Coating composition, containing polyisocyanate and polyol

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

 

The invention relates to coating compositions containing the polyisocyanate, polyol, catalyst based on metal for the reaction of the connection between isocyanate groups and hydroxyl groups, tifunctional compound and carboxylic acid. The invention also relates to a kit of parts used to obtain coating compositions and to the use of the composition.

Coating composition of the aforementioned type is known from European patent application EP 0454219 A. This document relates to polyurethanes obtained as a result of the catalyzed reaction between polyol and polyisocyanate, and to coating compositions based on data from reaction mixtures. The reaction catalyze using tin and/or bismuth catalyst, which zakompleksovani as a result of the reaction with a molar excess of complexing agents selected from merkaptosoedineny and/or polyphenols. The composition may contain volatile acid. Specifically mentioned formic acid and acetic acid.

While known compositions and it is possible to obtain coatings having acceptable properties, desirable remains an additional improvement of the balance between the rate of curing, the viability and characteristics of the appearance of hardened coatings, in chastnosti cases when high or very high content of non-volatile substances, i.e. low concentrations of volatile organic compounds (VOCS). For example, the use of the lowered amount of the curing agent leads to a reduction in the risk of defects of the surface, due to the presence of trapped solvents and/or gases. However, this leads to longer drying times, as well as to lower the hardness of the coatings with the advent of the risk of stains and/or susceptibility to contamination. Longer drying times are undesirable from the viewpoint of high productivity in the operations for coating. In addition, coating compositions with low VOC content, characterized by high loading of catalyst in order to achieve short-time drying characteristic of stabilizing foam in drying the coating, which leads to the formation of the layer of the dried coating of point sinks. Point shell impair the appearance and durability of the coating layers. Thus, when using the known coating compositions to achieve a very good balance between a high rate of cure, long pot life, low VOC content and good appearance of the cured patricianism.

Accordingly, the invention seeks to propose a coating composition, demonstrating the presence of a favorable balance of properties, i.e. low content of volatile organic solvent at a viscosity, fast curing and long-term viability, resulting in coatings, demonstrating the good quality of appearance, in particular low susceptibility to formation of point sinks, and good hardness. In addition, the coating composition should also lead to hardened coatings, demonstrating the presence of other properties required for the exterior of vehicles, such as flexibility, resistance to scratching, luster, durability and resistance to chemicals and UV radiation.

In the present invention proposes a coating composition comprising a polyisocyanate, a polyol, a catalyst based on metal for the reaction of the connection between isocyanate groups and hydroxyl groups, tifunctional compound and carboxylic acid, in which the carbonyl group of the carboxylic acid is in conjugation with the π-electron system.

Coating composition of the invention demonstrates a favorable balance of properties, i.e. low level containing the Oia volatile organic solvent at a viscosity, high speed curing and long-term viability, resulting in coatings, demonstrating the good quality of appearance, in particular low susceptibility to formation of point sinks, and good hardness. In addition, the coating composition also results in hardened coatings, demonstrating the presence of other properties required for the exterior of vehicles, such as flexibility, resistance to scratching, luster, durability and resistance to chemicals and UV radiation.

Isocyanatobenzene by suturing, are suitable for use in coating compositions, are isocyanatobenzene compounds having at least two isocyanate groups. Preferably isocyanatobenzyl the crosslinker is a polyisocyanate, such as aliphatic, cycloaliphatic or aromatic di-, tri - or tetrazocine. Examples of diisocyanates include 1,2-propylenediene, trimethylindolenine, tetramethyldisilane, 2,3-butylenediamine, hexamethylenediisocyanate, octamethyltrisiloxane, 2,2,4-trimethylhexamethylenediamine, dodecyltrimethoxysilane, ω,ω'-(DIPROPYLENE ether diisocyanate, 1,3-cyclopentadiene, 1,2-cyclohexanedimethanol, 1,4-cyclohexanediethanol, isophorondiisocyanate is t, 4-methyl-1,3-diisocyanatohexane, 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. Also included and adducts and oligomers of MDI, such as biuret, isocyanurate, allophanate, uretdione, urethanes and mixtures thereof. Examples of such oligomers and adducts are the adduct of 2 molecules of a diisocyanate, such as hexamethylenediisocyanate or isophorondiisocyanate, and a diol such as ethylene glycol, the adduct of 3 molecules of hexamethylenediisocyanate and 1 molecule of water (available under the trademark Desmodur N of Bayer), the adduct of 1 molecule of trimethylolpropane and 3 molecules colordistance (available under the trademark Desmodur L of Bayer), the adduct of 1 molecule of trimethylolpropane and 3 molecules of isophorondiisocyanate, the adduct of 1 molecule is of PENTAERYTHRITE and 4 molecules colordistance, adduct of 3 moles of meta-α,α,α',α'-tetramethyldisilane and 1 mol 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 use are (co)polymers isocyanatomethyl monomers, such as α,α'-dimethyl-meta-isopropylbenzenesulfonyl.

Examples suitable for use polyols include compounds having at least two hydroxyl groups. They can be monomers, oligomers, polymers and mixtures thereof. Examples hydroxyquinoline oligomers and monomers are castor oil, trimethylolpropane and diols. In particular, there may be mentioned are branched diols such as described in international patent application WO 98/053013, for example 2-butylether-1,3-propandiol.

Examples suitable for use polymers include polyether polyols based on esters, polyacrylonitrile, polycarbonatediol, poliuretanoviy, millenpolicy and their mixtures and hybrids. In General, these polymers are specialists in the relevant field of technology are known and commercially available. Suitable for use polyether polyols based on esters, polyacrylonitrile and the mixture for example, described in international patent application WO 96/20968 and in European patent application EP 0688840 A. Examples of suitable for use poliuretanovuyu are described in international patent application WO 96/040813.

Additional examples include hydroxyquinoline epoxy resin, Alcide and gendarmerie polyols such as described in international patent application WO 93/17060. Coating composition may also contain compounds with hidden hydroxyquinolinato, such as compounds having groups bicyclic complex orthoevra, complex Spiro-artefiera, Spiro-orthosilicate or bicyclic imidately. These compounds and their use are described in international patent applications WO 97/31073, WO 2004/031256 and WO 2005/035613, respectively.

As mentioned previously, the coating composition of the invention also contains a catalyst based on metal for the reaction of the connection between isocyanate groups and hydroxyl groups. Such catalysts specialists in the relevant field of technology is known. In General, the catalyst is used in amounts in the range from 0.001 to 10% (wt.), preferably from 0.002 to 5% (wt.), more preferably in amounts in the range from 0.01 to 1% (wt.), when calculating the amount of nonvolatile substances in the coating composition. Suitable PlaysForSure metals in the catalyst based on metal include zinc, cobalt, manganese, zirconium, bismuth and tin. Preferably the coating composition 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 octanoate tin.

Suitable for use tifunctional compounds include dodecylmercaptan, mercaptoethanol, 1,3-propanedithiol, 1,6-hexanedithiol, methylthiophenol, 2-mercaptohexanol acid, mercaptoethanol acid and cysteine. Suitable for use are esters derived from tifunctional carboxylic acid and a polyol, such as esters of 2-mercaptoethanol acid, 3-mercaptopropionic acid, 2-mercaptopropionic acid, 11-mercaptoundecanoic acid and mercaptoethanol acid. Examples of such esters include pentaerithrityl(3-mercaptopropionate), pentaerithrityl(2-mercaptoacetate), trimethylolpropane(3-mercaptopropionate), trimethylolpropane(2-mercaptopropionate) and trimethylolpropane(2-mercaptoacetate). An additional example of such connection is hyperbranched polyol as one of the core on the basis of the original polyol, such as trimethylolpropane and dimethylolpropionic acid, which vpol is dctii atrificial 3-mercaptopropionic acid and isononanoic acid. These compounds are described in European patent application EP-A-0 448224 and international patent application WO 93/17060.

To receive tifunctional compounds also leads to the addition products of H2S to amoxilonline connections. These compounds may have the structure, opisyvayuschaya following formula T[(O-CHR-CH2-O)nCH2CHXHCH2YH]mwhile T represents an m-valent organic fragment, R represents hydrogen or methyl, n is an integer in the range from 0 to 10, X and Y represent oxygen or sulfur with the proviso that X and Y are not the same. An example of such a compound is commercially available in the company Cognis under the trademark Capcure® 3/800.

Other options syntheses, leading to the formation of compounds having tifunctional include: the reaction between aryl - or alkylhalogenide and NaHS for the introduction of alkyl and aryl compounds, respectively, side mercaptopropyl; the reaction between the Grignard reagent and grey for introduction into the structure of the side mercaptopropyl; the reaction between polymercaptan and polyolefin in accordance with the mechanisms of nucleophilic reactions, electrophilic reaction or a radical reaction; and the reaction of disulfides.

Preferred tifunctional compounds are pentameric is itterates(3-mercaptopropionate), trimethylolpropane(3-mercaptopropionate) and Capcure 3/800.

In yet another variant implementation of the invention tirinya group can be covalently linked to the resin. Such resins include tifunctional polyurethane resin, resin-based tifunctional polyesters, resins based on tifunctional polymers obtained by polyaddition mechanism, resin-based tifunctional polyethers, tifunctional polyamide resin, tifunctional primocanale resin and mixtures thereof. Tifunctional resin can be obtained by the reaction between the H2S and epoxypropoxy resin containing unsaturated carbon-carbon connection, the reaction between hydroxystanozolol resin and tifunctional acid and the reaction between isocyanatobenzyl polymer and either tifunctional alcohol or di - or primaryprevention.

In General tifunctional compound is present in an amount in the range from 0.001 to 10% (wt.), preferably from 0.002 to 5% (wt.), more preferably in amounts in the range from 0.01 to 2% (wt.), when calculating the amount of nonvolatile substances in the coating composition. The actual number tifunctional connection depends on the type and amount used of the catalyst based on a metal from the mass equivalent is Alanta of the thiol tifunctional connection and from the desired profile of properties of the coating composition. In certain embodiments of best may be the use of tifunctional compound in an amount such that the composition would contain a molar excess tylnej groups in comparison with the number of metal atoms of the catalyst based on metal.

As mentioned previously, the coating composition of the invention contains a carboxylic acid, in which the carbonyl group of the carboxylic acid is in conjugation with the π-electron system. Examples suitable for use carboxylic acids are aromatic carboxylic acids, i.e. carboxylic acid in which the carboxylic acid group linked to the aromatic ring single covalent bond. In this case, the carbonyl group of the carboxylic acid is in conjugation with the aromatic π-electron system. Aromatic carboxylic acid can be a monocarboxylic acid or polycarboxylic acid. Suitable for use examples include phthalic acid, alkyl and/or alkoxy-substituted phthalic acid, complex palefire phthalic anhydride, complex palefire alkyl and/or alkoxy-substituted phthalic anhydride, benzoic acid, alkyl and/or alkoxy-substituted benzoic acid and mixtures of such aromatic mono - and polycarboxylic acids. Preferred aromatic carbon is howling acid is benzoic acid.

In yet another variant implementation of the carboxylic acid is an alpha-beta unsaturated carboxylic acid. In this case, the carbonyl group of the carboxylic acid is in conjugation with the π-electron system of the carbon-carbon double or triple bond. Examples of suitable alpha-beta-unsaturated carboxylic acids are acrylic acid, methacrylic acid, taconova acid, Tarakanova acid, crotonic acid, fumaric acid, sorbic acid, cinnamic acid and maleic acid. Suitable for use are also difficult palefire fumaric and maleic acids, such as monometallic, monoethylether or appropriate fumarate.

In one embodiment, the implementation of the carboxylic acid, in which the carbonyl group of the carboxylic acid is in conjugation with the π-electron system can be attached to the main polymer chain, as in the case of carboxylic acid groups present in the complex polyesters due to incomplete conversion during reception of complex polyester. In the case of bonding a carboxylic acid group with the main chain of a polymer with high molecular weight best action carboxylic acid becomes less pronounced, possibly due to the presence of steric hindrance. Therefore, in the case of connected is inane acid to the main chain of the polymer is preferred, to srednekislye molecular weight polymer would reach up to 1000 or up to 800. In an appropriate case, the carboxylic acid is present in polimernoi form.

In the General case, carboxylic acid, in which the carbonyl group of the carboxylic acid is in conjugation with the π-electron system, there is increased mass fraction in comparison with the quantities of catalyst based on metal or tifunctional connection. The actual number of carboxylic acids depends on the type and amount used of the catalyst based on metal, the type and quantity tifunctional connection, the type and molecular weight of concrete used carboxylic acids and from the desired profile of properties of the coating composition. Examples suitable for use quantities of carboxylic acids are ranges from 0.1 to 18% (wt.), or from 0.2 to 10% (wt.), or from 0.5 to 5% (wt.), when calculating the amount of nonvolatile substances in the coating composition.

In an appropriate case, the coating compositions corresponding to the invention, the ratio of equivalents between isocyanatobenzene groups and hydroxyl groups is in the range from 0.5 to 4.0, preferably from 0.7 to 3.0, and more preferably from 0.8 to 2.5. In the General case, the mass ratio between hydroxyquinoline wazowski and isocyanatobenzyl a staple in coating compositions when calculating the level of content of non-volatile substances is in the range from 85:15 to 15:85, preferably from 70:30 to 30:70.

