Polyurethane foam prepared from high concentration-low viscosity

Details Polyurethane foam prepared from high concentration-low viscosity Polyurethane foam prepared from high concentration-low viscosity

1994-04-28

1995-05-16

Kight, III, John

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521110, 521124, 521129, 521131, 521174, 521176, C08J 904, C08J 914, C08L 7508, C08G 1848

Patent

active

054161231

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 amines. 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: 4689354 (1987-08-01), Ramlow et al.
patent: 4690956 (1987-09-01), Ramlow et al.
patent: 5300535 (1994-04-01), Takeyasu et al.
patent: 5324774 (1994-06-01), Nishikawa et al.

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