公开(公告)号：US20200024456A1

公开(公告)日：2020-01-23

申请号：US16320241

申请日：2017-07-26

Applicant: KAO CORPORATION

Inventor： Hironobu FUKUROI ,  Yasufumi UEDA ,  Yusuke SHIMIZU ,  Isao TSURU

IPC: C09B67/00 ,  C09D11/322 ,  C09D17/00 ,  C09B67/06 ,  C09B67/20 ,  C09B67/46

Abstract: The present invention relates to [1] a process for producing a fine organic pigment, including step 1 of kneading a mixture prepared by compounding a raw material organic pigment, a water-soluble inorganic salt and a water-soluble organic solvent; and step 2 of subjecting the kneaded mixture obtained in the step 1 to cleaning treatment with an aqueous solvent and then to filtration treatment, in which before or after kneading the mixture in the step 1 and before subjecting the kneaded mixture to filtration treatment in the step 2, a sulfonic acid salt dispersant is compounded in an amount of not less than 0.8 part by mass and not more than 8.0 parts by mass on the basis of 100 parts by mass of the raw material organic pigment; [2] a process for producing a dispersion, including step 3 of subjecting a pigment mixture containing the fine organic pigment obtained by the production process according to the above [1], an organic solvent and water to dispersion treatment; and [3] a process for producing an ink, including step 4 of mixing the dispersion obtained by the production process according to the above [2] with at least one medium selected from the group consisting of water and an organic solvent.

公开(公告)号：US20190264043A1

公开(公告)日：2019-08-29

申请号：US16349195

申请日：2017-11-13

Applicant: KAO CORPORATION

Inventor： Kazuki WATANABE ,  Ryuma MIZUSHIMA ,  Takahiro SATO ,  Yasufumi UEDA

IPC: C09D11/033 ,  C09D11/107

Abstract: The present invention relates to an aqueous gravure ink containing a pigment, a polymer, a water-soluble organic solvent, a surfactant and water, in which the water-soluble organic solvent contains a glycol ether having a boiling point of from 100 to 260° C., and a content of the glycol ether in the ink is from 1 to 10% by mass; a total content of the water-soluble organic solvent in the ink is not more than 15% by mass; the surfactant contains an acetylene glycol-based surfactant; and a content of water in the ink is from 50 to 70% by mass.

公开(公告)号：US20180009988A1

公开(公告)日：2018-01-11

申请号：US15539591

申请日：2015-12-22

Applicant: KAO CORPORATION

Inventor： Takahiro SATO ,  Yasufumi UEDA

IPC: C09B67/46 ,  C09D11/107 ,  C08J3/07 ,  B41J2/21 ,  C08J3/21 ,  C09D11/322 ,  C09D11/037

Abstract: The present invention relates to [1] a process for producing pigment-containing modified polymer particles, including the step of reacting pigment-containing polymer particles (A) containing a functional group and a compound (B) containing a reactive group capable of reacting with the functional group of the polymer particles (A) in a medium under such a condition that a ratio [(B)/(A)] of total moles of the reactive group of the compound (B) to total moles of the functional group of the polymer particles (A) is from 0.10 to 0.62; [2] a pigment water dispersion including an aqueous medium and the modified polymer particles produced by the aforementioned process which are dispersed in the aqueous medium; and [3] an ink including the aforementioned pigment water dispersion and an organic solvent. The modified polymer particles are free from formation of coarse particles upon production of pigment particles, so that an ink obtained by using the modified polymer particles can be prevented from suffering from increase in viscosity thereof when the ink is being concentrated by evaporation of water from the ink, and is excellent in rub fastness when printed on a low-water absorbing recording medium.

