Aqueous coating composition

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

 

The present invention relates to aqueous coating compositions based on oxidation-curable polymer.

In recent years, significant efforts have been made to develop coating compositions with a low content of volatile organic compounds (VOC), in particular solvents. Legislative provisions limiting the VOC content in coatings stimulated research and development in search of new technologies aimed at reducing emissions of solvents from the coating. One of the technologies include replacement of organic solvents with water. However, although the use of coating compositions, water-based benefits in terms of health and safety, these coating compositions must meet the quality standards expected for compositions, water-based.

Oxidation-curable polymers are polymers that are sewn when exposed to oxygen due to the content of fragments of unsaturated fatty acids. Alkyd resins are typical examples of such polymers. Alkyd paints otverzhdajutsja under the action of oxygen by oxidative crosslinking of unsaturated aliphatic acids as functional components. However, alkyd paints are usually characterized by a relatively slow rate of drying. For C the drying time were proposed hybrid water-dispersible alkyd resins and acrylic polymers with relatively high molecular weight. Were also offered alkyd resins, modified acrylic compounds, such as described in U.S. patent No. 4451596.

European patent EP 0874875 discloses a dye composition for water-based high solids content, based on alkyd resin and acrylate. European patent 1171534 describes a water-dispersible coating composition based on a mixture of oxidation-curable polymer, such as alkyd resin, and a vinyl polymer with a carbonyl functional groups.

While in prototype alkyd-acrylic hybrid colorful systems apply emulsified acrylates with a relatively high molecular weight, it has been recently discovered that if you use dilaceration acrylates with an acid number of at least 15 mg/pot, this leads to unexpected benefits, such as improving time-saving technological properties, rheological characteristics and wetting of the substrate. Further, this allows a water-based ink with a high concentration of solid components in the water content and volatile organic compounds (VOC) less than 40% by weight of the total composition. It was also found that in many cases significantly improved gloss and hiding power. Dilaceration acrylates are n the structured and this means that they do not form covalent bonds with oxidation-curable resin or other, it is possible audience, connecting components to any significant degree. The acrylates used in the amount of 1.5% or more of the total weight of the coating composition, for example, 4.5% by weight or more.

In modern practice, such acrylates are often used as intensifiers grinding. In General, these acrylates are capable of swelling in water and have a relatively high acid number, for example, 65 mg KOH/g of acrylate or greater, or 70 mg KOH/g of acrylate or more.

In General, such dilaceration acrylates have an average molecular weight Mw of 200,000 g/mol or below. In this regard, Mw denotes the mass-average molecular weight. Mw can be determined, for example, by the method of gel permeation chromatography (GPC), which is described on page 4 of Chapter 1 of the book “The Characterization of Polymers”, published by Rohm and Haas Company, Philadelphia, Pennsylvania, in 1976, using polymethyl methacrylate as the standard. The mass-average molecular mass Mw can also be calculated. In systems containing agents, chain transfer, theoretical mass-average molecular weight represents the total weight of the polymerized monomer in grams divided by the total molar amount of the agent of the transfer circuit, spontannogo during the polymerization. For emulsion-polymer system, which does not contain agent transfer chain, more than a rough estimate can be obtained if we take the total weight of the polymerized monomer in grams and divide that quantity by the product of the molar amount of initiator, multiplied by the efficiency of initiation. Further information about theoretical calculations of molecular weight can be found in the book “Principles of Polymerization”, George Odian, second edition, published by John Wiley and Sons, New York, New York, in 1981, and in the book “Emulsion Polymerization”, edited by Irja Pirma, published by Academic Press, New York, New York, 1982.

The acrylate may be obtained by free-radical polyprionidae at least one unsaturated olefinic monomer type, chosen from esters of acrylic acid and methacrylic acid, examples of which are methyl acrylate, methyl methacrylate, acrylate, methacrylate, n-butyl acrylate, n-butylmethacrylate, 2-hexyl acrylate, 2-ethylhexylacrylate, isopropylacetate, isopropylacetate, n-propylacetate and n-propylbetaine. Other applicable monomers, such as 1,3-butadiene, isoprene, styrene, divinylbenzene, Acrylonitrile, Methacrylonitrile, vinylchloride (such as vinyl chloride), complex vinyl esters such as vinyl acetate, finalproject and vinyl the lithate), heterocyclic vinyl compounds, complex alkalemia esters of unsaturated ethylenedicarboxylic acids (such as di-n-butylamine and di-n-butylfuran). In addition, the acrylate may contain as copolymerizing blocks a small amount (for the most part, from 0.5 to 10% by weight) unsaturated monocarboxylic acids and/or dicarboxylic acids with one double bond, for the most part, containing from 3 to 6 carbon atoms, and/or N-unsubstituted or N-substituted amides, mainly of acrylic acid, methacrylic acid, beta-carboxyethylidene, fumaric acid, basis of itaconic acid, acrylamide, methacrylamide, N-methylacrylamide, N-methylolacrylamide, N-n-butoxypolyethylene, maleimide and maleic diamide acid, and unsaturated sulfonic acids with one double bond, mainly vinylsulfonic acid and methacrylamidoethylene acid. Good results were obtained when using pure acrylate prepared without additives of acrylic and/or methacrylic esters and/or acids. A commercially available example of applicable dilacerating acrylate is, for example, Joncryl 8004 supplied by the company Johnson Polymer.

