AQUEOUS PIGMENT DISPERSION FOR INKJET RECORDING, INK COMPOSITION FOR INKJET RECORDING AND METHOD FOR PRODUCING SAME

Title:

AQUEOUS PIGMENT DISPERSION FOR INKJET RECORDING, INK COMPOSITION FOR INKJET RECORDING AND METHOD FOR PRODUCING SAME

Document Type and Number:

WIPO Patent Application WO/2005/012443

Kind Code:

A1

Abstract:

Disclosed are an aqueous pigment dispersion for inkjet ink, a method for producing the same, and an ink composition for inkjet recording which mainly contains the aqueous pigment dispersion for inkjet ink. The method for producing the aqueous pigment dispersion for inkjet ink is characterized by comprising a kneading step wherein a mixture including a styrene resin, a quinacridone pigment, a phthalimidomethylated quinacridone compound, an alkali metal hydroxide and a wetting agent is kneaded for producing a solid colored kneaded material, and a dispersing step wherein the thus-obtained solid colored kneaded material is dispersed into an aqueous medium.

Inventors:

OKADA SHINICHI (JP)
TAKASHIMA KYOKO (JP)
HIBINO RYOTA (JP)

Application Number:

PCT/JP2004/011195

Publication Date:

February 10, 2005

Filing Date:

July 29, 2004

Export Citation:

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Assignee:

DAINIPPON INK & CHEMICALS (JP)
OKADA SHINICHI (JP)
TAKASHIMA KYOKO (JP)
HIBINO RYOTA (JP)

International Classes:

B41J2/01; B41M5/00; C09B67/22; C09B67/46; C09C3/10; C09D11/00; C09D11/322; C09D17/00; (IPC1-7): C09D11/00; B41J2/01; B41M5/00; C09C3/10; C09D17/00

Foreign References:

JP2000191974A	2000-07-11
JP2004026927A	2004-01-29
JP2004043791A	2004-02-12
JP2004091590A	2004-03-25

Other References: