Patent · US Expired

Use of water-soluble copolymers comprising N-vinylimidazole units as color transfer inhibitors in detergents

US6172027A · kind A · utility

2Cited by

4References

8Claims

0Family size

Assignee

BASF SE

Inventors

Dieter Boeckh · Schifferstadt, DE
Stefan Stein · Saulheim, DE
Angelika Funhoff · Schriesheim, DE
Jurgen Alfred Lux · Niederkirchen, DE
Hans-Ulrich Jager

Key dates

Filing date	Nov 23, 1998
Grant date	Jan 9, 2001
Priority date	—
Expiry date	Nov 23, 2018

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC11D3/3776
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

The use of water-soluble copolymers which comprise PA1 (a) 5-20 mol % of N-vinylimidazole or 4-vinylpyridine N-oxide units, PA1 (b) 95-50 mol % of N-vinylpyrrolidone, N-vinyloxazolidone, methyl-N-vinylimidazole units or mixtures thereof and PA1 (c) 0-30 mol % of other monoethylenically unsaturated monomer units, and have an average molecular weight M.sub.w of more than 50,000 as color transfer inhibitors in detergents.

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