公开(公告)号：US10316207B2

公开(公告)日：2019-06-11

申请号：US15539370

申请日：2015-12-16

Applicant: KAO CORPORATION

Inventor： Kaname Mitsuyoshi ,  Hirotaka Takeno ,  Takayuki Suzuki ,  Takahiro Yoshikawa

IPC: B41J2/01 ,  C09D11/38 ,  B41M5/00 ,  C09D11/324

Abstract: The present invention relates to a water-based ink that exhibits excellent ejection properties, and can be prevented from suffering from reduction in a dot size of the ink during a drying step thereof even when printed on a low-water absorbing recording medium, and is capable of obtaining printed characters or images having excellent uniformity, as well as an ink-jet printing method using the water-based ink. The water-based ink includes a pigment, a water-insoluble polymer, an acetylene glycol-based nonionic surfactant (A) having HLB of not less than 0 and not more than 5, a nonionic surfactant (B) having HLB of not less than 6 and not more than 20, a polyether-modified silicone (C) having a kinematic viscosity of not less than 30 mm2/s and not more than 190 mm2/s as measured at 25° C. and an organic solvent (D), in which a weighted mean value of a boiling point of the organic solvent (D) is not lower than 150° C. and not higher than 230° C.

公开(公告)号：US20130273470A1

公开(公告)日：2013-10-17

申请号：US13827967

申请日：2013-03-14

Applicant: KAO CORPORATION

Inventor： Norihiro Fukuri ,  Osamu Yamashita ,  Hiroki Kubo ,  Shoichi Murata ,  Takahiro Yoshikawa

IPC: G03G9/087

CPC classification number: G03G9/08755 ,  G03G9/09328 ,  G03G9/09371 ,  G03G9/09392

Abstract: The present invention relates to a toner for electrophotography including core-shell particles as a resin binder each including a core portion containing an amorphous resin (A) having a softening point of 105° C. or lower which is obtained by polycondensing a carboxylic acid component containing an alkenyl succinic acid with an alcohol component; and a shell portion containing an amorphous resin (B) obtained by polycondensing an alcohol component containing an aliphatic diol having 2 to 6 carbon atoms with a carboxylic acid component containing a trivalent or higher-valent polycarboxylic acid compound in an amount of 20 mol % or less. The toner for electrophotography according to the present invention is excellent in heat resistant storage property, low-temperature fusing property and durability.

Abstract translation: 本发明涉及一种电子照相用调色剂，其包括作为树脂粘合剂的核 - 壳颗粒，每个核 - 壳颗粒包含含有软化点为105℃或更低的无定形树脂（A）的核心部分，其通过使羧酸组分 含有烯醇琥珀酸与醇组分; 和含有通过将含有2〜6个碳原子的脂肪族二醇的醇成分与含有20摩尔％以上的3价以上的多元羧酸化合物的羧酸成分缩聚得到的无定形树脂（B）的壳部，或 减。 本发明的电子照相用调色剂具有优异的耐热储存性，低温熔融性和耐久性。

公开(公告)号：US09128399B2

公开(公告)日：2015-09-08

申请号：US13827967

申请日：2013-03-14

Applicant: KAO CORPORATION

Inventor： Norihiro Fukuri ,  Osamu Yamashita ,  Hiroki Kubo ,  Shoichi Murata ,  Takahiro Yoshikawa

IPC: G03G9/093 ,  G03G9/087

CPC classification number: G03G9/08755 ,  G03G9/09328 ,  G03G9/09371 ,  G03G9/09392

Abstract: The present invention relates to a toner for electrophotography including core-shell particles as a resin binder each including a core portion containing an amorphous resin (A) having a softening point of 105° C. or lower which is obtained by polycondensing a carboxylic acid component containing an alkenyl succinic acid with an alcohol component; and a shell portion containing an amorphous resin (B) obtained by polycondensing an alcohol component containing an aliphatic diol having 2 to 6 carbon atoms with a carboxylic acid component containing a trivalent or higher-valent polycarboxylic acid compound in an amount of 20 mol % or less. The toner for electrophotography according to the present invention is excellent in heat resistant storage property, low-temperature fusing property and durability.

