Dimethine dyestuffs, their preparation and their use for dyeing

Details Dimethine dyestuffs, their preparation and their use for dyeing Dimethine dyestuffs, their preparation and their use for dyeing

1981-03-19

1982-12-28

Demers, Arthur P.

Harness for working animal

542430, 542431, 542453, 532458, 542465, 542466, 542467, C07D40106, C07D41306, C07D41706

Patent

active

043663141

ABSTRACT:
Styryl dyestuffs of the general formula ##STR1## wherein Het represents a pyridinium radical having the structure ##STR2## R and R.sup.1 independently of one another designate lower alkyl or alkenyl groups, which can be substituted by non-ionic radicals,

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Hora et al., J. Indian Chem. Soc. 49 (1972), No. 9, pp. 901-905.
Kramer et al., J. Org. Chem. 39 (1974), No. 21, pp. 3132-3136.

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