发明名称 |
PROCESS FOR PRODUCING WATER BASED PIGMENT DISPERSION FOR INK JET RECORDING |
摘要 |
A process is provided for producing aqueous pigment dispersions for ink-jet recording in which fine pigments are stably dispersed and such a state can be maintained for a long period of storing. Moreover, a process is provided for producing aqueous pigment dispersions for ink-jet recording in which the time required for production such as dispersing time is short, and the production efficiency is high. The process for producing aqueous pigment dispersions for ink-jet recording includes a first step of kneading (1) a styrene-acrylic type resin with a styrene type monomer unit of 50 to 90 mass %, and at least one unit selected from an acrylic monomer unit and methacrylic monomer unit, having an acid value of 50 to 300, (2) a pigment, (3) a basic compound, and (4) a humectant to produce a solid colored kneaded product, and a second step of dispersing the solid colored kneaded product in an aqueous medium comprising water or water and humectant.
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申请公布号 |
EP1655352(A1) |
申请公布日期 |
2006.05.10 |
申请号 |
EP20030817996 |
申请日期 |
2003.08.11 |
申请人 |
DAINIPPON INK AND CHEMICALS, INC. |
发明人 |
KAJI, HIDEAKI;KANEKO, KAZUHIRO;SMALL, RITSUKO;ARAKAWA, HIROMICHI;OKADA, SHINICHI;HARADA, HIROSHI;INOUE, SADAHIRO |
分类号 |
C09B67/04;C09B67/46;C09D11/00;C09D17/00;(IPC1-7):C09D11/00 |
主分类号 |
C09B67/04 |
代理机构 |
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代理人 |
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地址 |
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