Abstract: The invention relates to paints comprising(i) a resin (A) which contains hydroxyl groups and .alpha.,.beta.-unsaturated carbonyl groups or a mixture of such resins, and/or(ii) a mixture consisting ofa) a hydroxyl-containing resin (B) or a mixture of such resins andb) a crosslinking agent (C) which contains .alpha.,.beta.-unsaturated carbonyl groups or a mixture of such crosslinking agents and(iii) a catalyst (D) which catalyzes the reaction of hydroxyl groups with .alpha.,.beta.-unsaturated carbonyl groups or a mixture of such catalysts.The invention is characterized in that the catalyst (D) is a Bronsted acid.

Abstract: Polymeric reaction products are obtained by reactingI) prepolymers obtained fromA) polyoxyalkylenes which have an average molecular weight M.sub.n of from 140 to 10,000 and contain on average from 1.5 to 3.0a.sub.1) primary or secondary amino groups ora.sub.2) epoxy groups per molecule andB) polymers which are based on conjugated dienes, have an average molecular weight M.sub.n of from 250 to 50,000 and contain on average from 1.5 to 3.0b.sub.1) primary or secondary amino groups orb.sub.2) epoxy groups per molecule, the components (a.sub.1) and ( b.sub.2) or (a.sub.2) and (b.sub.1) being reacted with one another so that from at least an amino equivalent excess to 3 amino equivalents of component (a.sub.1) or (b.sub.1) are present per epoxide equivalent of component (a.sub.2) or (b.sub.2), withII) at least one compound which forms free radicals.

Abstract: The invention relates to a process for the production of a multicoat finish, in which an aqueous basecoat is used which contains as binder a polymer which can be obtained by polymerizing in an organic solvent(A) ethylenically unsaturated monomers in the presence of(B) a polyurethane resin containing polymerizable double bondsand converting the resultant reaction product to an aqueous dispersion.

Abstract: In solutions of polyimide-forming starting materials, containing diamines and tetracarboxylic diesters, at least 2 mol % of the ester groups in the tetracarboxylic diesters are derived from alcohols of the general formulaHO--Z--O--X IorHO--Z--X IIwhere Z is a straight-chain or branched aliphatic radical of from 1 to 15 carbon atoms which can be interrupted by from 1 to 4 ether groups --O-- and X is an aromatic radical of from 5 to 20 carbon atoms which can also contain nitrogen, oxygen or sulfur as hetero atoms in the aromatic ring system, excepting benzyl alcohol as compound of the formula II in the case of the use of diamines having a basicity constant of less than or equal to 10.sup.-11.

Abstract: Curable composition based on branched acrylates with COOH groups and/or branched acrylates with epoxide groups, and aminoplast resins.The present invention relates to a curable composition consisting ofA) a polymer with at least 2 COOH groups,B) a polymer with at least 2 epoxide groups andC) an aminoplast resin.At least one of components A) or B) is based on a branched soluble acrylate copolymer, more than 3 to 30% by weight, based on the total weight of the monomers, of a monomer with at least two polymerizable, olefinically unsaturated double bonds being used in the preparation of these branched acrylate copolymers and the proportions of the individual components relative to one another being chosen so that a molar ratio of 3:1 to 1:3 prevails between the carboxyl groups of component A) and the epoxide groups of component B) and a weight ratio of 65:35% by weight to 98:2% by weight prevails between the epoxy resin component and the aminoplast resin component.

Abstract: The present invention relates to coating agents based on hydroxyl-containing binders and isocyanate-containing crosslinking agents, in which coating agentsI.) the binder comprisesA1) 5 to 80% by weight of at least one polyester or one alkyd resin having an OH number from 0 to 200 mg of KOH/g and an acid number from 0 to 200 mg of KOH/g,A2) 95 to 20% by weight of at least one polyacrylate having an OH number from 30 to 250 mg of KOH/g and an acid number from 0 to 50 mg of KOH/g,the sum of the weight proportions of components (A1) and (A2) being in each case 100% by weight, andII.) the binder is obtainable from1.) at least one polycondensation resin whose acid component comprises 5 to 100 mol % of cycloaliphatic polycarboxylic acids and/or esterifiable derivatives thereof,2.) at least one polyacrylate, at least some of which has been prepared in the presence of the polycondensation resin obtained in the first process step and3.

Abstract: The invention relates to a cathodic electro-dipping process wherein the electro-dipping primer employed contains a crosslinking agent which can be obtained by(I) reacting, in a first stage,(a) diphenylmethane diisocyanate and(b) a monoalcohol or a mixture of monoalcohols to give an intermediate product (A) containing isocyanate groups, and(II) reacting this intermediate product (A) in a second stage with(c) a polyol or a mixture of polyols to give an intermediate product (B) containing hydroxyl groups which(III) is reacted in a third stage either with(d) a cycloaliphatic, aliphatic or araliphatic polyisocyanate or a mixture of such polyisocyanates and(e) a monofunctional masking agent or a mixture of such masking agents or with(f) a partially-masked polyisocyanate prepared from (d) and (e)to give a crosslinking agent which is free from isocyanate groups.

Abstract: In order to increase the stone chip resistance of automobile finishes aqueous electrocoating paints are used which are produced by the use of a pigment paste which contains as grinding resin an at least partially protonated epoxide-amine adduct which is obtainable by reacting(A) a glycidyl ether of a polyphenol which contains on statistical average at least one epoxide group in the molecule, or a mixture of such glycidyl ethers,(B) a polyglycidyl ether of a polyol which contains on statistical average more than 1.0 epoxide groups in the molecule, or a mixture of such polyglycidyl ethers, and(C) a compound which contains a primary amino group in the molecule or a mixture of such compoundswith each other in such a stoichiometric ratio that an epoxide-amine adduct is obtained in which on statistical average at least 2.

Abstract: The invention relates to copolymers containing hydroxyl groups having a hydroxyl value of 50 to 200 mg of KOH/g and an average molecular weight (number average) of 1500 to 6000, which can be prepared by free-radical solution polymerization at temperatures of 130.degree. to 200.degree. C. of 5 to 25% by weight of vinyl ester monomers, 10 to 50% by weight of vinylaromatic monomers, 10 to 50% by weight of hydroxyalkyl ester monomers and, if desired, other monomers, in which the vinyl ester is initially used and the remaining monomers are added over a monomer addition period which is the same for all monomers as follows:i) The amount of the acrylate monomer added per unit time remains constant.

Abstract: The invention relates to a coating compound which comprises a binder solution containinga) 30 to 70% by weight of a binder,b) 2 to 30% by weight of a crosslinking agent,c) if appropriate, 1 to 7% by weight of neutralization agent,d) 20 to 60% by weight of solvent.

Abstract: A process utilizing a pigmented aqueous basecoat composition which contains as the film-forming material a water-thinnable emulsion polymer. The water-thinnable emulsion polymer is prepared in a two-stage emulsion polymerization. In the first stage a polymer is prepared having a glass transition temperature (T.sub.G1) of +30.degree. to +110.degree. C. In the second stage a mixture of monomers is polymerized in the presence of the polymer prepared in the first stage, which mixture, polymerized on its own, would give a polymer with a glass transition temperature (T.sub.G2) of -60.degree. to +20.degree. C. The hydroxyl value of the emulsion polymer is between 2 and 100.

Abstract: A compound is described that is useful as a dispersant for inorganic pigments and metallic flake pigments in waterborne coatings. The compound comprises a polymeric backbone having a pigment-interactive substituent and a stabilizing substituent.The pigment-interactive substituent has at least one functionality selected from the group consisting of ##STR1## wherein A.sub.1, A.sub.2, A.sub.3, and A.sub.4 are as defined herein. The stabilizing substituent includes the structure ##STR2## wherein D.sub.1, D.sub.2, R.sub.1, R.sub.2, R.sub.3, m, and n are as defined herein.

