Patent · US Expired

Pigmented formulations based on aqueous polymer dispersions

US6492451B1 · kind B1 · utility

29Cited by

3References

10Claims

0Family size

Assignee

BASF SE

Inventors

Rolf Dersch · Bischofswerda, DE
Joachim Roser · Dessel, BE
Bernhard Schlarb · Ludwigshafen, DE
Cheng-Le Zhao · Charlotte, US

Key dates

Filing date	May 11, 2000
Grant date	Dec 10, 2002
Priority date	—
Expiry date	May 11, 2020

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08F230/02
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

A pigment-comprising formulation for coating substrates, comprising:(i) an aqueous dispersion of at least one water-insoluble polymer P which has phosphonate groups, as a binder, said polymer P having a glass transition temperature Tg in the range of −60° to 80° C.,(ii) at least one inorganic pigment,(iii) optionally, one or more inorganic fillers, and(iv) at least one auxiliary,wherein water-insoluble polymer P is obtained by free-radical aqueous emulsion polymerization of ethylenically unsaturated monomers comprising:90 to 99.9% by weight of at least one monomer a, which is selected from the group consisting of vinylaromatic monomers, the esters of acrylic acid with C1-C12-alkanols, the vinyl esters of aliphatic C1-C12-monocarboxylic acids, ethylene and vinylchloride, and0.1 to 10% by weight of at least one phosphonate group containing monomer.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.