Abstract: Aqueous, heat-curable coating compound containingfrom 38.5 to 80% by weight of one or more film-forming copolymers and/or cocondensates which are emulsifiable in water or rendered water soluble by neutralisation with bases, having a number average molecular weight (Mn) of from 800 to 10,000, a hydroxyl number of from 60 to 390 and an acid number of from 15 to 60,B) from 0 to 25.5% by weight of one or more polyester oligomers having a calculated molecular weight of from 200 to 1000, a hydroxyl number of from 280 to 600 and an acid number of from 0 to 1.5,C) from 3.5 to 40% by weight of one or more amine resin cross-linking agents andD) from 0.5 to 28% by weight of one or more masked polyisocyanates,the percentages by weight of components A) to D) being based in each case on the solids contents by weight of the resins and adding up to 100% by weight,and water and optionally one or more organic solvents, pigments, fillers and/or the conventional auxiliary agents and additives used in lacquers.

Abstract: Coating agents are described, that are suitable for the production of pigmented or transparent top coatings, based on hydroxy-functional (meth)acrylic copolymers, aliphatic and/or cycloaliphatic polyisocyanates, solvents, and customary lacquer additives and pigments. They are free from epoxy resins and nitrocellulose and contain as binderA) one or more (meth)acrylic copolymers, containing hydroxyl groups, froma1) 47-53 wt % of one or more aromatic vinyl compounds,a2) 28-33 wt % of one or more hydroxyalkyl methacrylates,a3) 14-19 wt % of one or more alkyl (meth)acrylates, anda4) 0.5-2 wt % acrylic acid and/or methacrylic acid,with a hydroxyl number of 120-160 mg KOH/g, an acid number of 5 to 15 mg KOH/g, a weight-average molecular weight of 10,000 to 20,000 and a glass transition temperature of +40.degree. C. to +60.degree. C., andB) an aliphatic and/or cycloaliphatic polyisocyanate or a mixture of such polyisocyanates in such an amount that 0.5 to 2.

Abstract: A binder composition, a coating composition containing this binder, a process for its production and use to produce single or multi-layer lacquer coatings, particularly in the automotive sector, are described. The binder composition containsA) 25 to 75 wt. % of one of more resins containing carboxyl groups, which may contain .alpha.,.beta.-unsaturated groups, with a number average molecular weight (Mn) of 500 to 10000 g/mol and an acid value of 15 to 200 mg KOH/g,B) 25 to 75 wt. % of one or more polyethers, polyesters, polyether/polyesters and/or (meth)acrylic copolymers with at least one .alpha.,.beta.-unsaturated group and at least one epoxy group per molecule, wherein the .alpha.,.beta.-unsaturated groups and epoxy groups are present in a numerical ratio of 20:80 to 80:20, with a number average molecular weight (Mn) of up to 10000 g/mol,C) 0 to 60 wt. % of one or more polyols with at least two hydroxyl functional groups per molecule,D.sub.1) 0 to 20 wt. % of one or more melamine resins,D.sub.2) 0 to 40 wt.

Abstract: The present invention is directed to a coating composition for use as topcoat lacquer on a multi-layer lacquer coating for substrates such as automobile bodies and parts. The coating composition is based upon a combination of hydroxyl-functional methacrylic copolymers, carboxy-functional blocked urethane prepolymers, crosslinking agents and optional hydroxyl-functional polyesters. The carboxy-functional polyurethane prepolymer is formed from a combination of organic diols, polycarboxylic acids, polyols, hydroxyl-carboxylic acids, aliphatic or aryl polyisocyanates and monofunctional isocyanate blocking agents. The lacquer coating according to the invention has a high sulfuric acid resistance and has a high solids content.

Abstract: A binder composition, a coating composition containing this binder, a process for its production and use to produce single or multi-layer lacquer coatings, particularly in the automotive sector, are described. The binder composition containsA) 25 to 75 wt. % of the reaction product of one or more carboxy-functionalised poly(meth)acrylic copolymers and/or one or more carboxy-functionalised polyesters, each with an acid value of 15 to 200 mg KOH/g, with one or more lactones,B) 25 to 75 wt. % of one or more epoxy-functionalised crosslinking agents with at least two epoxy functional groups per molecule, with a number average molecular weight (Mn) of 200 to 10000 g/mol,C) 0 to 60 wt. % of one or more polyols with at least two hydroxyl functional groups per molecule,D.sub.1) 0 to 20 wt. % of one or more melamine resins,D.sub.2) 0 to 40 wt. % of one or more capped polyisocyanates, wherein the sum of the weight percentages of components A), B), C), D.sub.1) and D.sub.2) is 100 wt. %, together withE) 0 to 10 wt.