Abstract: A branched polymer containing silyl groups, a process for the preparation thereof, coating agents based on the polymer, and the use thereof.The invention relates to polymers containing silyl groups, the silyl groups being introduced into the polymer through ethylenically unsaturated monomers of the general formula ##STR1## wherein R.sup.1 =alkyl, aryl, acyl or aralkyl having 1 to 10 carbon atoms,R.sup.2 =an organic radical having a polymerizable double bond,X=a hydrolyzable group, andn=1, 2 or 3.The polymers can be obtained by copolymerization ofa) 0.1 to 40% by weight of the silane monomers (a),b) 5 to 30% by weight, preferably 8 to 25% by weight, of monomers containing at least 2 polymerizable, ethylenically unsaturated double bonds, andc) 30 to 90% by weight of ethylenically unsaturated monomers without groups containing active hydrogen.The invention also relates to moisture-hardening coating agents based on the polymers containing silyl groups.

Abstract: Oxidatively crosslinking essentially isocyanate-free urethane resins, obtainable by reactingA) 100 parts by weight of an ester of(a.sub.1) an aliphatic C.sub.3 -C.sub.8 -alcohol having three or more hydroxyl groups and(a.sub.2) an unsaturated C.sub.8 -C.sub.40 -fatty acid and(a.sub.3) if required, an aliphatic or aromatic polycarboxylic acid of 4 to 20 carbon atoms or an anhydride thereof, in amounts of up to 60% by weight, based on the fatty acid a.sub.2),the ester containing sufficient free hydroxyl groups to correspond to an OH number of 50-150 mg of KOH/g, withB)(b.sub.1) 3-120 parts by weight of C.sub.5 -C.sub.15 -polyhydroxycarboxylic acids having two or more hydroxyl groups and(b.sub.2) 10-100 parts by weight of an aliphatic or cycloaliphatic polyisocyanate or a mixture thereof,at 50.degree.-150.degree. C. in the presence of a nonpolar solvent which is inert to isocyanates, are suitable for use as printing ink components.

Abstract: Use of a mixture of from 5 to 95% by weight of an azidosilane of the formulaN.sub.3 --R.sup.3 --Si--R.sup.1.sub.n (OR.sup.2).sub.3-n Iwhere R.sup.1 is C.sub.1 -C.sub.3 -alkyl, phenyl, benzyl or tolyl, R.sup.2 is C.sub.1 -C.sub.4 -alkyl, C.sub.2 -C.sub.4 -alkoxyalkyl, phenyl or benzyl, R.sup.3 is C.sub.1 -C.sub.8 -alkylene, which may be interrupted by oxygen, sulfur or --(N--R.sup.4)-- in which R.sup.4 is hydrogen, methyl, ethyl or phenyl, and n is 0, 1 or 2, and from 5 to 95% by weight of an aminoalkoxysilane of the formulaH.sub.2 N--R.sup.5 --Si--R.sup.6.sub.m (OR.sup.7).sub.3-m (II)where R.sup.5 is C.sub.1 -C.sub.6 -alkylene, C.sub.5 -C.sub.6 -cycloalkylene or C.sub.5 -C.sub.6 -arylene, each of which may be additionally substituted by one or two C.sub.1 -C.sub.3 -alkyl groups, and R.sup.6 and R.sup.7, independently of one another, are C.sub.1 -C.sub.6 -alkyl or C.sub.5 -C.sub.6 -cycloalkyl, each of which may likewise be additionally substituted by one or two C.sub.1 -C.sub.

