Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Cellular products or processes of preparing a cellular...
Patent
1977-05-17
1978-10-10
Cockeram, H.S.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Cellular products or processes of preparing a cellular...
260 332R, 260859R, 528392, C08G 1814, C08G 1863, C08K 506
Patent
active
041195868
ABSTRACT:
Novel improved polymer/polyol compositions made by polymerizing, in the absence of any alkyl mercaptan, one or more ethylenically unsaturated monomer substantially free of bound halogen in situ in a blend of about 55 to about 95 wt. % of a polyol having a number average molecular weight not greater than about 4000 and from about 45 to about 5 wt. % of a polyol having a number average molecular weight of not less than about 5000 to form a highly stable dispersion of small polymer particles in said blend. The novel compositions are highly useful in the production of polyurethane products.
REFERENCES:
patent: RE28715 (1976-07-01), Stanberger
patent: RE29014 (1976-10-01), Pizzini et al.
patent: RE29118 (1977-01-01), Stanberger
patent: 3652639 (1972-03-01), Pizzini et al.
patent: 3655553 (1972-04-01), DeWald
patent: 3953393 (1976-04-01), Ramlow et al.
Kuryla et al., Polymer Polyols, Journal of Cellular Plastics, Mar. 1966, pp. 1-3.
Schildknecht, Vinyl and Related Polymers, John Wiley, New York (1952) pp. 26, 106 and 107.
Cockeram H.S.
Trautlein Eugene C.
Union Carbide Corporation
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