Polyaromatic amine curing agents for epoxy resins

Details Polyaromatic amine curing agents for epoxy resins Polyaromatic amine curing agents for epoxy resins

1978-08-28

1979-07-24

Nielsen, Earl A.

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

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

260570D, 528107, 528266, 528269, C08G 5950

Patent

active

041623584

ABSTRACT:
A liquid methylene bridged polyaromatic amine curing agent for vicinal epoxide resins with high amine content is prepared by reacting an aromatic amine mixture of aniline containing two to eight mole percent of a mononuclear aromatic diamine having the amine groups bonded to nonadjacent carbon atoms of the aromatic ring, with formaldehyde. The resulting methylene bridged polyaromatic amine curing agent produces a cured epoxy resin having a higher heat distortion temperature than conventional curing agents produced by the reaction of aniline alone with formaldehyde.

REFERENCES:
patent: 3446773 (1969-05-01), Schwarz
patent: 3600362 (1971-08-01), Hirosawa
patent: 3852240 (1974-12-01), Smith
patent: 3917702 (1975-11-01), Hirosawa

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