Abstract: A solvent based coating composition containing a binding agent, the binding agent comprising: (a) 10 to 80 wt.% of at least one hydroxyfunctional polyester formed by reacting a mixture comprising: (i) 10 to 40 mol.% of a 2,2-dialkylalkanediol with two primary OH groups; (ii) 10 to 30 mol.% of a polyol with at least one secondary OH group; (iii) 20 to 50 mol.% of an aliphatic or cycloaliphatic dicarboxylic acid with fewer than 16 C atoms or anhydrides thereof; (iv) 5 to 30 mol.% of a compound selected from the group consisting of dimeric fatty acids, dimeric diols, epsilon-caprolactone, and mixtures thereof; (v) 1 to 15 mol.% of a hydroxycarboxylic acid with at least one hydroxy group and at least one carboxyl group; and (b) 10 to 80 wt.% of a (meth)acrylic copolymer containing a hydroxyl group; and (c) 10 to 60 wt.% of a crosslinking agent; wherein the sum of the wt.% of components (a)-(c) is 100% of the binding agent.

Abstract: A non-aqueous dispersion containing, in addition to organic solvents,A) from 15-85% by weight of a dissolved film-forming component of hydroxyl group- and carboxyl-group containing polyesters, (meth)acrylic copolymers or mixtures thereof in which up to half the molecules may be esterified with 1 molecule of maleic acid each, andB) from 15-85% by weight of a disperse phase of uncross-linked (meth)acrylic copolymers having a hydroxyl number of at least 300, obtainable by the radical polymerization ofa) from 80-100% by weight of hydroxyalkyl (meth)acrylates andb) from 0-20% by weight of other .alpha.,.beta.-monounsaturated monomers in the dissolved film-forming component.

Abstract: A transparent coating agent which is free of heavy metal catalysts and which contains a hydroxy functional (meth)acrylic copolymer based binder, an aliphatic or cycloaliphatic polyisocyanate crosslinking agent, a solvent, and lacquer adjuvant.

Abstract: Coating composition containing one or several (meth)acrylic copolymers having hydroxyl groups, as well as one or several solvents and, optionally, water, special-effect pigments and/or coloring pigments, fillers and/or conventional lacquering additives, whereby the (meth)acrylic copolymer is essentially constructed from units based on the following monomers:a) 0.5-10.0% by weight of amides and/or N-substituted amides of acrylic acid and/or methacrylic acid,b) 5.0-30.0% by weight of phenylalkyl esters of acrylic acid and/or methacrylic acid,c) 10.0-30.0% by weight of hydroxyalkyl esters of acrylic acid and/or methacrylic acid having 2-8 C-atoms in the hydroxyalkyl residue,d) 0.6-7.5% by weight of acrylic acid and/or methacrylic acid, ande) 30.0-83.9% by weight of alkyl esters of acrylic acid and/or methacrylic acid having 1-18 C-atoms in the alkyl residue, andwhereby the sum of components a) to e) amounts in each case to 100.

Abstract: A coating material is described which exhibits high resistance to chemicals and is emulsifier-free. The coating material is useful as a lacquer layer coating on metallic substates such as automobiles. The coating material is based upon a polyester oligomer/polyacrylate wherein the polyacrylate contains hydrophilic and hydrophobic portions and the polyester contains hydroxyl functions. Capped polyisocyanates are also included in the coating material.

Abstract: A binding-agent composition for coating agents which can be cured at low temperature contains:A. 4-72% by weight of an acidic CH-compound, obtained by transesterification of an aliphatic .beta.-ketocarboxylic acid ester with one or several monomers and/or polymers containing hydroxyl groups and which contain at least two hydroxyl groups in the molecule,B. 4-72% by weight of an .alpha.,.beta.-unsaturated compound with at least two groups of the general formulaR.sub.1 R.sub.2 C.dbd.CR.sub.3 --CO--attached via the residue of a divalent or polyvalent alcohol, a diamine or polyamine or amino alcohol to at least one additional R.sub.1 R.sub.2 C.dbd.CR.sub.3 --CO--group, where R.sub.1, R.sub.2 and R.sub.3 independently of each other are a hydrogen atom or a straight or branched alkyl residue with 1 to 10 carbon atoms,C. 10-80% by weight of one or several polyamines with, by way of curing agents, at least two amine functions, which can be primary and/or secondary and can be blocked, in the molecule, andD. 0.

Abstract: Previous two-component coatings with enamine components cured very slowly at low temperatures and led to yellowed products. A binder composition is prepared which cures rapidly at low temperatures and leads to non-yellowing products. It contains as CH-acid component a polymer with at least two enamine functions in the molecule, obtained byA) transesterification of a .beta.-keto-ester with hydroxyl-group-containing compounds or polymers which contain at least two hydroxyl groups in the molecule, with an OH value of at least 50 and a number-average molecular weight of 500 to 10,000, followed by reaction with ammonia or primary and/or secondary amines, andB) as .alpha.,.beta.-unsaturated component a compound with at least two groups of the general formula R.sub.1 R.sub.2 C.dbd.CR.sub.3 --X; in which X signifies --CO-- which is bonded via the residue of a di- or polyhydric alcohol, a di- or polyamine or an aminoalcohol to a further R.sub.1 R.sub.2 C.dbd.CR.sub.3 --X group, where R.sub.1, R.sub.2 and R.sub.

Abstract: A binding-agent composition for solvent-based or aqueous coating agents can be cured at low temperature to produce coatings which are non-yellowing and resistant to solvents. The binding-agent composition contains binding-agent components based on polyethers, polyesters, polyether polyesters and/or (meth)acrylic copolymers with, in each case, at least one acryloyl group and at least one epoxide group in the molecule, whereby the acryloyl groups and epoxide groups are present in the ratio 2:8 to 8:2. Also included are several polyamines as curing agents in a proportion of equivalent weights ranging from 2:0.5 to 1:1.5. The binding agents are used in pigmented and pigment-free lacquers, for use particularly in multi-layer lacquering.

Abstract: A binder composition suitable for coating agents is described, that contains one or more unsaturated polyesters with an acid number of 5-60 mg KOH/g, a hydroxyl number of 50-200 mg KOH/g and a weight-average molecular weight (Mw) of 500-3000 g/mol, that are obtainable by reaction ofA) one or more alpha,beta-ethylenically unsaturated dicarboxylic acids or their anhydrides,B) one or more hydroxy-functional allyl ethers andC) one or more ethylenically unsaturated compounds with an oxirane group in the molecule,in the molar ratio of A):B):C)=(2 to 4):(2 to 4):(0.5 to 1.8). The composition is suitable in particular for filling putties and filling compounds that dry rapidly, even at low temperatures.

Abstract: A process for priming of plastic substrates without adverse effects on the mechanical stability by applying to a plastic substrate, particularly a polyolefin substrate, a coating composition which comprises from 10 to 35% by weight of binders having an OH number of from 40 to 150, prepared from (meth)acrylamides, hydroxyalkyl (meth) acrylates and copolymerisable, olefinically unsaturated compounds with subsequent modification by means of polyisocyanates, up to 20% by weight of further binders, from 30 to 70% by weight of organic solvents, from 15 to 45% by weight of pigments and/or fillers, from 0 to 15% by weight of additives and from 1 to 30% by weight of epoxide- or polyisocyanate-based crosslinking agents.

Abstract: A rheology-influencing agent for coating media, containing a mixture of a (meth)acrylic copolymer containing hydroxyl groups and/or one or more polyesters containing hydroxyl groups, a hydroxy functional microdispersion obtainable by preparing a solution of one or more film-forming polyesters containing hydroxyl and/or carboxyl groups and/or (meth)acrylic copolymers containing hydroxyl and/or carboxyl groups, the foregoing mixture being reacted with a diisocyanate, and an aliphatic primary monoamine.

Abstract: The invention concerns a binder suitable for clear or pigmented coating agents. Binders based on copolymers containing hydroxyl groups have hitherto a high solvent content. The solids content of the new binders is improved without affecting the viscosity; gloss, body, flow and processing properties of coatings containing the new binders are improved. The binders consist essentially of a copolymer containing hydroxyl groups, made from specific quantities of styrol, tertbutacrylate, isobutyl methacrylate, 2-ethylhexyl methacrylate, 2-hydroxypropyl methacrylate, butanediol-1, 4-monoacrylate, acrylic acid and glycidyl esters of .alpha.-alkylalkane monocarboxylic acids and/or .alpha.,.alpha.-dialkylalkane monocarboxylic acids.

Abstract: Aqueous heat-curable coating substances in a polyester and acrylic resin base and a process for their manufacture. The new coating substances are usable as aqueous, heat-curable coatings and as clear varnish coating substances. The new heat-curable aqueous coating substances contain as binding agents 20 to 45%/weight of an amine resin cross-linking agent and 80 to 55%/weight of a polyester oligomer polyacrylate which is water-soluble following neutralization with bases and has a hydroxyl value of 150 to 390 and an acid value of 16 to 40, manufactured by the radical polymerization of a hydroxyfunctional (meth) acrylic acid ester, a monofunctional ethylenically unsaturated acid and, if required, an .alpha., .beta. ethylenically unsaturated monomer with no functional groups, in a polyester oligomer.

Abstract: Non-autocross-linking binder compositions for water dilutable lacquers are described which comprise components (A), 94 to 40% by weight of a water-dilutable ionic poly(meth)acrylate resin containing hydroxyl groups, (B), 1 to 10% by weight of a special copolymer to facilitate grinding, and (C), 5 to 50% by weight of a cross-linking agent. Aqeuous coating compositions containing the non-autocross-linking binder compositions and methods for using the water dilutable lacquers containing this binder compositions for cathodically or anodically coating electrically conductive objects are also described.

Abstract: Previous coating materials lead to the formation of bubbles at high layer thickness and when drying by heating. The new coating materials are intended to be bubble-free when dried at higher layer thicknesses.Aside from pigments and/or extenders, the coating material contains solvents and, if necessary, conventional paint auxiliaries in a vehicle mixture, comprising essentially 60-75% by weight of a hydroxy-functional copolymer, 1-5% by weight of an ester-soluble nitrocellulose and 25-35% by weight of difunctional or multifunctional polyisocyanate. It can be cured without forming bubbles even when applied in thick layers.Use as primer and filler.