Chromium mixed complex dyestuffs of phenyl-azo-pyrazole componen

Chemistry of carbon compounds – Miscellaneous organic carbon compounds – C-metal

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260147, C09B 4502, C09B 4506, C09B 4516, D06P 110

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active

042344794

ABSTRACT:
Unsymmetrical chromium mixed complex dyestuffs of the formula ##STR1## wherein R.sub.1 and R.sub.2 denote C.sub.1 -C.sub.4 -alkyl, nitrile, carbonamide or X-Z, X denotes a direct bond or a bridge member to a C atom of the rings A, B, C or D or to a 3-C atom of the pyrazoles and Z denotes SO.sub.3 H, COOH or OSO.sub.3 H and A, B, C and D can possess further substituents, are suitable for the dyeing and printing of nitrogen-containing fibrous materials in yellow shades.

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patent: 2832760 (1958-04-01), Zickendraht et al.
patent: 2937165 (1960-05-01), Feiss
patent: 3062806 (1962-11-01), Biedermann et al.
patent: 3621006 (1971-11-01), Jirou et al.
patent: 4029643 (1977-06-01), Koiso et al.

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