Coating composition containing polyacrylate polyol, polyether polyol, and isocyanate-functionalised cross-linking agent

FIELD: chemistry.

SUBSTANCE: invention relates to a coating composition containing a) polyacrylate polyol obtained via polymerisation of unsaturated olefin monomers, where at least 40 wt % of the monomers include straight or branched alk(en)yl or alk(en)ylene groups, having at least 4 carbon atoms; b) polyether polyol obtained via esterification of component links having functional groups which form an ester, where at least 30 wt % of component links include straight or branched alk(en)yl or alk(en)ylene groups with at least 4 carbon atoms per functional group, which forms an ester, where he polyether polyol has hydroxyl number higher than 280 mg KOH/g and hydroxyl functionality of at least 2, and c) isocyanate-functionalised cross-linking agent. The invention also relates to a set of parts for preparing the coating composition and a method of applying the coating composition. The coating composition can be used as a top coating layer in multilayer paint coats, in finishing or reworking automobiles or large vehicles.

EFFECT: coating has high hardness, scratch resistance, lustre, longevity and wear resistance, chemical resistance and UV radiation resistance.

15 cl, 6 tbl

 

The invention relates to compositions for coatings containing polyol based on polyacrylate copolymer, a polyester polyol, and isocyanate-functionalized crosslinking agent. The invention additionally relates to a kit of parts for the preparation of compositions for coating and method of applying the composition for cover.

Composition for coating the above-mentioned type is known from international patent application WO 96/20968. This document relates to compositions for coating with a high solids content, containing the hydroxy-functionalized branched polyester having a hydroxyl number of from 80 to 280 mg KOH/g, a hydroxy-functionalized acrylic or methacrylic copolymer, and a crosslinking agent.

European patent application EP 0688840 And describes compositions for coatings containing hydroxy-functionalized polyester having a hydroxyl number of from 40 to 200 mg KOH/g, (meth)acrylate copolymer containing a hydroxy-group, and a crosslinking agent.

With regard to known compositions for coatings, in the case when you need a very high solids content, a satisfactory value of properties cannot be achieved. For example, increasing the share of hydroxy-functionalized branched polyester for expenditure of the hydroxy-functionalized acrylic is or methacrylic copolymer in the compositions of WO 96/20968 leads to a lower content of volatile organic compounds (VOC) composition. However, this leads to longer drying times and reduced hardness of the coatings, as well as the risk of influx (defect coverage) and/or capture dirt. Thus, a satisfactory combination of very high solids and very short drying time cannot be achieved. Longer drying times are undesirable from the standpoint of high performance operations coating. In addition, the most well-known compositions for coatings containing a high loading of catalyst to obtain a short drying time, undergo stabilization of foam in drying the coating, leading to perforations/pores in the dried coating layer. Holes/pores impair the appearance and durability/wear resistance of the cover layers.

Thus, the inventors aim to provide a composition for coating having satisfactory correlation properties, i.e. a low content of volatile organic solvent with a viscosity of coating, fast drying, resulting in coatings with good characteristics of appearance, in particular, with low susceptibility to the formation of perforations/pores, and good hardness. In addition, the composition for coating must also provide ocvered the appropriate coverage, showing other properties required for the external surfaces of vehicles, such as flexibility, resistance to scratching, gloss, durability/wear resistance and resistance to chemicals and UV radiation.

The invention provides a composition for coating, including

and) polyacrylate polyol obtained by polymerization of unsaturated olefinic monomers, where at least 40 wt.% monomers include linear or branched ALK(EN)ilen or ALK(EN)renovia group having at least 4 carbon atoms;

(b) a polyester polyol obtained by the esterification of constituent units having a functional group forming the ester, where at least 30 wt.% the component parts include linear or branched ALK(EN)ilen or ALK(EN)renovia group having at least 4 carbon atoms, the functional group forming the ester, where the polyester polyol has a hydroxyl number above 280 mg KOH/g and a hydroxyl functionality (number of hydroxyl groups per molecule)of at least 2; and

(C) isocyanate-functionalized crosslinking agent.

Composition for coating according to the present invention provides a satisfactory ratio of the low content of volatile organic solvent with a viscosity of coating, bystrowski drying, low susceptibility to stabilize the foam in drying the coating and the presence of good appearance, in particular, a low predisposition to the formation of perforations/pores. In addition, the composition for coating also provides cured coatings exhibiting other properties required for the external surfaces of vehicles, such as good hardness and resistance to scratching, gloss, durability/wear resistance and resistance to chemicals and UV radiation.

It should be noted that in the international patent application WO 2002/098942 give examples of compositions for coatings without polyacrylate polyol containing a polyether polyol having a hydroxyl number in the range from 200 to 400 mg KOH/g

Composition for coating according to the present invention contains a polyacrylate polyol, where at least 40 wt.% monomers based on the total weight of monomers polyacrylate polyol, include linear or branched ALK(EN)ilen or ALK(EN)renovia group having at least 4 carbon atoms. The terms "ALK(EN)ilen group" means an alkyl group, alkeline groups and/or mixtures thereof. "ALK(EN)renovia group" include alkylene group, alkenylamine groups and/or mixtures thereof. As is customary in this field, the term "polyacrylate polyol" means a polymer that is available is many hydroxy groups, the resulting (co)polymerization of acrylic and/or methacrylic monomers. For the preparation of polyacrylate polyol can also be used other olefinic unsaturated curable monomers, such as vinyl aromatic monomers, other vinyl monomers and / or allyl monomers. Further in this document "acrylate and/or methacrylate" referred to as "(meth)acrylate".

As mentioned above, at least 40 wt.% monomers polyacrylate polyol include linear or branched ALK(EN)ilen or ALK(EN)renovia group having at least 4 carbon atoms. Preferably, at least 50 wt.% monomers and more preferably from 55 to 80 wt.% monomers based on the total weight of monomers polyacrylate polyol, include linear or branched ALK(EN)ilen or ALK(EN)renovia group having at least 4 carbon atoms. ALK(EN)ilen or ALK(EN)renovia group having at least 4 carbon atoms, may be linear or branched. Cyclic ALK(EN)ilen or ALK(EN)renovia groups do not provide the above advantages. Examples of suitable monomers include linear or branched ALK(EN)ilen or ALK(EN)renovia group having at least 4 carbon atoms, are esters of (meth)acrylic acid and a linear or rasvet is certain alcohols, having at least 4 carbon atoms. Examples of such monomers are n-butyl(meth)acrylate, isobutyl(meth)acrylate, tert-butyl(meth)acrylate, linear or branched pentyl-, hexyl-, heptyl-, octyl or higher (meth)acrylates. Can also be used ALK(EN)alsamixergui cycloaliphatic or vinylaromatic monomers, provided that they include linear or branched ALK(EN)ilen or ALK(EN)renovia group having at least 4 carbon atoms. Examples are tert-butylcyclohexyl(meth)acrylate or tert-butalbiral. Also are suitable vinyl esters, for example, benildeans or vinyltoluene. Because hydroxy-functionalityand monomers described below, include ALK(EN)ilen or ALK(EN)renovia group having at least 4 carbon atoms, such as hydroxybutyl(meth)acrylate, they can also contribute in the proportion of monomers, including ALK(EN)ilen or ALK(EN)renovia group having at least 4 carbon atoms.

Polyacrylate polyol has on average at least two functional hydroxy-group in the molecule. Functional hydroxy-group can be introduced into the polymer by means of hydroxy-functionalized monomers. Examples of suitable hydroxy-functionalized monomers are hydroxyalkyl words the basic esters of unsaturated mono - or diatrizoic carboxylic acids. Alkyl group hydroxyalkyl esters appropriately can have from 1 to 12 carbon atoms. Specific examples of suitable hydroxy-functionalized monomers are 2-hydroxyethyl(meth)acrylate, 2 - and 3-hydroxypropyl(meth)acrylate, 2-, 3 - and 4-hydroxybutyl(meth)acrylate and mixtures thereof. Additional examples are reaction products of (meth)acrylic acid, basis of itaconic acid, maleic acid or fumaric acid with monoepoxide compounds, such as ethylene oxide, glycidyloxy ethers, glycidyloxy esters, such as Cardura E10, and the like. Hydroxyl functionality can also be obtained from Monomeric precursors. For example, epoxy group glycidylmethacrylate link in the polymer can be converted into a functional hydroxy-group in the subsequent reaction of polymerization by contact with water or with a carboxylic acid.

Polyacrylate polyol includes other ethyleneamine of the polymerized monomers such as (meth)acrylic and/or vinyl monomers. As examples can be mentioned styrene, methylsterol, vinyltoluene, (meth)acrylic acid, methyl(meth)acrylate, ethyl(meth)acrylate, propyl(meth)acrylate, acrylamide, and vinyl acetate. Can also be used (meth)acrylates of cyclic alcohols, such as College the forces(meth)acrylate or isobornyl(meth)acrylate. Polyacrylate polyol may also contain a small amount up to about 10% of polymerized units of polyunsaturated monomers, such as alismataceae, etilenglikolevykh, hexaniacinate, trimethylolpropane and the like.

The monomers to obtain a polyacrylate polyol is chosen so that theoretical glass transition temperature (Tg) of a polyacrylate polymer, calculated according to the equation Fox was at least -15°C, preferably at least -5°C, more preferably at least 0°C. Suitable upper limit of theoretical glass transition temperature (Tg) is 125°C, preferably 100°C., more preferably 85°C. it Should be noted that in the case of low molecular weight polyacrylate polyols actual Tg can be significantly lower than theoretical Tg.

Hydroxyl number, on the basis of non-volatile substances, polyacrylate polyol is at least 60 mg KOH/g, preferably at least 85 mg KOH/g and more preferably at least 120 mg KOH/g Upper limit hydroxyl number of 200 mg KOH/g, preferably 180 mg KOH/g and more preferably 170 mg KOH/g

Srednekislye molecular weight (Mn) polyacrylate polyol is at least 800, preferably at least 1200 or more predpochtitel is but at least 1500. The upper limit of Mn is 10000, preferably 7000, and more preferably 5000. The polydispersity (Mw/Mn) polyacrylate polyol is less than 3.2, preferably less than 2.8, and more preferably less than 2.5.

Acid number, based on the nonvolatile matter, polyacrylate polyol is not particularly critical. It is at least 3 mg KOH/g, preferably 5 mg KOH/g and more preferably 7 mg KOH/g Upper limit of the acid number of 30 mg KOH/g, preferably 25 mg KOH/g and more preferably 20 mg KOH/g

Polyacrylate polyol can be obtained in a known manner, namely free radical polymerization of the above-mentioned unsaturated olefin polymerized monomers. The polymerization can be conducted in one or more stages and in the absence or in the presence of an organic solvent. When using an organic solvent, it is preferred to use a volatile solvent, which includes ALK(EN)ilen or ALK(EN)renovia group having at least 4 carbon atoms. Examples of such solvents are described below.

Suitable initiators forming radical groups, such as di-tert-butylperoxide, tert-butyl peroxybenzoate, tert-butyl peroxy-2-ethylhexanoate, tert-BUTYLPEROXY-3,5,5-trim Elecsnet and the like, and azo-initiators, such as 2,2'-azo-bis(2-methylbutyronitrile) and 2,2'-azo-bis(isobutyronitrile), known in the field.

The molecular weight of the polymers can be varied by the ratio of monomer to initiator and through agents, chain transfer. Examples of suitable agents, chain transfer include n-artilleryman, n-dodecylmercaptan, tert-dodecylmercaptan, mercaptoethanol, mercaptopropionic acid, thioglycol.

Modern methods of polymerization, such as polymerization migration group (GTP-polymerization, the radical polymerization atom transfer (ATRP-polymerization and polymerization transfer chain with reversible addition-fragmentation (RAFT-polymerization), can also be used to obtain a polyacrylate polyol.

Composition for coating according to the present invention contains a polyester polyol obtained by the esterification of constituent units having a functional group forming the ester, where at least 30 wt.% the constituent parts have a linear or branched ALK(EN)ilen or ALK(EN)renovia group with at least 4 carbon atoms per functional group forming the ester, preferably at least 5, more preferably at least 6 carbon atoms per functional group forming a complex EPE is, where the polyester polyol has a hydroxyl number above 280 mg KOH/g and a hydroxyl functionality (number of hydroxyl groups per molecule)of at least 2. As indicated above mentioned ALK(EN)ilen or ALK(EN)renovia group with at least 4 carbon atoms per functional group forming the ester should be linear or branched. Cyclic ALK(EN)ilen or ALK(EN)renovia groups do not provide the above advantages.

The polyester polyol can be obtained by known methods, namely by polycondensation and/or polyprionidae constituent units having a functional group forming the ester. Examples of functional groups which form an ester, groups are carboxylic acid groups (cyclic) anhydrides of carboxylic acids, the group of esters of carboxylic acids, hydroxy-group, epoxy group, oxetane group and lactonase group. In order to obtain the polyester, at least part of the used blocks must have the number of functional groups of at least 2. However, it can also be used mono-functionalityand and three-functionalityand or more functionalityand component parts.

It is important that at least 30 wt.% polyester constituent parts had linear or times twinnie ALK(EN)ilen or ALK(EN)renovia group, at least 4, preferably at least 5, carbon atoms per functional group forming the ester.

Examples of suitable polyester constituent links are monocarboxylic acids having the ALK(EN)ilen or ALK(EN)Elenovo group with at least 4 carbon atoms associated with the group of carboxylic acids, such as pentane acid, hexanoic acid, heptane acid, octanoic acid, isooctane acid, novanova acid, isononanoic acid, cekanova acid or their isomers, such as versova acid, higher fatty acid having 12-22 carbon atoms, and mixtures thereof. In particular, there may be mentioned commercially available mixture of fatty acids having 8 and 10 carbon atoms. This mixture is available in the company Cognis under the trade name Edenor V85.

Also suitable are dicarboxylic acids such as sabotinova acid, dodecandioic acid, actinistia acid, dodecanesian acid (any isomer or mixture of isomers), and dimeric fatty acids. Examples of anhydrides of carboxylic acids with linear or branched ALK(EN)ilen or ALK(EN)renovia group with at least 4 carbon atoms per functional group forming the ester, anhydride are decanoas acid anhydride dodecanol acids is, anhydride dodecylamino acid and anhydride dodecanesian acid.

Can also be used hydroxycarbonate acids and their derivatives, lactones, such as gamma decanolactone, provided that they have a linear or branched ALK(EN)ilen or ALK(EN)renovia group with at least 4 carbon atoms per functional group forming the ester. It should be noted that hydroxycarbonate acid and derivatives, lactones have 2 functional group forming the ester.

Examples of suitable monohydroxy alcohols are butanol, pentanol, hexanol, heptanol and octanol. It is also possible to use monohydroxy alcohols with longer chain, where ALK(EN)ilen or ALK(EN)Elenovo group derived from fatty acids, i.e. fatty alcohols. Suitable diols include 2-butyl-2-ethyl-1,3-propandiol, 2,2,4-trimethyl-1,3-pentanediol, 1,8-octanediol, 1,10-decandiol and their isomers.

Epoxy group capable of forming two ester groups. Therefore, epoxide-functionalized component of the link requires a linear or branched ALK(EN)ilen or ALK(EN)renovia group with at least 8 carbon atoms. Their examples are epoxydecane olefins, glycidyloxy ethers of fatty alcohols and glycidyloxy esters of fatty acids. In particular, what may be referred to glycidyloxy ester versatool acid.

In addition to the constituent parts described above, having a linear or branched ALK(EN)ilen or ALK(EN)renovia group with at least 4 carbon atoms per functional group forming the ester, to obtain a polyester polyol can be used by other component parts forming the ester, provided that they are used in quantities of less than 70 wt.%, in the calculation of the total mass of the constituent parts.

Examples of cycloaliphatic polyols include 1,4-cyclohexanedimethanol, 1,4-cyclohexanediol, 2,2-bis(4-hydroxycyclohexyl)propane, bis-hydroxyethylcellulose and mixtures thereof. Examples of aliphatic polyols include glycerol, 1,2-propandiol, 1,3-propandiol, 2-methyl-1,3-propandiol, neopentylglycol, 1,6-hexanediol, trimethylacetyl, trimethylolpropane, 1,2,6-hexanetriol, pentaerythritol, ditrimethylol, propoxycarbonyl pentaerythritol, ethoxylated of trimethylolpropane, dimethylolpropionic acid and mixtures thereof.

