imidazoles, pyrazoles, and also amines, such as, for example, butanonoxime, Diisopropylamine, 1,2,4-triazole, dimethyl-1,2,4-triazole, imidazole, diethyl ester of malonic acid, ethylacetoacetate, acetonates, 3,5-dimethylpyrazole, ε-caprolactam, N-methyl, N-ethyl-, N-(ISO)propyl-, N-n-butyl-, N-ISO-butyl-, N-tert-butylbenzylamine or 1,1-dimethylbenzylamine, N-alkyl-N-1,1-dimethylethylamine, the addition products benzylamine to compounds with activated double bonds, Takima as esters of malonic acid, N,N-dimethylaminopropylamine and other, optionally substituted benzylamine containing tertiary amino groups, and/or dibenzylamine or any mixtures of these blocking means. In that case, if they are used together, the share of these other blocking means, different from possessing Skeletally cyclic ketones, in the component b) is up to 80 wt.%, preferably up to 60 wt.%, most preferably up to 20 wt.%, all of the component).

It is most preferable as the component B) is used exclusively ethyl ether, Cyclopentanone-2-carboxylic acid.

Isocyanate groups in the polyisocyanates according to the invention is not less than 50 wt.%, preferably not less than 60 wt.% and most preferably not less than 70 wt.%, are blocked by the compounds of component C).

As component D) can be applied to other compounds with one, two, three and four reactive towards isocyanate functional groups on one or in any mixtures with one another. This can be a substance with one, two, three and four amino groups or hydroxyl groups with a molecular weight of up to 400 g/mol, such as, for example, Ethylenediamine, 1,2 - and 1,3-diaminopropane, 1,3-, 1,4 - and 1,6-diaminohexane, 1,3-diamino-2,2-DIMETHYLPROPANE, 1-amino-3,3,5-trimethyl-5-aminoheterocycles (ACCESSORIES>), 4,4'-diaminodicyclohexylmethane, 2,4 - and 2,6-diamino-1-methylcyclohexane, 4,4'-diamino-3,3'-dimethylcyclohexylamine, 1,4-bis-(2-aminopropan-2-yl)cyclohexane, ethylene glycol, propylene glycol, 1,4-butanediol, 1,6-hexanediol, glycerin, trimethylacetyl, trimethylolpropane, isomer of hexanetriol, pentaerythritol or any CME and these compounds.

As compounds of component D) can be applied to all well-known specialist of the compounds used for the catalysis of the reaction block NCO-groups, one at a time or in any mixtures with one another. Preferred are base containing alkali and alkaline earth metals, such as, for example, powdered sodium carbonate (soda or trisodium phosphate, metal salts, especially the carbonates, the second side of the group, especially zinc, and also tertiary amines such as DABCO (1,4-diazabicyclo[2.2.2]octane).

Preferred as compounds of component D) used sodium carbonate, potassium carbonate or zinc salts, in particular 2-ethylhexanoate zinc.

As used optionally component (E) may contain auxiliary substances and additives, or mixtures thereof. Appropriate in the sense of (E) compounds are, for example, antioxidants, such as 2,6-di-tert-butyl-4-METHYLPHENOL, UV absorbers type 2-hydroxyphenylacetate or light stabilizers of the type of sterically obstructed amines or other standard stabilizers, such as described, for example, in the monographs "Lichtschutzmittel für Lacke" ("light stabilizers for paints") (A.Valet, in Vincentz, Hannover, 1966) and "Stabilization of Polymeric Materials" ("Stabilization of polymeric materials") (H.Zweifel, ed in Springer, Berlin, 1997, Appendix 3, str-213).

As the content of inorganic fillers solvents W) suitable conventional solvents for varnishes, such as, for example, ethyl acetate, butyl acetate, 1-methoxypropyl-2-acetate, 3-methoxy-n-butyl acetate, acetone, 2-butanone, 4-methyl-2-pentanone, cyclohexanone, toluene, xylene, chlorobenzene or white spirit. Also suitable mixture, which primarily contain polyamidine aromatic compounds, such as, for example, commercially available under the names Solvent Naphtha, Solvesso® (Exxon Chemicals, Houston, USA), Cypar® (Shell Chemicals, Eschborn, Germany), Cycio Sol® (Shell Chemicals, Eschborn, Germany), Tolu Sol® (Shell Chemicals, Eschborn, Germany), Shellsol® (Shell Chemicals, Eschborn, Germany). Other solvents are, for example, esters of carbonic acid, such as dimethylcarbonate, diethylcarbamyl, 1,2-ethylene carbonate resulting and 1,2-propylene carbonate, lactones, such as β-propiolactone, γ-butyrolactone, ε-caprolacton, ε-methylcaprolactam, propilenglikolstearat, dimethyl ether of diethylene glycol, dimethyl ether of dipropyleneglycol, diethylenglycol - and-butylaminoethyl, N-organic N-methylcaprolactam, or any mixture of these solvents. Preferred solvents are acetone, 2-butanone, 1-methoxypropyl-2-acetate, xylene, toluene, mixtures, which primarily contain polyamidine aromatic compounds, such as, for example, commercially available under the names Solvent Naphtha, Solvesso® (Exxon Chemicals, Houston, USA), Cypar® (Shell Chemicals, Asbo is h, Germany), Cyclo Sol® (Shell Chemicals, Eschborn, Germany), Tolu Sol® (Shell Chemicals, Eschborn, Germany), Shellsol® (Shell Chemicals, Eschborn, Germany)and N-organic. The most preferred acetone, 2-butanone and N-organic.

