Abstract: The disclosed invention involves water-dispersible binding agents for cationic electrodeposition coatings and a method for making them, the binding agents are the reaction product of (A) epoxy resins having a molecular weight greater than about 350; (B) polyfunctional, alcohols, carboxylic acids and/or SH-compounds having a molecular weight between about 500-5000 and (C) aminoalcohols with at least one protected primary or tertiary nitrogen atom.

Abstract: The heat-hardenable binder mixture based on organic resins comprises an organic resin having primary and/or secondary and, if appropriate, also additional tertiary amino groups and a cross-linking agent based on an organic compound containing at least 2 carbalkoxymethyl groups. The binder mixture can additionally contain pigments, fillers, cross-linking catalysts, corrosion inhibitors and further finish auxiliaries. The binder mixture is used in a process for preparing coatings by applying a coating agent in the form of a film to a substrate and subsequently hardening the film by baking.

Abstract: This application discloses water-dispersible binders which are based on modified epoxide/amine adducts and are the reaction products ofA. polyepoxides having an epoxide equivalent greater than 1 and a mean molecular weight M.sub.n of 140 to 5,000 withB. diphenylolalkanoate esters andC. amines.

Abstract: The invention relates to a heat-hardenable binder mixture which comprises(A) an organic nonacidic resin having a hydroxyl group content of at least 0.2 equivalent in 100 g of resin and having a molecular weight of at least 850, and(B) a crosslinking agent based on an organic compound which contains at least 2 carbalkoxymethyl ester groups per molecule.

Abstract: The invention relates to water-dispersible binders for cationic electrocoating finishes, which are obtained by reaction of(A) epoxy resins containing low molecular weight aromatic groups and having an epoxide equivalent weight of less than 375 with(B) aliphatic and/or alicyclic polyfunctional alcohols or carboxylic acids having a number average molecular weight of less than 350, further reaction of the product of (A) and (B) with(C) a polyfunctional alcohol having a molecular weight of more than 350, addition at the epoxide groups taking place so that the reaction products of (A) and (B) contain an amount of aromatic groups of from 10 to 45% by weight, calculated as phenylene groups, and further modification of the resulting intermediate with(D) primary and/or secondary amines or ammonium salts in order to achieve the required water-dispersibility.

Abstract: The invention relates to a self-crosslinking heat-curable binder, in particular for electropaints, which is based on an organic synthetic resin which contains primary and/or secondary and, if desired, also tertiary amino groups and esterified carboxyl groups and is water-dilutable due to partial or complete neutralization with acids. The esterified carboxyl groups are activated in the alcohol component by a substituent which induces a negative inductive effect.

Abstract: The invention relates to a self-crosslinking heat-curable binder, in particular for electrocoating finishes, based on an organic synthetic resin which contains primary and/or secondary hydroxyl groups, esterified carboxyl groups and quaternary ammonium groups and can be diluted with water as a result of partial or complete neutralization with acids. The esterified carboxyl groups are activated in the alcohol component by a substituent which has a negative inductive effect.

Abstract: The invention relates to a synthetic resin based on an acrylate copolymer containing epoxide groups and having a number average molecular weight of 1,000 to 30,000. The acrylate copolymer comprises (a) 20 to 90% by weight of an alkyl acrylate having 1 to 18 carbon atoms in the alkyl radical and/or a methacrylate having 1 to 20 carbon atoms in the alkyl radical, (b) 5 to 40% by weight of a hydroxyalkyl acrylate and/or methacrylate and (c) 5 to 40% by weight of glycidyl acrylate and/or methacrylate and/or one other olefinically unsaturated, polymerizable compound carrying an epoxide group, the total amount of components a, b and c being 100%. The hydroxyl groups of the acrylate copolymer have been reacted before or after the copolymerization was carried out at least partially with a partially blocked diisocyanate and/or polyisocyanate.

Abstract: The invention relates to a synthetic resin based on an acrylate copolymer containing epoxide groups and having a number average molecular weight of 1,000 to 30,000. The acrylate copolymer comprises (a) 20 to 90% by weight of an alkyl acrylate having 1 to 18 carbon atoms in the alkyl radical and/or a methacrylate having 1 to 20 carbon atoms in the alkyl radical, (b) 5 to 40% by weight of a hydroxyalkyl acrylate and/or methacrylate and (c) 5 to 40% by weight of glycidyl acrylate and/or methacrylate and/or one other olefinically unsaturated, polymerizable compound carrying an epoxide group, the total amount of components a, b and c being 100%. The hydroxyl groups of the acrylate copolymer have been reacted before or after the copolymerization was carried out at least partially with a partially blocked diisocyanate and/or polyisocyanate.

Abstract: The heat-hardenable binder mixture based on organic resins comprises an organic resin having primary and/or secondary and, if appropriate, also additional tertiary amino groups and a cross-linking agent based on an organic compound containing at least 2 carbalkoxymethyl groups. The binder mixture can additionally contain pigments, fillers, cross-linking catalysts, corrosion inhibitors and further finish auxiliaries. The binder mixture is used in a process for preparing coatings by applying a coating agent in the form of a film to a substrate and subsequently hardening the film by baking.

Abstract: The invention relates to a self-crosslinking heatcurable binder, in particular for electropaints, which is based on an organic synthetic resin which contains primary and/or secondary and, if desired, also tertiary amino groups and esterified carboxyl groups and is water-dilutable due to partial or complete neutralization with acids. The esterified carboxyl groups are activated in the alcohol component by a substituent which induces a negative inductive effect.

Abstract: The invention relates to a selfcrosslinking heat-hardenable binder, in particular for electropaints, which is based on an organic synthetic resin which contains hydroxyl groups and esterified carboxyl groups in the form of carbalkoxymethyl ester groups and is water-dilutable by partial or complete acid-neutralization of amino groups present in the resin.

Abstract: A heat-hardenable binder mixture based on organic resins comprises an organic resin having primary and/or secondary and, if appropriate, also additional tertiary amino groups and a crosslinking agent based on an organic compound which contains at least 2 .beta.-hydroxyalkyl ester groups. The binder mixture can additionally contain pigments, fillers, crosslinking catalysts, corrosion inhibitors and other paint auxiliaries. The binder mixture is used in a process for preparing coatings by applying a coating agent in the form of a film to a substrate and subsequently hardening the film by stoving.

Abstract: The invention relates to water-dispersible binders which are intended for cationic electropaints and are based on reaction products which are formed from modified epoxy resins and primary and/or secondary amines and which can, if desired, also contain crosslinking agents, pigments, flow-control agents and other customary auxiliaries.