Preferred diols include 1,2-ethanediol, 1,2-propandiol, 1,3-propandiol, 3-methyl-1,3-propandiol, 2-butyl-2-ethyl-1,3-propandiol, dimethylolpropionic acid and 1,4-cyclohexanedimethanol.

Suitable cyclic polycarboxylic acid include aromatic polycarboxylic acids and cycloaliphatic polycarboxylic acids. Examples of aromatic polycarb the OIC acids include isophthalic acid, phthalic acid, trimellitic acid and mixtures thereof. Also included are their esters or anhydrides, such as phthalic anhydride, trimellitic anhydride and mixtures thereof. Examples of cycloaliphatic polycarboxylic acids include 1,2-cyclohexanecarbonyl acid, 1,3-cyclohexanecarbonyl acid, tetrahydrophthalic acid, andmathematical acid, hexahydrophthalic acid, methylhexahydrophthalic acid and mixtures thereof. Also included are their esters or anhydrides, such as tetrahydrophthalic anhydride, incomeinequality anhydride, hexahydrophthalic anhydride, methylhexahydrophthalic anhydride and mixtures thereof.

Examples of acyclic polycarboxylic acids include malonic acid, succinic acid, glutaric acid, adipic acid, azelaic acid and mixtures thereof. Also included are their esters and anhydrides, such as dimethyl ester and diethyl ester of malonic acid, succinic anhydride and mixtures thereof.

As mentioned above, the hydroxyl number of the polyester polyol is above 280 mg KOH/g and a hydroxyl functionality is at least 2. In order to obtain the desired hydroxyl and hydroxyl functionality, upon receipt of a polyester polyol suitable way PR is changing an excess of hydroxy-functionalized components parts. Is also preferred, when the polyester polyol is a branched or dendrimer polyester. Branching produced by the constituent units having 3 or more functional groups, forming ester molecule.

The upper limit of the hydroxyl number is 380 mg KOH/g, preferably 350 mg KOH/g, Preferably, a hydroxyl functionality in the range from 2 to 4, more preferably from 2 to 3.5.

Acid number of the polyester polyol is not particularly critical, but generally is less than 25 mg KOH/g Typical acid number of the polyester polyol is less than 15 mg KOH/g

In order to obtain a low content of volatile organic solvent in the composition for coating with a viscosity of coating, polyester polyol has srednekamennogo molecular weight Mn of less than 4000, preferably less than 2000, more preferably less than 1600, most preferably from 500 to 1200. The polydispersity (Mw/Mn) of the polyester polyol has a value of less than 2.5, preferably less than 2 and more preferably less than 1.7.

Not wishing to be bound by any theory, I believe that the individual monomers include linear or branched ALK(EN)ilen or ALK(EN)renovia group having at least 4 carbon atoms, polyacrylate p is liole in combination with polyester components links, having a linear or branched ALK(EN)ilen or ALK(EN)renovia group with at least 4 carbon atoms per functional group forming the ester, to provide a composition for coating having a surface tension in a particular range. Also believe that a special range of surface tension leads to reduced susceptibility compositions for coatings according to the present invention to the formation of micro-holes/pores in the dried coating.

Suitable isocyanate-functionalityand cross-linking agents for use in compositions for coating are isocyanate-functionalityand compounds containing at least two isocyanate groups. Preferably, the isocyanate-functionalized crosslinking agent is a polyisocyanate, such as aliphatic, cycloaliphatic or aromatic di-, tri - or Tetra-isocyanates. Examples of diisocyanates include 1,2-propylenediene, trimethylindolenine, tetramethyldisilane, 2,3-butylenediamine, hexamethylenediisocyanate, octamethyltrisiloxane, 2,2,4-trimethylhexamethylenediamine, dodecyltrimethoxysilane, ω,ω'-dipropionyl the ether diisocyanate, 1,3-cyclopentadiene, 1,2-cyclohexanedimethanol, 1,4-cyclohexanediethanol, isophorondiisocyanate, 4-methyl-1,3-diisocyanato exan, TRANS-vinylidenechloride, dicyclohexylmethane-4,4'-diisocyanate (Desmodur® W), colorvision, 1,3-bis(isocyanatomethyl)benzene, xylylenediisocyanate, α,α,α',α'-tetramethylethylenediamine (TMXDI®), 1,5-dimethyl-2,4-bis(2-isocyanatomethyl)benzene, 1,3,5-triethyl-2,4-bis(isocyanatomethyl)benzene, 4,4'-diisocyanatobutane, 3,3'-dichloro-4,4'-diisocyanatobutane, 3,3'-diphenyl-4,4'-diisocyanatobutane, 3,3'-dimethoxy-4,4'-diisocyanatobutane, 4,4'-diisocyanatobutane, 3,3'-dimethyl-4,4'-diisocyanatobutane and disorientation. Examples of triisocyanate include 1,3,5-triisocyanate, 2,4,6-triisocyanate, 1,8-diisocyanato-4-(isocyanatomethyl)octane and disinclination. Adducts and oligomers of MDI, such as biuret, isocyanurate, the salt allianoi acid (allophanate), uretdione, urethanes and mixtures thereof, are also included. Examples of such oligomers and adducts are the product of the joining of 2 molecules of a diisocyanate, such as hexamethylenediisocyanate or isophorondiisocyanate to dialu, such as ethylene glycol, the product of the joining of 3 molecules of hexamethylenediisocyanate to 1 molecule of water (available under the trade name Desmodur N from Bayer), product fitting 1 molecule of trimethylolpropane to 3 molecules colordistance (available under the trade name Desmodur L from Bayer), product fitting 1 molecules trimet is laplapan to 3 molecules of isophorondiisocyanate, product fitting 1 molecule of pentaerythritol to 4 molecules colordistance, product fitting 3 moles of meta-α,α,α',α'-tetramethyldisilane to 1 pray of trimethylolpropane, which is the trimer of 1,6-diisocyanatohexane, which is a trimer of isophorondiisocyanate, uretdione dimer of 1,6-diisocyanatohexane, biuret 1,6-diisocyanatohexane, allophanate 1,6-diisocyanatohexane and mixtures thereof. Also suitable for (co)polymers of isocyanate-functionalized monomers, such as α,α'-dimethyl-meta-isopropylbenzenesulfonyl.

Composition for coating can be used and applied without a volatile solvent, in particular, when using a binder with a low molecular weight, optionally in combination with one or more reactive solvents. Alternatively, a composition for coating may optionally contain a volatile solvent. Preferably, the composition for coating contains less than 500 g/l volatile organic solvent, based on the entire composition, more preferably less than 480 g/l and most preferably 420 g/l or less. The content of non-volatile substances of the composition, commonly referred to as the solids content, preferably more than 50 wt.%, based on the entire composition, more preferably more than 54 wt.% and most edocfile more than 60 wt.%.

Examples of suitable volatile organic solvents are hydrocarbons, such as toluene, xylene, Solvesso 100, ketones, terpenes such as dipentene, or pine oil, halogenated hydrocarbons such as dichloromethane, ethers such as dimethyl ether of ethylene glycol, esters such as ethyl acetate, ethylpropane, or esters ethers, such as methoxypropylacetate or amoxicilpin. Can also be used mixtures of these compounds.

Preferably, when the solvent contains ALK(EN)ilen or ALK(EN)renovia group having at least 4 carbon atoms. Preferably, at least 60 wt.% volatile solvent, more preferably 80 wt.% and most preferably more than 90 wt.% contain ALK(EN)ilen or ALK(EN)renovia group having at least 4 carbon atoms. Examples of volatile solvents containing ALK(EN)ilen or ALK(EN)renovia group having at least 4 carbon atoms, are esters, such as n-bodyformat, n-butyl acetate, n-butylphosphonate, n-butylboronic corresponding tert-butyl, sec-butyl and isobutyl esters, esters of linear or branched pentanol, hexanol or octanol, such as 2-ethylhexanol, ketones, such as methylmercaptan or methylisobutylketone, Alif the political hydrocarbons, having more than 4 carbon atoms, aromatic hydrocarbons having substituents containing ALK(EN)ilen or ALK(EN)renovia group having at least 4 carbon atoms, ethers, such as disutility ether, daintily ether, dioctyloxy ether, and alcohols, such as linear or branched butanol, pentanol, hexanol and octanol. Alcohols are less preferred as volatile solvents due to their reactivity towards isocyanate-functionalized cross-linking agents.

