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

摘要

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 DEG 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.