COPPER PHTHALOCYANINE PIGMENT COMPOSITION AND INK COMPOSITION CONTAINING SAME

WIPO Patent Application WO/2019/124050

A1

The problem to be solved by the present invention is to provide a copper phthalocyanine pigment composition that exhibits an excellent redissolvability and a good viscosity (initial viscosity, viscosity with elapsed time) with glycol ether inks. This problem is solved by providing a copper phthalocyanine pigment composition characterized by comprising a β-form copper phthalocyanine pigment and a pigment derivative represented by formula (I) [in the formula, R1, R2, R3, and R4 each independently represent a hydrogen atom or a C1 to C20 alkyl group, and at least one of R1, R2, R3, and R4 is a C6 to C20 alkyl group].

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SAITOU SHINGO (JP)
HASHIGUCHI TAICHI (JP)

PCT/JP2018/044512

June 27, 2019

December 04, 2018

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DAINIPPON INK & CHEMICALS (JP)

C09B67/20; C09B47/24; C09B47/26; C09D11/033; C09D11/037; C09D11/08

WO2015015832A1

2015-02-05

JP2004175975A	2004-06-24
JPH09506922A	1997-07-08
JPH01203472A	1989-08-16
JPH01144476A	1989-06-06
JPH01144475A	1989-06-06
JPS5233922A	1977-03-15
JP2010533744A	2010-10-28

OGAWA Shinji (JP)

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