Hoechst Aktiengesellschaft

Christoph Just

Gerd Walz

Gerhard Brindopke

Dieter Plath

Dieter Engel

Gerhard Werner

Helmut Durr

Jurgen Ritz

Reinhard Wagner

Rolf Zimmermann

Gunther Hencken

Curable mixtures and their use

Polymers which contain urethane groups and are capable of being crosslinked by extraneous crosslinking agents, solutions thereof and aqueous dispersions thereof, prepared without the use of isocyanates by reacting polyamino compounds with polycarbonates and, if appropriate, reacting the reaction product further with polycarboxylic acids to give products having an acid number between 0 and 100, and, if appropriate, neutralizing the resulting products partly or completely by adding basic compounds, preferably organic bases, and, if appropriate, mixing the partly or completely neutralized products vigorously with an amount of water such that aqueous polymer dispersions having a solids content of up to 75% by weight, relative to the dispersion, are obtained. The use of the polymers containing urethane groups on their own or as a mixture with further reactive components, as extraneous crosslinking agents, from the group comprising isocyanate, melamine, alkyd and epoxy resins, in non-aqueous or aqueous formulations of adhesives and paints, especially in aqueous baking paint formulations and in aqueous, curable paint formulations which can be deposited by anaphoresis.

Polymers containing urethane groups prepared by the reaction of

Polymerizable carbamoyloxyalkyldicarboxylic acid esters, carrying hydroxyl groups, of the general formula (I) ##STR1## in which R.sup.1 represents hydrogen or allyl or hydroxyalkyl having in each case 1 to 30 carbon atoms in the alkyl radical, R.sup.2 represents alkyl or hydroxyalkyl having in each case 1 to 30 carbon atoms in the alkyl radical or the radical ##STR2## subject to the proviso that R.sup.1 is hydrogen and x is an integer from 2 to 20, R.sup.3 represents linear or branched alkylene having 2 to 5 carbon atoms, R.sup.4 represents hydrogen or methyl and R.sup.5 represents hydroxyalkyl or hydroxyaminoalkyl having in each case 2 to 20 carbon atoms in the alkyl radical or an alkyl radical of this type which also contains ester and/or ether groups, and a process for their preparation. The esters according to the invention can be used for the preparation of copolymers.

Polymerizable carbamoyloxyalkyldicarboxylic acid esters carrying

Copolymers based on (A) 5-95% by weight of at least one polymerizable carbamoyloxyalkyldicarboxylic acid ester, carrying hydroxyl groups, of the general formula I ##STR1## in which R.sup.1 represents hydrogen or alkyl or hydroxyalkyl having in each case 1 to 30 carbon atoms in the alkyl radical, R.sup.2 represents alkyl or hydroxyalkyl having in each case 1 to 30 carbon atoms in the alkyl radical, or the radical ##STR2## subject to the proviso that R.sup.1 is hydrogen and x is an integer from 2 to 10, R.sup.3 represents linear or branched alkylene having 2 to 5 carbon atoms, R.sup.4 represents hydrogen or methyl and R.sup.5 represents hydroxyalkyl or hydroxyaminoalkyl having in each case 2 to 20 carbon atoms in the alkyl radical, or an alkyl radical of this type which also contains ester groups and/or ether groups, and (B) 5-95% by weight of at least one copolymerizable monomer belonging to the group comprising (a) .alpha.,.beta.-olefinically unsaturated monocarboxylic acid and alkyl and hydroxyalkyl esters thereof having in each case 1 to 18 carbon atoms in the alkyl radical, and amides and nitriles thereof, and also monoalkyl and dialkyl esters of .alpha.,.beta.-olefinically unsaturated dicarboxylic acids having 1 to 18 carbon atoms in the alkyl radical, (b) vinyl-aromatic monomers, (c) vinyl esters of organic monocarboxylic acids having 1 to 18 carbon atoms in the carboxylic acid radical, and (d) glycidyl esters of unsaturated monocarboxylic and/or dicarboxylic acids, the sum of the components (A) and (B) being in all cases 100% by weight, and a process for their preparation. The copolymers are used for the preparation of shaped articles and/or coatings which have excellent properties.

Curable copolymers, a process for their preparation and their use

A water-dilutable binder for coatings based on reaction products of diene polymers and poly-unsaturated polyfunctional amidoamines, which comprises (a) a cyclorubber, (b) a polyfunctional amidoamine which has been added to component (a) and is derived from reaction with a monomeric unsaturated fatty acid free from conjugated double bonds but having 12 to 18 carbon atoms or from its oligomers, and (c) a polyisocyanate which is bonded to component (b) and whose isocyanate groups which are not bonded to component (b) are blocked, a process for its preparation and its use for paints and coatings.

Water-dilutable binder, a process for its preparation and its use

An unsaturated polyester suitable as a binder which comprises a reaction product of

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Niedernhausen, Germany

Christoph Just