Powder clear varnish and aqueous powder clear varnish slurry

US6512026B1 · kind B1 · utility

Assignee

• BASF COATINGS GMBH · DE

Inventors

• Gunther Ott · Hachenburg, DE
• Ulrike Rockrath · Senden, DE
• Stephan Schwarte · Münster, DE
• Joachim Woltering · Hachenburg, DE
• Heinrich Wonnemann · Telgte, DE

Key dates

• Filing date: Apr 2, 2001
• Grant date: Jan 28, 2003
• Expiry date: Apr 2, 2021

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08L61/32
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Novel powder clearcoat materials and novel powder clearcoat slurries comprising a) at least one epoxide-containing binder containing from 0.5 to 40% by weight, based on the binder, of copolymerized glycidyl-containing monomers, and b) at least one tris(alkoxy-carbonylamino)triazine and at least one polycarboxylic acid, in particular a straight-chain dicarboxylic acid, and/or a carboxy-functional polyester as crosslinking agent, or alternatively a) at least one tris(alkoxy-carbonylamino)triazine and at least one oligomeric or polymeric, epoxide-containing crosslinking agent containing from 0.5 to 40% by weight, based on the crosslinking agent, of copolymerized glycidyl-containing monomers, and/or a low molecular mass, epoxide-containing crosslinking agent, and b) at least one carboxyl-containing polymer as binder, both variants comprising c) at least one polyol.