Reaction injection molding compositions

Details Reaction injection molding compositions Reaction injection molding compositions

1988-02-26

1988-12-27

Welsh, Maurice J.

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521129, 521130, 521163, 25218213, 25218223, 528 44, 528 48, 528 49, 528 57, 528 73, 528 76, C08G 1814

Patent

active

047941294

ABSTRACT:
Polymers having substituted urea groups, and molded objects therefrom, can be made by reacting, in a reaction injection molding (RIM) process, a composition comprising (A) a polyisocyanate and (B) a mixture comprising an imino functional resin and a chain extender. The chain extender may also be imino functional.

REFERENCES:
patent: 3682867 (1972-08-01), Shackelford et al.
patent: 3789045 (1974-01-01), Coury et al.
patent: 3892696 (1975-07-01), Wood
patent: 3897585 (1975-07-01), Wood
patent: 4218543 (1980-08-01), Weber et al.
patent: 4554299 (1985-11-01), Liggett
Bock et al., "New Developments in Polyketimine-Polyisocyanate Chemistry and Their Application", ACS-PMSE Preprints; Fall, 1986 Meeting; pp. 448-456.

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