Polymer/polyisocyanate compositions, processes for making same a

Details Polymer/polyisocyanate compositions, processes for making same a Polymer/polyisocyanate compositions, processes for making same a

1980-12-10

1982-06-01

Cockeram, H. S.

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

Synthetic resins

Cellular products or processes of preparing a cellular...

525127, 525129, 528 75, 524109, 524195, 524197, 524377, 524714, 524752, 524754, 524762, 524871, 524873, C08G 1814, C08G 1863, C08K 505, C08K 516

Patent

active

043327168

ABSTRACT:
Novel polymer/polyisocyanate compositions made by polymerizing at least one ethylenically unsaturated monomer in situ in a blend of a first organic polyisocyanate and a stabilizer. The stabilizer comprises a polyoxyalkylene polyol having a number average molecular weight of at least 4000; an isocyanato terminated prepolymer formed by reacting the polyoxyalkylene polyol and a second organic polyisocyanate with the proviso that the isocyanato terminated prepolymer and the first organic polyisocyanate provide greater than 25 equivalents of isocyanato groups per equivalent of hydroxyl groups; a polymer/polyol formed using the polyoxyalkylene polyol; a polymer/prepolymer formed using the polyoxyalkylene polyol with the proviso indicated for the prepolymer above; or a modified polyol containing an ester group formed using the polyoxyalkylene polyol. The novel compositions provide highly stable dispersions of polymer particles in the first organic polyisocyanate and are highly useful in the production of polyurethane products.

REFERENCES:
patent: 3422165 (1969-01-01), Brotherton et al.
patent: 3654106 (1972-04-01), Wagner et al.
patent: 3823201 (1974-07-01), Pizzini et al.
patent: 3968089 (1976-07-01), Cuscurida et al.
patent: 4119586 (1978-10-01), Shah
patent: 4122049 (1978-10-01), Wagner
patent: 4148840 (1979-04-01), Shah

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