Flame-retardant copolymers
AssigneeFMC Corporation
InventorsJames L. Thomas, Gert P. Volpp
Life of this patent
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Abstract
Flame retardancy is imparted to curable vinyl-unsaturated polymers such as unsaturated polyesters and diallyl and dimethallyl phthalates, by incorporating with them from about 5 to 50% of total copolymer weight of diallyl tetrabromophthalate, a monomer which copolymerizes with the unsaturated polymer.
Claims4
A flame-retardant thermosetting vinyl-unsaturated composition comprising a thermosetting vinyl-unsaturated polymer capable of further polymerization to the thermoset stage of the group consisting of unsaturated polyester and diallyl phthalate prepolymers containing as a flame-retarding agent from 5 to 50%, by weight of total polymerizable material, of diallyl tetrabromophthalate, the composition being distinguished not only by its flame resistance but by good high temperature performance.
Dependencies are inferred from the claim text.