Polytetramethylene ether urethane cured with 2,2'-diaminodipheny

Details Polytetramethylene ether urethane cured with 2,2'-diaminodipheny Polytetramethylene ether urethane cured with 2,2'-diaminodipheny

1976-02-05

1977-04-12

Rzucidlo, Eugene C.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 775AQ, 260 775AT, C08G 1810

Patent

active

040174646

ABSTRACT:
Polytetramethylene ether urethane having improved physical properties is produced by reacting polytetramethylene ether polyol with a toluene diisocyanate containing at least 50 percent 2,4 isomer, reacting at a temperature no greater than about 40.degree. C. to produce a prepolymer and curing the prepolymer with 2,2'-dithio dianiline having the formula ##STR1## at a temperature of 105.degree. C.

REFERENCES:
patent: 3036996 (1962-05-01), Kogon
patent: 3926919 (1975-12-01), Finelli

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