Magenta metal complex azo compounds and inks and their use...

Compositions: coating or plastic – Coating or plastic compositions – Marking

Reexamination Certificate

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C106S031480, C106S031500, C534S653000, C534S690000, C534S707000

Reexamination Certificate

active

07150782

ABSTRACT:
A metal chelate compound obtainable from contacting a transition metal salt with a compound of the Formula (1):wherein:x represents plural atoms required to form at least one optionally substituted 5- to 7-membered heterocyclic ring; andAr is an optionally substituted stilbene, acenaphthylene, phenanthrene or anthracene group carrying a hydroxy, amino or carboxy group adjacent to the —N═N— group shown in Formula (1) or 6-hydroxyquinoline where the hydroxy group is adjacent to the —N═N— group shown in Formula (1);provided that when the compound of Formula (1) is of Formula:that, p, the level of sulfonation, is not in the range 1 to 2. Also compositions, inks, printed substrates and inkjet cartridges.

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