Diazo dyestuff compounds and their use

Details Diazo dyestuff compounds and their use Diazo dyestuff compounds and their use

2006-06-15

2008-10-21

Klemanski, Helene (Department: 1793)

Compositions: coating or plastic

Coating or plastic compositions

Marking

C106S031490, C106S031580, C106S031590, C008S639000, C008S673000, C008S681000, C008S549000, C534S827000

Reexamination Certificate

active

07438753

ABSTRACT:
The present invention relates to a diazo dyestuff compound of the following formula (I)wherein, M is H, Na, or Li. The formula (I) compound is particularly suitable for using as a component in a black dye composition for ink-jet printing ink, and inkjet printing inks with good light-fastness are obtained.

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