The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 08, 1998
Filed:
Aug. 08, 1996
Juergen Detering, Limburgerhof, DE;
Christian Schade, Ludwigshafen, DE;
Wolfgang Trieselt, Ludwigshafen, DE;
Juergen Tropsch, Altrip, DE;
BASF Aktiengesellschaft, Ludwigshafen, DE;
Abstract
There are described the use of copolymers obtainable by free-radically initiated copolymerization of monomer mixtures comprising (a) 60-99% by weight of 1-vinylpyrrolidone, 1-vinyl-imidazole or mixtures thereof, (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 (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 (a) 1-vinylpyrrolidone, 1-vinylimidazole, 1-vinylimidazolium compounds, or mixtures thereof, and optionally (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 (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 presence of water-soluble proteins using from 0.5 to 400 parts by weight of protein per 100 parts by weight of monomer used in the polymerization.