Polyurethane foam prepared from a copolymer/polyol composition

Details Polyurethane foam prepared from a copolymer/polyol composition Polyurethane foam prepared from a copolymer/polyol composition

1980-02-19

1981-08-04

Welsh, Maurice J.

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521170, 521174, C08G 1814

Patent

active

042823315

ABSTRACT:
This invention relates to a novel process for producing polymer/polyols characterized by the use of specific amounts of particular monomer combinations and by maintaining a low monomer concentration throughout the reaction mixture during the process. The monomer combinations are acrylonitrile or methacrylonitrile and styrene or alpha-methyl styrene. The process produces novel polymer/polyols characterized by their convertibility to low density, water-blown polyurethane foams having reduced scorch and by the relatively small size of the polymer particles.

REFERENCES:
patent: 3304273 (1967-02-01), Stamberger
patent: 3383351 (1968-05-01), Stamberger
patent: 3385246 (1968-10-01), Harris
patent: 3407246 (1968-10-01), Harris
patent: 3418354 (1968-12-01), Wheeler
patent: 3523093 (1970-08-01), Stamberger
patent: 3652639 (1972-03-01), Pizzini et al.
patent: 3823201 (1974-07-01), Pizzini et al.

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