Compositions: coating or plastic – Coating or plastic compositions – Marking
Reexamination Certificate
2007-10-02
2007-10-02
Lorengo, J. A. (Department: 1755)
Compositions: coating or plastic
Coating or plastic compositions
Marking
C106S031890
Reexamination Certificate
active
11313785
ABSTRACT:
Disclosed is an aqueous ink comprising at least water, a plurality of water-soluble organic solvents and a coloring material. The coloring material is a pigment, and, it contains a pigment particle having at least one ionic group bonded to a surface of the pigment particle directly or via another atomic group. The plurality of water-soluble organic solvents have a good medium or good mediums for the pigment and a poor medium or poor mediums for the pigment. The poor medium does not solvate perfectly or substantially the pigment. The ionic group undergoes perfectly or substantially no ionic dissociation in the poor medium. Also, among the respective Ka values of the plurality of water-soluble organic solvents as determined by the Bristow method, the Ka value of the poor medium is maximum.
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Hakamada Shin-ichi
Imai Takashi
Iwata Tetsu
Nito Yasuhiro
Ogasawara Masashi
Faison-Gee Veronica
Fitzpatrick ,Cella, Harper & Scinto
Lorengo J. A.
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