Coating composition can be used and applied without volatile diluent, in particular in the case of using a low molecular weight binder, optionally in combination with one or more reactive diluents. Alternatively, the coating composition optionally may contain volatile organic solvent. Preferably the coating composition contains less than 500 g/l volatile organic solvent, when calculating the number of the total composition, more preferably less than 480 g/l, and most preferably 420 g/l or less. The content of nonvolatile substances in the composition, usually referred to as levels of solids, preferably greater than 50% (wt.), when calculating the number of the total composition, more preferably greater than 54% (wt.), and most preferably greater than 60% (wt.).

Examples suitable for use volatile organic solvents are hydrocarbons, such as toluene, xylene, Solvesso 100, ketones, terpenes such as dipentene and pine oil, halogenated hydrocarbons such as dichloromethane, ethers such as etilenglikolevye ether, esters, t is such as ethyl acetate, ethylpropyl, n-butyl acetate, or ethers of alkoxylate, such as methoxypropylacetate or amoxicilpin. In addition, can be used and mixtures of these compounds.

If desired in the coating composition can include one or more so-called "acceptable solvents. Acceptable solvent is a volatile organic compound that participates in atmospheric photochemical reactions leading to the formation of smog. They may be an organic solvent, but in this case it takes so much time to pass its reaction 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 acceptable solvents that are approved for use in paints and coatings, include acetone, methyl acetate, para-chlorobenzotrifluoride (commercially available under the name Oxsol 100) and volatile methylsiloxane. In addition, the maximum solvent is (tertiary butyl)acetate.

In addition to the above-described components in the coating compositions corresponding to the present invention, may be present and other compounds. Such compounds can be binding and/or reactive diluents, optionally available is reactive groups, you can sew with the above hydroxyquinoline compounds and/or isocyanatobenzene by suturing. Examples of such other compounds are ketone resins, esters of aspergillomas acid and hidden or unhidden amidofunctional compounds such as oxazolidine, catimini, aldimine, diimine, secondary amines and polyamine. Data and other connections to experts in the relevant field of technology is known and referred, inter alia, in the document US 5214086.

In addition, the coating composition may contain other ingredients, additives or excipients commonly used in coating compositions, such as pigments, dyes, surfactants, substances that contribute to the dispersion of pigments, equalizer, wetting, additives that prevent the emergence of rabini, defoamers, additives that prevent the formation of stains, heat stabilizers, light stabilizers, absorbers of UV radiation, antioxidants and fillers.

As it usually takes place in the case of coating compositions containing hydroxyquinoline binder and isocyanatobenzyl stapler, the composition conforming to the invention, is characterized by limited viability. Therefore, in an appropriate case, the composition has the appearance of mnogokomponentnoi the composition, for example type two-component composition or type three-component composition. Therefore, the invention also relates to a kit of parts used to obtain the coating composition, including

a) the module binder containing polyol,

b) module staple containing polyisocyanate, and

C) optional module diluent containing a volatile organic solvent,

where the catalyst based on metal for the reaction of the connection between isocyanate groups and hydroxyl groups, tifunctional compound and carboxylic acid, in which the carbonyl group of the carboxylic acid is in conjugation with the π-electronic system, distributed, individually or in combination, in one or more of the modules. In a preferred variant of realization of the catalyst based on metal, tifunctional compound and carboxylic acid, in which the carbonyl group of the carboxylic acid is in conjugation with the π-electronic system, distributed, individually or in combination, in one or more of the modules (a) and (C). The presence of components of the composition in the form of a kit of parts has the additional advantage that the components can have with the desired molar ratios. Thus, the risk of errors due to incorrect is the proportions of the individual components in the mixture, is reduced to a minimum.

Coating composition of the invention can be applied to any substrate. The substrate can be, for example, metal, such as iron, steel and aluminum, plastic, wood, glass, synthetic material, paper, leather and a layer of other coverage. Layer another layer may be formed coating composition of the present invention, or it may be a different coating composition. Coating compositions of the present invention demonstrate their particular suitability as transparent coatings, coatings basics, pigmented coating layers, primers and bonding agents. If the coating composition of the invention is to provide a clear coating, it is preferably applied over a coating of foundations that give color and/or special effect. In this case, the transparent layer forms the top layer of the multilayer coatings, such as are usually applied to the outer surfaces of the cars. The coverage of the surface can be water coverage of the surface or coating fundamentals of solvent.

Coating compositions are suitable for use when applying coatings to objects, such as bridges, pipelines, industrial plants or buildings, installations for oil and gas or ships. Compositions are in particular the items well suited for use in finishing and re-finishing cars and large vehicles, such as trains, trucks, buses, and planes.

The applied coating composition can be very effectively cured at a temperature equal to, for example, 0-60°C. If desired, the coating composition can be cured in an oven, for example at a temperature in the range of 60-120°C. alternatively, the curing may contribute to the radiation (far -) infrared radiation. Before curing at elevated temperature applied coating composition optionally can be exposed to phase distillation of volatile components.