At least part of the oxidation-curable resin includes oxidation-curable groups, i.e., unsaturated Alif the optical connection, at least part of which is polyunsaturated. Typical examples of such resins are alkyd resins. Alkyd resins can be obtained from unsaturated and saturated fatty acids, polycarboxylic acids and di - or polyfunctional hydroxyl-containing compounds. For example, can be used mono - and polyunsaturated fatty acids, for example, those which contain from 12 to 26 carbon atoms. Specific examples are monounsaturated fatty acids, such as dolezelova acid, Mirandolina acid, palmitoleic acid, oleic acid, gadolinia acid, erucic acid, ricinoleic acid; double-unsaturated fatty acids such as linoleic acid; triple-unsaturated acids, such as linolenic acid, aleocharinae acid and lisanova acid; four unsaturated fatty acids such as arachidonic acid and kopandanova acid, and other unsaturated fatty acids derived from animal or vegetable oils. Optionally, can also be used saturated acids. Specific examples include lauric acid, myristic acid, palmitic acid, stearic acid, and the arachnid acid. Other monocarboxylic acids suitable for use include tetrahydrobenzoic acid and hiderow is nnow or negidrirovannogo abietic acid or its isomer. If desired discussed monocarboxylic acids may be used in the preparation of alkyd resins, fully or partially in the form of triglycerides, such as vegetable oil. If desired, can be applied a mixture of two or more of such monocarboxylic acids or triglycerides, optionally in the presence of one or more saturated (cyclo)aliphatic or aromatic monocarboxylic acids, for example, Pikalevo acid, 2-ethylcaproic acid, lauric acid, palmitic acid, stearic acid, 4-tert-butylbenzoic acid, cyclopentanecarboxylic acid, naphthenic acid, cyclohexanecarboxylic acid, 2,4-dimethylbenzoic acid, 2-methylbenzoic acid and benzoic acid.

Examples of polycarboxylic acids include phthalic acid, isophthalic acid, terephthalic acid, 5-tert-utilizatorului acid, trimellitic acid, pyromellitic acid, succinic acid, adipic acid, 2,2,4-trimethyladipic acid, azelaic acid, sabotinova acid, diarizonae fatty acid, cyclopentane-1,2-dicarboxylic acid, cyclohexane-1,2-dicarboxylic acid, 4-methylcyclohexane-1,2-dicarboxylic acid, tetrahydrophthalic acid, endoecological-1,2-dicarboxylic acid, butane-1,2,3,4-tetracarbonyl acid, antisapation-cyclohexane-1,2-di is Urbanova acid, cyclohexane-1,2,4,5-tetracarbonyl acid and butane-1,2,3,4-tetracarbonyl acid. Optionally consider carboxylic acids may be used in the form of anhydrides or esters, for example a complex ester of an alcohol containing from 1 to 4 carbon atoms.

In addition alkyd resin includes di - or polyfunctional, hydroxycobalamin connection. Examples of suitable bifunctional hydroxyl-containing compounds are ethylene glycol, 1,3-propandiol, 1,6-hexanediol, 1,12-dodecanediol, 3-methyl-1,5-pentanediol, 2,2,4-trimethyl-1,6-hexanediol, 2,2-dimethyl-1,3-propandiol and 2-methyl-2-cyclohexyl-1,3-propandiol. Examples of applicable triolo are glycerin, trimethylated and trimethylolpropane. Suitable polyols having more than 3 hydroxyl groups, include pentaerythritol, sorbitol and the products of esterification of the considered compounds, such as di(trimethylol)propane, di-, tri - and tetrapeptides.

Alkyd resins can be obtained by direct esterification of components with the choice of these components have already been converted to esters of diols or polyesters of diols. Alternatively, the unsaturated fatty acid can be added in the form of a drying oil, such as sunflower oil, linseed oil, tuna oil, dehydrated castor oil, coconut mA is lo and dehydrated coconut oil. Transesterification with other added acids and dialami will then give you the final alkyd resin. This transesterification, in General, occurs at a temperature in the range from 115 to 250°C., optionally in the presence of solvents such as toluene and/or xylene. The reaction is usually conducted in the presence of catalytic amounts of a catalyst for transesterification. Examples of transesterification catalysts suitable for use include acids such as para-toluensulfonate acid, a basic compound such as amine, or compounds such as calcium oxide, zinc oxide, tetraisopropyldisiloxane, dibutylamine and chloride triphenylantimony.

The average molecular weight Mn of alkyd resin, thus prepared, may be, for example, at least 1000, for example, from 2000 to 5000. Alkyd resin can be dispersed in water, for example, with the addition of 2-30% by weight of surface-active substances.

