Organic compounds -- part of the class 532-570 series – Organic compounds – Azo
Patent
1986-07-29
1991-06-11
Higel, Floyd D.
Organic compounds -- part of the class 532-570 series
Organic compounds
Azo
8919, 162162, 534604, 534605, 534607, 534608, 534771, 534772, 534773, 534653, C09B 4402, C09B 4408, D06P 141, D06P 108
Patent
active
050233246
ABSTRACT:
Disazo and trisazo compounds free of sulfo groups which contain 6-hydroxy-4-methyl-3-N-pyridiniumpyridone-2 coupling component radicals, the preferred compounds being of the formula ##STR1## wherein R is a tetrazo component radical,
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Higel Floyd D.
Kassenoff Melvyn M.
Sandoz Ltd.
Sharkin Gerald D.
Vila Richard E.
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