Patent · US Active

Stain blocking compositions

US9238747B2 · kind B2 · utility

2Cited by

15References

13Claims

0Family size

Assignee

BASF SE

Inventors

Jacob Wildeson · Chambersburg, US
John Kelly · Warrington, GB
Audrey Cosyns · Mannheim, DE
Harm Wiese · Heidelberg, DE

Key dates

Filing date	Nov 17, 2008
Grant date	Jan 19, 2016
Priority date	—
Expiry date	Oct 20, 2031

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC09D143/02
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

An aqueous coating composition for blocking stains and a method of using the coating composition is described. The coating composition includes an aqueous dispersion of a copolymer that is derived from a single stage emulsion polymerization of an ethylenically unsaturated nonionic monomer, greater than 0 and less than 1.5% by weight of an ethylenically unsaturated strong acid monomer or salt thereof, and greater than 1.5% and less than 3% by weight of methacrylic acid.

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