Optionally, the oxidation-curable resin may be alkyd-urethane resin. Such alkyd resins can be, for example, prepared as described in the patent EP-A 0 444 454. Suitable polyurethanes, including oxidation-curable fragments aliphatic esters, for example, represent NeoRez R 2001, NeoRez R 2020, NeoRez R2040 (supplied by the company DSM Neoresins), Valires HA 04001 (othermy Actichem), Spensol F97 (from Reichold company) and Halwedrol OX 47-1-340, from the company Hüttenes-Albertus.

For the purposes of this invention the aqueous coating composition means a composition in the aqueous medium in which water is the main component. Small amounts of organic liquids, that is, co-solvents may be present on the choice. Examples of co-solvents include propylene carbonate, N-organic (NMP), diethylene glycol, butyleneglycol, dibutylamino, n-butoxypropyl and onomatology broadcast dipropyleneglycol, propylene glycol and methoxybutanol.

The drying or curing AIDS, can be used to activate the oxidative curing of alkyd resin. Examples of driers are metal salts and aliphatic acids, including cycloaliphatic acids such as Caprylic acid and naphthenic acid, where the metal is, for example, cobalt, manganese, vanadium, lead, zirconium, calcium, zinc or rare earth metals. Also used a mixture of driers. Driers (calculated as metal) are customarily used in amounts of from 0.001 to 5% by weight, relative to the solid content of the components of the alkyd resin. Optionally, coating composition may include accelerating the drying of the complexing agents, for example, 2,2'-bipyridyl and 1,10-phenanthroline. The complexing agents, for example, could the t to be added in an amount up to 3% by weight, for example, 0.1 to 1.5% by weight, based on the total weight of the binder component.

Optionally, coating composition includes an acrylate binder component, such as emulsified latex binder. It was found that in many cases dilacerations acrylate had a positive impact on compatibility, oxidation-curable resin and emulsified acrylic binder. Emulsified acrylic binder, for example, can have a mass-average molecular weight Mw of 300,000 g/mol or higher. Applicable examples of such acrylate binder is Primal® AC 2508 supplied by the company Rohm and Haas. Apply pure acrylate is Joncryl® SCX 8285 supplied by the company Johnson Polymer. Such acrylate can be supplied with the functionality of clossiana. Suitable examples are carbonyl-containing acrylates, such as Joncryl® SCX 8383 and Neocryl® XK 98, stapling which is hydrazines or polyamines, such as compounds shown in the patent EP 1171534. Suitable polycarbosilanes acrylate may be formed by free-radical polyprionidae at least one carbonyl-containing unsaturated monomer with one double bond and at least one other unsaturated monomer olefin type, not having a carbonyl function. Examples of unsaturated monomers, comorienne carbonyl functional group, include acrolein, methacrolein, diacetonitrile, CROTONALDEHYDE, 4-vinylbenzene, mineralquellen with 4-7 carbon atoms, such as vinylmation, and aryloxy and methacryloxypropyl. Other examples include acrylamidoethyl aldehyde, Methacrylonitrile aldehyde, 3-acrylamidophenylboronic aldehyde, diacetonitrile and diacetonitrile. The proportion of carbonyl functional groups in the vinyl polymer may be, for example, from 3 to 200 milliequivalents per 100 g of polymer, for example, from 6 to 100 milliequivalents per 100 g of polymer. Examples of olefinic unsaturated monomers not containing a carbonyl group include 1,3-butadiene, isoprene, styrene, divinylbenzene, Acrylonitrile, Methacrylonitrile, vinylchloride (such as vinyl chloride), complex vinyl esters such as vinyl acetate, finalproject and vanillaware), heterocyclic vinyl compounds, complex alkalemia esters of unsaturated dicarboxylic acids with one double bond (such as di-n-butylamine and di-n-butylfuran) and, in particular, esters of acrylic acid and methacrylic acid, examples of which are methyl acrylate, methyl methacrylate, acrylate, methacrylate, n-the butyl acrylate, n-butylmethacrylate, 2-hexyl acrylate, 2-ethylhexylacrylate, isopropylacetate, hydroxyethylmethacrylate, Hydra is nsiproperties, isopropylacetate, n-propylacetate and n-propylbetaine. Can also be used olefinic unsaturated monomer bearing an anionic hydrophilic group, examples of which include acrylic acid, methacrylic acid, taconova acid and/or maleic acid. Olefinic unsaturated monomers having a nonionic group such as alchooxymethylolchlorbutane, can also be used.

Optionally, one or more acrylate with carbonyl function can carry amine and/or hydrazine powered functional groups in addition to carbonyl functional groups. Hydrazine powered functional groups can be introduced by the polymerization of at least one olefinic unsaturated monomer with links, in the chain which are capable of hydrazinolysis group, which subsequently react with hydrazine powered reagent to convert at least a portion capable of hydrazinolysis groups in hydrazine powered functional groups. Examples of the monomers in the chain which are capable of hydrazinolysis include chloroacrylate acid and especially the acid chloride or esters of acrylic acid, and the acid chloride or esters of methacrylic acid. Applicable esters of methacrylic acid are methyl, ethyl, propyl, isopropylene is, n-butyl, tertiary or secondary butyl esters.

