Hoechst Aktiengesellschaft

Kurt Kraft

Gerd Walz

Johannes Reese

Thaddaus Wirth

Dieter Engel

Jurgen Ritz

Johannes Brandrup

Ernst Horoldt

Franz Mayer

Gerhard Gebauer

Ernst-August Theiling

Aqueous polymer dispersions based on (A) 1 to 99% by weight of a carboxy-functional polymer which additionally contains epoxy groups, (B) 1 to 99% by weight of a polymer obtained from at least one .alpha.,.beta.-olefinically unsaturated monomer, the polymer (B) having been prepared in the presence of polymer (A), (C) 0 to 20% by weight of anionic or non-ionic emulsifiers or a mixture of the two or protective colloids, the quantity data relating to the solids content of components (A) to (C), and if appropriate further conventional additives, the sum of all the components always being 100%. The invention also relates to a process for the preparation of such polymer dispersions, which are particularly suitable as a binder component in metallic basecoats or metal-free, (uni) basecoats and electrocoatings.

Polymer dispersions, process for their preparation, and their use as

A reactive hardenable polymer mixture which comprises

Reactive hardenable polymer mixture and process for the preparation of

Molding compositions containing triketoimidazolidine precondensates,

A water-soluble reactive binder, characterized by a combination of at least three of the components

Water-soluble reactive polymer mixture

A thermosetting coating or adhesive composition based on (A) at least one component selected from the group consisting of oligomeric and polymeric compounds containing at least one of the functional groups hydroxyl and epoxy groups, and (B) a polycarboxylic acid mixture comprising trimellitic acid and a major amount of at least one compound of one of the formulae ##STR1## wherein R, R' and R'', being the same or different, each represents a di- to hexavalent hydrocarbon radical having a total of from 1 to 12 carbon atoms, said radical containing from zero to 2 olefinic double bonds, said radical without double bonds being interrupted by up to 3 ether bridges:

Thermosetting compositions

A highly-reactive powder resin composition suitable for use in the production of coatings comprising a mixture of (A) at least one polymer containing groups selected from hydroxyl and epoxy-groups, having a melt viscosity of 2 000 to 20 000 cP at 160.degree. C. and a melting range of from 45.degree. to 95.degree. C.; and (B) at least one compound of formula ##STR1## wherein R represents an aliphatic hydrocarbon group-- being substituted by an ester or a carboxy group or being interrupted by an O-ether linkage --

Highly reactive powder resin compositions containing polycarboxylic acid

A process for the preparation of a monomer compound containing a structural unit of the formula ##STR1## wherein one of Q and Q' are independently the group --NH--CO--OR.sup.IV or hydrogen and the other --NH--CO--COOR.sup.V or hydrogen, a urethane or an isocyanate, wherein R.sup.IV and R.sup.V aliphatic or carbocyclic hydrocarbon groups being substituted or unsubstituted group; R and R'' are unsubstituted or monosubstituted aromatic radicals (wherein at least one oxamidic ester and) wherein at least one oxamidic acid ester with the grouping --NH--CO--CO--OR.sup.V, wherein R.sup.V is as defined, is reacted with an isocyanate or an isocyanate forming compound at temperatures of -20.degree. to +280.degree. C in the presence or absence of a catalyst,

N,N-Substituted 2,4,5-triketoimidazolidines and a process for their

A process for the preparation of a polymer compound containing a plurality of structural units of the formula ##STR1## and having the formula ##STR2## WHEREIN ONE OF Q and Q' are independently the group --NH--CO--OR.sup.IV or hydrogen and the other --NH--CO--COOR.sup.V or hydrogen, wherein

N,N'substituted 2,4,5-triketoimidazolidines, corresponding resinous

The invention provides a high temperature resistant anti-adhesion and slide lacquer composed substantially of finely distributed low molecular polytetrafluorethylene, a polytriketo-imidazolidine resin and a solvent or solvent mixture. The system of the invention may be applied to the substrate in one single operation.

Coating composition

A modified N,N'-substituted 2,4,5-triketoimidazolidine containing polycarboxylic acid amide or imide groups at least in the main chain, a process for its manufacture which comprises reacting at a temperature of from minus 20 to plus 280.degree. C (a) at least one oxamidic ester having the group --NH--CO--CO--OR.sup.v, wherein R.sup.v is an aliphatic hydrocarbon group having up to 18 carbon atoms, a cycloaliphatic hydrocarbon group with up to 8 carbon atoms, a mononuclear aromatic hydrocarbon group which may contain at least one hydrocarbon group which constitutes a total of up to 14 carbon atoms (b) at least one isocyanate having or yielding 1 to 4 isocyanate groups or isocyanates forming compound and (c) a polybasic carboxylic acid component having 4 to 71 carbon atoms and 2 to 6 carboxylic groups so as to obtain a condensation product possessing amide or imide groups.

Process for preparing triketoimidazolidines

A process for the preparation of modified N,N'-substituted-2,4,5-triketoimidazolidines which comprises reacting a precondensate having terminal isocyanate groups, prepared by reacting (a) a polybasic carboxylic acid, containing from 4 to 70 carbon atoms and from 2 to 6 carboxyl groups, with an excess of (b) one or more isocyanates or isocyanate forming compounds in the presence of a solvent, with (c) at least one oxamidic ester containing the group NH--CO--CO--OR.sup.v wherein R.sup.v represents an aliphatic hydrocarbon group containing up to 18 carbon atoms, a cycloaliphatic hydrocarbon group containing up to 8 carbon atoms or a mononuclear aromatic hydrocarbon group being unsubstituted or substituted by at least one hydrocarbon group and having a total of up to 14 carbon atoms in the presence of a solvent, a product prepared by said process and a shaped article comprising such a product.

Growing community of inventors

Wiesbaden, Germany

Kurt Kraft