AZO PIGMENT DISPERSION, INK COMPOSITION USING SAME, INK FOR INKJET RECORDING, RECORDING METHOD, RECORDED MATERIAL, AND METHOD FOR STABILIZING INK FOR INKJET RECORDING DURING STORAGE

WIPO Patent Application WO/2012/011500

A1

Provided is a pigment dispersion, in which increases in particle diameter and viscosity are suppressed even after being exposed to a high temperature over time, and which has excellent light resistance. The pigment dispersion contains an azo pigment represented by formula (1) or a tautomer thereof and a polymer having an acid value and an amine value. The polymer has an acid value of 10 to 120 mgKOH/g and an amine value of 10 to 120 mgKOH/g. Further, the polymer is contained in an amount of 10 to 80% by mass of the total amount of the azo pigment and the like.

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HAYASHI SHINYA
TATEISHI KEIICHI

PCT/JP2011/066473

January 26, 2012

July 20, 2011

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FUJIFILM CORP (JP)
HAYASHI SHINYA
TATEISHI KEIICHI

C09B67/46; B41J2/01; B41M5/00; B41M5/50; B41M5/52; C07D403/14; C09B33/12; C09B67/00; C09B67/20; C09B67/48; C09D11/00; C09D11/322; C09D11/326; C09D11/38

JP2010013557A	2010-01-21
JP2010031215A	2010-02-12
JP2005255765A	2005-09-22
JP2007138092A	2007-06-07
JP2006104452A	2006-04-20
JP2009167303A	2009-07-30
JP2009167304A	2009-07-30
JPH08333538A	1996-12-17
JPH04139272A	1992-05-13

TAKAMATSU Takeshi et al. (JP)
Takamatsu 猛 (JP)

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