Suitable acrylate with carbonyl function can be prepared using any technology polymerization, initiated by free radicals, with the use of a free radical initiator and a suitable heating (for example, from 40°C to 90°C). The polymerization can be carried out in aqueous medium, and in particular emulsion polymerization in an aqueous medium is used for obtaining the polymer using the traditional choice of dispersant. Free radical initiators include hydrogen peroxide, tert-butylhydroperoxide and persulfates such as ammonium persulfate, potassium persulfate and sodium persulfate, or can be used redox system.

Separate polyamine or polyhedrin can be used for stitching polycarbosilanes binder component. If you add separate polyamine or polyhydrazides cross-linking agents, the content may be, for example, such that the composition includes from about 0.02 to 1.6 mol, for example from 0.05 to 0.9 mole of amine or hydrazine powered groups per mole of carbonyl functional groups present in the composition. Possible polyamine include, but are not limited to such, the primary and/or secondary amino groups, and contain from 2 to 10 amino is Rupp molecule. Good results were obtained with primary amines. Suitable examples include Ethylenediamine, 4-amino-1,8-ectendomycorrhizae, decamethylenediamine, 1,2-diaminocyclohexane, ISOPHORONEDIAMINE, urea, N-(2-hydroxyethyl)Ethylenediamine, Tris(2-amino-ethyl)amine, melamine, Diethylenetriamine, dipropylenetriamine, dibutylaniline and polyethylenimine. Possible polyhedrin include bis-hydrazides of dicarboxylic acids, bis-hydrazones, with specific examples of how dihydrated oxalic acid, dihydrazide malonic acid, dihydrazide succinic acid, dihydrazide adipic acid and dehydrated sabatinovka acids, bis-hydrazides cyclohexanedicarboxylic acids, bis-hydrazides azelaic acid, and carbonic acid hydrazides, bis-semicarbazides, trihydride, dihydroindolone and dihydrazino derivatives of aromatic hydrocarbons, for example 1,4-dihydrobenzo and 2,3-dehydrogenization, Digidesign.

Optionally, the acrylate with the carbonyl function can be a polyurethane acrylate, for example, of the type described in the patent EP-A 0332326. Polyurethane acrylate can be formed, if you enter one or more vinyl monomers in the reaction under the conditions of free radical polymerization in the presence of a dispersion of polyurethane resin with already developed circuits using the conventional technology. Thus, free radical initiators may be added to the mixture of the polyurethane dispersion and the vinyl monomer or, alternatively, the monomer may be gradually added to the polyurethane dispersion containing the initiator. In yet another embodiment, obtaining the polyurethane acrylate is prepared solution of the prepolymer with terminal isocyanate groups in the at least one vinyl monomer. Then the solution emulsify in the water environment, and the prepolymer with terminal isocyanate groups is the lengthening of the chains. Then either may be added to the vinyl monomer and initiated its polymerization, or may be initiated polymerization of the vinyl monomer, and during the polymerization can be added incremental vinyl monomer. Suitable examples of such polyurethane acrylate are Neopac® E111, Neopac® E 125, commercially available from the company DSM NeoResins, and Alberdingk® APU 1061 and Alberdingk® APU 1062 from the company Alberdingk Boley.

In the coating compositions according to the invention the weight ratio dilacerating acrylate to the emulsified acrylate may be, for example, in the range from 1:0.5 to 1:5. The weight ratio dilacerating acrylate to oxidation-curable binder component may be, for example, in the range of from 1:0.5 to 1:10.

Moreover, the coating composition may contain one or more dobova is or auxiliary components, such as pigments, dyes, fillers, antioxidants, antiozonants, matting agent, a dispersant of the pigment, UV stabilizers, co-solvents, dispersing agents, surfactants, inhibitors, fillers, antistatic agents, plantamajoside tools, lubricants, antifoams, diluents, plasticizers, anti-freezing agents, thixotropic agents, wetting, steric employed amines, bactericides, fungicides, anti-education film on the surface, perfumes, antifoams, stabilizers, drying and waxing. If desired, a thickening agent used in the coating compositions according to the present invention, such as associative thickener, such as associative polyurethane thickeners. Examples include Polyphobe 9823 from the company Union Carbide, Acrysol RM 2020 and Acrysol RM8 from the company Rohm & Haas, Bermodol PUR2130 from the company Akzo Nobel, Rheo 2000 and Coapur 5035 from the company Coatex, Tafigel PUR 40 and Tafigel PUR 45 from the company Munzing, Serad FX1035 and FX 1070 from the company Servo, and Optiflo L100 L120 and from the company Ashland Südchemie. For example, up to 10% by weight (dry calculated on solid resin) of thickener can be used in coating compositions, for example, from 1 to 10% by weight, or from 2 to 5% by weight.

Applicable pigments, for example, are natural or synthetic pigments, which may be transparent or opaque. Examples of suitable pigments include Diocletian, iron oxide red, orange micaceous iron, yellow micaceous iron, phtalocyanine blue, phtalocyanine green, molybdenum red, chromium titanate, and natural pigments, such as ochre, glauconites, umber and burnt or raw Sienna.

