Additive for heat-hardenable epoxide resin masses

Details Additive for heat-hardenable epoxide resin masses Additive for heat-hardenable epoxide resin masses

1989-06-27

1991-03-19

Nielsen, Earl

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

528 91, 528361, 528365, 528407, 528408, C08G 5968

Patent

active

050012126

ABSTRACT:
The present invention provides an additive for heat-hardenable epoxide resin masses, wherein the additive contains or consists of adducts and/or reaction products of (a) imidazoles of the general formula: ##STR1## in which R.sub.1, R.sub.2, R.sub.3 and R.sub.4, which can be the same or different, are hydrogen atoms, alkyl, alkenyl or alkynyl radicals containing up to 3 carbon atoms or phenyl radicals, said radicals being unsubstituted or substituted, and (b) at least one aromatic hydroxy acid.
The additives according to the present invention can be used alone as hardeners or, in combination with other latent hardeners, as accelerators.

REFERENCES:
patent: 3509166 (1970-04-01), Wright et al.
patent: 3646048 (1972-02-01), Wright et al.
patent: 4269751 (1981-05-01), Firth
patent: 4331582 (1982-05-01), Babayan
patent: 4360456 (1982-11-01), Firth
Chemical Abstracts 102, 214782e (1985).
Chemical Abstracts 102, 105946r (1985).
Chemical Abstracts 102, 55591y (1985).
Chemical Abstracts 100, 167659s (1984).
Chemical Abstracts 99, 32785v (1983).
Tetrahedron Letters 22, 3245-3246 (1981), Ohta et al., "Synthesis of Thiol Esters".
ACS online printout of 1H-Imidazole, 1-(2-hydroxybenzoyl) and Tetrahedron Letters article.
WPIL, File Supplier, Derwent Publications Ltd., London, GB; AN-89-155151 & JP-A-01 96 278.

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