You must understand that the term "coating composition", as used herein, also includes its use as an adhesive composition.

Examples

The used abbreviations and materials of raw materials

Trigonox BThe polymerization initiator peroxide on the basis from the company Akzo Nobel Chemicals.
A solution of BYK 331A mixture consisting of 10% (wt.) BYK 331 - silicone additive from BYK Chemie - and 90% (wt.) n-butyl acetate.
Tinuvin 1130The absorber of UV radiation from the company Ciba Specialty Chemicals.
Tinuvin 292 Light from the company Ciba Specialty Chemicals.
SolventA mixture of n-butyl acetate and methylisobutylketone mass ratio 72/16.
A solution of DBTLA mixture consisting of 10% (wt.) dibutyltindilaurate-tin and 90% (wt.) n-butyl acetate.
RTMRPentaerythritol(tetrakis)-3-mercaptopropionate.
A solution of benzoic acidA mixture consisting of 12% (wt.) benzoic acid, 72% (wt.) n-butyl acetate and 12% (wt.) methylisobutylketone.
A solution of acetic acidA mixture consisting of 12% (wt.) acetic acid, 72% (wt.) n-butyl acetate and 12% (wt.) methylisobutylketone.
The hardenerA mixture consisting of 70% (wt.) Tolonate HDL-LV - which is the trimer of hexamethylenediisocyanate from the company Rhodia, and 15% (wt.) n-butyl acetate and 15% (wt.) 3-amoxicilpin.

Getting polyetherpolyols on the basis of esters

In a reaction vessel equipped with a stirrer, a heating system, a thermocouple, Packed column, condenser and a water separator were placed 440 mass frequent the th of trimethylolpropane, 170 mass parts hexahydrophthalic anhydride and 390 mass parts Edenor V85. In addition, as a catalyst was added to the aqueous phosphoric acid with a concentration of 85% (wt.) in the amount of 1% (wt.) when calculating the number of structural elements. In the atmosphere of inert gas, the temperature is gradually increased to 240°C. the Reaction water were released to such an extent that the temperature in the upper part of the column does not exceed 102°C. the Reaction is continued until, until he got a complicated polyester, characterized by a hydroxyl number 306 mg KOH/g

Getting polyacrylonitrile

In a polymerization vessel in n-butyl acetate from the mass of 5.7 parts of methacrylic acid, 110,3 mass parts of butyl methacrylate, 164,7 mass parts of hydroxyethylmethacrylate and 224 mass parts (tertiary butyl)methacrylate received polyacrylonitril. As the polymerization initiator used is 25.3 mass parts Trigonox B. Solution polyacrylonitrile was characterized by a content of nonvolatile substances 67% (wt.). Data on GPC: Mn 2090, Mw 4470, HE theoretical number: 140 mg KOH/g, in calculating the amount of solid matter of the resin, that is, excluding the solvent.

Obtaining coating compositions

Coating composition 1, corresponding to the invention and comparative compositions a to D were obtained by mixing the comp is required, shown in table 1. The number in table 1 are given in mass units.

Table 1
ComponentExample aThe example InExampleExample DExample 1
Polyacrylonitril136,8136,8136,8136,8136,8
Polyetherpolyols on the basis of esters51,151,151,151,151,1
A solution of BYK 3312,42,42,42,42,4
Tinuvin 2922,42,42,42,42,4
Tinuvin 11301,51,51,5 1,51,5
Solvent67,367,313,913,913,9
A solution of DBTL7,37,37,37,37,3
RTMR-1,2-1,21,2
A solution of benzoic acid--60,8-60,8
A solution of acetic acid---60,8-
The hardener139,8139,8139,8139,8139,8
Viscosity (C)14,514,3 15,013,714,6
Viability (minutes)21695775100

The viscosity was measured using a funnel according to DIN and expressed in seconds. The viscosity shown in table 1, represents the initial viscosity after mixing. Viability is the time required after mixing the composition to achieve a viscosity in 21 seconds.

Coating compositions of comparative examples a to D of example 1, corresponding to the invention, by way of sputtering was applied in the form of transparent coatings in 2 or 3 layers on metal panel, which previously was coated with the basics. Coverage was utverjdali for 30 minutes at 60°C and then kept at room temperature. The dry thickness of the transparent coating was approximately 60 μm for two layers and 85 μm in the case of 3 layers.

After curing for different samples was performed by matching the number of point sinks and the number of shells translated into a scale from 1 to 10 (1 = serious education point of shells, 10 = very small number of point sinks or lack of them).

