3-Dicyanomethylidene-2,3-dihydrothiophen-1,1-dioxide derivatives

Details 3-Dicyanomethylidene-2,3-dihydrothiophen-1,1-dioxide derivatives 3-Dicyanomethylidene-2,3-dihydrothiophen-1,1-dioxide derivatives

1979-07-25

1981-07-28

Demers, Arthur P.

Harness for working animal

542449, 549 46, 549 53, C07D33352, C07D40906

Patent

active

042811155

ABSTRACT:
The present invention relates to disperse dyes containing a group of formula I, ##STR1## in which R.sub.1 signifies the atoms necessary to complete an arylene radical, their production and intermediates therefor.

REFERENCES:
patent: 3682899 (1972-08-01), Nishio et al.
patent: 3716531 (1973-02-01), Albrecht et al.
patent: 4127667 (1978-11-01), Rovnyak
patent: 4128647 (1978-12-01), Rovnyak

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