Chemistry of carbon compounds – Miscellaneous organic carbon compounds
Patent
1979-04-03
1980-12-30
Cockeram, H. S.
Chemistry of carbon compounds
Miscellaneous organic carbon compounds
252356, 252357, 252384, 260 304R, 260465H, 521137, 528 75, C08K 506, C08G 1814, C08G 1863, C07C12132
Patent
active
042422493
ABSTRACT:
This invention relates to polymer/polyols prepared from an ethylenically unsaturated monomer or a mixture of such monomers and characterized by the utilization, in the preparation thereof, of certain preformed stabilizers tailored to the monomer system employed, a method of preparing such polymer/polyols, and to the preformed stabilizers themselves. In general, the stabilizer, compatible with the polyol portion of the polymer/polyol, comprises a copolymer of an anchor portion consisting of an ethylenically unsaturated monomer or mixture of such monomers and a solvatable portion consisting of a propylene oxide polymer having a number average molecular weight of at least 800. The resulting polymer/polyols are stable, fluid, essentially free from scrap and seeds as produced and contain relatively small polymer particles. In accordance with one aspect of this invention, the polymer particles are essentially spherical in shape.
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Armstrong George H.
Simroth Donald W.
Van Cleve Russell
Cockeram H. S.
Gallagher Richard J.
Union Carbide Corporation
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