Appearance you ageut through osypanie enamel (MA) and assessed visually for to make a conclusion about the overall appearance. Note was taken of the following aspects: glitter, Marsena, flow and clarity of the image/identity of the image. These aspects combined into one score in a scale of 1-10 (1 = very bad appearance, 10 = excellent appearance).

Stickiness in a warm condition was determined manually in the compression of the finger to the surface of a warm coating after curing at 60°C. the Results are shown in a scale of 1 to 10 (1 = very much stickiness, 10 = no stickiness).

Alignment was determined visually, by studying the flow and smoothness of the cured coating. The results are shown in a scale of 1 to 10 (1 = very poor alignment, 10 = perfect alignment).

Some properties of the coatings are summarized in table 2.

Table 2
Example aThe example InExampleExample DExample 1
Appearance (MA)64668
Nali is their shells 31337
Stickiness in heat
state
7,59899
Alignment4577,57,5

Based on data from table 1 we can come to the conclusion that the coating composition conforming to the invention, characterized by a longer viability in comparison with that observed for all of the comparative compositions. Based on data from table 2 one can conclude that the appearance of the transparent coating is superior appearance comparative transparent coatings. In addition, a transparent coating of example 1, corresponding to the invention, the point of the shell is practically absent. After curing for 30 minutes at 60°C. all samples are characterized by a low degree of stickiness, which indicates a good speed curing. These results demonstrate that the coating composition of the invention demonstriruet the improved balance of properties.

1. Coating composition containing a polyisocyanate, a polyol, a catalyst based on metal for the reaction of the connection between isocyanate groups and hydroxyl groups, tifunctional compound and carboxylic acid wherein the carbonyl group of the carboxylic acid is in conjugation with the π-electron system.

2. Coating composition according to claim 1, where the carboxylic acid is an aromatic carboxylic acid.

3. Coating composition according to claim 1, where the carboxylic acid is an alpha-beta unsaturated carboxylic acid.

4. Coating composition according to claim 1, where the base catalyst for the reaction of the connection between isocyanate groups and hydroxyl groups is a metal selected from tin, bismuth, zirconium and mixtures thereof.

5. Coating composition according to any one of claims 1 to 4, where the amount of the catalyst based on metal is in the range from 0.001 to 10% (wt.) when calculating the amount of nonvolatile substances in the composition.

6. Coating composition according to claim 1, where the number tifunctional compounds is in the range from 0.001 to 10% (wt.) when calculating the amount of nonvolatile substances in the composition.

7. Coating composition according to claim 1, where the number of carboxylic acid, in which the carbonyl group of carboxylic acid is paired and with the π-electron system, is in the range from 0.1 to 18% (wt.) when calculating the amount of nonvolatile substances in the composition.

8. Coating composition according to claim 1, where the composition contains a volatile organic solvent.

9. Coating composition of claim 8, where the amount of volatile organic solvent does not exceed 420 g/l when calculated on the amount of coating composition.

10. The set of parts designed to obtain a coating composition according to any one of the preceding paragraphs, including
a) part of a binder containing polyol,
b) part of the staple containing polyisocyanate, and
c) optional part of the diluent containing a volatile organic solvent,
where the catalyst based on metal for the reaction of the connection between isocyanate groups and hydroxyl groups, tifunctional compound and carboxylic acid, in which the carbonyl group of the carboxylic acid is in conjugation with the π-electronic system, distributed individually or in combination, in one or more of the parts.

11. The set of parts of claim 10, where the catalyst based on metal for the reaction of the connection between isocyanate groups and hydroxyl groups, tifunctional compound and carboxylic acid, in which the carbonyl group of the carboxylic acid is in conjugation with the π-elect is authorized by the system, distribute individually or in combination, in one or more of the parts (a) and (C).

12. Applying a coating composition according to any one of the preceding claims 1 to 8 to obtain the coating layer when finishing and re-finishing cars and vehicles.

13. The application indicated in paragraph 12, where the obtained coating layer is a layer in a multilayer lacquer coating.

14. Use item 13, where the obtained coating layer is a top coating layer in a multilayer lacquer coating.



 

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FIELD: chemistry.

SUBSTANCE: present invention relates to obtaining new aspartates. Aspartates are obtained by reacting di- or polyamine with an unsaturated ester and then by reacting the obtained product with maleinimide.

EFFECT: obtaining new aspartates and their use as reactive components for polyiisocyanates in two-component compositions for polyurethane coatings.

4 cl, 3 ex, 1 tbl

FIELD: chemistry.

