Process for the preparation of polyisocyanates containing...

Details Process for the preparation of polyisocyanates containing... Process for the preparation of polyisocyanates containing...

C - Chemistry, Metallurgy

07

D

402/182, 260/248

C07D 251/34 (2006.01) C08G 18/79 (2006.01)

Patent

CA 1257594

PROCESS FOR THE PREPARATION OF POLYISOCYANATES CONTAINING ISOCYANURATE GROUPS AND THEIR USE FOR THE PREPARATION OF POLYISOCYANATE POLYADDITION PRODUCTS ABSTRACT OF THE DISCLOSURE The present invention is directed to a process for the preparation of isocyanurate group-containing polyisocyanates by trimerizing a portion of the isocyanate groups of an organic polyisocyanate and terminating the trimerization reaction by the addition of a catalyst poison, characterized in that the trimerization catalyst used is a quaternary phosphonium salt of a tertiary phosphine and an alkylating ester of an acid of phosphorus. The present invention also relates to the use of the polyisocyanates obtained according to this process, optionally, in a form that has been freed from excess starting polyisocyanate and/or optionally blocked with blocking agents for isocyanate groups as the isocyanate component for the preparation of polyisocyanate polyaddition products, preferably polyurethanes.

524481

Affiliated with

Also associated with

Rating

Process for the preparation of polyisocyanates containing... 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 for the preparation of polyisocyanates containing..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for the preparation of polyisocyanates containing... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1273672