Dioxazine pigments

Details Dioxazine pigments Dioxazine pigments

1982-10-28

1985-07-02

Raymond, Richard L.

Organic compounds -- part of the class 532-570 series

Organic compounds

Chalcogen in the nitrogen containing substituent

8855, C07D49822

Patent

active

045269637

ABSTRACT:
Disclosed are dioxazine compounds of formula I ##STR1## in which each R, independently, is C.sub.1-4 alkyl, their production and use as pigments.

REFERENCES:
patent: 2026092 (1935-12-01), Kranzlein et al.
patent: 3912732 (1975-10-01), Burdeska et al.
patent: 4400504 (1983-08-01), Harms et al.
patent: 4459233 (1984-07-01), Fabian et al.
Venkataraman, The Chemistry of Synthetic Dyes, vol. V, Academic Press, New York, (1971), pp. 419-427.

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