Dyes incorporating annionic and cationic groups

Details Dyes incorporating annionic and cationic groups Dyes incorporating annionic and cationic groups

2006-06-27

2006-06-27

Einsmann, Margaret (Department: 1751)

Bleaching and dyeing; fluid treatment and chemical modification

Dye or potential dye composition, additive, treatment,...

Azo, acridone, or quinone dye

C008S682000, C008S683000, C008S919000, C534S580000, C534S604000

Reexamination Certificate

active

07066969

ABSTRACT:
The present invention relates to novel compounds of the formulae A, D1, D2, R1and n are as defined in the description the compounds being in an internal or external salt form, or mixtures of compounds (1) and (2), a process for their preparation and preparations containing them used for dyeing paper.

REFERENCES:
patent: 4273707 (1981-06-01), Pedrazzi
patent: 4363761 (1982-12-01), Pedrazzi
patent: 4367172 (1983-01-01), Pedrazzi
patent: 4544737 (1985-10-01), Stohr et al.
patent: 5772745 (1998-06-01), Gregory et al.
patent: 5929215 (1999-07-01), Pedrazzi
patent: 2004/0158049 (2004-08-01), Lehr et al.
patent: 2308376 (1997-06-01), None

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