The method according to this invention preferably is carried out at temperatures from 15 to 140°S, most preferably from 40 to 90°C.

With the method according to the invention, components a), B), C) and optionally D) in any sequence interact in the presence of a catalyst D) optionally in the presence of components (E) and, if necessary, solvent W).

In a preferred embodiment of the invention, the component B) contains non-ionic (corresponding to B1)), and ionic or potentially ionic (corresponding to B2)) Hydrophilidae connection and getting the polyisocyanates according to the invention is carried out in such a way that A) is first mixed with compounds of the type B1), and optionally with components D), E) and F). Then the reaction mixture interacts with a blocking agent) in the presence of a catalyst D) and subsequently with compounds of the type B2).

In another preferred embodiment of the invention, the component B) contains compounds and B1)and B2), the latter as reactive groups to the isocyanate groups has at least one hydroxyl group and does not contain amino groups. Getting polyisocyanates according to the invention is then carried out in such a way that A) is mixed with hydrotribromide compounds B1) and B2), and optionally with components D), E) and F). Then the reaction mixture interacts with a blocking agent) in the presence of a catalyst D).

Preferably in the method according to this invention is used is from 40 to 80 wt.% component A), from 1 to 40 wt.% component B), from 15 to 60 wt.% component b) and from 0 to 30 wt.% component G), and the sum of A)+B)+C)+D) is 100 wt.%.

Particularly preferably, in the method according to this invention is used from 45 to 75 wt.% component A), from 1 to 35 wt.% component B), from 20 to 50 wt.% component b) and from 0 to 20 wt.% component G), and the sum of A)+B)+C)+D) is 100 wt.%.

Most preferably, in the method according to this invention is used from 50 to 70 wt.% component A), from 3 to 30 wt.% component B), from 25 to 45 wt.% component b) and from 0 to 10 wt.% component G), and the sum of A)+B)+C)+D) is 100 wt.%.

Hydrophilisation blocked polyisocyanates may optionally contain stabilizers and other auxiliary substances (E), and optionally organic solvents W). In the calculation of the product of the interaction of the components a) to G) shall apply, stabilizers and/or auxiliary materials the performance communications substances E) in an amount of 0-25 wt.%, preferably 0-15 wt.%, most preferably 0-5 wt.%, and organic solvents W) in an amount of 0-30 wt.%, preferably 0-20 wt.%, most preferably 0-10 wt.%.

It is most preferable not to apply the solvent W).

The polyisocyanates according to the invention can be used, for example, for the preparation of varnishes, coatings, dressings, adhesive and molded products.

Another subject of the invention are aqueous solutions or dispersions of polyisocyanates according to the invention, as well as the retrieval method in which hydrophilic polyisocyanates according to the invention are mixed with water or water-containing solvents.

Water system blocked polyisocyanates have a dry matter content of 10 to 70 wt.%, preferably from 20 to 60 wt.% and most preferably from 25 to 50 wt.%, and share contained, if necessary, an organic solvent W) is less than 15 wt.%, preferably less than 10 wt.%, most preferably less than 5 wt.%. Available if necessary, the solvent W) can be separated, e.g. by distillation.

And, finally, the subject invention are coating materials containing

a) one or more polyisocyanates according to the invention,

b) one or more film-forming resins,

C) optionally catalysts,

g) optionally, a solvent, water,

d) optionally auxiliary substances and additives and the method of their manufacture, in which components a) to d) are mixed with each other in any order.

As a film-forming resin (b) is suitable polymers with functional groups that are able to give a dispersion or emulsion in water, soluble in water, existing in the form of dispersions in water. Examples of such polymers are polymers based on polyesters or polyesters containing epoxy groups, polyurethanes, acrylic polymers, vinyl polymers such as polyvinyl acetate, polyurethane dispersions, polyacrylate dispersion, hybrid polyurethane-polyacrylate dispersions, dispersions of polyvinyl simple or complex esters, polystyrene and polyacrylonitrile dispersion, which can be used in mixtures and in combination with other blocked polyisocyanates and amino, forming cross-links, such as, for example, melamine resin. The solids in the film-forming resin is preferably 10-100 wt.%, most preferably 30-100 wt.%.

Film-forming resin (b) may have a group reactive towards isocyanates, such as, for example, carboxyl or GI is roxannie group, and thus in combination with polyisocyanates according to the invention be structured. If film-forming resins have no groups reactive toward isocyanates, it is possible that the binder or dressing or coating will react with the substrate to which they are applied.

Suitable catalysts for curing are all well-known specialists in catalysts for the reactions of addition of the isocyanate, such as, for example, dibutyltindilaurate (DBTL), triethylamine, 1,4-diazabicyclo[2.2.2]octane or diktat zinc. Preferred is dibutyltindilaurate.

These catalysts are used in quantities of from 0 to 5 wt.%, preferably from 0.05 to 2 wt.%, in particular from 0.1 to 1.5 wt.%, in the calculation of the total number of material for coatings.

Another object of the invention is the coating obtained from the coating materials according to this invention.

The coating materials according to this invention can be applied to the substrate by any known method, such as dipping, spray drenching, roller or spray.

Suitable substrates for coating are, for example, metals, wood, glass, fiberglass, carbon fiber, stone, ceramic minerals, concrete, polymer materials of all kinds, textiles, leather, paper, hard is Alekna, straw or bitumen, and, if necessary, before coating with the coating materials according to this invention is applied primer. Preferred substrates are polymeric materials, fiberglass, carbon fiber, metals, textiles and leather.

The coating materials according to this invention otverzhdajutsja in a hot dryer for 15-30 minutes at temperatures from 100 to 200°C, preferably from 110 to 180°C. the heat-drying is particularly dependent on the amount of used catalyst. Preferably the drying is carried out for 30 minutes at a temperature of 110-140°C.

Examples

In the following examples, all percentage data relate to the weight (wt.%).

Determination of the NCO content was carried out by titration according to DIN EN ISO 11909 (titration by dibutylamino).

Example 1

Mixed of 21.9 g of a monofunctional polyether obtained by alkoxycarbonyl n-butanol with a mixture of ethylene oxide/propylene oxide (about 85:15)with an average molecular weight of 2250 (hydroxyl number 25) (Polyether LB 25, Bayer AG, Leverkusen, Germany), output reached 125.5 g, which contains groups of MDI, based on 1,6-diisocyanatohexane (HDI) with an NCO content of 21.8 percent (HDI-polyisocyanate with which the structure, the viscosity of 3200 MPa·, Desmodur® N3300, Bayer AG, Leverkusen) and 0.25 g of ethylhexanoate zinc and on revali the mixture with stirring to 50° C. and Then for 30 min was added to 75.8 g of ethyl ether, Cyclopentanone-2-carboxylic acid. After the addition the mixture was stirred 20 min at 50°it was added to 7.0 g of the product of the merger of 1 mole of hydrazine hydrate is added to 2 moles of propylene carbonate has a molecular weight of 236 and stirred until then, until it reached theoretical NCO value. Then within 10 min to the resulting reaction mixture was added a solution of 17.4 g AAS-solution (45%aqueous solution of sodium salt of 2-(2-aminoethylamino)econsultancy, Bayer AG, Leverkusen, Germany) and 121,9 g of water and the reaction mixture was stirred for another 5 minutes, the Dispersion was carried out by adding 420,8 g of water (T=60°C) for 10 minutes subsequent stirring was 2 hours was Obtained dispersion with a dry matter content of 30.0%.

Example 2

Mixed of 21.9 g of a monofunctional polyether obtained by alkoxycarbonyl n-butanol with a mixture of ethylene oxide/propylene oxide (about 85:15)with an average molecular weight of 2250 (hydroxyl number 25) (Polyether LB 25, Bayer AG, Leverkusen, Germany), output reached 125.5 g, which contains groups of MDI, based on 1,6-diisocyanatohexane (HDI) with an NCO content of 21.8 percent (HDI-polyisocyanate with which the structure, the viscosity of 3200 MPa·, Desmodur® N3300, Bayer AG, Leverkusen) and 0.15 g of ethylhexanoate zinc and the mixture was heated with stirring to 50° C. and Then for 30 min was added to 75.8 g of ethyl ether, Cyclopentanone-2-carboxylic acid. After the addition the mixture was stirred 20 min at 50°it was added to 7.0 g of the product of the merger of 1 mole of hydrazine hydrate is added to 2 moles of propylene carbonate has a molecular weight of 236 and stirred until then, until it reached theoretical NCO value. Then within 10 min to the resulting reaction mixture was added a solution of 18.3 g AAS-solution (45%aqueous solution of sodium salt of 2-(2-aminoethylamino)econsultancy, Bayer AG, Leverkusen, Germany) and 146,0 g of water and the reaction mixture was stirred for another 5 minutes, the Dispersion was carried out by the additive was 400.0 g of water (T=60°C) for 10 minutes subsequent stirring was 2 hours was Obtained dispersion with a dry matter content of 30.0%.

Example 3

Mixed of 21.9 g of a monofunctional polyether obtained by alkoxycarbonyl n-butanol with a mixture of ethylene oxide/propylene oxide (about 85:15)with an average molecular weight of 2250 (hydroxyl number 25) (Polyether LB 25, Bayer AG, Leverkusen, Germany), to 121.6 g, which contains groups of MDI, based on 1,6-diisocyanatohexane (HDI) with an NCO content of 21.8 percent (HDI-polyisocyanate with which the structure, the viscosity of 3200 MPa·, Desmodur® N3300, Bayer AG, Leverkusen) and 0.12 g of ethylhexanoate zinc and the mixture was heated with stirring to 50° Statem for 30 min was added by 73.4 g of ethyl ether, Cyclopentanone-2-carboxylic acid. After the addition the mixture was stirred 20 min at 50°it was added to 7.0 g of the product of the merger of 1 mole of hydrazine hydrate is added to 2 moles of propylene carbonate has a molecular weight of 236 and stirred until then, until it reached theoretical NCO value. Then for 10 min was added a solution of 15.5 g hydrophilizing funds KV 1386 (40%aqueous solution of sodium salt of N-(2-amino-ethyl)-β-alanine, BASF AG, Ludwigshafen, Germany) and 108,4 g of water and the reaction mixture was stirred for another 5 minutes, the Dispersion was carried out by adding 417,2 g of water (T=60°C) for 10 minutes subsequent stirring was 2 hours was Obtained dispersion with a dry matter content of 30.0%.

