Process for preparing reaction injection moldings

Details Process for preparing reaction injection moldings Process for preparing reaction injection moldings

1991-12-09

1994-10-18

Kight, III, John

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521161, 521137, 521158, 528 45, 528 48, 528 52, 528 75, C08G 1800

Patent

active

053569466

ABSTRACT:
Disclosed herein is a process for the preparation of a reaction injection molded elastomer comprising injecting a reaction mixture into a closed mold via a RIM machine, with the ratio of components being such that the isocyanate index is from about 70 to about 130, said reaction mixture comprising (a) an organic di- and/or polyisocyanate, (b) an amine terminated chain extender, and (c) a compound which is derived from the reaction of a polyfunctional acetoacetic acid ester and an aliphatic amine having amino groups of different reactivity.

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patent: 4444910 (1984-04-01), Rice et al.
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patent: 4774264 (1988-09-01), Weber et al.
patent: 5098984 (1992-03-01), Mafoti

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