公开(公告)号：US20210163767A1

公开(公告)日：2021-06-03

申请号：US16972419

申请日：2019-04-02

Applicant: KAO CORPORATION

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

IPC: C09D11/037 ,  C09D11/108 ,  C09D11/107

Abstract: The present invention relates to an aqueous gravure ink containing a pigment, 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 100 to 260° C.; the surfactant contains a silicone-based surfactant containing a specific constitutional unit; a content of the water-soluble organic solvent in the ink is 1 to 10% by mass; and a content of water in the ink is 50 to 80% by mass. This ink exhibits a less burden on the environments, and is excellent in optical density and drying properties.

公开(公告)号：US20210163765A1

公开(公告)日：2021-06-03

申请号：US17268029

申请日：2019-10-18

Applicant: KAO CORPORATION

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

IPC: C09D11/023 ,  C09D11/033 ,  C09D11/108 ,  B41M1/30 ,  B41M1/10

Abstract: The present invention provides an aqueous ink for plate-based printing which is excellent in transfer properties and substrate adhesion properties even against a low-liquid absorbing printing medium, and a plate-based printing method using the aqueous ink. The present invention relates to [1] an aqueous ink for plate-based printing which contains pigment-containing crosslinked water-insoluble polymer particles A, pigment-free water-insoluble polymer particles B, an organic amine compound, not less than 1% by mass and not more than 30% by mass of a water-soluble organic solvent having a boiling point of not lower than 100° C. and not higher than 260° C., and water, and [2] 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.

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：US20210388224A1

公开(公告)日：2021-12-16

申请号：US17291036

申请日：2019-12-03

Applicant: KAO CORPORATION

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

IPC: C09D11/037 ,  C09D5/14 ,  C09D11/03 ,  C09D11/106

Abstract: The present invention relates to an aqueous gravure ink containing pigment particles A, polymer particles B and water, the aqueous gravure ink being capable of satisfying at least one of the following requirements 1 and 2: Requirement 1: an average particle size of whole particles in the aqueous gravure ink is not less than 150 nm and not more than 500 nm, and a polydispersity index in a particle size distribution of the whole particles is not less than 0.10 and not more than 0.30; and Requirement 2: an average particle size of the pigment particles A is not less than 140 nm and not more than 550 nm, and a polydispersity index in a particle size distribution of the pigment particles A is not less than 0.08 and not more than 0.32, and an average particle size of the polymer particles B is not less than 30 nm and not more than 220 nm, and a polydispersity index in a particle size distribution of the polymer particles B is not less than 0.08 and not more than 0.32. The aqueous gravure ink of the present invention is excellent in storage stability and is capable of providing a printed material that is excellent in rub fastness and adhesion properties.