Disazo and trisazo compounds having a 3-pyridinium or substitute

Details Disazo and trisazo compounds having a 3-pyridinium or substitute Disazo and trisazo compounds having a 3-pyridinium or substitute

1978-03-08

1980-07-22

Higel, Floyd D.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260146R, 260146D, 260146T, 260147, 260153, 260156, C09B 3520, C09B 3522, C09B 3524, C09B 3532

Patent

active

042138973

ABSTRACT:
Sulfo group-free basic disazo and trisazo dyes of the formula ##STR1## wherein R is hydrogen; unsubstituted C.sub.1-4 alkyl; C.sub.2-4 -alkyl monosubstituted by hydroxy, the hydroxy being on other than the .alpha.-carbon atom; di-(C.sub.1-4 alkyl)amino or --CH.sub.2).sub.n Ko,

REFERENCES:
patent: 3852261 (1974-12-01), Steinemann

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