Abstract: The invention relates to a hardenable composition containingA) compounds having at least two activated double bonds (I) based on .alpha.,.beta.-unsaturated carbonyl compounds, .alpha.,.beta.-unsaturated carboxylic acid esters or .alpha.,.beta.-unsaturated nitrile groups,B) compounds containing either at least one primary amino group which is blocked by an aldehyde or ketone having not more than 10 C atoms or at least 2 groups which can be hydrolyzed to NH groups, andC) customary additives, if appropriate catalysts, if appropriate pigments and organic solvents.Either component A or component B or components A and B are based on a branched soluble acrylate copolymer P, which is obtainable by copolymerization ofa) 5 to 30% by weight of monomers having at least two ethylenically unsaturated polymerizable double bonds,b) 5 to 60% by weight of monomers having a functional group andc) 5 to 90% by weight of other ethylenically unsaturated monomers,the sum of a, b and c being 100% by weight.

Abstract: The invention relates to dispersions which are obtainable from sheet silicates, a protective colloid and an aqueous dispersant and are suitable for the incorporation of sheet silicates into water-dilutable coating compositions. The dispersions according to the invention are obtainable using poly(propylene oxide) as the protective colloid, and the poly(propylene oxide) contains no hydrophobic terminal groups, has on average at least one hydroxyl group per molecule and may optionally contain up to 40% by weight of --CH.sub.2 --CH.sub.2 --O-- units.

Abstract: Use of a mixture of from 5 to 95% by weight of an azidosilane of the formulaN.sub.3 --R.sup.3 --Si--R.sup.1.sub.n (OR.sup.2).sub.3-n Iwhere R.sup.1 is C.sub.1 -C.sub.3 -alkyl, phenyl, benzyl or tolyl, R.sup.2 is C.sub.1 -C.sub.4 -alkyl, C.sub.2 -C.sub.4 -alkoxyalkyl, phenyl or benzyl, R.sup.3 is C.sub.1 -C.sub.8 -alkylene, which may be interrupted by oxygen, sulfur or --(N--R.sup.4)-- in which R.sup.4 is hydrogen, methyl, ethyl or phenyl, and n is 0, 1 or 2, and from 5 to 95% by weight of an aminoalkoxysilane of the formulaH.sub.2 N--R.sup.5 --Si--R.sup.6.sub.m (OR.sup.7).sub.3-m IIwhere R.sup.5 is C.sub.1 -C.sub.6 -alkylene, C.sub.5 -C.sub.6 -cycloalkylene or C.sub.5 -C.sub.6 -arylene, each of which may be additionally substituted by one or two C.sub.1 -C.sub.3 -alkyl groups, and R.sup.6 and R.sup.7, independently of one another, are C.sub.1 -C.sub.6 -alkyl or C.sub.5 -C.sub.6 -cycloalkyl, each of which may likewise be additionally substituted by one or two C.sub.1 -C.sub.

Abstract: Epoxy resins with urethane groups, containing on average per molecule from 0.5 to 5 groups of the formula I ##STR1## where the substituents R.sup.1 and R.sup.2 are C.sub.1 -C.sub.8 -alkyl groups, which may also be linked together to form five- or six-membered rings, which may contain an oxygen atom, or are each phenyl, are useful in electrocoating.

Abstract: The present invention relates to a coating agent containing A) a component containing carboxyl and tertiary amino groups and a polyepoxy resin B). A) consists of 10 to 90% by weight of a carboxyl- and amino-containing polyacrylate (A1) having an acid number from 20 to 140 and an amine number from 5 to 60 and 90 to 10% by weight of a carboxyl- and amino-containing polyester (A2) having an acid number from 10 to 160 and an amine number from 3 to 90.(A2) is obtainable by reaction ofa) polycarboxylic acids or anhydrides thereof, if desired together with monocarboxylic acids,b) polyols, if desired together with monools, andc) further modifying components and, if desired,d) a component which reacts with the reaction product from a), b) and possibly c),with the proviso that the final product contains tertiary amino groups originating from component a) and/or b) and/or d), the sum of components (A1) to (A2) being 100% by weight.