If so desirable, it is possible to include in the composition for coating one or more so-called "free from atmospheric photochemical reactions solvents. Free from atmospheric photochemical reactions, the solvent is a volatile organic compound that does not participate in photochemical reactions in the atmosphere to form smog. It can be an organic solvent, but it needs so much time to interact with nitrogen oxides in the presence of sunlight, the Agency for environmental protection of the United States of America considers its reactivity is negligible. Examples of free from atmospheric photochemical reactions solvents that are approved to use the education in paints and coatings, include acetone, methyl acetate, parachlorobenzotrifluoride (commercially available under the name Oxsol 100) and volatile methylsiloxane. Also tertiary butyl acetate is considered as free from atmospheric photochemical reactions the solvent.

In addition to the components described above, the composition for coating in accordance with the present invention may be present other compounds. Such compounds can be a main binder and/or reactive solvents, optionally containing a reactive group that can be cross stitched with the above-mentioned hydroxy-functionalized compounds and/or isocyanate-functionalized cross-linking agents. Examples include hydroxy-functionalityand binders, for example, polyester polyols, polyacrylate polyols, polyurethane polyols, acetobutyrate cellulose, hydroxy-functionalityand epoxy resin, alkyd resin and gendarmerie polyols such as described in International patent application WO 93/17060. Can also be hydroxy-functionalityand oligomers and monomers, such as castor oil, trimethylolpropane and diols. Especially may be mentioned are branched diols such as described in International patent application WO 98/053013, for example, butylated-1,3-propandiol. Composition for coating may also contain latent hydroxy-functionalityand compounds such as compounds containing bicyclic ortho-ester, Spiro-ortho-ester or Spiro-ortho-silicate group. Such compounds and their use are described in International patent applications WO 97/31073 and WO 2004/031256.

Finally, there may be ketonic resins, esters of aspartic acid and latent or Placentia amino-functionalityand compounds such as oxazolidine, catimini, aldimine, diimine, secondary amines and polyamine. These and other compounds known to the expert and referred, inter alia, in the patent US 5214086.

Composition for coating may optionally contain other ingredients, additives or excipients commonly used in compositions for coating, such as pigments, dyes, surfactants, auxiliary means on the basis of dispersions of pigments, leveling tools, wetting agents, substances that prevent the occurrence of rabini, protivovspenivayushchie additives, means to prevent the formation of flow of a substance that improves the heat resistance, substances that improve the light fastness, UV absorbers, antioxidants and fillers.

In a preferred embodiment, the composition for coating is in accordance with the present invention also contains a curing catalyst to catalyze the curing reaction between the hydroxyl groups and isocyanate groups. Such catalysts are known to the specialist. The catalyst is usually used in an amount of from 0 to 10 wt.%, preferably from 0.001 to 5 wt.%, more preferably in quantities of from 0.01 to 1 wt.%, in the calculation of the non-volatile substance compositions for coating. Suitable catalysts include basic catalysts such as tertiary amines and catalysts based on metals. Suitable metals include zinc, cobalt, manganese, zirconium, bismuth and tin. Preferably, when the composition for coating contains a catalyst based on tin. Well-known examples of catalysts based on tin are dilaurate dimethylurea, diversitat dimethylurea, dioleate dimethylurea, dilaurate dibutylamine, dilaurate dactylology and octant tin.

Is also preferred when the composition for coating additionally contains an additive that improves the viability (of the composition). Supplements that increase vitality, increase the viability of a composition for coating, i.e. the time between the mixing of all components and when the viscosity becomes too large for the application of the composition. Additives that improve resilience, may be present in amounts similar to the amounts of curing agent mentioned above. Preferred additives that improve resilience, have only og antennae or a non-negative effect on the drying rate of the composition for coating. Thus, such additives that increase vitality, improve the relationship between viability and rate of drying. Examples of suitable additives that improve resilience, are compounds containing the group of carboxylic acids such as acetic acid, propionic acid or pentane acid. Compounds containing the group of aromatic carboxylic acids are preferred, in particular benzoic acid.

Other suitable additives that improve resilience, are dicarbonitrile compounds such as 2,4-pentandiol, phenolic compounds, tertiary alcohols such as tertiary butanol, tertiary amyl alcohol, and compounds containing Tilney group.

Also possible to use a combination of the above additives that improve resilience, such as the combination of compounds containing the group of aromatic carboxylic acids, and compounds containing Tilney group.

The mass ratio of the polyacrylate polyol to polyester polyol in the composition for coatings based on non-volatile matter ranges from 95:5 to 40:60, preferably from 90:10 to 50:50, more preferably from 80:20 to 60:40.

In the composition for coating in accordance with the invention, the ratio of equivalents of isocyanate-functional g is UPP to groups reactive in relation to isocyanate groups, usually the hydroxy groups is preferably from 0.5 to 4.0, more preferably from 0.7 to 2.5 and most preferably from 0.8 to 1.2. Typically, the mass ratio of the hydroxy-functionalized binders to isocyanate-functionalized cross-linking agent in the composition for coating, based on the content of non-volatile substances, is from 85:15 to 55:45, preferably from 75:25 to 65:35. Particularly preferably, when the composition for coating contains at least 30 wt.% isocyanate-functionalized cross-linking agent, based on the nonvolatile matter of the composition for cover.

As usually, with regard to compositions for coatings containing hydroxy-functionalized binder and the isocyanate-functionalized crosslinking agent, the composition in accordance with the invention has limited viability. Hence, an appropriate image composition provide as multi-component composition, for example, as a two-component composition or as a three-component composition. Therefore, the invention also relates to a kit of parts for obtaining a composition for coating, including

(i) component-binder containing polyacrylate polyol obtained by polymerization of unsaturated olefinic monomers,where, at least 40 wt.% monomers include linear or branched ALK(EN)ilen or ALK(EN)renovia group having at least 4 carbon atoms, and polyether polyol obtained by the esterification of constituent units having a functional group forming the ester, where at least 30 wt.% the components of the links contain linear or branched ALK(EN)ilen or ALK(EN)renovia group with at least 4 carbon atoms per functional group forming the ester, where the polyester polyol has a hydroxyl number above 280 mg KOH/g and a hydroxyl functionality of at least 2, and

ii) component, a crosslinking agent comprising isocyanate-functionalized crosslinking agent.

In a preferred embodiment, component-binder additionally contains a curing catalyst described above. If the composition for coating also contains an additive that increases the viability of, preferably, when the additive that increases vitality, is included in the component-binding or optional component is a reducing agent.

Optional volatile solvent may be included in either component or both components of the kit parts. Alternatively, it is possible to provide the third component is a reducing agent containing volatile p is storytell. Alternatively, if you use component-reducing agent, any of the two additives or both additives: curing catalyst and an additive that increases vitality, can be included in component-reducing agent.

Composition for coating of the invention can be prepared by mixing the components of the kit parts.

Coating composition for coating on a substrate can be performed by any method known to the expert, for example, by rolling, spraying, through the brush, through irrigation, immersion, and through the roller. Preferably, the composition for coating, such as described, is applied by spraying.

Composition for coating of the present invention can be applied to any substrate. The substrate may consist, for example, metal, such as iron, steel and aluminum, plastic, wood, glass, synthetic material, paper, leather or other coating layer. Another layer of the coating may consist of a composition for coating of the present invention, or it may be a different composition for coating. Composition for coating of the present invention demonstrate the particular effectiveness as transparent coatings, primers, color/colored top coats, primers and fillers. When the composition for coating of the claimed invention to provide which enables a transparent coating, it is preferably applied on top of paint and/or primer, giving the effect. In this case, the transparent layer forms the top layer of the multilayer coatings, such as are typically applied on the outer surface of the car. The primer can be a primer water-based or primer solvent-based.

Compositions for coatings suitable for coating objects such as bridges, pipelines, industrial plants or buildings, installations for the production/processing of oil and gas or ships. The compositions are particularly suitable for finishing or re-finishing cars and larger vehicles such as trains, trucks, buses, and planes.

