Lightfast colorant and lightfast ink composition including...

Details Lightfast colorant and lightfast ink composition including... Lightfast colorant and lightfast ink composition including...

2006-10-24

2006-10-24

Powers, Fiona T. (Department: 1626)

Compositions: coating or plastic

Coating or plastic compositions

Marking

C106S031500, C106S031510, C106S031520, C534S783000, C534S812000, C534S829000, C534S865000, C534S874000, C552S212000

Reexamination Certificate

active

07125443

ABSTRACT:
A lightfast colorant and a lightfast ink composition include a lightfast colorant that is derived by covalently binding a benzophenone derivative and a conventional colorant and that imparts effective lightfastness and long-term storage stability to an ink composition that is prepared with the same.

REFERENCES:
patent: 4911732 (1990-03-01), Neumann et al.
patent: 5075429 (1991-12-01), Yamamoto et al.
patent: 1 006 161 (2000-06-01), None
patent: 01-97689 (1989-04-01), None
patent: 05-255604 (1993-10-01), None

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