Example 4

Mixed 23,6 g monofunctional polyether obtained by alkoxycarbonyl n-butanol with a mixture of ethylene oxide/propylene oxide (about 85:15)with an average molecular weight of 2250 (hydroxyl number 25) (Polyether LB 25, Bayer AG, Leverkusen, Germany), 18,9 g containing polypropyleneoxide simple polyethersulfone (hydroxyl number 263, the average molecular weight of 426 g/mol, Bayer AG, Germany), 135,1 g, which contains groups of MDI, based on 1,6-diisocyanatohexane (HDI) with an NCO content of 21.8 percent (HDI-polyisocyanate with which structure is, the viscosity of 3200 mPas, Desmodur® N3300, Bayer AG, Leverkusen) and 0.28 g of ethylhexanoate zinc and the mixture was heated with stirring to 50°C. and Then for 30 min was added to 81.6 g of ethyl ether, Cyclopentanone-2-carboxylic acid. After the addition the mixture was stirred 20 min at 50°it was added to 7.5 g of the product of the merger of 1 mole of hydrazine hydrate is added to 2 moles of propylene carbonate has a molecular weight of 236 and stirred until then, until it reached theoretical NCO value. Dispersion was carried out by adding 622,4 g of water (T=60°C) for 10 minutes subsequent stirring was 2 hours was Obtained dispersion with a dry matter content of 29.9%.

Example 5

Mixed with 25.3 g of a monofunctional polyether obtained by alkoxycarbonyl n-butanol with a mixture of ethylene oxide/propylene oxide (about 85:15)with an average molecular weight of 2250 (hydroxyl number 25) (Polyether LB 25, Bayer AG, Leverkusen, Germany), 6.4g dimethylolpropionic acid, 144,8 g, which contains groups of MDI, based on 1,6-diisocyanatohexane (HDI) with an NCO content of 21.8 percent (HDI-polyisocyanate with which the structure, the viscosity of 3200 mPas, Desmodur® N3300, Bayer AG, Leverkusen) and 0.29 grams of ethylhexanoate zinc and the mixture was heated with stirring to 50°C. and Then for 30 min was added for 87.4 g of ethyl ether, Cyclopentanone-2-carboxylic acid. The village is e added, the mixture was stirred 20 min at 50° Since it was added to 8.1 g of the product of the merger of 1 mole of hydrazine hydrate is added to 2 moles of propylene carbonate has a molecular weight of 236 and stirred until then, until it reached theoretical NCO value. Then was added 4.6 g of triethylamine and stirring continued for another 10 min at 50°C. the Dispersion was carried out by adding 634,4 g of water (T=60°C) for 10 minutes subsequent stirring was 2 hours was Obtained dispersion with a dry matter content of 30.0%.

Example 6

In a three-neck flask with a capacity of 250 ml with a mechanical stirrer was placed 67,7 g (0,35 EQ.) MDI based on 1,6-diisocyanatohexane (HDI) with an NCO content of 21.8 percent (HDI-polyisocyanate with which the structure, the viscosity of 3200 MPa·, Desmodur® N3300, Bayer AG, Leverkusen) with 34 mg of 2-ethylhexanoate zinc (Octa-Soligen® Zink, Borchers GmbH, Monheim, Germany) and dissolved in 20.5 g methoxypropylacetate (80% solids). To this solution was carefully added dropwise with stirring was added 40,5 g (0,259 EQ.) ethyl ester of 2-cyclopentanecarbonyl acid so that the reaction temperature did not exceed 40°C. After reaching the desired values NCO (2,97%) was added to 20.1 g (0,091 EQ.) CAPS (cyclohexanedicarboxylate, f-mA Raschig, Germany) and 11.6 g (0,091 EQ.) dimethylcyclohexylamine and the mixture was stirred at 80°until then, until he had a clear solution. PE is ed by dispersion system brought with methoxypropylacetate until a solids content of 70%. Thus obtained hydrophilizing the polyisocyanate was dispersible in the water before the formation of a 40%dispersion with the formation of stable dispersions.

Determination of mechanical properties hydrophilizing blocked polyisocyanates according to the invention was carried out on free films. To get free films hydrophilisation blocked polyisocyanates mixed with film-forming resin. These mixtures were prepared from 60 wt.% Baybond® PU 401 (anionic-nonionic polyurethane dispersion with a dry matter content of 40% and an average particle size of 100-300 nm, Bayer AG, Germany (film forming resin)and 40 wt.% hydrophilizing blocked MDI according to this invention.

Free films were prepared from these mixtures as follows. In a device for obtaining films consisting of two polished rolls that can be installed at a precise distance from each other, in front of the lower roller insert the separating paper. Using the sensor, flat-caliber set the distance between the paper and the front roller. This distance corresponds to the film thickness (wet) of the resulting coating and can be installed on the desired thickness of each layer of varnish. The coating can be made of several layers. For deposition of the individual layers products (Vya the bone water compositions in advance is set by the value of 4500 MPa· with the addition of a mixture of ammonia/polyacrylic acid) is poured in the gap between the paper and the front roller, the separating paper is pulled down, and the paper is formed corresponding film. If you want to apply a few layers of lacquer, each individual layer is dried and the paper insert again.

