Process of reaction injection molding using...

Details Process of reaction injection molding using... Process of reaction injection molding using...

C - Chemistry, Metallurgy

08

G

C08G 18/79 (2006.01) B29C 45/00 (2006.01)

Patent

CA 2128185

A PROCESS OF REACTION INJECTION MOLDING USING ALLOPHANATE-MODIFIED LIQUID METHYLENE DIPHENYL DIISOCYANATE ABSTRACT OF THE DISCLOSURE The present invention relates to a process for injecting a reaction mixture into a closed mold via a reaction injection molding (RIM) machine with the ratio of the components being such that the isocyanate index is about 80 to 120, said reaction mixture comprising: (i) an isocyanate reactive material, (ii) a chain extender, and (iii) a stable, liquid MDI prepolymer containing an allophanate-modified MDI having an isocyanate content of about 12 to 32.5% which is a reaction product of an aliphatic alcohol and an isomer composition of diphenylmethane diisocyanate comprising from 2 to 60% by weight 2,4'-diphenylmethane diisocyanate and less than 6% by weight of the 2,2'-diphenylmethane diisocyanate, and the rest being 4,4'-diphenylmethane diisocyanate.

Affiliated with

Also associated with

Rating

Process of reaction injection molding using... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process of reaction injection molding using..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process of reaction injection molding using... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1845327