Polyesters containing nonionic surfactants as cocondensed units, preparation thereof and use thereof in detergents

US5142020A · kind A · utility

Assignee

• BASF SE

Inventors

• Alexander Kud · Eppelsheim, DE
• Dieter Boeckh · Schifferstadt, DE
• Wolfgang Trieselt · Ludwigshafen, DE
• Hans-Ulrich Jaeger · Neustadt, DE
• Heinrich Hartmann · Schifferstadt, DE

Key dates

• Filing date: Jan 18, 1991
• Grant date: Aug 25, 1992
• Expiry date: Jan 18, 2011

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G63/668
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Polyesters obtainable by condensation of PA0 (a) an at least dicarboxylic acid, or an ester or anhydride or a mixture thereof, PA0 (b) an at least dihydric alcohol or an addition product of from 1 to 5 mol of at least one alkylene oxide of 2 or 3 carbon atoms with 1 mol of an at least dihydric alcohol, or a mixture thereof, and PA0 (c) a water-soluble addition product of from 5 to 80 mol of at least one alkylene oxide with 1 mol of a C.sub.8 -C.sub.24 -alcohol, a C.sub.8 -C.sub.18 -alkylphenol or a C.sub.8 -C.sub.24 -alkylamine in a molar ratio of (a):(b):(c) of 100:(25-2500):(5-110) at not less than 120.degree. C. up to a weight average molecular weight of from 2000 to 50000, are used in amounts of from 0.05 to 15% by weight as grayness inhibitors and soil release promoters in detergents.