US 11,987,714 B2
Copper phthalocyanine pigment composition and ink composition containing same
Shingo Saitou, Kamisu (JP); and Taichi Hashiguchi, Kamisu (JP)
Assigned to DIC CORPORATION, Tokyo (JP)
Appl. No. 17/253,844
Filed by DIC Corporation, Tokyo (JP)
PCT Filed Jun. 13, 2019, PCT No. PCT/JP2019/023443
§ 371(c)(1), (2) Date Dec. 18, 2020,
PCT Pub. No. WO2020/017197, PCT Pub. Date Jan. 23, 2020.
Claims priority of application No. 2018-135039 (JP), filed on Jul. 18, 2018.
Prior Publication US 2021/0261801 A1, Aug. 26, 2021
Int. Cl. C09D 11/037 (2014.01); C09B 67/20 (2006.01); C09B 67/46 (2006.01); C09D 11/033 (2014.01); C09D 11/08 (2006.01)
CPC C09D 11/037 (2013.01) [C09B 67/0067 (2013.01); C09B 67/009 (2013.01); C09D 11/033 (2013.01); C09D 11/08 (2013.01)] 2 Claims
OG exemplary drawing
 
1. A copper phthalocyanine pigment composition comprising:
a copper phthalocyanine pigment;
a copper phthalocyanine sulfonic acid derivative represented by general formula (I),

OG Complex Work Unit Chemistry
[in the formula, n represents an average number of substituents of 0.5 to 1.5];
a copper phthalocyanine derivative represented by general formula (II),

OG Complex Work Unit Chemistry
[in the formula, R1 represents a C1-C20 alkyl group, and n represents an average number of substituents of 0.5 to 1.5]; and
a copper phthalocyanine derivative represented by general formula (III),

OG Complex Work Unit Chemistry
[in the formula, R2, R3, R4, and R5 each independently represent a C1-C20 alkyl group, at least one of R2, R3, R4, and R5 is a C6-C2G alkyl group, and n represents an average number of substituents of 0.5 to 1.5],
wherein the content of the copper phthalocyanine sulfonic acid derivative represented by the general formula (I) is 2% by mass or more and 4% by mass or less in the entire pigment composition, the content of the copper phthalocyanine derivative represented by the general formula (II) is 5% by mass or more and 6% by mass or less in the entire pigment composition, and the content of the copper phthalocyanine derivative represented by the general formula (III) is 0.5% by mass or more and 5% by mass or less in the entire pigment composition.