Method for the preparation of rigid cast or transfer molded ther

Details Method for the preparation of rigid cast or transfer molded ther Method for the preparation of rigid cast or transfer molded ther

1987-08-24

1989-01-24

Silbaugh, Jan H.

Plastic and nonmetallic article shaping or treating: processes

Mechanical shaping or molding to form or reform shaped article

Shaping against forming surface

2643286, 528 53, B29C 4502

Patent

active

048000582

ABSTRACT:
A method for the preparation of cast or transfer molded rigid polyurethane modified polyisocyanurate polymer composition by conveying from a mixing chamber into a mold cavity of desired configuration to react at temperatures of from about ambient to about 140.degree. C. a reaction mixture of an organic di- or polyisocyanate, a cyclic alkylene carbonate and a polyether polyol, in the presence of a soluble adduct of a tertiary amine and a cyclic alkylene cabonate as a catalyst.

REFERENCES:
patent: 4517150 (1985-05-01), Harashima et al.
patent: 4540781 (1985-09-01), Barsa
patent: 4565511 (1986-01-01), Ramisch
patent: 4731427 (1988-03-01), Younes

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