Aqueous binder dispersion useful for producing hardly yellowing, highly glossy coatings

US6187384A · kind A · utility

Assignee

• BASF COATINGS GMBH · DE

Inventors

• Guido Wilke · Munster, DE
• Dittmar Grapatin · Dülmen, DE
• Heinz-Peter Rink · Hachenburg, DE

Key dates

• Filing date: May 1, 1998
• Grant date: Feb 13, 2001
• Expiry date: May 1, 2018

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G18/8048
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The invention relates to binders BM for one-component coating systems, comprising a polyurethane alkyd resin component (A) composed of: PA1 (a) from 5 to 50% by weight of a mixture of: PA2 (a1) from 90 to 30 parts by weight of an unsaturated C6 to C30 fatty acid containing at least two nonconjugated double bonds, and PA2 (a2) from 10 to 70 parts by weight of an is unsaturated C6 to C30 fatty acid containing at least two conjugated double bonds as esterified polymer side chains of the polyurethane alkyd resin component (A) and PA1 (b) from 95 to 50% by weight of polyurethane units as polymer main chains of the polyurethane alkyd resin component (A).