Huels Aktiengesellschaft

Degussa Aktiengesellschaft

Creanova Spezialchemie Gmbh

Deguss-huels Aktiengesellschaft

Friedrich Plogmann

Rainer Lomoelder

Stephan Kohlstruk

Peter Speier

Emmanouil Spyrou

Andreas Wenning

Dirk Reichel

The present invention relates to new cross-linking agents and thermosetting paints, which lead to improved properties such as scratch resistance of cured thermosetting paints or exhibit good solubility.

Cross-linking agents and thermosetting paints

A nonaqueous, heat-cured, two-component coating has a combination of good scratch resistance and resistance to etching by acid rain and comprises a solvent-containing polyol component and a cross-linking component. The cross-linking component comprises at least one aliphatic and/or cycloaliphatic polyisocyanate having 2 to 6 NCO functional groups per molecule in which 0.1 to 95 mol % of the isocyanate groups of the polyisocyanate are reacted with an N-alkyl-3-aminopropyltrialkoxysilane and/or an N-aryl-3-aminopropyltrialkoxysilane. The weight ratio of the polyol to the cross-linking component in the coating is 6:1 to 1:2.

Nonaqueous, heat-curable two-component coating

An aqueous 2-component PU coating composition essentially comprising: A) an aqueous dispersion of at least one polyol component, B) a polyisocyanate component based on 2-methylpentane 1,5-diisocyanate, the proportions of A and B corresponding to an OH/NCO equivalents ratio of from 1:0.5 to 1:5.

Aqueous two-component polyurethane coating compositions based on 2-methylpentane-1,5-diisocyanate

A two-component polyurethane coating composition essentially comprising (A) a polyols component, (B) a polyisocyanate component, wherein the polyisocyanate component (B) comprises at least 30% by weight of a polyisocyanate based on 2-methylpentane-1,5-diisocyanate and a polyisocyanate based on isophorone diisocyanate, the sum of the two polyisocyanates being 100% by weight.

Growing community of inventors

Castrop-Rauxel, Germany

Friedrich Plogmann