Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Cellular products or processes of preparing a cellular...
Patent
1980-03-31
1981-08-11
Welsh, Maurice J.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Cellular products or processes of preparing a cellular...
260 324, 260 326N, 525123, 525127, 525129, 525455, 526341, 526342, 528 75, C08G 1814
Patent
active
042835003
ABSTRACT:
Novel improved polymer/polyisocyanate composition made by polymerizing acrylonitrile alone or with one or more ethylenically unsaturated monomers in situ in a polyisocyanate. The polyisocyanate comprises a diarylalkylene diisocyanate; a polymeric diarylalkylene polyisocyanate; a quasi-prepolymer of a diarylalkylene diisocyanate or a polymeric diarylalkylene diisocyanate with an active hydrogen organic compound having at least two active hydrogen atoms per molecule; a mixture of a diarylalkylene diisocyanate, its carbodiimide and its trifunctional trimeric cycloadduct; or a mixture of two or more such polyisocyanates, to form a highly stable dispersion of small polymer particles in said polyisocyante. The novel compositions are highly useful in the production of polyurethane products.
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Armstrong George H.
Critchfield Frank E.
Gerkin Richard M.
Coon Gerald L.
Gallagher Richard J.
Trautlein Eugene C.
Union Carbide Corporation
Welsh Maurice J.
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