Applied composition for coating can be overiden very effectively at a temperature of, for example, 0-60°C., or If the composition for coating can be overiden in the furnace, for example, at a temperature in the range of 60-120°C. Alternatively, the curing can be fixed (far -) infrared radiation. Before curing at elevated temperature applied composition for coating may be optionally subjected to a stage of removal of air.

It should be understood that the term "composition for coating", as used in this document, also VK is uchet its use as an adhesive composition.

EXAMPLES

The initial substance and used abbreviations:

HEMAHydroxyethylmethacrylate
HEAHydroxyethylacrylate
HPMAHydroxypropylmethacrylate, mixture of isomers
BMAButylmethacrylate
BAThe acrylate
IBMAIsobutyronitrile
TBMATert-butylmethacrylate
MMAThe methyl methacrylate
IBOMAIsobornylacrylat
STStyrene
MAA/CE10The reaction product of methacrylic acid and Cardura E10
MAAMethacrylic acid
TMPTrimethylolpropane
HHPAHexahydrophthalic of any the Reid
Edenor V85The linear mixture With8and C10fatty acid from Cognis
Cardura E10Glycidyloxy ester versatool acid, from Hexion Specialty Chemicals
CAPA 3031Trifunctionally polyol of low molecular weight based on TMP and Epsilon-caprolactone, from Solvay
T-BTrigonox B, a radical initiator, based on peroxide, from Akzo Nobel Chemicals
T-CTrigonox C, a radical initiator, based on peroxide, from Akzo Nobel Chemicals
T-42STrigonox 42S, a radical initiator, based on peroxide, from Akzo Nobel Chemicals
Tolonate HDL-LVWhich is the trimer of hexamethylenediisocyanate from Rhodia
Desmodur N 3600Which is the trimer of hexamethylenediisocyanate from Bayer
Vestanat T1890EWhich is the trimer of isophorondiisocyanate from Degussa
BYK 331Silicone additive from BYK Chemie
Tinuvin 1130 UV absorber from Ciba Specialty Chemicals

General methods/methods

The solids content of the compositions is determined by measuring the weight loss after heating the sample up to 125°C for 60 minutes.

Molecular weight determined by chromatography on size of molecules using polystyrene as the standard.

Getting polyacrylate polyols

Polymerization is carried out in an autoclave with heating and cooling device, a stirrer and a metering pump. In an autoclave was placed approximately 50-70 wt.% the total quantity of solvent. The solvent is heated to 160°C and at this temperature by means of the metering pump for 4 hours add a mixture of monomers in a weight ratio indicated in table 1, and 4.6 wt.% the polymerization initiator (initiator 1 in table 1), based on the total weight of the monomers. The pump and tubing are rinsed with solvent (approximately 1-5 wt.% from the total quantity of solvent and the temperature is reduced to 125°C. Add a mixture of solvents (about 2-10 wt.% from the total amount of solvent) and 0.3 wt.% additional initiator (initiator 2 in table 1), based on the total weight of the monomers, and the reaction mixture was kept at 125°C for one additional hour. The polymer is diluted what rastvoritele to the final content of the solids and cooled to room temperature. The solvent is n-butyl acetate, with the exception of comparative example AA, where a mixture of xylene and n-butyl acetate 60:40.

Acid number and hydroxyl number in tables 1 and 2 calculate the content of non-volatile substances of the respective polymers, i.e. without solvent. theoretical glass transition temperature (Tg) point in °C. the solids Content indicated in wt.% polymer solution. The average hydroxyl functionality of the polyol point as f(OH) in tables 1 and 2. Monomeric composition and properties of the polyacrylate polyols used in the examples are summarized in table 1 below.

Table 1
ExampleA1A2A3A4AAABAUADAE
The monomers
HEMA32,632,6-32,6-32,624,832,632,6
HEA--16,8------
HPMA----38,0----
BMA19,0of 21.949,623,19,0of 17.0-15,910,5
TBMA27,344,4- ------
IBMA----16,0----
BA--17,235,2-----
MMA---2,715,04,334,130,435,9
IBOMA-----25,0---
MAA1,11,11,11,41,01,11,11,11,1
ST20,0-15,35,020,020,020,020,020,0
MAA/CE10------20,0--
Initiator 1T-BT-BT-42ST-42S*T-BT-BT-BT-C
Initiator 2T-BT-BT-B T-B*T-BT-BT-BT-B
Properties
Acid number15161412613141212
Hydroxyl number1401408114015014014014 140
Mn112520902665234531801160131515301690
Mw258044706275526082102295282532253660
f(OH)2,84,2the 3.85,88,52,93,3the 3.84,2
Tg7272737572727277
Solids57 6771725558585874
*sample AA from foreign/external provider, the type of initiator is not known

Production of polyester polyols

In a reaction vessel equipped with a stirrer, a heating system, a thermocouple, a Packed column, a refrigerator and a water separator, heated polyester component parts in mass proportions listed in table 2. In addition, as a catalyst add 85%by weight aqueous solution of phosphoric acid in the amount of 1 wt.%, per link. In the atmosphere of inert gas, the temperature was raised gradually to 240°C. the Reaction water is distilled off with such speed that the temperature in the upper part of the column did not exceed 102°C. the Reaction is carried out until, until you have achieved the parameters listed in table 2. Properties of the resulting polyester polyols, free from solvent, is presented in table 2. Commercial trifunctionally polyol of low molecular weight CAPA 3031, based on TMP and Epsilon-caprolactone include in table 2 to compare.

Table 2
Example/components linksE1E2EASEUCAPA 3031
TMP44,048,239,235,040,6the concentration is
HHPAof 17.0-11,77,3--
Succinic acid-18,0--4,4-
Edenor V8539,0to 33.849,2of 57.555,0-
Properties
Acid numberthe concentration isthe concentration is0,91,1the concentration is<1
Hydroxyl number306307270200287561
Mnthe concentration isthe concentration is610500the concentration isthe concentration is
Mwthe concentration isthe concentration is770635the concentration isthe concentration is
f(OH)2,32,82,01,71,8 3
"concentration" means "not defined"

Obtaining compositions for coatings

The first series of compositions for transparent coatings are obtained by mixing the components in the mass proportions shown in table 3. The molar ratio of hydroxyl groups to isocyanate groups in all cases is 1:1. In addition to the components listed in table 3, all compositions for transparent coatings contain the following additives:

1.5 parts by weight of benzoic acid,

0,021-0,030 parts by weight of dilaurate dibutylamine,

0.1 part by weight of BYK 331,

1 part by weight agent, which imparts resistance to light, based on the space-constrained amine, and

to 0.6 part by weight of Tinuvin 1130.

The number of supplements count on the total number of polymer solids of the composition.

Table 3
Example123C1C2C3C4C5C6
Polyacrylate polyolA3 40A4 44A4 36,2A1 69AA 24AB 55AC 44AD 39AE 20
Polyester E1231618,703210182233
Desmodur 360023,4to 25.324,8314435383929,7
VestanatT1890E13,614,720,3--/td> ---the 17.3
Butyl acetate71,571,012,384,084,282,882,182,471,5
MIAK22-222222
Available from atmospheric photochemical reactions solvents1)--63,2------
VOC (g/l)420420419420420420420 420420
VOC (g/l), free from atmospheric photochemical reactions2)234
Viscosity (bowl DIN)161616161616161616
1) Free from atmospheric photochemical reactions solvents are solvents that do not take into account when calculating the VOC content (volatile organic compounds) under the laws of the United States. Free from atmospheric photochemical reactions, the solvent of example 3 consists of a mixture of 14.4 g of 2-ethylhexylacrylate, of 13.7 g of 2-methoxypropylacetate, 16,1 g parachlorobenzotrifluoride and 18.1 g of acetone.
2) the VOC Value for example 3 additionally calculated without taking into account free from atmospheric photochemical reactions solvents as Les is ucih organic compounds.

Compositions for transparent coatings applied by spraying by means of a robot carrying out the coating on the metal panels, which were pre-coated with a primer layer. A clear coating is applied with a gradient thickness layer. After a period of time, remove air samples dried for 55 minutes in a drying Cabinet at 60°C and then leave to fully cure at room temperature. After drying, the size of perforations/pores of the samples was calculated from the square of 4 cm2clean the coating layer thickness of 80 μm. In order to make a judgment about the appearance, visually determine the retention of enamel (Enamel Hold Out = EHO). Take into account the following aspects: gloss, the formation of folds, spreading and transparency of the appearance/clarity. These aspects are combined into one score on a scale from 1 to 10 (1 = very bad appearance, 10 = excellent appearance).