Coating compositions can be applied onto a substrate by any suitable method, for example using a roller, spray, brush application, nabrasyvaniem, watering or dipping. The composition, for example, can be applied by brush, spray or roller.

Suitable substrates include metals or synthetic materials, wood, concrete, cement, brick, paper, or leather, all of which can be subjected to pre-treatment or pre-painted. The coating can be overiden best at a temperature of, for example, 0-40°C. optionally, can be applied to the curing temperature above 40°C, which may be reduced curing time. Coating composition can be used as a translucent or opaque primer or paint for decorative purposes. Coating composition according to the invention, for example, is particularly suitable as a paint for interior decoration.

Further, the invention is illustrated by the following examples. In the examples, the following methods were used test the simulation. Covering capacity was tested according to DIN 55987 and DIN ISO 6504-3. About the rheological properties were judged visually by the layers applied by roller and brush 1/2 qm chart coverage (EN 4628/1). The retention period for the technological properties of the composition after preparation was visually determined in the test for abrasion (finger) pulling 150 ám films at the charts coverage with a two-minute intervals, estimating the offset grated places (EN 4628/2).

Example 1

The paint was prepared by mixing the following components:

4 weight parts of water

of 0.3 weight parts ammonia

7 weight parts of glycol cosolvent

1 weight part of Disperbyk®190

3 weight parts of a thickener (Acrysol® RM-2020)

of 0.3 weight part of protivovospalitel

1 weight part of rheology modifier

24 weight parts of titanium dioxide

4 weight parts of calcium carbonate as filler

21 the weight of the acrylic resin emulsion

of 8.5 parts by weight of dispersed acrylic resin

25 parts by weight of the emulsion of an alkyd resin with an average oil content

0.5 wt parts of wetting

of 0.7 weight part of desiccant

of 0.2 weight part of the deaerator

The retention period for the technological properties of the composition after preparation was as good as for standard acrylic paints for the interior Department is the CTL or standard finishing hybrid agrileasing of water-based paints, despite a substantially higher solids content of 61% by weight solids).

Spreading when applied by brush and roller were comparable to those for systems based on solvents, which usually have an excellent flow. Even on large flat surfaces such as doors, results spreading were very good.

Wetting, for example, such items as doors, radiators and furniture, painted by the original manufacturer of alkyd paints, solvent-based, very good. Unlike common alkyd or agrileasing hybrid finishing water-based paints, which are often problems associated with namachivayam, such as peeling, rabiza or shrinkage of paint for application by brush and roller and spray application, these defects were not observed when using the paint of this example.

Example 2

The paint is prepared by mixing the following components:

5 weight parts of water

to 0.5 weight parts ammonia

7 weight parts of cosolvent

1 weight part of Disperbyk®190

4 weight parts of associative thickener

of 0.3 weight part of protivovospalitel

1 weight part of rheology modifier

21 weight part of titanium dioxide

5 weight parts of calcium carbonate as filler

21 weight net assets shall be polyurethane, modified acrylate (NeoPac® E125)

9 parts by weight of dispersed acrylic resin

28 parts by weight of the emulsion of an alkyd resin with an average oil content

0.5 wt parts of wetting

of 0.7 weight part of desiccant

Example 3

The paint is prepared by mixing the following components:

of 0.1 weight parts ammonia

6.5 weight parts of cosolvent

to 0.4 weight parts surfactant

of 3.8 weight parts of associative thickener

0.5 wt parts of protivovospalitel

16 parts by weight of fillers

20 parts by weight of titanium dioxide

21 weight part emulsified acrylate (Neocryl® XK-98)

9 parts by weight of dispersed acrylic resin (Joncryl® 8004)

to 22.5 parts by weight of the emulsion of an alkyd resin with an average oil content (Resydrol® AF 6111)

0.5 wt parts of wetting

0,65 weight parts of desiccant

The paint showed excellent hiding power, which was about 25% better than standard acrylic finishing paint, and excellent shading. Rheological properties and time saving technological properties of the composition were very good.

1. Aqueous coating composition, including:
water;
oxidation-curable resin, where the specified resin is an alkyd resin;
at least 1.5% by weight of the composition and unstructured dilacerating acrylate, having a mass-average molecular weight Mw of 200,000 g/mol or less and an acid number of at least 15 mg KOH/g; and
emulsified second acrylate.

2. Coating composition according to claim 1, where the oxidation-curable resin is an alkyd-urethane resin.

3. Coating composition according to claim 1, characterized in that the content dilacerating acrylate is at least 3% by weight, for example at least 4.5 percent by weight.

4. Coating composition according to any one of claims 1 to 3, characterized in that the acid number of dilacerations acrylate is at least 65 mg KOH/g, for example 70 mg KOH/g

5. Coating composition according to claim 1, characterized in that the second acrylate has a Mw of at least 300000 g/mol.

6. Coating composition according to claim 5, characterized in that the second acrylate is stitched, for example, azomethine linking links.

