Method for the preparation of rigid reaction injection molded th

Details Method for the preparation of rigid reaction injection molded th Method for the preparation of rigid reaction injection molded th

1987-04-01

1988-03-15

Welsh, Maurice J.

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

Synthetic resins

From reactant having at least one -n=c=x group as well as...

2643281, 2643286, 2643288, 26433112, C08G 1820

Patent

active

047314273

ABSTRACT:
A method for the preparation of a molded reaction injection molded rigid polyurethane modified polyisocyanurate polymer composition by injecting at least two streams into the mold cavity of a RIM machine to react at temperatures of from about ambient to about 140.degree. C. a reaction mixture comprising at least one stream of an organic di- or polyisocyanate and a second stream of a cyclic alkylene carbonate, a polyether polyol and a soluble adduct of a tertiary amine and a cyclic alkylene carbonate as catalyst.

REFERENCES:
patent: 3703520 (1972-11-01), Carleton et al.

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