Table 4
the characteristics of the coatings
Example123C1C2C3C4 C5C6
Holes/pores070284242502819
EHO6,5766,5666,566,5

The first number of samples of examples 1-3 according to the invention and the samples of comparative examples C1-C6 demonstrate the influence of the Monomeric compositions of polyacrylate polyol. All the samples of the comparative examples where the polyacrylate polyol contains less than 40 wt.% monomers include linear or branched ALK(EN)ilen or ALK(EN)renovia group having at least 4 carbon atoms, result in coatings having unacceptably large number of perforations/pores. The samples of examples 1-3 according to the invention show a considerably smaller number of perforations/pores where they exist at all. Other properties of transparent coatings on is displayed at the same level. The sample of example 3 demonstrates that the effect of the invention is also present in the case, when using the so-called free from atmospheric photochemical reactions solvents.

The second series of compositions for transparent coatings are obtained by mixing the components in the mass proportions shown in table 5. The molar ratio of hydroxyl groups to isocyanate groups in all cases is 1:1. In all cases, the VOC content is 420 g/L. In addition to the components indicated in table 5, all compositions for transparent coatings contain the following additives:

1.5 parts by weight of benzoic acid,

a 0.035 part by weight of dilaurate dibutylamine,

0.1 part by weight of BYK 331,

1 part by weight agent, which imparts resistance to light, based on the space-constrained amine and

to 0.6 part by weight of Tinuvin 1130.

The number of supplements count on the total number of polymer solids of the composition.

Table 5
Example45C7C8C9C10
Polyacrylate polyol A245,044,043,841,844,449,7
Polyester polyolE1E2EAEBECCAPA
20,620,622,826,421,73031
12,4
Tolonate HDT-LV34,434,4the 33.431,933,9of 37.9
Additional solvent34,434,434,133,934,134,5
Viscosity (bowl DIN)16,616,114,914,114,5the 15.6

Compositions for transparent coatings from table 5 is applied and dried as described above. To determine the length of the influx in the panels make the punched holes. Measure the length of the influx transparent cover under a perforated hole with a layer thickness of 80 μm on a vertically dried panel. The hardness of Perozo (Persoz hardness) is determined 2 hours after curing, after 1 day and after 3 days. The results indicate in seconds. Stickiness in a hot state determined manually by pressing your finger on the heated surface of the coating after curing at 60°C. the Results are presented on a scale from 1 to 10 (1 = very sticky floor, 10 = non-stick coating).

Table 6
the characteristics of the coatings
Example45C7C8C9C10
Holes/pores 2421027
The hardness of Perozo (2 h)382926252337
The hardness of Perozo (1 day)735757525170
The hardness of Perozo (3 days)735657515169
The stickiness in the heated state776568
Rush331111752411

The second number of samples ol the examples 4 and 5 in accordance with the invention and the samples of comparative examples C7-C10 demonstrate the influence of the component parts and the properties of the polyester polyol. The samples of examples 4 and 5 in accordance with the invention show good performance in all aspects. In comparative example C7 use of a polyester polyol with a hydroxyl number of 270 mg KOH/g, i.e. slightly below the value required in accordance with the invention. This results in unacceptably low initial hardness Perozo (Persoz hardness) and sticky surface after initial curing. Such disadvantages become even stronger in the sample of comparative example C8, where the use of a polyester polyol having a lower hydroxyl number and hydroxyl functionality less than 2. In addition, the tendency to the formation of an influx in the sample of comparative example C8 is invalid. Also in the case when the hydroxyl number is above 280 mg KOH/g, and a hydroxyl functionality in the polyester polyol has a value below 2, the same as in comparative example C9, the initial and final values of the hardness of Perozo are too low. In that case, when using a polyester polyol that does not meet the requirement of at least 30 wt.% constituent units having a linear or branched ALK(EN)ilen or ALK(EN)renovia group with at least 4 carbon atoms per functional group forming the ester, at an unacceptable level at ditsa education of perforations/pores. Such a conclusion can be made on the basis of the comparative example C10.

1. Composition for coating, including
and) polyacrylate polyol obtained by polymerization of unsaturated olefinic monomers, where at least 40 wt.% monomers include linear or branched ALK(EN)ilen or ALK(EN)renovia group having at least 4 carbon atoms;
(b) a polyester polyol obtained by the esterification of constituent units having a functional group forming the ester, where at least 30 wt.% the component parts include linear or branched ALK(EN)ilen or ALK(EN)renovia group with at least 4 carbon atoms per functional group forming the ester, where the polyester polyol has a hydroxyl number above 280 mg KOH/g and a hydroxyl functionality of at least 2, and
c) isocyanate-functionalized crosslinking agent.

2. Composition for coating according to claim 1, characterized in that the composition is a composition for a transparent coating.

3. Composition for coating according to any one of the preceding claims, characterized in that the composition additionally contains a curing catalyst.

4. Composition for coating according to claim 3, characterized in that the curing catalyst is a catalyst based on metal

5. Composition for coating according to claim 3, characterized in that the composition additionally includes at least one agent that increases the viability of composition.

6. Composition for coating according to claim 5, wherein the agent that increases the viability of the composition, selected from carboxylic acids.

7. Set of parts for the preparation of a composition for coating according to claims 1 to 6, including
(i) component-binder containing polyacrylate polyol obtained by polymerization of unsaturated olefinic monomers, where at least 40 wt.% monomers include linear or branched ALK(EN)ilen or ALK(EN)renovia group having at least 4 carbon atoms, and polyether polyol obtained by the esterification of constituent units having a functional group forming the ester, where at least 30 wt.% the components of the links contain linear or branched ALK(EN)ilen or ALK(EN)renovia group with at least 4 carbon atoms per functional group forming the ester, where the polyester polyol has a hydroxyl number above 280 mg KOH/g and a hydroxyl functionality of at least 2; and
ii) component, a crosslinking agent comprising isocyanate-functionalized crosslinking agent.

8. The set of parts according to claim 7, characterized in that the component-binder optionally with whom holds a curing catalyst.

9. The set of parts according to claim 7 or 8, characterized in that the component-binder additionally contains an additive that increases the viability of composition.

10. The set of parts according to claim 7, characterized in that the set of parts further comprises a component-reducing agent comprising a volatile solvent.

11. The set of parts of claim 10, wherein the component is a reducing agent further comprises a curing catalyst and an agent that increases the viability of composition.

12. The method of applying a composition for coating on a substrate, characterized in that the use of the composition for coating according to claims 1-6.

13. The method according to item 12, characterized in that the composition for coating is applied as a top coating in a multi-layer lacquer coating.

14. The method according to item 12, wherein the substrate is a car or large vehicle.

15. The method according to item 12, characterized in that it is used in the final processing or re-end processing of cars or larger vehicles.



 

Same patents:

FIELD: chemistry.

SUBSTANCE: composition includes a polymer mixture which contains a) an aqueous dispersion of at least one polysiloxane and b) an aqueous dispersion of at least one polyurethane, in which content of the said at least one polysiloxane polymer varies from approximately 50 to 85 wt %, and content of the said at least one polyurethane varies from approximately 15 to 50 wt %, in terms of total weight of solid substances of the said at least one polysiloxane polymer and the said at least one polyurethane and c) polyolefin powder with ultrahigh molecular weight in amount of approximately 5-35 pts. wt per 100 total parts by weight of the said at least one or more polysiloxanes and the said one or more polyurethanes. The said polyurethane is obtained from at least one aliphatic or cycloaliphatic diisocyanate and at least one hydroxyl ending intermediate compound such as polycarbonate, polyester or polyether or combination thereof, and is heat-curable. The said aqueous dispersion contains approximately 7 wt % or less of an organic solvent in terms of total weight of the said dispersion composition, and the said polymer mixture contains from approximately less than 10 to 0 parts by weight of a substance for increasing adhesiveness per 100 total parts by weight of the said at least one polyurethane and the said at least one polysiloxane; and contains from approximately less than 10 to 0 parts by weight of a halogen-containing polymer per 100 total parts by weight of the said at least one polyurethane and the said at least one polysiloxane. The invention also describes versions of a polymer or rubber substrate and versions of a sealant for vehicles, at least partially coated with the dried composition described above.