公开(公告)号：US20170362358A1

公开(公告)日：2017-12-21

申请号：US15539028

申请日：2015-12-15

Applicant: KAO CORPORATION

Inventor： Yuki OZAKI ,  Yasufumi UEDA ,  Takahiro SATO

IPC: C08F212/08 ,  C08F220/18 ,  C08G81/02 ,  C09D11/322

CPC classification number: C08F212/08 ,  C08F220/18 ,  C08F220/20 ,  C08F222/02 ,  C08G81/025 ,  C08J3/124 ,  C08J3/20 ,  C08J3/215 ,  C08J2333/08 ,  C08J2333/16 ,  C08L57/00 ,  C09B67/0022 ,  C09D11/322 ,  C09D133/064 ,  C09D135/02 ,  C08F2220/185 ,  C08F220/06 ,  C08F2220/286

Abstract: The present invention provides a process for producing a fine organic pigment which is capable of efficiently atomizing a raw material organic pigment, and excellent in productivity of the fine organic pigment. The present invention relates to a process for producing a fine organic pigment which includes the step of kneading a mixture prepared by compounding a raw material organic pigment, a water-soluble inorganic salt, a water-soluble organic solvent and a resin, in which the resin is a copolymer produced by copolymerizing an aromatic ring-containing ethylenically unsaturated monomer (A), a carboxy group-containing ethylenically unsaturated monomer (B) and an ethylenically unsaturated monomer (C) containing a polyethyleneoxide chain having an average molar number of addition of ethyleneoxide of not less than 1 and not more than 50.

公开(公告)号：US20220213334A1

公开(公告)日：2022-07-07

申请号：US17613132

申请日：2020-03-09

Applicant: KAO CORPORATION

Inventor： Yuki OZAKI ,  Yasufumi UEDA ,  Takuto MATSUZONO ,  Ryuma MIZUSHIMA

IPC: C09D11/033 ,  C09D11/037 ,  C09D11/108 ,  B41M1/10

Abstract: The present invention relates to an aqueous ink for plate-based printing, which contains the following components (A) to (C) and water: (A) not less than 1% by mass and not more than 15% by mass of a pigment; (B) not less than 1% by mass and not more than 12% by mass of pigment-free crosslinked polymer particles; and (C) not less than 1% by mass and not more than 15% by mass of a water-soluble organic solvent having a boiling point of not lower than 100° C. and not higher than 260°, and a plate-based printing method including the step of printing characters or images on a low-liquid absorbing printing medium using the aforementioned aqueous ink. The aqueous ink for plate-based printing according to the present invention hardly suffers from occurrence of tone jump and is excellent in anti-blocking properties even when printed on a low-liquid absorbing printing medium.

公开(公告)号：US20200248012A1

公开(公告)日：2020-08-06

申请号：US16635106

申请日：2018-07-27

Applicant: KAO CORPORATION

Inventor： Takayuki SUZUKI ,  Takako YAMAMOTO ,  Erika MAEKAWA ,  Yasufumi UEDA

IPC: C09D11/023 ,  C09D11/324 ,  C09D11/107 ,  C09D11/38

Abstract: The present invention relates to a polymer emulsion that is capable of exhibiting excellent rub fastness even when formed into a coating film or even when printed on a low-liquid absorbing printing medium, and a water-based ink for ink-jet printing which is excellent in ejection stability and antibleeding properties upon the ink-jet printing. The present invention provides [1] a polymer emulsion containing a polymer and water, in which the polymer is a random copolymer or a block copolymer which contains a constitutional unit derived from (a) at least one monomer selected from the group consisting of acrylic acid and methacrylic acid and a constitutional unit derived from (b) a hydrophobic vinyl monomer, and is in the form of a carboxy group-containing polymer having an acid value of 150 to 300 mgKOH/g; and the polymer emulsion further contains a formaldehyde-releasing compound; and [2] a water-based ink for ink-jet printing containing a pigment, the aforementioned polymer, a water-soluble organic solvent and water, in which the water-soluble organic solvent contains at least one compound selected from the group consisting of a polyhydric alcohol and a polyhydric alcohol alkyl ether, and a total content of the polyhydric alcohol and the polyhydric alcohol alkyl ether in the ink is not less than 18% by mass; and the water-based ink further contains a formaldehyde-releasing compound.

