Huels Aktiengesellschaft

Chemische Werke Huls Aktiengesellschaft

Chemische Werke Huels Aktiengesellschaft

Uwe Biethan

Werner Andrejewski

Jorg Dorffel

Karl Hahn

Gernold Sorge

Juergen Olbrich

Curing agents which contain carboxy groups, obtained by partial neutralization of an oligoester having an acid number in the range from 245 to 265 with a cyclic amidine, for epoxy-group-containing powder coating compositions to produce matte coatings.

Powder varnish compositions containing carboxy curing agents

A process for preparing an alkenyl derivative of an aromatic hydrocarbon by reacting a conjugated diolefin with the aromatic hydrocarbon comprises conducting the reaction in the presence of a catalyst comprising:

Process for the manufacture of reaction products of conjugated diolefins

Liquid, highly pigmentable coating compositions containing little or no solvent and which are suitable for spray coating employ a binder consisting either of A. 45-10% by weight of an aminoplast, a low-molecular weight precursor thereof, or a mixture thereof, and B. 55-90% of an at least bifunctional polyester, or a mixture thereof, having predominantly hydroxy end groups, a degree of condensation of between 2.5 and 10.5 and a molecular weight of up to 1,000, and prepared by condensing an alcohol component consisting of 0-30 molar percent of one or more 3-6 carbon atom polyols having 3-4 hydroxy groups and 100-70 molar percent of a mixture of diols consisting of 33-90 molar percent of ethylene glycol and 67-10 molar percent of 1,2-propanediol, or a condensation product of A and B.

Highly pigmentable, liquid coating compositions

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Marl, Germany

Uwe Biethan