Aqueous pigment ink composition

Details Aqueous pigment ink composition Aqueous pigment ink composition

1998-07-23

2000-08-08

Klemanski, Helene

Compositions: coating or plastic

Coating or plastic compositions

Marking

106 3165, 106472, 106478, C09D 1102

Patent

active

060996323

ABSTRACT:
Disclosed is an aqueous pigment ink composition comprising at least water and carbon black, wherein a surface oxygen content of said carbon black is not less than 0.07 in atom-numeral ratio based on carbon atom measured by an X-ray photoelectron spectroscopic method, and a combined value of a surface carboxyl group carbon content and a surface hydroxyl group carbon content of said carbon black, the both being measured by an X-ray photoelectron spectroscopic method, is not less than 0.5%. The aqueous pigment ink composition realizes smooth printing with an ink jet nozzle, and smooth writing with a fine pen tip and it has sufficient density. Further, the recorded traces obtained by using the ink composition is excellent in water resistance.

REFERENCES:
patent: 4808395 (1989-02-01), Yoshimura et al.
patent: 5184148 (1993-02-01), Suga et al.
patent: 5542969 (1996-08-01), Hirasa et al.
patent: 5968244 (1999-10-01), Ueda et al.

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