Aqueous binder compositions and their use in heat curable coating compositions

US6166111A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Volker Schneider · Sinsheim, DE
• Harald Blum · Wachtendonk, DE
• Lothar Kahl · Bensberg, DE
• Hans-Gunter Schmitz · Moers, DE
• Nusret Yuva · Wermelskirchen, DE

Key dates

• Filing date: Jul 20, 1995
• Grant date: Dec 26, 2000
• Expiry date: Jul 20, 2015

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09D167/06
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

An aqueous binder composition having a reduced tendency to yellow containing PA0 A) 20 to 95 wt-% of a water-dilutable organic polyol component that is present in the form of an aqueous solution or dispersion, contains one or more polymer-modified polyester resins which contain carboxylate groups and hydroxyl groups and has been prepared by the polymerization of olefinically unsaturated monomers in the presence of an unsaturated polyester resin that is copolymerized with the monomers and PA0 B) 5 to 80 wt-% of at least one heat-activatable cross-linking resin, wherein the percentages are based on the solids contents of components A) and B) and add up to 100%; and their use in heat-curable coating compositions.