Water-softening compositions

US5575946A · 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: Apr 28, 1994
• Grant date: Nov 19, 1996
• Expiry date: Apr 28, 2014

Classification

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

Abstract

Water-softening formulations which comprise: PA1 (a) a biodegradable copolymer; PA1 (b) an inorganic water-softening silicate; and, optionally, PA1 (c) another inorganic salt; PA1 (d) a dispersing and complexing agent; and PA1 (e) a surfactant and also additional customary additives have improved biodegradability.