Abstract translation: 本发明涉及一种电子照相用调色剂，其包括作为树脂粘合剂的核 - 壳颗粒，每个核 - 壳颗粒包含含有软化点为105℃或更低的无定形树脂（A）的核心部分，其通过使羧酸组分 含有烯醇琥珀酸与醇组分; 和含有通过将含有2〜6个碳原子的脂肪族二醇的醇成分与含有20摩尔％以上的3价以上的多元羧酸化合物的羧酸成分缩聚得到的无定形树脂（B）的壳部，或 减。 本发明的电子照相用调色剂具有优异的耐热储存性，低温熔融性和耐久性。

公开(公告)号：US10655030B2

公开(公告)日：2020-05-19

申请号：US15738487

申请日：2016-06-24

Applicant: KAO CORPORATION

Inventor： Hirotaka Takeno ,  Yuki Wakabayashi ,  Kaname Mitsuyoshi ,  Takahiro Yoshikawa

IPC: C09D11/40 ,  C09D11/30 ,  B41J2/21 ,  C09D11/033 ,  C09D11/322 ,  C09D11/102 ,  B41M5/00 ,  C09D11/037

Abstract: The present invention relates to a water-based ink including a pigment, a water-insoluble polymer, an organic solvent and a surfactant, in which the organic solvent includes at least a glycol ether which has a viscosity of from 2.0 to 7.0 mPa·s and a vapor pressure from 0.01 to 7.0 hPa as measured at 20° C., and a content of a glycol ether having a viscosity of not less than 6.0 mPa·s as measured at 20° C. as a component of the glycol ether in the water-based ink is from 0 to 5% by mass; the surfactant includes a silicone-based surfactant and a content of the silicone-based surfactant in the water-based ink is from 0.005 to 0.3% by mass; a content of the organic solvent in the water-based ink is from 25 to 50% by mass; and a content of a high-boiling organic solvent in the water-based ink is not more than 5% by mass, an ink set for ink-jet printing including two or more kinds of water-based inks which are each constituted of the aforementioned water-based ink, and an ink-jet printing method including the steps of ejecting the aforementioned water-based ink onto a printing medium, and further ejecting the water-based ink onto the printing medium to overstrike the water-based ink onto the water-based ink that has been ejected onto the printing medium in the previous step. The water-based ink of the present invention is excellent in continuous ejection properties, and is capable of obtaining good printed materials that are free of roller transfer contamination and intercolor bleeding owing to overstriking of the inks even when printed on a non-water absorbing printing medium.

公开(公告)号：US09557667B2

公开(公告)日：2017-01-31

申请号：US14760886

申请日：2014-01-14

Applicant: KAO CORPORATION

Inventor： Takahiro Yoshikawa ,  Shoichi Murata

IPC: G03G9/087 ,  G03G9/08 ,  C08J3/05 ,  C08J3/16

CPC classification number: G03G9/0806 ,  C08J3/05 ,  C08J3/16 ,  C08J2367/02 ,  G03G9/087 ,  G03G9/08755

Abstract: The present invention relates to a process for producing a resin particle dispersion, including a step (1) of mixing a polyester resin and a basic aqueous solution to obtain a resin neutralized product; and a step (2) of adding an aqueous medium to the resin neutralized product obtained in the step (1) to emulsify the resin neutralized product, in which a concentration of an ester group in the polyester resin is from 6.3 to 12 mmol/g, a pH of the basic aqueous solution as measured at 25° C. is from 8.5 to 13.5, and a content of an organic solvent in the resin neutralized product is not more than 10% by mass; and a process for producing a toner for development of electrostatic images, including steps of aggregating and coalescing the resin particles in the obtained resin particle dispersion. The present invention provides a process for producing a dispersion of resin particles having a small particle size and a narrow particle size distribution, and a process for producing a toner that has a narrow particle size distribution and is excellent in dot reproducibility and charge stability.

Abstract translation: 本发明涉及一种树脂颗粒分散体的制造方法，其包括将聚酯树脂和碱性水溶液混合以获得树脂中和产物的步骤（1） 和向上述工序（1）得到的树脂中和物中添加水性介质的步骤（2），使聚酯树脂中的酯基浓度为6.3〜12mmol / g的树脂中和物乳化 在25℃下测定的碱性水溶液的pH为8.5〜13.5，树脂中和物中的有机溶剂的含量为10质量％以下。 以及用于生产用于静电图像显影的调色剂的方法，包括在所获得的树脂颗粒分散体中聚集和聚结树脂颗粒的步骤。 本发明提供一种制造粒径小，粒度分布窄的树脂粒子的分散液的制造方法以及粒径分布窄，点重现性和电荷稳定性优异的调色剂的制造方法。