The definition of 100% of the module is carried out according to DIN 53504 on the film, of a thickness of >100 μm.

Determination of average particle size (indicated srednekamennogo value) in the polyurethane dispersions was performed using laser correlation spectroscopy (instrument: Malvern Zetasizer 1000, Malver Inst Limited). The results are shown in the table.

A mixture of 1Mix 2
Film-forming resin 2)Baybond® PU 401Baybond® PU 401
Percentage60 wt.%77 wt.%
Hardener 1)The dispersion from example 1 (according to izopet.)The dispersion from example 2 (according to izopet.)
Percentage40 wt.%23 wt.%
The average particle size156 nm159 nm
Drying conditions10 min, 125°10 min, 125°
Preparation of a mixture Add 1 to 2); 5 min stirring at room temperatureAdd 1 to 2); 5 min stirring at room temperature
Tensile test: 0-
100% modulus [MPa]0,62,8
Ultimate tensile strength [MPa]5,530,0
Elongation at break [%]11401150

Similarly prepared films of mixtures 1 and 2, which were dried for 24 hours at 25°With, are very sticky, and their mechanical properties can be determined. The table below shows test results of the films show that at low temperature drying (125° (C) the curing of films.

1. The method of producing polyisocyanates, in which

A) one or more organic polyisocyanates interact with

B) one or more containing at least one reactive towards the isocyanate group of organic compounds that have

B1) non-ionic Hydrophilidae groups on the basis of simple polyalkyleneglycol containing at least 30 wt.% ethylenoxide links, and/or

B2) ionic or potentially ionic Hydrophilidae group, about auusie when interacting with water depending on the pH equilibrium of dissociation, and depending on the pH without charge, charged positively or negatively,

C) one or more blocking means containing at least one with CH-acidic cyclic ketone of General formula (2)

where X is an electron-acceptor group,

R1, R2mean independently from each other hydrogen atom, a saturated or unsaturated aliphatic residue, containing up to 12 carbon atoms and

n is 1,

and

D) optionally one or more (cyclo)aliphatic mono - or polyamines with the number of amino groups in the molecule from 1 to 4 and a molecular weight of up to 400, and optionally one or more polyhydric alcohols with the number of hydroxyl groups in the molecule from 1 to 4 and a molecular weight of up to 400, if necessary, also with aminoalcohols in the presence of

D) one or more catalysts,

E) optionally auxiliary substances and additives and

G) optionally solvents.

2. The polyisocyanates obtained by the method according to claim 1, which contain

i) non-ionic Hydrophilidae groups on the basis of simple polyalkyloxy-polyethers containing at least 30 wt.% ethylenoxide links, and/or (ii) ion or sweaty the constraints ion Hydrophilidae group, which upon contact with water form depending on the pH equilibrium of dissociation, and depending on the pH without charge, charged positively or negatively, and

iii) at least one structural unit of formula (1)

where X is an electron-acceptor group,

R1, R2mean independently from each other hydrogen atom, a saturated or unsaturated aliphatic residue, containing up to 12 carbon atoms and

n is 1.

3. The polyisocyanates according to claim 2, characterized in that the electron-acceptor group, X means ester, sulfoxide, sulfonic, nitro, phosphonate, nitrile, isonitrile or carbonyl group.

4. The use of polyisocyanates according to claim 2 or 3 for the manufacture of varnishes, coatings, dressings, adhesives, and molded products.

5. Coating materials containing

a) one or more polyisocyanates according to claim 2 or 3,

b) one or more film-forming resins,

C) optionally catalysts,

g) if necessary, the solvent and

d) optionally auxiliary substances and additives.

6. Aqueous dispersion of polyisocyanates according to claim 2 or 3.



 

Same patents:

FIELD: compositions for coats.

SUBSTANCE: proposed composition includes heterocyclic silicon compound containing at least one alcohol-orthosilicate group and cross-linking agent interacting with hydroxylic groups. Proposed composition has low content of volatile organic solvents and is hardened at temperature of 5°C ; hardened composition contains no unreacted low-molecular blocking agents which are likely to evolve into surrounding atmosphere at hardening or during operation. Besides that, ratio of life to time to drying time is favorable. Proposed composition may be used for finishing and secondary finishing of automobiles and large transport facilities; it may be also used as an adhesive.

EFFECT: enhanced efficiency.

14 cl, 4 tbl

FIELD: polymerization processes.

