Aqueous polymer preparations containing pigments

US6476097B1 · kind B1 · utility

Assignee

• BASF SE

Inventors

• Cheng-Le Zhao · Charlotte, US
• Uwe Dittrich · Schifferstadt, DE
• Manfred Schwartz · Bischofswerda, DE
• Wolfgang Hümmer · Birkenheide, DE

Key dates

• Filing date: Jan 8, 2001
• Grant date: Nov 5, 2002
• Expiry date: Jan 8, 2021

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09D151/003
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

An essentially solventless pigmented aqueous formulation which comprises:i) at least one polymer A in the form of polymer particles in disperse distribution, said particles comprising,from 80 to 99.9% by weight, based on the overall weight of the polymer A, of a water-insoluble polymer 1 having a glass transition temperature Tg1 in the range from −50 to +40° C., built up from ethylenically unsaturated monomers M1, andfrom 0.1 to 20% by weight, based on the overall weight of the polymer A, of one or more water-insoluble polymers i having a glass transition temperature Tgi of more than 50° C., built up from ethylenically unsaturated monomers Mi,ii) at least one pigment and, if desired, one or more extenders.