Use of crosslinked polymer microparticles in paints as filler substitute and/or as crosslinking filler

US5135970A · kind A · utility

Assignee

• Hoechst GmbH · DE

Inventors

• Michael Honel · Mainz, DE
• Gerd Walz · Wiesbaden, DE
• Peter Ziegler · Mainz, DE
• Uwe Kubillus · Wiesbaden, DE

Key dates

• Filing date: Sep 28, 1990
• Grant date: Aug 4, 1992
• Expiry date: Sep 28, 2010

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09D163/00
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

The invention relates to the use of crosslinked polymer microparticles having an average particle size of at most 5 .mu.m and a glass transition temperature (Tg) of at least +30.degree. C. in aqueous paint preparations as filler and/or as partial substitute of white pigments, in particular of titanium dioxide. Among other things, the corresponding paints show increased spreading power, less tendency for sedimentation and reduced crater formation.