Preparation of polymethylene polyphenyl polyisocyanate

Details Preparation of polymethylene polyphenyl polyisocyanate Preparation of polymethylene polyphenyl polyisocyanate

C - Chemistry, Metallurgy

07

C

C07C 265/14 (2006.01) C07C 263/10 (2006.01) C07C 263/20 (2006.01)

Patent

CA 2067867

Disclosed herein is an improved process for the preparation of polymethylene polyphenyl polyisocyanate by reacting phosgene with a corresponding polyamine, followed by removing residual phosgene from the reaction mixture, the improvement comprising removing the residual phosgene by contacting the reaction mixture which is maintained at 150 degrees Centigrade or lower, with an inert solvent vapor stream at a temperature which is sufficient to effect a substantially complete removal of the residual phosgene.

Affiliated with

Also associated with

Rating

Preparation of polymethylene polyphenyl polyisocyanate does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Preparation of polymethylene polyphenyl polyisocyanate, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Preparation of polymethylene polyphenyl polyisocyanate will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1763699