Huels Aktiengesellschaft

Richard Braunstein

Elmar Wolf

Felix Schmitt

Bernhard Schleimer

Joern Volker Weiss

A liquid one-component PU stoving enamel is provided along with its synthesis, where the stoving enamel contains a) a hydroxyl-containing polymer; b) a partially or totally blocked isophorone-based polyisocyanate containing uretdione groups; c) an organic bismuth compound catalyst, and d) an organic solvent or mixture of two or more organic solvents, wherein components a and b are present in a total (a+b) amount of from 40 to 70 parts by weight based on total composition weight, component c is present in an amount of from 0.5 to 5 parts by weight based on total composition weight; and component d is present in an amount of from 30 to 60 parts by weight based on total composition weight; and wherein a and b are each present in amounts sufficient to provide an OH/NCO equivalents ratio of from 0.8 to 1.2 NCO equivalents of component b per OH equivalent of component a.

Liquid one component PU stoving enamels

A flexible epoxy resin system is prepared by incorporating a combination of hardeners (A) and (B) in an epoxy resin, wherein the amounts of the two hardeners are varied to adjust the flexibility of the epoxy resin.

Growing community of inventors

Dorsten, Germany

Richard Braunstein