SUBSTANCE: invention relates to undercoating compositions containing at least one polyurethane prepolymer A with isocyanate groups; at least one aliphatic polyisocyanate B; at least one aromatic polyisocyanate C; at least one reaction product D, obtained from at least one epoxysilane and at least one aminosilane with quantitative ratio of atoms of active hydrogen of the amine to the number of epoxy groups of the epoxysilane equal to 3:1-1:3, or at least one epoxysilane and at least one mercaptosilane with quantitative ratio of mercapto groups to epoxy groups equal to 1.5:1-1:1.5, with content of product D equal to 0.5-15 wt % of the total weight of A+B+C+D. The invention also relates to use of the undercoating composition as an undercoating for adhesives, sealants and floor coatings.

EFFECT: good adhesion to problematic substrates with long open time.

24 cl, 2 tbl

FIELD: chemistry.

SUBSTANCE: invention relates to polymer construction compositions and can be used for making sports coatings. The coating is formed by depositing a composition onto a hard base, where the composition contains an isocyanate prepolymer, a mixture of chalk and caustic lime in ratio of 5:1, a mixture of chlorinated paraffin wax, low-molecular polyethylene and calcium oxide in ratio of 1:2:0.5, a catalyst, low-molecular tri-functional alcohol, chlorinated paraffin wax, plasticiser and holding for 20-24 hours. A second layer is deposited, based on a polymer composition which contains oligodienediol with molecular weight of 2000-5000 and 0.7-1.7% content of hydroxyl groups, a plasticiser, mineral filler, a mixture of chlorinated paraffin wax, low-molecular polyethylene and calcium oxide in ratio of 1:2:0.5, low-molecular tri-functional alcohol, polyisocyanate, catalyst, 2,4,6-tri-tertbutylphenol, ethyl silicate and kept for 20-24 hours again. A third layer of polymer composition is deposited, which contains a polysulphide oligomer, a plasticiser, zinc oxide, rubber crumbs with particle size of 3 mm and 1 mm in ratio of 3:1, vulcanising paste No.9, diphenylguanidine and subsequently held for 20-24 hours.

EFFECT: improved dynamic and elastic-hysteresis properties, hydrolytic and thermal oxidative stability of the coating.

2 tbl

FIELD: chemistry.

SUBSTANCE: invention relates to polymer construction compositions and can be used for making sports coatings. The coating is formed by depositing a composition onto a hard base, where the composition contains an isocyanate prepolymer, a mixture of chalk and caustic lime in ratio of 5:1, a mixture of chlorinated paraffin wax, low-molecular polyethylene and calcium oxide in ratio of 1:2:0.5, a catalyst, low-molecular tri-functional alcohol, chlorinated paraffin wax, plasticiser and holding for 20-24 hours. A second layer is deposited, based on a polymer composition which contains oligodienediol with molecular weight of 2000-5000 and 0.7-1.7% content of hydroxyl groups, a plasticiser, mineral filler, a mixture of chlorinated paraffin wax, low-molecular tri-functional alcohol, polyisocyanate, catalyst, 2,4,6-tri-tertbutylphenol, ethyl silicate and kept for 20-24 hours. A third layer of polymer composition is deposited, which contains a polysulphide oligomer, a plasticiser, zinc oxide, rubber crumbs with particle size of 3 mm and 1 mm in ratio of 3:1, vulcanising paste No.9, diphenylguanidine, oligodienediol with molecular weight of 2000-5000 and 0.7-1.7% content of hydroxyl groups, low-molecular tri-functional alcohol, polyisocyanate, catalyst and subsequently holding for 20-24 hours.

EFFECT: improved dynamic and elastic-hysteresis properties, hydrolytic and thermal oxidative stability of the coating.

2 tbl

FIELD: chemistry.

SUBSTANCE: invention relates to polymer construction compositions and can be used for making sports coatings. The coating is formed by depositing a composition onto a hard base, where the composition contains an isocyanate polyester prepolymer, a mixture of chalk and caustic lime in ratio of 5:1, a mixture of chlorinated paraffin wax, low-molecular polyethylene and calcium oxide in ratio of 1:2:0.5, a catalyst, low-molecular tri-functional alcohol, chlorinated paraffin wax, plasticiser and holding for 20-24 hours. A second layer is deposited, based on a polymer composition which contains oligodienediol with molecular weight of 2000-5000 and 0.7-1.7% content of hydroxyl groups, a plasticiser, mineral filler, a mixture of chlorinated paraffin wax, low-molecular polyethylene and calcium oxide in ratio of 1:2:0.5, low-molecular tri-functional alcohol, polyisocyanate, catalyst, 2,4,6-tri-tertbutylphenol, ethyl silicate and kept for 20-24 hours. A third layer of polymer composition is deposited, which contains a polysulphide oligomer, a plasticiser, zinc oxide, rubber crumbs with particle size of 3 mm and 1 mm in ratio of 3:1, vulcanising paste No.9, diphenylguanidine, isocyanate polybutadiene prepolymer, low-molecular tri-functional alcohol, catalyst and subsequently held for 20-24 hours.