EFFECT: low noise level when substrate coated with the said composition moves or is in contact with an article, as well as obtaining a surface with low coefficient of friction which does not increase with time.

17 cl, 14 ex, 10 tbl, 1 dwg

FIELD: chemistry.

SUBSTANCE: polyurethane material contains a first part of crystalline particles, having self-orientation and bonded so as to keep their orientation along a first crystallographic line at least in two directions, a second part of crystalline particles having self-orientation and bonded so as to keep their orientation along a second crystallographic line at least in two directions, wherein the first crystallographic line is different from the second crystallographic line and where the said crystalline particles constitute more than approximately 30% of the total volume of the polyurethane material, and where the polyurethane contains a product of reaction of components comprising: (a) approximately 1 equivalent of 4,4'-methylene-bis(cyclohexylisocyanate); (b) approximately 0.3 of a trimethylolpropane equivalent; and (c) approximately 0.7 of a butanediol or pentanediol equivalent, and where the polyurethane material undergoes thermal treatment at temperature ranging from approximately 35°C to approximately 150°C or holding.

EFFECT: production of polyurethane material, products of which are made through casting or reaction injection moulding and have good optical properties, high resistance to impact loads, high impact resistance, high K-ratio, good ballistic stability, good resistance to solvents and good weather resistance.

26 cl, 110 ex, 33 tbl, 26 dwg

FIELD: chemistry.

SUBSTANCE: disclosed is an aqueous polyurethane dispersion which does not contain N-methylpyrrolidone and solvents and contains a product of reaction of a mixture of 1-isocyanate-3,3,5-trimethyl-5-isocyanatemethylcyclohexane and 4,4'-diisocyanatedicyclohexylmethane, one or more polyols with average molecular weight of 500-3000, one or more compounds with at least one OH- or NH- functional group, which contain a carboxyl and/or carboxylate group, where at least 50 mol % acid incorporated in the overall resin consists of dimethylol propionic acid, one or more polyols and/or polyamines with average molecular weight less than 500 and, if necessary, one or more monoalcohols and/or monoamines, as well as preparation method thereof and use thereof as an agent for coatings having good resistance characteristics.

EFFECT: obtaining a polyurethane dispersion which does not contain N-methylpyrrolidone and solvents, and contains a hydrophilization agent in form of dimethylol propionic acid, which can be stored for over 8 weeks and is suitable for making transparent shining coatings with high resistance to dyes.

8 cl, 2 tbl, 8 ex

FIELD: chemistry.

SUBSTANCE: invention relates to aqueous coating compositions with low content of volatile organic compounds. The aqueous coating composition contains water, oxidative-curable resin, at least 1.5% of the weight of the composition of a non-structured alkali-soluble acrylate, having weight-average molecular weight Mw of 200000 g/mol or lower, and acid number of at least 15 mg KOH/g; and an emulsified second acrylate having Mw of at least 300000 g/mol. Content of the alkali-soluble acrylate in the composition is equal to at least 3 wt %. The weight ratio of the alkali-soluble acrylate to the second emulsified acrylate ranges from 1:0.5 to 1:5, and the weight ratio of the alkali-soluble acrylate to the oxidative-curable resin ranges from 1:0.5 to 1:10. The oxidative curable resin is an alkyd resin, alkyd-urethane resin. The second acrylate is cross-linkable, for example azomethine cross-linkable links.

EFFECT: aqueous coating composition has good physical and mechanical properties.

9 cl, 3 ex

FIELD: chemistry.

SUBSTANCE: invention relates to polyurethanes and articles made from said polyurethanes, as well as to laminated material and coating composition containing such polyurethanes. The polyurethane is a product of a reaction between components which contains less than approximately 10 wt % polyesterpolyol and/or polyetherpolyol, where the components are selected from: (a) approximately 1 equivalent of at least one polyisocyanate; (b) approximately 0.05-0.9 equivalent of at least one branched polyol which contains 3-18 carbon atoms and at least 3 hydroxyl groups; and (c) approximately 0.1-0.95 equivalent of at least one diol which contains 2-18 carbon atoms, where during mixing, the reaction components are held at reaction temperature of at least approximately 100°C for at least approximately 10 minutes.

EFFECT: production of polyurethanes, articles of which are made through casting or reaction injection moulding and have good optical properties, high resistance to impact loads, high impact resistance, high K-ratio, good ballistic stability, good resistance to solvents and good weather resistance.

37 cl, 113 ex, 82 tbl, 26 dwg

FIELD: chemistry.

SUBSTANCE: invention relates to a moisture-curable composition for adhesive compounds, sealing compounds, coatings or linings, application thereof as an adhesive, sealing compound or coating, a cured composition obtained by reacting water with such a composition, methods of gluing bases and sealing using said composition, as well as adhesive and sealed articles made using said methods, respectively. The moisture-curable composition contains (i) at least one isocyanate-containing polyurethane polymer P, which is obtained from at least one polyisocyanate and at least one polyol, and (ii) at least one aldimine-containing compound of formula (I): .

EFFECT: preparation of compounds which are stable during storage, can be quickly moisture-cured without bubbles, do not cause smells during curing and are suitable for use as precursors of synthetic materials.

25 cl, 34 ex, 10 tbl

FIELD: medicine, pharmaceutics.

SUBSTANCE: invention relates to coating composition, applied, for instance, as transparent coatings, base coatings, pigmented coating layers, used, prime coatings, etc. Composition contains polyisocyanate, polyol, metal-based catalyst for carrying out reaction of addition reaction between isocyanate groups and hydroxyl groups, thiol-functioning compound and carboxylic acid, carbonyl group of carboxylic acid being in connection with π-electronic system.

EFFECT: creation of novel coating composition, demonstrating presence of favourable property balance, namely, low level of volatile organic solvent content with operation viscosity, high rate of hardening and long viability, which results in obtaining coatings, which demonstrate good outlook characteristics, in particular, low liability to formation of pinholes, and good hardness.

14 cl, 2 tbl

FIELD: construction.

SUBSTANCE: composition for coats contains isocyanate prepolymer produced by interaction of 4,4'-diphenylmethanediisocyanate and oligodiendiol with molecular weight of 2800-3200, content of hydroxyl groups 0.88-1.3% at the ratio of isolcyanate and hydroxyl groups of 4:1 with content of isocyanate groups in prepolymer of 8.0-9.7%, wt parts - 15-70, base - rubber composition from low-molecular hydroxyl-containing rubber, plasticiser, filler, anti-ageing agent and pigment - 100, catalyst of urethane production - 0.05-0.15 and glycerin 0.7-3.0.

EFFECT: higher strength, hardness and relative extension of coats.

2 tbl

FIELD: chemistry.

SUBSTANCE: woven belt is a coated belt made by depositing a urethane-based composition onto the surface of the said belt, where the said composition contains nanoparticles of filler selected from a group consisting of nanoparticles of clay, soot, silicon carbide, metal oxides and combinations of said nanoparticles. Content of nanoparticles of filler in the coating ranges from 0.01 to 10 wt %.

EFFECT: obtained belt increases resistance to bending fatigue, resistance to development of cracks, resistance to joining of grooves and wear resistance of urethane coatings of belts and shafts, increases water resistance and oil resistance of belts and shafts with urethane coating.

18 cl, 2 ex, 4 tbl, 6 dwg

FIELD: chemistry.

SUBSTANCE: invention relates to a water-soluble coating composition containing a) polyol, b) polyisocyanate cross-linking agent and c) a compound with a thiol functional group in which molar ratio of isocyanate groups to thiol groups lies between 1:0.0001 and 1:0.4. The invention also relates to use of the coating composition as a transparent or pigmented external coating, basic coating, filler, prime coating or binding material, in painting or repainting automobiles and large vehicles, and to a set for preparing the coating composition.

EFFECT: obtaining a composition which provides a balance between high rate of solidification, long life and good appearance of the coating film made from the said composition.

17 cl, 3 dwg, 7 tbl

FIELD: medicine, pharmaceutics.

