Process for preparing reaction injection moldings

Details Process for preparing reaction injection moldings Process for preparing reaction injection moldings

C - Chemistry, Metallurgy

08

G

C08G 18/38 (2006.01) B29C 45/00 (2006.01) C08G 18/10 (2006.01) C08G 18/65 (2006.01) C08G 18/67 (2006.01) C08G 18/68 (2006.01) C08G 18/69 (2006.01)

Patent

CA 2084155

Disclosed herein is a process for the preparation of a reaction injection molded elastomer comprising injecting a reaction mixture into a closed mold via a RIM machine, with the ratio of components being such that the isocyanate index is from about 70 to about 130, said reaction mixture comprising (a) an organic di- and/or polyisocyanate, (b) an amine terminated chain extender, and (c) a compound which is derived from the reaction of a polyfunctional acetoacetic acid ester and an aliphatic amine having amino groups of different reactivity.

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