Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From phenol – phenol ether – or inorganic phenolate
Patent
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
Marquis Edward T.
Waddill Harold G.
Bailey James L.
Kulason Robert A.
Nielsen Earl A.
Ries Carl G.
Texaco Development Corporation
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