AQUEOUS INK - TOAGOSEI CO LTD

Title:

AQUEOUS INK

Document Type and Number:

WIPO Patent Application WO/2005/007760

Kind Code:

A1

Abstract:

An aqueous ink is disclosed which contains a dispersing agent composed of a crosslinked copolymer which has excellent dispersibility of a coloring agent such as pigment and is capable of stably maintaining the dispersed state of a dispersoid in an aqueous medium for a long time. Specifically, the aqueous ink comprises a coloring agent, an aqueous medium, and a dispersing agent which is composed of a crosslinked polymer essentially containing (A) a crosslinkable monomer, (B) an aromatic group-containing monomer and (C) an ionic monomer.

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Inventors:

HAYASHI KATSUHIRO (JP)
MAEDA KEIJI (JP)
GOTO AKIHIRO (JP)
MORI YOSHIO (JP)

Application Number:

PCT/JP2004/010764

Publication Date:

January 27, 2005

Filing Date:

July 22, 2004

Export Citation:

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Assignee:

TOAGOSEI CO LTD (JP)
HAYASHI KATSUHIRO (JP)
MAEDA KEIJI (JP)
GOTO AKIHIRO (JP)
MORI YOSHIO (JP)

International Classes:

B41J2/01; B41M5/00; C09D11/00; C09D11/18; C09D11/322; C09D11/324; C09D11/326; C09D11/38; (IPC1-7): C09D11/00

Foreign References:

JP2003012994A	2003-01-15
JP2002527564A	2002-08-27
JP2000219749A	2000-08-08
JP2001207104A	2001-07-31

Other References: