Polyisocyanurate polymer containing pendant urea groups, polyol

Details Polyisocyanurate polymer containing pendant urea groups, polyol Polyisocyanurate polymer containing pendant urea groups, polyol

1982-04-19

1983-05-31

Welsh, Maurice J.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Cellular products or processes of preparing a cellular...

252182, 524314, 524377, 525123, 528 49, 528 73, 544222, C08G 1814

Patent

active

043861679

ABSTRACT:
Polyisocyanurate polymers containing pendant urea groups are prepared by polymerization of polyisocyanates in organic solvents employing appropriate trimerization catalysts and then end-capping the polyisocyanurate polymer with ammonia or ammonium hydroxide. These end-capped polyisocyanurate polymers which contain pendant urea groups are dispersed in polyols to yield fine particulate dispersions. Cellular and non-cellular urethane products prepared using these dispersions displayed improved physical properties.

REFERENCES:
patent: 4125491 (1978-11-01), Gorman

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