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    NEAR-INFRARED (NIR) TRANSPARENT NEUTRAL BLACK SOLID SOLUTION PIGMENT
    6.
    发明公开
    NEAR-INFRARED (NIR) TRANSPARENT NEUTRAL BLACK SOLID SOLUTION PIGMENT 审中-公开

    公开(公告)号：US20240034885A1

    公开(公告)日：2024-02-01

    申请号：US18256579

    申请日：2021-12-20

    Applicant: SUN CHEMICAL B.V.

    Inventor： Nikolay VINOKUROV ,  Paul Pascal ROQUETTE ,  Paul BROWN ,  Till VOGEL ,  Andres Carlos GARCIA ESPINO

    IPC: C09B67/22 ,  C09B5/62 ,  C09D5/33 ,  C09D5/00 ,  C09D7/41

    CPC classification number: C09B67/0034 ,  C09B5/62 ,  C09D5/004 ,  C09D5/002 ,  C09D7/41

    Abstract: The present invention relates to a solid solution comprising (a) at least one compound according to formula (I), and (b) at least one compound according to formula (II), or at least one compound according to formula (III), or a mixture of at least one compound according to formula (II) and at least one compound according to formula (III), wherein R1 and R2 may, independently of one another, stand for —(CH2)n—X, wherein X stands for hydrogen, methyl, a C1-C5 alkoxyl, hydroxy, phenyl, C1-C5 alkylphenyl, C1-C5 alkoxyphenyl, hydroxyphenyl, halogenated phenyl, pyridyl, C1-C5 alkylpyridyl, C1-C5 alkoxypyridyl, halogenated pyridyl, pyridylvinyl or naphthyl; wherein n stands for 0, 1, 2, 3, 4 or 5; R3 and R4 may, independently of one another, stand for phenylene, C1-C5 alkylphenylene, C1-C5 alkoxyphenylene, hydroxyphenylene, halogenated phenylene, pyridinediyl, C1-C5 alkylpyridinediyl, C1-C5 alkoxy-pyridinediyl, halogenated pyridinediyl, anthraquinonediyl or naphthalenediyl, wherein the 2 nitrogen atoms bound to R3 according to formula (II) and (III) form a 5-membered or a 6-membered heterocycle with 2 atoms of an aromatic ring of R3; wherein the 2 nitrogen atoms bound to R4 according to formula (II) and (III) form a 5-membered or a 6-membered heterocycle with 2 atoms of an aromatic ring of R4; X1 to X8 may, independently from one another, stand for hydrogen, C1-C5 alkyl, C1-C5 alkoxy, hydroxy, phenyl or halide. The present invention further relates to a process for producing the solid solution. Furthermore, the present invention relates to a solid solution obtainable or obtained according to said process and to the use of the inventive solid solution, in particular as a NIR transparent black colorant in a NIR non-absorbing component.

    Method for producing quinacridone solid solution pigment, pigment dispersion, and inkjet ink
    9.
    发明授权
    Method for producing quinacridone solid solution pigment, pigment dispersion, and inkjet ink 有权

    公开(公告)号：US11773267B2

    公开(公告)日：2023-10-03

    申请号：US17745447

    申请日：2022-05-16

    Applicant: DAINICHISEIKA COLOR & CHEMICALS MFG. CO., LTD.

    Inventor： Naoto Kamata ,  Toshiyuki Hitotsuyanagi ,  Sachio Yoshikawa ,  Satoshi Minami

    IPC: C09B48/00 ,  C09D11/322 ,  C09B67/22 ,  C09D17/00

    CPC classification number: C09B67/0036 ,  C09B48/00 ,  C09D11/322 ,  C09D17/001 ,  C09D17/003

    Abstract: There is provided a technique for producing a quinacridone solid solution pigment, the technique making it possible to obtain a quinacridone solid solution pigment which produces a colored product having high chroma and a bluish hue, more preferably which has controlled particle diameters. Specifically, a method for producing a quinacridone solid solution pigment, the method including a crude quinacridone solid solution production step of subjecting a diarylaminoterepththalic acid and a dialkylarylaminoterephthalic acid to a co-cyclization reaction in polyphosphoric acid, thereby obtaining a water-containing crude quinacridone solid solution containing a solid solution of an unsubstituted quinacridone and a 2,9-dialkylquinacridone, the solid solution containing water, a drying step of drying the water-containing crude quinacridone solid solution to reduce the water content to less than 1% and obtain a powdery, crude quinacridone solid solution, and a pigmentation step of heating the powdery, crude quinacridone solid solution in a liquid medium that cannot dissolve the crude quinacridone solid solution.

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