Patent · US Expired

Aqueous sheet silicate dispersions, use of these dispersions as coating assistants and water-dilutable coating compositions containing sheet silicates

US5198490A · kind A · utility

7Cited by

10References

14Claims

0Family size

Assignee

Basf Lacke & Farben Aktiengesellschaft · DE

Inventors

Ralf Berg · Münster, DE
Bodo Müller · Tornesch, DE

Key dates

Filing date	Oct 16, 1989
Grant date	Mar 30, 1993
Priority date	—
Expiry date	Oct 16, 2009

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC09D5/38
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

The invention relates to dispersions which are obtainable from sheet silicates, a protective colloid and an aqueous dispersant and are suitable for the incorporation of sheet silicates into water-dilutable coating compositions. The dispersions according to the invention are obtainable using poly(propylene oxide) as the protective colloid, and the poly(propylene oxide) contains no hydrophobic terminal groups, has on average at least one hydroxyl group per molecule and may optionally contain up to 40% by weight of --CH.sub.2 --CH.sub.2 --O-- units.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.