SUBSTANCE: invention relates to coating composition, applied, for instance, as transparent coatings, base coatings, pigmented coating layers, used, prime coatings, etc. Composition contains polyisocyanate, polyol, metal-based catalyst for carrying out reaction of addition reaction between isocyanate groups and hydroxyl groups, thiol-functioning compound and carboxylic acid, carbonyl group of carboxylic acid being in connection with π-electronic system.

EFFECT: creation of novel coating composition, demonstrating presence of favourable property balance, namely, low level of volatile organic solvent content with operation viscosity, high rate of hardening and long viability, which results in obtaining coatings, which demonstrate good outlook characteristics, in particular, low liability to formation of pinholes, and good hardness.

14 cl, 2 tbl

FIELD: chemistry.

SUBSTANCE: polyisocyanate contains biuret groups, has functionality on isocyanate groups of not less than 4 and not more than 10 and is obtained using a method which includes (A) reaction of a polyisocyanate adduct with a secondary monoamine of formula (R1)(R2)NH, with the ratio of the isocyanate equivalent to the amine equivalent ranging from approximately 4:1 to approximately 14:1 to introduce biuret groups into said polyisocyanate, and (B) reaction of the polyisocyanate containing biuret groups with a blocking reagent. The polyisocyanate adduct (a) is obtained from 1,6-hexamethylenediisocyanate, (b) has average functionality on isocyanate groups of not less than 2.5 and not more than 8, and (c) contains isocyanurate groups. The blocking reagent is selected from a group comprising phenol, cresol, amides, oximes, hydrazones, pyrazoles and phenols which are substituted with long aliphatic chains.

EFFECT: obtaining blocked polyisocyanates which combine relatively low viscosity and low molecular weight with high functionality on isocyanate groups and high reactivity relative to binders used in coatings, as well as which are stable during storage with respect to increase in viscosity and are virtually colourless, which is especially important for systems which form transparent coatings.

9 cl, 6 ex, 5 tbl

FIELD: chemistry.

SUBSTANCE: aqueous polyurethane dispersion composition contains polyurethane with carbodiimide and/or carboxyl groups, and polyurethane dispersion adhesive which contains polyurethane with carbodiimide and/or carboxyl groups. The polyurethanes are polyester-polyurethane elastomers. The aqueous polyurethane dispersion composition and polyurethane dispersion adhesive also contain at least one carbodiimide which contains at least one carbodiimide group. The aqueous polyurethane dispersion composition and polyurethane dispersion adhesive react with each other through a polyaddition reaction when heated to 50°C or higher. A polymeric film having an undercoating is obtained by depositing and drying the single-component aqueous polyurethane dispersion composition on a polymeric film. A composite is obtained by reacting the polymeric film having an undercoating with a substrate on which polyurethane dispersion adhesive is deposited and dried. The composite can be produced industrially and can be especially used in interior finishing, preferably of a component built into a transportation vehicle or can be used in the furniture industry.

EFFECT: high reliability of the composition.

5 cl, 3 tbl

FIELD: chemistry of polymers.

SUBSTANCE: invention relates to aromatic polyurethane polyols used as components of priming compositions. Invention describes the priming composition comprising aromatic polyurethane polyol including product of reaction: (a) at least one diol component among number of α,β-diols, α,γ-diols and their mixtures; (b) at least one triisocyanate; (c) at least one diisocyanate wherein at least one isocyanate is aromatic one, and molecular mass or aromatic polyurethane polyol is 3000 Da, not above, and a cross-linking agent also. Prepared aromatic polyurethane polyol shows viscosity value by Brookfield at the level 8260 centipoises, OH-number 192.6 KOH/g and the dispersity (Mn/Mw) at the level 3.0. Priming compositions prepared by using indicated aromatic polyurethane polyol are useful in finishing large means of transportation, for example, trains, trucks, buses and airplanes, in particular, in vehicle body works. Also, invention relates methods for applying priming compositions on support comprising applying indicated compositions, and to a method for finishing car in repairs comprising applying the indicated priming composition.

EFFECT: improved and valuable properties of composition.

11 cl, 5 tbl, 12 ex

FIELD: chemical industry; methods of production of a thermosetting elastomers.

SUBSTANCE: the invention is pertaining to the field of chemical industry, in particular, to the methods of production of a thermosetting polyurethane elastomer and also to the elastomer produced according to the given method. The invention presents the method of production of the polyurethane elastomer having a total apparent density exceeding 150 kg/m3 and providing for an interaction of polyisocyanate and a reactive to isocyanate composition not necessarily at presence of water, according to which the reaction conduct at an isocyanate index of 85-120. At that the polyisocyanate component is composed of: al) 80-100 mass % of diphenylmethanediisocyanate containing at least 40 mass % of 4.4'- diphenylmethanediisocyanate and-or a derivative of the indicated diphenylmethanediisocyanate, which (the derivative) is a may be a liquid at the temperature of 25°C and has NCO value of no less than 20 mass % and a2) 20 mass % of the other polyisocyanate; the reactive to isocyanate composition b) consists of b1) 80-100 mass % of a simple polyol polyester having an average nominal functionality - 2-8, average reactive equivalent weight of 750-5000, an average molecular mass of 2000-12000, the share of oxyethylene - 60-90 mass % and the share of the primary hydroxyl groups of 70-100 mass % calculated for the total number of the primary and the secondary hydroxyl groups in polyol; b2) a reactive to isocyanate extender of the chain in such a quantity, that the ratio of the rigid block makes less than 0.45; and b3) - 20-0 mass % of one or more of other reactive to isocyanate composition excluding water. At that the amount of the polyol of 61) and the reactive to isocyanate composition 63) is calculated from the total amount of the indicated polyol 61) and the composition 63). The invention presents also description of the thermosetting elastomer produced according to the indicated method.

EFFECT: the invention ensures production of a thermosetting polyurethane elastomer.

10 cl, 2 ex

The invention relates to a light-resistant, elastomeric, polyurethane moulded products

FIELD: medicine, pharmaceutics.

SUBSTANCE: invention relates to coating composition, applied, for instance, as transparent coatings, base coatings, pigmented coating layers, used, prime coatings, etc. Composition contains polyisocyanate, polyol, metal-based catalyst for carrying out reaction of addition reaction between isocyanate groups and hydroxyl groups, thiol-functioning compound and carboxylic acid, carbonyl group of carboxylic acid being in connection with π-electronic system.

EFFECT: creation of novel coating composition, demonstrating presence of favourable property balance, namely, low level of volatile organic solvent content with operation viscosity, high rate of hardening and long viability, which results in obtaining coatings, which demonstrate good outlook characteristics, in particular, low liability to formation of pinholes, and good hardness.

14 cl, 2 tbl

FIELD: chemistry.

SUBSTANCE: invention relates to an amphiphilic polymer composition used in compositions of active substances used for protecting plants from pathogens, phytopathogens or wood destroying fungi, insects etc, or in compositions of additives to food products. The given composition is obtained by reacting (i) at least one hydrophobic polymer P1, which is made from ethylene unsaturated monomers M1, and (ii) at least one hydrophilic polymer P2, which is in form of aliphatic polyethers consisting of at least 50 wt % ethylene oxide groups, with (iii) at least one compound V containing isocyanate groups, which has functionality of 1.5-4.5 relative the isocyanate groups, and is selected from aliphatic, cycloaliphatic and aromatic di- and polyisocyanates, as well as from isocyanurates, allophanates, uretdiones and biurets. Ethylene unsaturated monomers M1 contain: (a1) from 50 to 99 wt % in terms of total amount of monomers M1, monomers M1a of general formula I and a2) from 1 to 50 wt % in terms of total amount of monomers M1, neutral monoethylene unsaturated monomers M1b, which differ from monomers M1a, and are selected from vinylaromatic monomers, C11-C20alkylacrylates and C11-C20alkylmethacrylates.

EFFECT: amphiphilic polymer composition promotes efficient solubilisation and stabilisation of water-insoluble active substances, which leads to increase in stability of such compositions of active substances with respect to demulsification processes during prolonged storage, during addition of an electrolyte and during dilution with water.

25 cl, 9 ex, 2 tbl

The invention relates to the field of rocket technology and concerns a method for obtaining a modifier, which is the basis for unsaturated polyester compounds

The invention relates to rigid polyurethane foams, which regulates the energy that demonstrate a high degree of regulation in energy, and a high degree of recovery form
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