Rinsing composition free from phosphate

US4959170A · kind A · utility

Assignee

• Hoechst GmbH · DE

Inventors

• Hannsjorg Ulrich · Lechenich, DE
• Lothar Westermann · Cologne, DE

Key dates

• Filing date: Nov 21, 1988
• Grant date: Sep 25, 1990
• Expiry date: Nov 21, 2008

Classification

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

Abstract

A rinsing composition free from phosphate contains as a builder a crystalline layer sodium silicate of the general formula NaMSi.sub.x O.sub.2x+1.y H.sub.2 O, in which M is sodium or hydrogen, x is a number of 1.9-4 and y is a number of 0-20, in admixture with a co-builder which is a polymeric and/or copolymeric carboxylic acid or a salt of said acid.