Thermoset polymer compositions

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...

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528 59, 528 66, 528 73, 525502, 525528, C08G 1828

Patent

active

047571152

ABSTRACT:
Thermoset polymers are prepared by reacting an ethylenically unsaturated resin monomer and a bicyclic amide acetal with a polyisocyanate in the absence or presence of a vinyl monomer. Reaction rates are suitable for effecting RIM processing. The resultant polymers exhibit improved impact resistance. Further variation in physical properties can be achieved through the use of a diol chain extender for the polyisocyanate.

REFERENCES:
patent: 4101527 (1978-07-01), Cunningham
patent: 4374229 (1983-02-01), Dunnavant
patent: 4540767 (1985-09-01), Goel
patent: 4558113 (1985-12-01), Goel

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