Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Patent
1984-05-11
1985-02-19
Schain, Howard E.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
525504, 528152, 528157, 528163, 528245, C08G 1406, C08G 1412
Patent
active
045006903
ABSTRACT:
Heat resistant thermosetting prepolymers are prepared by reacting one or more methylated pyridines or pyrazines with one or more aromatic dialdehydes, and isopropenyl phenols. The prepolymers can be further reacted with bismaleimides to make prepolymers with lower cure temperatures and faster cure rates. The total number of methyl groups on the pyridine or pyrazine can vary from 2 to 4. The prepolymers are cured to produce heat resistant polymers and laminates with conventional fibers such as carbon fibers.
REFERENCES:
patent: 2631140 (1953-03-01), Bloch
patent: 2843566 (1958-07-01), Christenson et al.
patent: 2948702 (1960-08-01), Vogel et al.
patent: 3294746 (1966-12-01), Farnham
patent: 3516971 (1970-06-01), Webb
patent: 3651012 (1972-03-01), Holub et al.
patent: 3994862 (1976-11-01), Ropars et al.
patent: 4163740 (1979-08-01), Malassine et al.
patent: 4179429 (1979-12-01), Hanauye et al.
patent: 4320043 (1982-03-01), Anderson
patent: 4362860 (1982-12-01), Ratto et al.
Colley B. G.
Schain Howard E.
The Dow Chemical Company
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