Process for the preparation of polyisocyanurate dispersions and

Details Process for the preparation of polyisocyanurate dispersions and Process for the preparation of polyisocyanurate dispersions and

1981-01-19

1982-11-16

Cockeram, H. S.

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

Synthetic resins

Cellular products or processes of preparing a cellular...

252182, 521160, 521161, 521902, 528 49, 528 73, 544193, 544221, 524377, 524386, 524590, C08G 1814, C08G 1875, C08G 1877

Patent

active

043595413

ABSTRACT:
Polyisocyanurate polymers are prepared by polymerization of polyisocyanates in organic solvents employing trimerization catalysts. The polyisocyanates are reacted with monofunctional active hydrogen compounds prior to polymerization or subsequent to the polymerization. These polymers may be dispersed in polyols for the preparation of cellular and non-cellular polyurethane products having improved physical properties.

REFERENCES:
patent: 3280066 (1966-10-01), France et al.
patent: 3645979 (1972-02-01), Liebsch et al.
patent: 3652424 (1972-03-01), Jackson et al.
patent: 3996223 (1976-12-01), Gupta et al.
patent: 4125491 (1978-11-01), Gorman et al.
patent: 4255569 (1981-03-01), Mueller et al.

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