Heat stable reaction injection molded elastomers

Details Heat stable reaction injection molded elastomers Heat stable reaction injection molded elastomers

1979-04-30

1981-03-03

Anderson, Philip

Plastic and nonmetallic article shaping or treating: processes

Pore forming in situ

By gas forming or expanding

264 453, 264 50, 264 53, 264236, 26432814, 264DIG5, 264DIG83, 521904, 521914, B29D 2704

Patent

active

042540690

ABSTRACT:
The invention is a method for making reaction injection molded polyurethane of improved properties. The product comprises the cured reaction product of a high molecular weight polyhydric polyether, a low molecular weight active hydrogen containing compound of at least two functionality and a polyisocyanate. The reaction product is cured by subjecting it to an ambient temperature of from about 290.degree.-425.degree. F. for a time sufficient to achieve an improvement in properties. The invention is also the resulting polyurethane.

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patent: 4098773 (1978-07-01), Illers et al.
patent: 4111861 (1978-09-01), Godlewski
patent: 4131604 (1978-12-01), Szycher

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