SUBSTANCE: invention relates to two-component composition used to initiate curing of one or more polymerizable monomers that are cured when affected by free radicals, which composition consists of organoborane-amino complex and an isocyanate capable of destroying organoborane-amino complex, wherein equivalent ratio of amine nitrogen atoms to boron atoms ranges from more than 4.0:1 to 20.0:1. In another embodiment of invention, subject of invention is two-component composition for use as sealing materials, coatings, primers for modifying polymer surfaces, and as molded resins, which composition consists of component 1: organoborane-amino complex wherein ratio of amine nitrogen atoms to boron atoms ranges from more than 4.0:1 to 20.0:1; component 2: one or more monomers, oligomers, or polymers having olefinic instauration, which are able of being subjected to free-radical polymerization; and effective amount of an isocyanate, which can initiate dissociation of complex to free borane for initiation of polymerization of one or more monomers, oligomers, or polymers having olefinic instauration, provided that complex dissociation initiator is stored separately from complex until initiation of polymerization becomes desirable. Such compositions are handling safe, i.e. they are not self-inflammable, stable at or near ambient temperature and so they do not initiate polymerization at or near ambient temperature in absence of complex dissociation initiator. Polymerized composition show good cohesion and adhesion strength. Described are polymerizable composition polymerization process, method of gluing two or more substrates using polymerizable composition; method of modifying polymer surface having low surface energy using polymerizable composition, as well as coating and laminate containing polymerizable composition.

EFFECT: enlarged resource of polymerizable compositions and expanded application areas thereof.

10 cl, 2 dwg, 4 tbl

FIELD: building materials.

SUBSTANCE: invention relates to a hardening composition used in building industry. The composition comprising a polymer with two or more thiol groups per a molecule, compound with two or more isocyanate groups per a molecule, carbon black and calcium carbonate involves additionally a filling agent wherein silicic acid or silicate is the main component or organic filling agent wherein ground powdered carbon as the main component. The composition shows satisfactory stability in storing the basic compound and the hardening capacity even after storing the basic compound and, except for, it forms the hardened join with sufficient rupture strength limit, hardness and properties of barrier for gas. The composition comprises a hydrocarbon plasticizer and an organometallic compound preferably that provides highly effective hardening properties in combination with higher mechanical strength and properties of barrier for gas. Proposed hardening composition can be used as sealing material in manufacturing isolating glasses, frames, windows for transportation means, glues and covers.

EFFECT: improved and valuable technical properties of composition.

9 cl, 12 tbl, 11 ex

FIELD: polymer materials.

SUBSTANCE: invention relates to polymer compositions including at least one polyurethane prepolymer A with isocyanate terminal groups obtained from at least one polyisocyanate with at least one polyol A1 and, if necessary, with at least one polyol A2. wherein A1 is linear polyoxyalkylenepolyol with unsaturation degree ,less than 0.04 m-equ/g; A2 is polyol, which is present in amount 0-30%, preferably 0-20%, in particular 0-10% based on total amount A1+A2; and at least one polyaldimine B. Composition is a mixture of polyurethane prepolymer A with polyaldimine B. In absence of moisture, such compositions are stable on storage. When being applied, such compositions are brought into contact with moisture, after which polyaldimines are hydrolyzed into aldehydes and polyamines, and polyamines react with polyurethane prepolymer containing isocyanate groups. Products obtained from such composition possess very wide spectrum of properties, including tensile strength varying within a range from 1 to 20 MPa and ultimate elongation above 1000%. Composition may be used as glue, hermetic, coating, or facing.

EFFECT: expanded possibilities of polyurethanes.

3 cl, 7 tbl, 34 ex

FIELD: polymer materials.

SUBSTANCE: invention relates to compositions based on polyols and high-molecular weight diisocyanates with low monomer content as well as to a method for preparation of indicated compositions as binders for reactive glues. In particular, invention provides reactive polyurethane composition based on polyols and high-molecular weight diisocyanates prepared by reaction of diols having average number molecular weight mot higher than 2000 with monomeric diisocyanates having molecular weight not higher than 500. Thus obtained high-molecular weight diisocyanates have maximum monomer content 10%. Invention also describes a method for preparation of indicated composition. Thus obtained compositions are used as glues/hermetics imparting improved adhesion characteristics and having significantly reduced contents of health-detrimental monomeric diisocyanates having molecular weight below 500. For instance, resistance to detachment of film attached to surface using claimed glue is 4.3 N/mm, heat resistance lies at a level of 148°C, and frost resistance below -30°C.

EFFECT: improved adhesive characteristics.

13 cl, 3 tbl, 20 ex

Glue composition // 2271377

FIELD: adhesives.

SUBSTANCE: invention relates to compositions based of synthetic high-molecular weight compounds and, in particular, to composition comprising polyurethane-based preparation DESMOCOLL, perchlorovinyl resin, epoxide resin, aliphatic-series polyamine, and polar organic solvent.

EFFECT: enabled retention of high elasticity of glue joint and considerably increased gluing strength for siloxane-coated materials, kapron fabrics, and glass cloth.

1 tbl

FIELD: gluing compositions.

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EFFECT: improved and valuable properties of composition.

5 tbl

FIELD: rocketry; development of a composition of binding substance for manufacture of the brush type products.

SUBSTANCE: the invention is pertaining to the field of rocketry, in particular, to development of a composition of binding substance for manufacture of the brush type products. The composition contains, in mass %: hydroxyl-containing polybutadiene rubber - 31.0-33.0; zinc oxide or carbon technical - 7.4-8.0; 1.4- butyleneglycol - 0.7-0.8; trimethylolpropane - 0.08-0.1; transformer oil - 5.2-5.6; stannous dibutyldilaurate - 0.013-0.036; a hardener - oligodiene urethane prepolymer in a combination with 20 % solution of triphenylmethanetriisocyanate in dichlorethane or 27 % solution of triphenylmethanetriisocyanate in ethylacetate with the contents of isocyanate groups of 3.5-4.5% and 53.0-55.5%. The technical result of the invention - manufacture of the composition of binding substance with the high mechanical, binding and operational characteristics and with provision of serviceability of the finished products in the range of temperatures from plus 50°C to minus 50°C at action of high loadings.

