Polymer-polyol, process for preparation thereof and uses thereof

Details Polymer-polyol, process for preparation thereof and uses thereof Polymer-polyol, process for preparation thereof and uses thereof

1992-10-14

1994-06-28

Kight, III, John

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...

524761, 524765, C08K 506, C08L 2504, C08L 2516, C08L 3318

Patent

active

053247744

ABSTRACT:
High concentration-low viscosity polymer-polyols are prepared by polymerizing mixtures of acrylonitrile and styrene in polyols, which are free of any polymerizable carbon-carbon double bond, in the presence of alkyl-substituted tertiary mines. Without use, as a dispersion stabilizer, of organic compounds which have a polymerizable carbon-carbon double bond and terminal hydroxyl groups, there can be obtained polymer-polyols which have a concentration of the polymer of 33-60 wt % and a glass transition temperature of the polymer of 90.degree.-120.degree. C.

REFERENCES:
patent: 3953393 (1976-04-01), Ramlow et al.
patent: 4661531 (1987-04-01), Davis et al.
patent: 4690956 (1987-06-01), Ramlow et al.

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