Cyclic polycarbonate-polyepoxide reaction product and method for

Details Cyclic polycarbonate-polyepoxide reaction product and method for Cyclic polycarbonate-polyepoxide reaction product and method for

1987-02-25

1988-05-24

Anderson, Harold D.

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

Synthetic resins

From reactant having a halogen atom or oxygen single bonded...

528 10, 528 25, 528 27, 528 95, 528106, 528107, 528116, 528361, 528371, C08G 6362

Patent

active

047467258

ABSTRACT:
Resinous compositions are prepared by the reaction of a composition comprising cyclic polycarbonate oligomers with at least one polyepoxide compound, in the presence of a polycarbonate formation catalyst. The cyclic polycarbonate oligomer composition is preferably a mixture of oligomers of varying degrees of polymerization, and the polyepoxy compound is preferably triglycidyl isocyanurate or a bis-epoxy-terminated bisphenol A-epichlorohydrin concentrate. There may also be present a polycarbonate crosslinking agent. The product of the reaction is a crosslinked polycarbonate network. The method is particularly useful in reactive processing operations such as reaction injection molding.

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