7. Coating composition according to claim 6, characterized in that the second acrylate comprises a carbonyl group.

8. Coating composition according to claim 1, characterized in that the weight ratio dilacerating acrylate to the second emulsified the acrylate is in the range from 1:0.5 to 1:5.

9. Coating composition according to claim 1, characterized in that the weight ratio dilacerating acrylate to oxidation-curable resin is in the range from 1:0.5 to 1:10.



 

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Building board // 2405798

FIELD: construction.

SUBSTANCE: board base represents one of the following boards with coat film on the basis of acrylic resin on surface: cement board with addition of wood reinforcing material, extruded cement board, cellulose-cement board, gypsum board, calcium silicate board, magnesium carbonate board, cement board. Protective layer, which does not contain resins, is formed on surface of coat film. Protective layer is formed by application of processing solution, containing colloid silica, carbodihydraside, water, alcohol, surfactant. Colloid silica of protective layer consists of secondary particles formed by combination of several primary particles with size from 5 nm to 10 nm, producing fine relief on its surface, besides in protective layer carbohydraside is retained by this relief and adsorbs on it, on surface of colloid silica. Thickness of protective layer makes from 30 nm to 80 nm. Protective layer used to produce construction board is produced by dispersion of colloid silica in dispersion medium and further addition of aqueous solution of carbodihydraside. Dispersed medium is produced by addition of alcohol to water and contains surfactant.

EFFECT: highly efficient and durable function of aldehydes absorption.

5 cl, 2 tbl, 6 ex

FIELD: chemistry.

SUBSTANCE: invention can be used in the paint industry for painting different surfaces (wood, concrete, brick etc), particularly in water paint for interior decoration of facilities with high humidity (vegetable stores, pools, toilet facilities etc) and places where there are a lot of people (hospitals, child care centres, metro etc). The water paint biocidal additive contains a schungite-silver nanocomposite in weight ratio schungite: silver equal to 2:1. The additive has high bactericidal activity and is environmentally safe during production and use. The bactericidal effect is more stable in time than in existing additives using nanosilver.

EFFECT: obtaining a schungite-silver nanocomposite with high bactericidal and fungicidal activity and prolonged bactericidal effect.

1 ex

FIELD: chemistry.

SUBSTANCE: invention relates to preparation of surface coating solutions which contain boehmite. The surface coating solution is a latex paint and contains a trituration solution, a polymer emulsion and a solvent. The trituration solution is prepared using an active solution which contains a base in form of an aqueous solution and boehmite particles contained in the base. The boehmite particles are anisotropic moulded particles having mould ratio of 3:1 and are activated by substances selected from a group which includes ammonium hydroxide, alkali- or alkali-earth metal salt, nanoclay or colloidal silica. The surface coating solution has surface spreading and distribution with formation of a uniform film of at least 6 mil, and sag resistance of over 7 mil or surface spreading and distribution with formation of a uniform film of over 6 mil, and sag resistance of at least 7 mil. Described also is a method of preparing the surface coating solution involving the following operations: activation of boehmite particles with substances selected from a group which includes ammonium hydroxide, alkali- or alkali-earth metal salt, nanoclay or colloidal silica in order to form a water-based active solution; preparation of a trituration solution using the active solution; and preparation of a surface coating solution using the trituration solution, polymer emulsion and solvent.

EFFECT: solution enables to obtain coating with good technical properties.

42 cl, 2 tbl, 3 dwg, 2 ex

FIELD: chemistry.

SUBSTANCE: present invention relates to a coating compositions. The coating composition contains a thermally crosslinking film-forming resin binder or resin binders, a polymer or copolymer levelling agent having molecular weight between 1000 and 100000 g/mol (Da). The polymer or copolymer levelling agent is obtained through polymerisation in the presence of an alkoxyamine initiator/regulating compound or monomer. The monomer is selected from a group of acrylate or methacrylate compounds. The said copolymer levelling agent is obtained from a composition which contains an ethylene-unsaturated monomer. The polymer levelling agent used is poly-tert-butyl acrylate or poly-tert-butyl methacrylate. The coating is obtained by depositing the composition onto a substrate and applying heat energy or electromagnetic radiation.

EFFECT: use of the said polymer or copolymer as a levelling agent in coating compositions enables to obtain smooth coating for surfaces.

3 cl, 21 ex, 10 tbl

FIELD: chemistry.

SUBSTANCE: description is given of a polymerisation-capable stabilised adhesive composition made from two parts, containing an organoboron compound in one part, capable of forming compounds which form free radicals, which contains a complex of organoborane and amine or organoborate salt, one or more compounds, capable of free-radical polymerisation, and one or more compounds, containing dihydrocarbylhydroxylamine. In the other part the composition contains one or more compounds, capable of free-radical polymerisation, and a decomplexing agent, capable of converting organoboron compound into a compound which forms free radicals when the two parts are brought into contact. Description is also given a polymerisation method, involving bringing into contact the above mentioned composition, capable of polymerisation, as well as a method of linking two or more compounds, which involves: combined contacting of components of the above mentioned composition, under such conditions that, polymerisation is initiated; bringing the composition into contact with two or more compounds; arranging two or more compounds such that, the composition is localised between the two or more compounds, which are in contact with each other; and solidification of the composition so as to join two or more compounds.