EFFECT: the invention ensures production of the binding substance composition with high mechanical, binding and operational characteristics and serviceability of the finished products at the temperatures of plus 50°C - minus 50°C at action of high loadings.

1 tbl

Glue composition // 2259381

FIELD: rocket engineering and adhesives.

SUBSTANCE: invention provides composition for attaching solid fuel charge to rocket engine body, said composition being constituted by oxidant, fuel, binder based on synthetic rubber plasticized with mineral plasticizer, transformer and vaseline oils, curing additives, and catalysts. More specifically, glue composition contains urethane rubber with intrinsic viscosity [η] = 0.3-1.3 Dl/g and weight percentage of double bonds 0.5-2.5%, curing agent of the type of dinitrile oxides reactive to double bonds, and solid epoxide resin from diphenylolpropane and epychlorhydrin as active filler.

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9 tbl, 7 ex

The invention relates to a stable form, adhesive pencil, which can be used not only for bonding paper, but as a universal adhesive, and method of its manufacture

FIELD: metallurgy.

SUBSTANCE: invention concerns field of tubes or fittings protection against corrosion or against formation of undesirable deposition, and also concerns field of metallic material multiple coating. It is implemented consecutive plating on metallic surface layers with different coefficients of thermal dilatation from suspension of polymer compound, containing polyurethane compound with admixture, influencing on coefficient of thermal dilatation and soaking of each layer till composition polymerisation. In the capacity of admixture influencing on coefficient of thermal dilatation of polymeric composition, it is used catalytic admixture and applied each of following layers from suspension of polymeric composition, containing greater quantity of catalytic admixture, than previous layer. Suspension contains catalytic admixture in amount 0.01-3 wt % per 1 kg of suspension.

EFFECT: providing of creation of durable and lasting anticorrosive coating, not subjected to destruction in conditions of temperature cycling, impingement attack and abrasive action.

5 cl, 1 tbl

FIELD: chemistry.

SUBSTANCE: invention concerns quickly solidifying polyurethane-based polymer compositions with enhanced adhesion to metal surfaces and can be applied in production of protective coatings, sealing glues, mastics, particularly for sealing of perforated holes in paper-making machines. Composition includes polyfurite urethane forpolymer, liquid solidifier based on 3,3'-dichlor-4,4'-diaminodiphenylmethane and polyoxytetramethyleneglycol with molecular weight of 1000 at mol ratio of 0.95:0.1, aerosil, and additionally contains glycidylmetacrylate as adhesion additive, and can include di-(2-ethylhexyl)phthalate as plastifyer.

EFFECT: obtaining composition with high adhesion to metal surfaces and improved thixotropy without impairing high physical and mechanical characteristics level.

2 tbl, 6 ex

FIELD: chemistry.

SUBSTANCE: invention pertains to polyurethane resin, which is a product of a reaction between at least one diisocyanate and components, containing functional groups, which have capacity to react with isocyanates, with the following composition: (a) first group, which is formed by one or more polyester-polyols based on ethers, each of which has average molecular mass ranging from 400 to 12000 g/mol, (b) second group, formed by one or more poly hydroxilated resins, chosen from a defined group of resins, (c) optional third group, formed by one or more polyols, each of which has average molecular mass, equal to or less than 800 g/mol, which are also chosen from a defined group of polyols, and (d) at least one amine and a reaction chain-stopping agent. The ratio of equivalent masses of diisocyanate and components, containing functional groups, with capacity to react with isocyanates, is chosen such that, naturally all isocyanate groups of diisocyanate are present as a product of the reaction with one of the above mentioned functional groups, with capacity to react with isocyanates. The invention also relates to the method of obtaining the above mentioned polyurethane resin, to polyurethane resin obtained through such methods, to coating for plastic substrates, containing the proposed resin, as a polyolefin binding substance, to use of such a polyurethane resin as a film forming substance in printing ink for printing on plastic substrates, as well as to the method of obtaining a laminate, which has a layer obtained when printing an image, including stages (a)-(d), with use of coating from polyurethane resin, and to a laminate, obtained using such a method.

EFFECT: obtaining a coating from polyurethane resin, with good heat resistance and excellent initial adhesiveness.

20 cl

FIELD: chemistry.

SUBSTANCE: coating for application to worn surfaces comprising composition including at least one curable polyurethane and at least one chlorinated polyolefine which provides improved adhesion to a worn surface as compared to adhesion of a coating composition including the same at least one curable polyurethane but not including at least one chlorinated polyolefine. The method of refinishing a worn surface comprises application of a curable polyurethane top finishing coating that includes at least one chlorinated polyolefine to the worn surface, and curing the curable polyurethane top finishing coating, wherein, before application of the curable polyurethane top finishing coating, the worn surface is treated with a solvent without any mechanical scraping.

EFFECT: improved interlayer adhesion.

37 cl, 3 tblr

FIELD: chemistry.

