Reaction injection molding compositions and process

Details Reaction injection molding compositions and process Reaction injection molding compositions and process

1982-04-29

1983-11-08

Cockeram, H. S.

Plastic and nonmetallic article shaping or treating: processes

Mechanical shaping or molding to form or reform shaped article

Shaping against forming surface

26432816, 2643282, 528 73, B29B 124, B29F 100, C08G 1838

Patent

active

044141742

ABSTRACT:
Replacement of one-third to two-thirds of the short chain diols in a polyisocyanate/polymeric polyol/short chain diol molding composition with a hydroxyalkyl-melamine provides shaped articles of increased high temperature stiffness and reduced heat sag. The hydroxyalkylmelamine is strongly catalytic for the isocyanatepolyol reaction.

REFERENCES:
patent: 4139501 (1979-02-01), Rudner et al.
patent: 4301110 (1981-11-01), Cuscurida et al.
patent: 4369258 (1983-01-01), Johnson

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