Use of grafted polyalkylene oxides as greying inhibitors when washing

US6946004B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Jürgen Huff · Ludwigshafen, DE
• Bernhard Mohr · Titting, DE
• Axel Kistenmacher · Ludwigshafen, DE
• Sebastian Koltzenburg · Schifferstadt, DE
• Christine Muller · Ochsenfurt, DE

Key dates

• Filing date: Aug 30, 2001
• Grant date: Sep 20, 2005
• Expiry date: Jun 7, 2022

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08L51/08
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The invention relates to the use of grafted polymers as greying inhibitors during the washing and aftertreatment of textile goods. Said polymers are obtained by polymerising A) 10 to 95 wt. % of grafted monomers containing, in relation to A), a) 1 to 99 wt. % of at least one vinyl ester, b) 1 to 99 wt. % of at least one N-vinyl lactam, c) 0 to 90 wt. % of at least one other monoethylenically unsaturated monomer which can be copolymerized with monomers a) and b), and d) 0 to 5 wt. % of at least one monomer having at least two ethylenically unsaturated, non-conjugated double bonds in the molecule, in the presence of A) 5 to 90 wt. % of at least one polymer B), chosen from polyalkylene oxides containing at least 3 units of a C2 to C4 alkylene oxide, and polytetrahydrofuranes containing at least 3 units of tetramethyl oxide units, and the mixtures thereof.