公开(公告)号：US11220611B2

公开(公告)日：2022-01-11

申请号：US16626654

申请日：2018-07-09

Applicant: KAO CORPORATION

Inventor： Tomohiko Nagano ,  Kaname Mitsuyoshi ,  Tsuyoshi Egawa

IPC: C09D11/322 ,  C08K5/00 ,  C08K5/053 ,  C08K5/1515 ,  C08L33/08 ,  C08L33/10

Abstract: The present invention relates to [1] a water-based ink for ink-jet printing which can be prevented from suffering from increased viscosity and flocculation of the ink upon storage thereof even when used in the form of a system containing a large amount of a solvent, said water-based ink for ink-jet printing containing crosslinked polymer particles containing a pigment having an indanthrone skeleton, an organic solvent and water, in which a crosslinking rate of the crosslinked polymer is not less than 10 mol % and not more than 90 mol %, and a content of the organic solvent in the water-based ink is not less than 30% by mass and not more than 65% by mass, and [2] an ink-jet printing method including the steps of loading the water-based ink as described in the above [1] to an ink-jet printing apparatus, and ejecting the water-based ink in the form of droplets of the ink onto a printing medium to form characters or images on the printing medium.

公开(公告)号：US09376532B2

公开(公告)日：2016-06-28

申请号：US14758139

申请日：2013-12-27

Applicant: KAO CORPORATION

Inventor： Kyoichi Shirota ,  Tsuyoshi Egawa ,  Katsuhisa Inoue ,  Yasuyuki Mimura

IPC: C08G73/02 ,  C08G65/333 ,  C09B67/46 ,  G02B5/22 ,  C11D3/37

CPC classification number: C08G73/02 ,  C08G65/2609 ,  C08G65/3322 ,  C08G65/333 ,  C08G65/33303 ,  C08G73/0206 ,  C08G73/0226 ,  C09B67/0086 ,  C09B67/009 ,  C11D3/3723 ,  G02B5/223

Abstract: The present invention provides a novel quaternary ammonium salt compound that is excellent in atomization of a pigment dispersion and storage stability, a dispersant containing the quaternary ammonium salt compound, a use of the quaternary ammonium salt compound, and a process for producing the quaternary ammonium salt compound. The present invention relates to [1] a quaternary ammonium salt compound represented by the general formula (I); [2] a dispersant containing the compound of the above [1]; [3] a use of the compound of the above [1] for dispersing a pigment; and [4] a process for producing a quaternary ammonium salt compound represented by the general formula (I), including a step of reacting a halogenated alkyl ester compound represented by the general formula (II) with a polyamine compound represented by the general formula (III).

Abstract translation: 本发明提供了一种新颖的季铵盐化合物，其颜料分散体的雾化性和储存稳定性优异，含有季铵盐化合物的分散剂，季铵盐化合物的用途，以及季铵盐的制备方法 复合。 本发明涉及[1]由通式（I）表示的季铵盐化合物。 [2]含有上述[1]化合物的分散剂; [3]使用上述[1]的化合物分散颜料; 和[4]由通式（I）表示的季铵盐化合物的制备方法，包括使由通式（II）表示的卤代烷基酯化合物与通式（II）表示的多胺化合物 III）。

公开(公告)号：US11242466B2

公开(公告)日：2022-02-08

申请号：US16756084

申请日：2018-10-15

Applicant: KAO CORPORATION

Inventor： Tsuyoshi Egawa ,  Kaname Mitsuyoshi ,  Tomohiko Nagano

IPC: C09D11/40 ,  B41M5/00 ,  C09D11/108 ,  C09D11/322 ,  B41J2/21

Abstract: The present invention relates to an ink set for ink-jet printing which contains at least a water-based ink (I) and a water-based ink (II) in which the water-based ink (I) contains a pigment (A1) having a barbituric acid-derived structure, and the water-based ink (II) contains a diketopyrrolopyrrole pigment (A2), an ink-jet printing method using the ink set, and an ink-jet printed material.

公开(公告)号：US11535765B2

公开(公告)日：2022-12-27

申请号：US16756037

申请日：2018-10-15

Applicant: KAO CORPORATION

Inventor： Tsuyoshi Egawa ,  Kaname Mitsuyoshi ,  Shimpei Nishimura

IPC: C09D11/037 ,  C09D11/326 ,  C09D11/322 ,  C09D11/03 ,  B41M5/00 ,  B41J2/01

Abstract: The present invention relates to [1] a water-based ink containing an azomethine metal complex pigment (A), an aromatic group-containing polymer (B), an organic solvent (D) and water, in which a mass ratio of the azomethine metal complex pigment (A) to the aromatic group-containing polymer (B) [(A)/(B)] is not less than 1.4 and not more than 4, and the aromatic group-containing polymer (B) is a crosslinked polymer obtained by crosslinking an aromatic group-containing polymer (b) having an acid value of not less than 80 mgKOH/g and not more than 400 mgKOH/g with a water-insoluble polyfunctional epoxy compound (c), said water-based ink being excellent in storage stability and maintenanceability, and [2] a process for producing a pigment water dispersion liquid of particles of the aromatic group-containing polymer (B) containing the azomethine metal complex pigment (A).

公开(公告)号：US11459476B2

公开(公告)日：2022-10-04

申请号：US16764571

申请日：2018-12-20

Applicant: KAO CORPORATION

Inventor： Kaname Mitsuyoshi ,  Tsuyoshi Egawa ,  Tomohiko Nagano ,  Yusuke Shimizu

IPC: C09D17/00 ,  B41M5/00 ,  C09B55/00 ,  C09D11/033 ,  C09D11/037 ,  C09D11/322

Abstract: The present invention relates to [1] a process for producing a pigment water dispersion liquid of polymer particles containing an azomethine metal complex pigment (A), said process including the step of subjecting a mixture containing the azomethine metal complex pigment (A), an uncrosslinked aromatic group-containing polymer (b) and water to dispersion treatment using a medialess disperser at an accumulated input energy of not more than 5.0 kWh/kg, [2] a pigment water dispersion liquid containing an azomethine metal complex pigment (A) and a polymer dispersant (B), in which in an optical absorption spectrum of the pigment water dispersion liquid, a ratio of a maximum absorbance (A1max) in a wavelength range of not less than 440 nm and less than 465 nm to a maximum absorbance (A2max) in a wavelength range of not less than 420 nm and less than 440 nm [(A1max)/(A2max)] is not less than 1.000, and [3] a water-based ink for ink-jet printing, containing the aforementioned pigment water dispersion liquid.