PIGMENT DISPERSANT COMPOSITION, PRODUCTION METHOD THEREFOR, PIGMENT DISPERSION, AND ACTINIC-RAY-CURABLE INK-JET INK

WIPO Patent Application WO/2022/050017

A1

An environmentally friendly pigment dispersant composition which can be relatively easily produced is provided, the pigment dispersant composition including a pigment dispersant mainly consisting of a vinyl-monomer-derived constituent unit and, despite this, having a greatly reduced volatile-ingredient content. With this pigment dispersant composition, it is possible to produce a pigment dispersion and an ink which have excellent pigment dispersibility. This pigment dispersant composition comprises a polyglycol component and a polymer component having a constituent unit (1) derived from a macromonomer represented by general formula (1) (R represents a hydrogen atom or a methyl group, R1 represents CH2CH2 or CH2CH2OCH2CH2, and m+n is 20-100) and a constituent unit (2) derived from a functional-group-containing vinyl monomer, wherein the polyglycol component is a poly(alkylene glycol), etc., the content of organic compounds having a boiling point of 250°C or lower being 1 mass% or less.

SHIMANAKA HIROYUKI (JP)
MURAKAMI YOSHIKAZU (JP)
KAMABAYASHI JUN (JP)
FUJITA TOSHIYASU (JP)
ARAI KAZUTAKA (JP)
YOSHIKAWA SACHIO (JP)

PCT/JP2021/029732

March 10, 2022

August 12, 2021

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DAINICHISEIKA COLOR CHEM (JP)

C09D17/00; B41J2/01; B41M5/00; C09B67/20; C09B67/46; C09D11/326; C09D11/38

WO2014091923A1

2014-06-19

JP2010084037A	2010-04-15
JP2019509369A	2019-04-04
JP2009024165A	2009-02-05
JP2006273974A	2006-10-12
JP2019157077A	2019-09-19
JP2013177580A	2013-09-09

See also references of EP 4209559A4

KONDO Rieko et al. (JP)

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