Detergent formulations free of phosphates, zeolites and crystalline layered silicates

US5496495A · kind A · utility

Assignee

• Chemische Fabrik Stockhausen GmbH · DE

Inventors

• Rudolf Beck · Marl, DE
• Frank Krause · Kleve, DE
• Udo Schoenkaes · Haltern, DE

Key dates

• Filing date: Aug 3, 1994
• Grant date: Mar 5, 1996
• Expiry date: Aug 3, 2014

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C11D3/3761
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

The present invention relates to detergent formulations which contain PA1 (a) 3 to 70% by weight of one or more surfactants; PA1 (b) 1 to 60% by weight of a readily biodegradable copolymer which comprises monomer units obtained from PA2 (A) monoethylenically unsaturated dicarboxylic acids, anhydrides, salts thereof or mixtures thereof, PA2 (B) monoethylenically unsaturated monocarboxylic acids, salts thereof or mixtures thereof, PA2 (C) monounsaturated monomers which aqueous polymerization, after hydrolysis or saponification, give monomer units which have one or more free hydroxyl groups on a carbon chain of the copolymer, and PA2 (D) 0 to 15% by weight of one or more further monomers capable of free radical copolymerization; PA1 (c) 0 to 60% by weight of washing alkalis; and PA1 (d) 0 to 70% by weight of standardizing agents, and their use in inhibiting incrustation of textiles and in removing alkaline earth metals from textiles during laundering.