Basf Farben and Fasern Ag

Basf Aktiengesellschaft

Basf Lacke+farben Ag

Dieter Moller

Ulrich Poth

Werner Lenz

Arnold Dobbelstein

Hans Sander

Udo Vorbeck

Coating composition with extended pot life

A process for the production of coatings based on reaction products of (A) polyhydroxy polyacrylate resins obtained from hydroxyalkyl esters of acrylic acid and/or methacrylic acid, alkyl acrylates and/or methacrylates, one or more polymerizable, olefinically unsaturated N-containing heterocyclic compounds and if appropriate vinyl-aromatics, acrylamides or methacrylamides and other monomers with (B) isocyanurate-containing polyisocyanates having a functionality of from 2.5 to 6 and predominantly containing cycloaliphatically bonded isocyanate groups is particularly useful for coating metal articles.

Production of coatings

A baking lacquer based on acrylate polymers in organic solvents, optionally with coloring pigments and/or fillers is disclosed. The layer is characterized by a combination of two acrylate polymers A and B, wherein acrylate polymer A is a copolymer of copolymerizable ethylenically unsaturated compounds possessing free carboxyl groups originating from copolymerized alpha, beta-ethylenically unsaturated carboxylic acids, a proportion of the free carboxyl groups being esterified with a glycerol radical, which also contains other fatty acid radicals attached by ester bonds, so that 0.5-3 moles of free alpha, beta-ethylenically unsaturated carboxylic acid and 0.6 to 2 moles of alpha, beta-ethylenically unsaturated carboxylic acid esterified with the glycerol radical are employed per 1,000 g of acrylate polymer, and wherein acrylate polymer B is a polymer of an alpha, beta-ethylenically unsaturated carboxylic acid and, optionally, other, copolymerizable, ethylenically unsaturated compounds, in which the carboxyl groups are esterified with a radical which contains at least one epoxide group, the number of epoxide groups being so chosen as to give an epoxide equivalent weight of between 120 and 2,000.

Baking lacquer

An article having a substrate and a multilayer coating composition adhered thereto. The multilayer coating has a pigmented base film and deposited on the base film is a transparent coating which has no intermixing and no intersolution between the base coating and the transparent coating. The transparent coating is a cross linking resin containing hydroxyl groups obtained by esterifying polycarboxylic acids with polyols.

Base coats covered by a clear lacquer coating and process for coating

Growing community of inventors

Ascheberg, Germany

Dieter Moller