Use of vinylpyrrolidone copolymers as detergent additives, novel polymers of vinylpyrrolidone, and preparation thereof

US5627151A · kind A · utility

Assignee

• BASF SE

Inventors

• Juergen Detering · Schifferstadt, DE
• Christian Schade · Ludwigshafen, DE
• Wolfgang Trieselt · Ludwigshafen, DE
• Juergen Tropsch · Münstermaifeld, DE

Key dates

• Filing date: Apr 21, 1995
• Grant date: May 6, 1997
• Expiry date: Apr 21, 2015

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C11D3/3788
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

There are described the use of copolymers obtainable by free-radically initiated copolymerization of monomer mixtures comprising PA0 (a) 60-99% by weight of 1-vinylpyrrolidone, 1-vinylimidazole or mixtures thereof, PA0 (b) 1-40% by weight of nitrogen-containing, basic ethylenically unsaturated monomers in the form of the free bases, in the form of salts or in quaternized form, and optionally PA0 (c) up to 20% by weight of other monoethylenically unsaturated monomers, as detergent additives for inhibiting dye transfer during the wash, detergents which contain such polymers, and polymers which are obtainable by free-radically initiated polymerization of PA0 (a) 1-vinylpyrrolidone, 1-vinylimidazole, 1-vinylimidazolium compounds, or mixtures thereof, and optionally PA0 (b) other nitrogen-containing, basic ethylenically unsaturated monomers in the form of the free bases, in the form of the salts or in quaternized form, and/or PA0 (c) other monoethylenically unsaturated monomers, in an aqueous medium in the presence of water-soluble proteins and a process for the preparation of the polymers by polymerising the monomers (a) and optionally (b) and/or (c) in an aqueous medium in the presenc…