Reaction injection molding compositions and process

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

C - Chemistry, Metallurgy

08

K

402/139

C08K 5/34 (2006.01) C08G 18/38 (2006.01) C08G 18/65 (2006.01)

Patent

CA 1198848

TITLE REACTION INJECTION MOLDING COMPOSITIONS AND PROCESS ABSTRACT OF THE DISCLOSURE Replacement of one-third to two-thirds of the short chain diols in a polyisocyanate/polymeric poly- ol/short chain diol molding composition with a hydroxy- alkyl-melamine provides shaped articles of increased high temperature stiffness and reduced heat sag. The hydroxy- alkylmelamine is strongly catalytic for the isocyanate- polyol reaction.

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