4,4,6-trimethylhexahydropyrimidine as an epoxy curing agent

Details 4,4,6-trimethylhexahydropyrimidine as an epoxy curing agent 4,4,6-trimethylhexahydropyrimidine as an epoxy curing agent

1985-09-30

1986-12-16

Nielsen, Earl

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

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

528118, 528361, 528407, C08G 5950

Patent

active

046297693

ABSTRACT:
4,4,6-trimethylhexahydropyrimidine is partially reacted with a polyepoxide to form a room temperature Stable "B" stage epoxy resin system. This system may be stored at or near 25.degree. C. for long periods of time without further reaction. Heating of the partially cured material rapidly transforms the B-Stage product into a cross-linked material which is both temperature and chemically resistant.
These properties make the product useful as preimpregnates with laminae such as cloth, paper, glass cloth and the like and for filament windings.

REFERENCES:
patent: 3883532 (1975-05-01), Begland
patent: 4146714 (1979-03-01), Alink
patent: 4212843 (1980-07-01), Alink
patent: 4265803 (1981-05-01), Soma et al.
patent: 4289869 (1981-09-01), Zengel et al.

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