Process for the production of stabilized polyisocyanates,...

Details Process for the production of stabilized polyisocyanates,... Process for the production of stabilized polyisocyanates,...

B - Operations, Transporting

01

J

402/131, 403/14,

B01J 13/02 (2006.01) C08G 18/08 (2006.01) C08G 18/28 (2006.01) C08G 18/70 (2006.01) C08G 18/80 (2006.01)

Patent

CA 1193493

ABSTRACT OF THE DISCLOSURE A process for the production of solid polyisocyanates stabilized by a polymer coating and showing retarded reactivity comprising reacting (1) one or more solid polyisocyanates in particulate form, said polyisocyanates having melting points above 30°C, and (2) from 0.1 to 25 equivalent percent of amine per isocyanate equivalent of an organic compound having a molecular weight of from 32 to 6000, said organic compound being selected from the group consisting of (a) di- or higher functional compounds containing 2 or more aliphatically-bound primary and/or secondary amino groups, (b) compounds containing one ore more terminal -CO-, -NH-, -NH2- groups, (c) hydrazines, and (d) mixtures thereof said reaction being conducted at a temperature below the melting temperature of said solid polyisocyanate, and being conducted in the presence of (3) a liquid medium selected from the group consisting of (a) organic compounds containing one or more hydroxy groups and having molecular weights of from 62 to 6000, (b) organic compounds containing 2 or more aromatically-bound amino groups and having molecular weights of from 108 to 6000, (c) organic compounds containing 2 or more aliphatically-bound amino groups and having molecular weights of from 400 to 6000, (d) plasticizers, (e) water, and (f) mixtures thereof to form a suspension of polyadduct-coated, stabilized polyisocyanate in the liquid medium.

433041

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1244492