Coloring of organic materials with asymmetric thioindigoid compo

Details Coloring of organic materials with asymmetric thioindigoid compo Coloring of organic materials with asymmetric thioindigoid compo

1974-01-09

1976-06-15

Jacobs, Lewis T.

Bleaching and dyeing; fluid treatment and chemical modification

Treatment of hides, skins, feathers and animal tissues

Tanning

8179, 260332, D06P 122

Patent

active

039634299

ABSTRACT:
Method of coloring a synthetic or semisynthetic organic high molecular weight material with a asymmetric thioindigoid compound having the formula ##SPC1##
Wherein R.sub.1, R.sub.2 and R.sub.3 may be the same or different and are selected from the group consisting of a hydrogen atom, chlorine atom, lower alkyl group, lower alkoxy group, cyclohexyl group, phenyl group, benzyl group and styryl group, the benzene nucleus of the phenyl and benzyl group may be optionally substituted with a methyl group or chlorine atom, R.sub.1 and R.sub.2 may together form a tetramethylene ring, R.sub.4 is a hydrogen atom or methyl group with the proviso that R.sub.4 is a methyl group when R.sub.1, R.sub.2 and R.sub.3 are each a hydrogen atom and R.sub.4 is a hydrogen atom when R.sub.1 is a methyl group and R.sub.2 and R.sub.3 are each a hydrogen atom. The colored organic high molecular weight materials exhibit brilliant nuance with characteristic fluorescence.

REFERENCES:
patent: 2096140 (1937-10-01), Stocker et al.
patent: 2882277 (1959-04-01), Mueller
patent: 3793341 (1974-02-01), Genta

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