Biscationic disazo and trisazo compounds having optionally furth

Details Biscationic disazo and trisazo compounds having optionally furth Biscationic disazo and trisazo compounds having optionally furth

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,

REFERENCES:
patent: 3501453 (1970-03-01), Steinemann
patent: 3518247 (1970-06-01), Altermatt et al.
patent: 3852261 (1974-12-01), Steinemann
patent: 3869441 (1975-03-01), Hughes
patent: 3956265 (1976-05-01), Leng et al.
patent: 3998803 (1976-12-01), Burkhard et al.
patent: 4087244 (1978-05-01), Greve et al.
patent: 4167509 (1979-09-01), Parton

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