Novel polyurethane curative

Details Novel polyurethane curative Novel polyurethane curative

1976-05-05

1978-05-16

Rzucidlo, Eugene C.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 22TN, 260 312N, 260 318G, 260 318R, 260 332R, 260 75NH, 260 75NQ, 260 775AM, 260 775AQ, 260 75NC, 260 775AC, C08G 1822

Patent

active

040898229

ABSTRACT:
A polyurethane elastomer exhibiting a low glass transition temperature is provided, which comprises the reaction product of (a) a polyurethane prepolymer having terminally reactive isocyanate groups, prepared by reaction of a polymeric diol with a stoichiometric excess of 2,4-tolylene diisocyanate, 2,6-tolylene diisocyanate or a mixture of tolylene diisocyanates containing a major proportion of the 2,4-isomer, with (b) from 80 to 110% of the stoichiometrically required amount of 2,6-dichloro-p-phenylene diamine, and (c) from about 0.01 to 1 part per hundred of prepolymer of a conventional polyurethane catalyst.

REFERENCES:
patent: RE28541 (1975-10-01), Ryan
patent: 2939851 (1960-06-01), Orchin
patent: 3462470 (1969-08-01), Emery et al.
patent: 3580875 (1971-05-01), Bianca
patent: 3629168 (1971-12-01), Ryan
patent: 3660326 (1972-05-01), Mallabar
patent: 3681291 (1972-08-01), Khan
patent: 3880809 (1975-04-01), Finelli

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