Polymer polyol dispersion from .alpha.,.beta. ethylenically unsa

Details Polymer polyol dispersion from .alpha.,.beta. ethylenically unsa Polymer polyol dispersion from .alpha.,.beta. ethylenically unsa

1987-03-09

1988-01-26

Welsh, Maurice J.

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

Synthetic resins

Cellular products or processes of preparing a cellular...

525404, 525539, 528 73, 528301, C08G 1814

Patent

active

047217332

ABSTRACT:
Stable, fluid polymer polyols made by the free radical polymerization of a monomer mixture of an .alpha.,.beta.-ethylenically unsaturated dicarboxylic acid anhydride and a copolymerizable monomer in an organic polyol medium of secondary hydroxyl terminated polyol are disclosed. In one embodiment, the polymer polyols form stable, acrylonitrile-free dispersions.

REFERENCES:
patent: 3304273 (1967-02-01), Stamberger
patent: 3383351 (1968-05-01), Stamberger
patent: 3523093 (1970-08-01), Stamberger
patent: 3652639 (1972-03-01), Pizzini et al.

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