Condensation product from phenothiazine and p-nitrosophenol, pro

Details Condensation product from phenothiazine and p-nitrosophenol, pro Condensation product from phenothiazine and p-nitrosophenol, pro

1978-10-30

1980-08-19

Randolph, John D.

Bleaching and dyeing; fluid treatment and chemical modification

Dye or potential dye composition, additive, treatment,...

Sulfur dye or vat dye

544 37, C09B 2100, C09B 4906, C07D27918

Patent

active

042182190

ABSTRACT:
Green sulfur dyestuff is produced by reacting phenothiazine in sulfuric acid with an oxidizing agent, condensing the oxidized phenothiazine with p-nitrosophenol and thionating with sulfur and sodium sulfide the condensate in a bake or reflux process.

REFERENCES:
patent: 966092 (1910-08-01), Herz
patent: 1128370 (1915-02-01), Schmidt et al.
patent: 1867863 (1932-07-01), Muth
Lubs, The Chemistry of Synthetic Dyes and Pigments, pp. 321 to 323, Reinhold Pub. Corp., NY (1955).
Dutt, J. Chem. Soc., vol. 125, pp. 802 to 807 (1924).
Hackh's Chemical Dictionary, Fourth Ed., p. 648, McGraw-Hill (NY), 1969.
Beilsteins Handbuch der Organischen Chemie, Mainwerke, vol. 27, 4th Ed., pp. 63, 64, 65 and 67-68, System No. 4198, Verlag Von Julius Springer, Berlin, Germany (1937).
Beilsteins Handbuch der Organischen Chemie, 4th Ed., Erstes Erganzungswerke, p. 226, System No. 4198, Verlag Von Julius Springer, Berlin, Germany (1938).

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