Low viscosity copolymer polyisocyanates

Details Low viscosity copolymer polyisocyanates Low viscosity copolymer polyisocyanates

1987-11-16

1988-09-20

Welsh, Maurice J.

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

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

524714, 525126, C08L 3504

Patent

active

047726580

ABSTRACT:
Disclosed are novel polymer/polyisocyanate compositions. The compositions are prepared by the in-situ polymerization of at least one ethylenically unsaturated monomer in an organic polyisocyanate and in the presence of an adduct formed from the reaction of an excess of a carbodiimide-free polyisocyanate and a hydroxyl containing ethylenically unsaturated monomer.
The graft polyisocyanates find particular utility in the making of molded polyurethane resins.

REFERENCES:
patent: 3422165 (1969-01-01), Brotherton et al.
patent: 3968089 (1976-07-01), Cuscurida et al.
patent: 4283500 (1981-08-01), Armstrong et al.
patent: 4332716 (1982-06-01), Shah
patent: 4695596 (1987-09-01), Berkowitz

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