Aqueous stable suspension of water-insoluble silicates capable of binding calcium ions and their use for the production of washing and cleaning agents

US5298185A · kind A · utility

Assignee

• Degussa AG · DE

Inventors

• Wolfgang Leonhardt · Frankfurt, DE
• Roland Bergmann · Großkrotzenburg, DE

Key dates

• Filing date: Mar 17, 1992
• Grant date: Mar 29, 1994
• Expiry date: Mar 17, 2012

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C11D1/8255
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Aqueous suspensions of a silicate capable of binding calcium ions, containing, based on the total weight of the suspension, PA0 a) as silicate, a compound corresponding to Formula I: EQU (Cat.sub.2 /.sub.n O).sub.x .multidot.Me.sub.2 O.sub.3 .multidot.(SiO.sub.2).sub.y (I) and PA0 B) as dispersing component, a mixture of at least two oxoalcohol ethoxylates corresponding to Formula II EQU R--(OCH.sub.2 CH.sub.2).sub.n --OH (II), PA0 wherein R=C.sub.10 -C.sub.15 alkyl having a degree of branching of 0 to 90% linear and 100 to 10% single methyl branches PA0 n=3-5.25 mol ethoxy groups in Component 1 PA0 n=5.5-7.0 mol ethoxy groups in Component 2 PA0 C) a polyethylene glycol having an average molecular weight of from 200 to 2000.