EFFECT: design of a stabilising composition, containing compounds which are polymerised by free-radical polymerisation, where an organoboron compound is present.

5 cl, 4 tbl, 2 dwg, 16 ex

FIELD: chemistry.

SUBSTANCE: coating means is proposed, containing: A) 1 to 30 wt % of prepolymer, obtained by radical polymerization of mixture comprising of: A1) 1 to 10 wt % at least one sulphurous compound having at least three thiol groups, and A2) 90 to 99 wt % alkyl(meth)acrylates; B) 0.2 to 10 wt % at least one fluoralkyl(meth)acrylate having 3 to 30 carbon atoms in alcohol residue and including 6 to 61 fluorine atoms; C) 20 to 80 wt % polyfunctional (meth)acrylates; D) 0.01 to 10 wt % at least one initiator; E) 2 to 75 wt % at least one thinner; and F) 0 to 40 wt % common additives. Also, formed piece including polymer substrate and scratch-proof covering is proposed, as well as method for its production that consist in coating means applying on polymer substrate followed by hardening.

EFFECT: scratch-proof covering with dirt-repellant effect.

20 cl, 1 tbl, 1 ex

FIELD: chemistry.

SUBSTANCE: invention relates to impregnation and hermetisation of porous products with thermally hardened compositions based on (meth)acrylic monomers. Claimed is thermally hardened composition for impregnation and hermetisation of porous products, containing (in mass fraction): 100 (meth)acrylic monomer, 0.1-0.5 nitronitrile, 0.01-0.04 hydrohynone, 0.004-0.03 disodium salt of ethylendiaminetetraacetic acid, 0.001-0.03 2,2,6,6-tetramethyl-4-oxopiperidin-1-oxyl and 0.5-5.0 non-ionogenic emulsifying agent. Method of impregnation and hermetisation of porous products includes their vacuum processing with further impregnation under vacuum and atmospheric pressure with abovementioned composition and hardening at temperature ≥90°C. Thermally-hardened composition has higher serviceability and allows to increase productivity of impregnation and hermetisation method essentially.

EFFECT: increasing productivity of method of impregnation and hermetisation of porous products by means of thermally-hardened compositions.

2 cl, 1 tbl, 15 ex

FIELD: transportation.

SUBSTANCE: proposed coating includes a lower layer of an aluminum alloy anodic oxide coating and an upper layer representing a thermo regulating paint coat comprising acrylate holmium-containing vanish "АКГ-1,2" (42-38 percent by weight) and oxide-modified zirconium (IV), 7-4 (58-62 percent by weight). The coating features low solar radiation absorption factor values (As ≤ 0,10-0,11) and high radiation factors (ε≥0,92-0,94). This allows reducing the radiator-emitter area which is particularly important in development of promising spacecrafts. Availability of two thermoregulating coatings, i.e. the anodic oxide and paint coatings allows a notable increase in service life of the said radiators and producing the said coatings on the surface of products made from aluminum or its alloys with lower As/ε parameter values and without drawbacks inherent in silicate coatings.

EFFECT: antirust protection of complicated-design structures and provision of preset thermal-and-radiation characteristics.

2 tbl

FIELD: chemistry.

SUBSTANCE: composition for coating of optical transparent information carriers is described, the composition being curable by UV radiation and including (A) from 1 to 60% by mass of at least one colloid oxide of metal, (B) from 0.1 to 50% by mass of at least one silyl acrylate hydrolysis product having a general formula (I): , (I) where a means an integer from 0 to 2, b means an integer from 1 to 3, and the sum a+b is from 1 to 3, R independently means non-branched or branched alkyl residue with 1 to 8 carbon atoms, cycloalkyl residue with 3 to 8 carbon atoms, unsubstituted or substituted aryl residue with 6 to 10 carbon atoms in the aryl portion, R1 independently means hydrogen, non-branched or branched alkyl residue with 1 to 8 carbon atoms, cycloalkyl residue with 3 to 8 carbon atoms, unsubstituted or substituted aryl residue with 6 to 10 carbon atoms in the aryl portion, R2 independently means hydrogen, non-branched or branched alkyl residue with 1 to 8 carbon atoms, unsubstituted or substituted aryl residue with 6 to 10 carbon atoms, R3 means single bond, or non-branched or branched, if necessary, substituted alkylene residue (alkane dienyl residue) with 1 to 8 carbon atoms in alkylene residue, or, if necessary, substituted arylene residue (aryl dienyl residue) with 6 to 10 carbon atoms in arylene residue, (C) from 25 to 90% by mass of at least one acrylate monomer of general formula (II) where n means a number from 1 to 6, R4 means hydrogen, non-branched or branched alkyl residue with 1 to 8 carbon atoms, unsubstituted or substituted aryl residue with 6 to 10 carbon atoms in the aryl portion and where substituents R4 may be the same or different; R5 means unsubstituted or substituted organic residue having a valency from 1 to 6 such as, if necessary, substituted, non-branched or branched aliphatic or aromatic hydrocarbon residue with 1 to 20 carbon atoms, and (D) from 0.01 to 15% by mass of at least one UV photoinitiator, respectively, with respect to the total mass of the composition, the composition being intended for coating transparent, polycarbonate-based, optical information carriers.