SUBSTANCE: scope of invention covers stabilized water dispersions of curing agent suitable for coating preparation. Dispersion dispersed in water contains the following components: A1) at least one organic polyisocyanate with isocyanate groups connected in aliphatic, cycloaliphatic, araliphatic and/or aromatic manner, A2) ionic or potentially ionic and/or non-ionic substance, A3) blocking agent, B) stabilizer containing a) at least one amine with structural element of common formula (I) without any hydrazide group, b) substance with formula (IV) .

EFFECT: resistance to thermal yellowing increases.

6 cl, 5 tbl, 11 ex

FIELD: technological processes.

SUBSTANCE: method of coating application onto non-polar base includes stages of applying primer that contains one or more non-polar polymers polyolefins with silane functional groups onto non-polar base, and then applying one or more layers of pigmented coating above the primer layer. The primer contains resin based on alkyl aromatics and non-polar polyolefin, which contains silane groups.

EFFECT: primer demonstrates proper adhesion on non-polar bases without reduction of chemical resistance.

14 cl, 1 tbl, 5 ex

FIELD: protecting covers.

SUBSTANCE: invention relates to dye-cover. Proposed dye-cover is prepared from composition comprising components taken in the following ratio, wt.-%: binding agent, 20-30; hollow microspheres, 10-30, and organic solvent, the balance. A binding agent is chosen from group comprising organosilicon resin, acrylic (co)polymer, polyurethane. Ceramic or glass hollow microspheres of size 20-150 mc are uses as hollow microspheres. The composition can comprise additionally titanium dioxide in the amount 2-5 wt.-% and antipyrene additive in the amount 5-25 wt.-%. Invention provides refractoriness, atmosphere resistance and exploitation period. The proposed dye-cover possesses heat-insulting, sound-insulating, waterproofing properties simultaneously and designated for protecting different equipment, pipelines, metallic, concrete, ferroconcrete, brick, wood and other building constructions for habitable, common knowledge and industrial buildings and constructions.

EFFECT: improved and valuable technical properties of dye-cover.

2 tbl, 9 ex

FIELD: compositions for coats.

SUBSTANCE: proposed composition includes heterocyclic silicon compound containing at least one alcohol-orthosilicate group and cross-linking agent interacting with hydroxylic groups. Proposed composition has low content of volatile organic solvents and is hardened at temperature of 5°C ; hardened composition contains no unreacted low-molecular blocking agents which are likely to evolve into surrounding atmosphere at hardening or during operation. Besides that, ratio of life to time to drying time is favorable. Proposed composition may be used for finishing and secondary finishing of automobiles and large transport facilities; it may be also used as an adhesive.

EFFECT: enhanced efficiency.

14 cl, 4 tbl

FIELD: thermo-setting heat-activated paint compositions, application of such composition on substrate.

SUBSTANCE: proposed composition contains at least one amorphous binder at Ts below 5C and/or at least one crystalline or semi-crystalline binder at melting point or interval of melting points below 150C, at least one epoxy resin, at least one polyamine including cyanamide groups, at least one blocked or latent catalyst in the amount of 0.5-5 mass-%; this catalyst is deblocked or activated at elevated temperature below hardening temperature of paint composition. Paint composition is characterized by Ts below 5C and viscosity below 2000 mPa·sec measured at temperature of 80C and shift rate of 10 c-1. The method of application of coat to substrate includes the following stages: first, paint composition is heated to temperature of application, then, composition is applied on substrate and paint thus applied is heated to temperature of its hardening till complete hardening. Paint composition is used for application onto mirror reverse surface, onto metal surface or onto substrate sensitive to heating. This composition forms thin anti-corrosive coat free from volatile organic compounds which may be used at temperature of application between 100 and 160C by employing the methods of application at low temperatures.

EFFECT: enhanced efficiency.

15 cl, 3 tbl, 9 ex

FIELD: chemical industry; other industries; production of the polymeric coatings on the substrates by the baking for cure.

SUBSTANCE: the invention is pertaining to the polymeric coatings produced on the substrates by the baking for cure. The technical result of the invention is development of the varnishes for the baking for cure, which are mainly detach the harmless products and make the solid coatings resistant to the action of the dissolvents. The invention presents the coatings produced on the substrates by the baking for cure of the mixture consisting of 1 mass share of styrene copolymer and the allyl alcohol treated with diisocynotams with the contents of the OH-group from 1 up to 10 %; 0.05-1 mass share of the oxalic acid; 0.2-5 mass share of the organic solvents and, if necessary, of pigments and the auxiliary components for the varnishes, at the temperatures from 120°С up to 250°С and durations of the baking for cure from 1 up to 200 minutes. The produced coatings have the high hardness and positive stability to the action of the dissolvents. At that during the baking for cure only the dissolvent and water are separated.

EFFECT: the invention ensures development of the varnishes for the baking for cure, which are mainly detach the harmless products and make the solid coatings resistant to the action of the dissolvents.

1 cl, 5 ex

FIELD: chemistry.

SUBSTANCE: composition includes catalyst- dimethylethanolamine, stabiliser - surface - active substance based on oxyalkylene methylsiloxane block copolymers, and additionally contains foaming agent - water.

EFFECT: ecological safety, preserving catalyst ability during long storage and ensuring obtaining rigid foam-polyurethane, optimal for formation of even product structure start time, density and improved strength characteristics.

2 tbl

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