Patent · US Expired

Hardeners for epoxy resins

US4569971A · kind A · utility

16Cited by

2References

17Claims

0Family size

Assignee

Rutgerswerke Aktiengesellschaft · DE

Inventors

H. Rainer Sasse · Aachen, DE
Karl Conrad · Moers, DE
Rolf Herzog · Winterthur, CH
Hans-Christof Klein · Hattersheim, DE
Bert Meier · Wesel, DE

Key dates

Filing date	Aug 15, 1983
Grant date	Feb 11, 1986
Priority date	—
Expiry date	Aug 15, 2003

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08G59/621
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

Novel hardener compositions for epoxy resins comprising (a) 65 to 95% by weight of an adduct containing free amino groups of 35 to 94% by weight of at least one member of the group consisting of polyamines, polyaminoimidazolines and polyaminoamides and 5 to 30% by weight of at least one glycidyl compound, based on the total hardener composition weight, (b) 0.1 to 5% by weight at least one aliphatic or aromatic carboxylic acid and (c) 0.9 to 30% by weight of a phenol-modified aromatic hydrocarbon resin with a hydroxyl content of 0.9 to 6% and their preparation, water-emulsifable epoxy compositions containing said hardener compositions, aqueous emulsions of said epoxy resins, water compositions containing said aqueous epoxy emulsions and their uses.

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