EFFECT: improved dynamic and elastic-hysteresis properties, hydrolytic and thermal oxidative stability of the coating.

2 tbl

FIELD: chemistry.

SUBSTANCE: invention relates to polymer construction compositions and can be used for making sports coatings. The coating is formed by depositing a composition onto a hard base, where the composition contains an isocyanate polyester prepolymer, a mixture of chalk and caustic lime in ratio of 5:1, a mixture of chlorinated paraffin wax, low-molecular polyethylene and calcium oxide in ratio of 1:2:0.5, a catalyst, low-molecular tri-functional alcohol, chlorinated paraffin wax, plasticiser and holding for 20-24 hours. A second layer of polymer composition is deposited, which contains oligodienediol with molecular weight of 2000-5000 and 0.7-1.7% content of hydroxyl groups, a plasticiser, mineral filler, a mixture of chlorinated paraffin wax, low-molecular polyethylene and calcium oxide in ratio of 1:2:0.5, low-molecular tri-functional alcohol, polyisocyanate, catalyst, 2,4,6-tri-tertbutylphenol, ethyl silicate and kept for 20-24 hours. A third layer of polymer composition is deposited, which contains a polysulphide oligomer, a plasticiser, zinc oxide, rubber crumbs with particle size of 3 mm and 1 mm in ratio of 3:1, vulcanising paste No.9, diphenylguanidine, isocyanate polybutadiene prepolymer, low-molecular tri-functional alcohol, catalyst, oligodienediol with molecular weight of 2000-5000 and 0.7-1.7% content of hydroxyl groups and subsequently holding for 20-24 hours.

EFFECT: improved dynamic and elastic-hysteresis properties, hydrolytic and thermal oxidative stability of the coating.

2 tbl

FIELD: chemistry.

SUBSTANCE: invention relates to polymer construction compositions and can be used for making sports coatings. The coating is formed by depositing a composition onto a hard base, where the composition contains an isocyanate prepolymer, a mixture of chalk and caustic lime in ratio of 5:1, a mixture of chlorinated paraffin wax, low-molecular polyethylene and calcium oxide in ratio of 1:2:0.5, a catalyst, low-molecular tri-functional alcohol, chlorinated paraffin wax, plasticiser and holding for 20-24 hours. A second layer of polymer composition is deposited, which contains oligodienediol with molecular weight of 2000-5000 and 0.7-1.7% content of hydroxyl groups, a plasticiser, mineral filler, a mixture of chlorinated paraffin wax, low-molecular polyethylene an calcium oxide in ratio of 1:2:0.5, low-molecular trifunctional alcohol, polyisocyanate, catalyst, 2,4,6-tri-tertbutylphenol, ethyl silicate and kept for 20-24 hours. A third layer of polymer composition is deposited, which contains oligodienediol with molecular weight of 2000-5000 and 0.7-1.7% content of hydroxyl groups, a plasticiser, mineral filler, rubber crumbs with particle size of 3 mm and 1 mm in ratio of 3:1, polyisocyanate, low-molecular tri-functional alcohol, catalyst, 2,4,6-tri-tertbutylphenol, ethyl silicate and subsequently holding for 20-24 hours.

EFFECT: improved dynamic and elastic-hysteresis properties of the coating.

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: 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

The invention relates to a filler composition containing A) at least one polyacrylate containing hydroxyl group, consisting of 40-70 wt.% aromatic vinyl monomers and/or methacrylate, 25-40 wt.% (meth)acrylic monomers with a hydroxyl functional group, 0-20 wt.% (meth)acrylic monomers having at least 2 carbon atoms in the alkyl group, and 0.5-2.5 wt.% (meth)acrylic acid, where the polyacrylate containing hydroxyl group has a hydroxyl number of from 100 to 160 mg KOH/g of solid polymer, an acid number of from 5 to 20 mg KOH/g of solid polymer, Mw more than 15,000 and a Tg of 25 to 100C, b) at least one connection MDI, and (C) at least one pigment, and a filler composition has a volumetric concentration of pigment from 40 to 80% relative to the solids content of

The invention relates to polymer mass used as a dispersing resin, more specifically, to a polymeric binder to obtain containing pigment preparations or masses for coating
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