EFFECT: proposed composition is scratch-resistant and highly adhesive to the substrate surface.

3 cl, 2 tbl, 4 ex

FIELD: organic chemistry, chemical technology.

SUBSTANCE: invention relates to photoinitiating agents of phenylglyoxylic acid order used in polymerizing compositions to be subjected for hardening. Invention describes a photoinitiating agent of the formula (I): wherein Y means (C3-C12)-alkylene, butenylene, butinylene or (C4-C12)-alkylene that are broken by groups -O- or -NR2- and not following in sequence; R1 means a reactive group of the following order: -OH, -SH, -HR3R4, -(CO)-OH, -(CO)-NH2, -SO3H, -C(R5)=CR6R7, oxiranyl, -O-(CO)-NH-R8-NCO and -O-(CO)-R-(CO)-X; R2 means hydrogen atom, (C1-C4)-alkyl, (C2-C4)-hydroxyalkyl; R3 and R4 mean hydrogen atom, (C1-C4)-alkyl, (C2-C4)-hydroxyalkyl; R, R and R mean hydrogen atom or methyl; R8 means linear or branched (C4-C12)-alkylene or phenylene; R9 means linear or branched (C1-C16)-alkylene, -CH=CH-, -CH=CH-CH2-, C6-cycloalkylene, phenylene or naphthylene; X, X1 and X2 mean -OH, Cl, -OCH3 or -OC2H5. Also, invention describes a method for synthesis of a photoinitiating agent, polymerizing composition and substrate covered by its. Proposed photoinitiating agent possesses the effective introducing capacity and absence of migration in thermal treatments.

EFFECT: improved and valuable properties of agent.

13 cl, 1 tbl, 16 ex

FIELD: rocketry; production of the potting composition for armoring the charge made out of the ballistite propellant.

SUBSTANCE: the invention is pertaining to the field of rocketry and presents the potting composition for armoring the charge made out of the ballistite propellant. The potting composition includes polybutylmethacrylate, butylmethacrylate, methylmethacrylateand in the capacity of the initiator and activator of the hardening - benzoyl peroxide and dimethylaniline. At that polybutylmethacrylate is dissolved in the mixture of butylmethacrylate and methylmetacrylate. The invention ensures manufacture of the qualitative products with the required level of the physical-mechanical and adhesive properties, as well as to reduce smokiness of the gases, and to reduce temperature of the waste gases from 2200°С to 800°С.

EFFECT: the invention ensures manufacture of the qualitative products with the required level of the physical-mechanical and adhesive properties, as well as to reduce smokiness of the gases, and significantly to reduce temperature of the waste gases.

2 tbl

Composition makeup // 2277552

FIELD: polymer materials.

SUBSTANCE: invention relates to polymer composition based on binder, namely unsaturated polyether resin or oligoether acrylates, and may be used in medicine, in production of paint and lacquer materials, etc. Composition comprises, wt parts: unsaturated polyether resin or oligoether acrylates or mixtures thereof, 100; polymerization promoter, in particular complex compound prepared by reaction of vanadium derivatives (vanadium pentoxide, ammonium methavanadate, of methavanadic acid) with orthophosphoric acid/water/butanol mixture, 0.3-0.88; polymerization initiator: cumene hydroperoxide, 0.3-0.44; and modifying additives, 0-20.

EFFECT: optimized makeup involving inexpensive, easily available, and highly efficient promoter.

1 tbl, 6 ex

FIELD: organic chemistry, chemical technology.

SUBSTANCE: invention proposes a method for preparing vinylene carbonate mixture. Method involves interaction of monohaloethylene carbonate of the formula (II): wherein X means halogen atom with a dehydrohalogenating agent at temperature in the range 40-80°C but preferably at 60°C in organic solvent medium wherein ethylene carbonate is used as an organic solvent. As a dehydrohalogenating agent method involves using amine, in particular, trialkylamine but preferably triethylamine, and monochloroethylene carbonate is used as monohaloethylene carbonate preferably. Interaction is carried out in inert gas atmosphere preferably. Invention provides preparing vinylene carbonate mixture by a simple and economy method with the high content of vinylene carbonate in the end product. Method provides easily isolation of vinylene carbonate from the prepared mixture by distillation off, for example, under vacuum in the film evaporator. Also, invention relates to a crude vinylene carbonate mixture prepared by above described method that is designated as an additive for lithium-ionic batteries as a component of surface coating material as a monomer for preparing polyvinylene carbonate.

EFFECT: improved preparing method.

7 cl, 3 ex

The invention relates to stable spatial agents for bonding obtained using the gel-forming condensation products of aldehydes or ketones with polyhydric alcohols and cyanacrylate

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

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