Patent · US Expired

Adhesive compositions containing aqueous copolymer dispersions and acid metal salts or free acids

US5296532A · kind A · utility

17Cited by

1References

6Claims

0Family size

Assignee

Wacker Chemie AG · DE

Inventors

Reinhard Haerzschel · Burghausen, DE
Rudolf Weissgerber · Burghausen, DE
Herbert J. Kaiser · Pontoon Beach, US
Wilhelm Kaiser · Burghausen, DE

Key dates

Filing date	Feb 14, 1992
Grant date	Mar 22, 1994
Priority date	—
Expiry date	Feb 14, 2012

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08F261/04
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

The invention relates to adhesive compositions for gluing wood containing aqueous vinyl ester graft copolymer dispersions and water-soluble acid metal salts or free acids, in which the adhesive compositions exhibit outstanding resistance to hot water and have high storage stability. The vinyl ester graft copolymer comprises from 2 to 12 percent by weight, based on the total weight of the graft copolymer, of one or more polyvinyl alcohols having a degree of hydrolysis of from 60 to 99 mol persent and 88 to 98 percent by weight, based on the total weight of the graft copolymer, of a grafting monomer mixture. The grafting monomer mixture contains from 5 to 50 percent by weight, based on the total weight of the monomer mixture, of vinyl esters of saturated, highly branched aliphatic monocarboxylic acids having 9 or 10 carbon atoms, vinyl pivalate, diisopropyl maleate, diisopropyl fumarate, vinyl chloride and mixtures thereof.

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