WATER-BASED INK FOR INK-JET RECORDING

Title:

WATER-BASED INK FOR INK-JET RECORDING

Document Type and Number:

WIPO Patent Application WO/2017/030100

Kind Code:

A1

Abstract:

The present invention relates to: [1] a water-based ink for ink-jet recording which contains titanium oxide (A) and a pigment dispersant (B), wherein the pigment dispersant (B) comprises a constituent unit derived from an anionic-group-containing monomer (a) and a constituent unit derived from a poly(alkylene glycol) (meth)acrylate (b), the average number of moles of the alkylene oxide added in the poly(alkylene glycol) (meth)acrylate (b) being 15-100, the pigment dispersant (B) has an acid value of 100 to 400 mg-KOH/g, and the pigment dispersant (B) is contained in an amount of 0.3-18 parts by mass per 100 parts by mass of the titanium oxide (A); and [2] an ink-jet recording method which comprises using an ink-jet recorder to deliver the water-based ink described in [1] above to a recording medium, thereby making a record. With the present invention, it is possible to provide: a water-based ink for ink-jet recording which includes titanium oxide as a pigment and has excellent redispersibility; and an ink-jet recording method.

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Inventors:

II TOMOAKI (JP)
NARITA MASAYUKI (JP)
WATANABE KAZUKI (JP)

Application Number:

PCT/JP2016/073803

Publication Date:

February 23, 2017

Filing Date:

August 12, 2016

Export Citation:

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Assignee:

KAO CORP (JP)

International Classes:

C09D11/326; B41J2/01; B41M5/00

Domestic Patent References:

WO2014091923A1	2014-06-19
WO2016104260A1	2016-06-30

Foreign References:

JP2013091734A	2013-05-16
JP2013082885A	2013-05-09

Other References: