06451103 is referenced by 24 patents and cites 5 patents.

There is disclosed a self-dispersible aqueous pigment dispersion and preparing method thereof, the dispersion comprising an aqueous solution, particles of a pigment and a water-soluble pigment derivative, said particles being dispersed in the aqueous pigment dispersion in a concentration within the range from 2 to 25 wt. % based on the amount of the aqueous pigment dispersion, wherein a part of the water-soluble pigment derivative is adsorbed on the surface of the particles of the pigment to form dispersed particles comprising the particles of the pigment adsorbed by said part of the pigment derivative, and the remaining parts of the water-soluble pigment derivative are free in the dispersion without being adsorbed on the surface of the pigment in a concentration less than the critical flocculation concentration on which flocculation is initiated on said particles of the pigment dispersed under said concentration. The pigment dispersion has high dispersibility in an aqueous system and excellent dispersion stability over time, and is applicable to an inkjet recording liquid, which provides excellent light-resistance, water-resistance and hue of printed image, and simultaneously reveals excellent discharge stability at the nozzles of ink-jet printer.

Title
Self-dispersible aqueous pigment dispersion
Application Number
9/667499
Publication Number
6451103 (B1)
Application Date
September 22, 2000
Publication Date
September 17, 2002
Inventor
Akimitsu Mochizuki
Tokyo
US
Mikiya Kato
Tokyo
US
Tsukasa Iguchi
Tokyo
US
Toshiyuki Uemura
Tokyo
US
Agent
Oblon Spivak McClelland Maier & Neustadt P C
US
Assignee
Toyo Ink Mfg
US
IPC
C09D 17/00
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