公开(公告)号：US20200156396A1

公开(公告)日：2020-05-21

申请号：US16635098

申请日：2018-07-27

Applicant: KAO CORPORATION

Inventor： Takayuki SUZUKI ,  Takako YAMAMOTO ,  Erika MAEKAWA ,  Yasufumi UEDA

IPC: B41M5/00 ,  C09D11/326 ,  C09D11/322 ,  C09D11/107 ,  C08J3/07 ,  C08F220/06 ,  C09D11/38 ,  C08F212/08 ,  C08F220/18 ,  C09C1/56 ,  C09C3/10

Abstract: The present invention relates to a pigment water dispersion containing a pigment, a crosslinked polymer and water, in which the crosslinked polymer is prepared by crosslinking a carboxy group-containing polymer with a crosslinking agent, and has an acid value of not less than 70 mgKOH/g and not more than 300 mgKOH/g; and the pigment water dispersion further contains a formaldehyde-releasing compound. The pigment water dispersion of the present invention is excellent in storage stability even when being stored under high-temperature conditions for a long period of time.

公开(公告)号：US20190039384A1

公开(公告)日：2019-02-07

申请号：US16076867

申请日：2017-02-02

Applicant: KAO CORPORATION ,  THINK LABORATORY CO., LTD.

Inventor： Yuta MATSUMOTO ,  Kazuki WATANABE ,  Yasufumi UEDA ,  Tatsuo SHIGETA

IPC: B41J2/21 ,  B41M5/50 ,  C09D11/40 ,  B41J11/00 ,  B41M7/00

Abstract: The present invention relates to an ink-jet printing method that is capable of obtaining good printed materials that are free of occurrence of color migration and deformation of a printing medium even when printed on a transparent resin printing medium using a water-based ink containing a white ink, and a black or chromatic ink. The present invention provides an ink-jet printing method including the step of ejecting a water-based ink onto a printing medium using a printing apparatus to print characters or images on the printing medium, said printing apparatus including an ink-jet printing head that ejects the water-based ink onto the printing medium that is transported in a feeding direction thereof; and an drying mechanism that is disposed on a downstream side in a feeding direction of the printing medium, in which the printing medium is in the form of a transparent resin printing medium, and the water-based ink includes a white ink, and a black or chromatic ink, and in which the drying mechanism blows a superheated steam that is heated to a temperature of 100 to 180° C. onto at least one of a printing surface and an opposite surface of the printing medium.

公开(公告)号：US20190039373A1

公开(公告)日：2019-02-07

申请号：US16077159

申请日：2017-02-02

Applicant: KAO CORPORATION ,  THINK LABORATORY CO., LTD.

Inventor： Yuta MATSUMOTO ,  Kazuki WATANABE ,  Yasufumi UEDA ,  Tatsuo SHIGETA

IPC: B41J2/135 ,  B41J11/02 ,  B41M5/00 ,  C09D11/322 ,  C09D11/40

Abstract: The present invention relates to an ink-jet printing apparatus that is capable of obtaining printed materials that are free of occurrence of color migration and have good appearance even when printed on a resin printing medium using a water-based ink, and an ink-jet printing method. The present invention provides an ink-jet printing apparatus including an ink-jet printing head that ejects a water-based ink onto a resin printing medium that is transported in a feeding direction thereof, and an under heater that heats the printing medium from a rear side surface of the printing medium opposed to a front side surface thereof which faces to the ink-jet printing head, in which the under heater is disposed at a position spaced at a distance of from 0.05 to 3.0 mm apart from the rear side surface of the printing medium upon printing, and an ink-jet printing method using the ink-jet printing apparatus.

公开(公告)号：US20180244932A1

公开(公告)日：2018-08-30

申请号：US15756341

申请日：2016-08-03

Applicant: THINK LABORATORY CO., LTD. ,  KAO CORPORATION

Inventor： Tatsuo SHIGETA ,  Ryuma MIZUSHIMA ,  Yuta MATSUMOTO ,  Yasufumi UEDA

IPC: C09D11/033 ,  C09D11/023 ,  C09D11/037 ,  C09D11/03

Abstract: Provided is an aqueous gravure ink that is environmentally friendly, allows high-resolution printing by virtue of its excellent highlight suitability, and is excellent in drying property. The aqueous gravure ink comprises: a pigment; a polymer; a water-soluble organic solvent; a surfactant; and water, in which the water-soluble organic solvent has a boiling point of 100° C. or more and 260° C. or less, in which a content of the water-soluble organic solvent in the aqueous gravure ink is 10 mass % or more and 35 mass % or less, and in which a content of the water in the aqueous gravure ink is 50 mass % or more and 70 mass % or less.