Liquid detergent with copolymer additive

US5009805A · kind A · utility

Assignee

• BASF SE

Inventors

• Johannes Perner · Neustadt, DE
• Paul Diessel · Mutterstadt, DE
• Heinrich Hartmann · Schifferstadt, DE
• Walter Denzinger · Speyer, DE
• Alfred Oftring · Bad Dürkheim, DE
• Willibald Schoenleben

Key dates

• Filing date: Oct 19, 1989
• Grant date: Apr 23, 1991
• Expiry date: Oct 19, 2009

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C11D3/3773
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Liquid detergent formulations contain as essential constituents a surfactant and 0.1-20% by weight of a copolymer which contains PA1 (a) 50-99 mol % of units of a monoethylenically unsaturated C.sub.3 -C.sub.8 -monocarboxylic acid, a monoethylenically unsaturated C.sub.4 -C.sub.8 -dicarboxylic acid, a half ester of a monoethylenically unsaturated C.sub.4 -C.sub.8 -dicarboxylic acid, an ester of a monoethylenically unsaturated C.sub.3 -C.sub.8 -monocarboxylic acid, a C.sub.2 -C.sub.30 -olefin, styrene, a C.sub.1 -C.sub.3 -alkylstyrene, a C.sub.1 -C.sub.28 -alkyl vinyl ether, a vinyl ester of a saturated C.sub.1 -C.sub.8 -monocarboxylic acid or a mixture thereof and PA1 (b) 50-1 mol % of units of an amide of a monoethylenically unsaturated C.sub.3 -C.sub.8 -carboxylic acid where the amide groups have the structure ##STR1## where R.sup.1 is C.sub.8 -C.sub.28 -alkyl or preferably ##STR2## R.sup.3 and R.sup.4 are each H, CH.sub.3 or C.sub.2 H.sub.5, R is C.sub.1 -C.sub.28 -alkyl, PA1 n is from 2 to 100 and PA1 R.sup.2 is H or R.sup.1, and has a K value of from 8 to 200, or a salt thereof.