Azo dyes having utility for ink jet printers

Details Azo dyes having utility for ink jet printers Azo dyes having utility for ink jet printers

1995-09-14

1997-04-01

Higel, Floyd D.

Organic compounds -- part of the class 532-570 series

Organic compounds

Azo

534671, 534674, 534840, 534753, 534806, C09B 3106, C09B 3112, C09B 3130, C09B 3126

Patent

active

056166966

ABSTRACT:
A group of compounds comprising the reaction product of a hydroxy naphthylamine sulfonic acid with a diazotized compound comprising, an aromatic azo substituted Cleves Acid such that the diazotized compound is coupled with the hydroxy naphthylamine sulfonic acid ortho to the amine group. More particularly the compounds of the invention comprise a compound having the formula: ##STR1## wherein R.sub.1 is an aromatic azo radical, R.sub.2 is hydrogen or an aromatic azo group and R.sub.3 is amino, substituted amino or an aromatic azo group. The invention further includes inks made from such compositions and methods for using such inks in ink jet printers.

REFERENCES:
patent: 1822784 (1931-09-01), Oswald
patent: 1904822 (1933-04-01), Brightman
patent: 1975611 (1934-10-01), Mendoza
patent: 2270675 (1942-01-01), Stein et al.
patent: 3544326 (1970-12-01), Yoshida et al.
patent: 4752337 (1988-06-01), Kunde

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