公开(公告)号：US20240059918A1

公开(公告)日：2024-02-22

申请号：US18259523

申请日：2021-06-29

Applicant: KAO CORPORATION

Inventor： Tomohide YOSHIDA ,  Kosuke MUTO

IPC: C09D11/38 ,  C09D11/52

CPC classification number: C09D11/38 ,  C09D11/52

Abstract: A metallic fine particle-containing ink, including metallic fine particles A dispersed with a polymer B, a carboxylic acid C, and an amine D. The polymer B has at least one selected from the group consisting of an organic acid group and an organic base group, the carboxylic acid C has 1 or more and 6 or less carbon atoms, the amine D has 1 or more and 6 or less carbon atoms, and the metallic fine particle-containing ink has a content of the carboxylic acid C of 0.7% by mass or more and 15% by mass or less, and a content of the amine D of 0.7% by mass or more and 20% by mass or less.

公开(公告)号：US20240034896A1

公开(公告)日：2024-02-01

申请号：US18258238

申请日：2021-12-10

Applicant: KAO CORPORATION

Inventor： Tomohide YOSHIDA ,  Kosuke MUTO

IPC: C09D11/322 ,  C09D11/52 ,  B22F1/0545 ,  B22F1/107 ,  B22F9/24 ,  B22F1/142 ,  B41J2/01 ,  H01B1/22

CPC classification number: C09D11/322 ,  C09D11/52 ,  B22F1/0545 ,  B22F1/107 ,  B22F9/24 ,  B22F1/142 ,  B41J2/01 ,  H01B1/22 ,  B22F2304/054 ,  B22F2301/255 ,  B22F2998/10

Abstract: A metallic fine particle-containing ink, including a metal constituting the metallic fine particles comprising silver, the metallic fine particles contained in the ink having a volume average particle diameter DA of 20 nm or more and 50 nm or less, and the metallic fine particles contained in the ink having a ratio (DA/LA) of the volume average particle diameter DA with respect to a crystallite size LA (nm) obtained from a (111) plane in powder X-ray diffractometry of the metallic fine particles of 1.7 or more and 2.5 or less.

公开(公告)号：US20220220330A1

公开(公告)日：2022-07-14

申请号：US17605923

申请日：2019-04-26

Applicant: KAO CORPORATION

Inventor： Tomohide YOSHIDA ,  Kosuke MUTO

IPC: C09D11/52 ,  C09D11/037 ,  C09D11/033 ,  C09D11/107 ,  C09D11/322 ,  C09D11/36 ,  H01B1/22 ,  B41M3/00

Abstract: The present invention relates to a method for producing an electrically conductive member which includes the step of applying an electrically conductive ink containing a metal fine particle dispersion to a substrate to form electrically conductive images on the substrate under ordinary-temperature environments, thereby obtaining the electrically conductive member, in which the metal fine particle dispersion contains metal fine particles (a) dispersed therein with a polymer B; a glass transition temperature of the polymer B is not higher than a temperature at which the electrically conductive images are formed on the substrate; and the substrate has a porous surface.

公开(公告)号：US20230057712A1

公开(公告)日：2023-02-23

申请号：US17788535

申请日：2020-12-24

Applicant: KAO CORPORATION

Inventor： Tomohide YOSHIDA ,  Kosuke MUTO

IPC: C09D11/38 ,  C09D11/52 ,  C09D11/326 ,  B41M5/00

Abstract: A metal fine particle-containing ink that contains metal fine particles dispersed therein with a polymer dispersant, a low-molecular weight carboxylic acid and an aqueous solvent, wherein the polymer dispersant contains a constitutional unit derived from an acid group-containing monomer; a content of the low-molecular weight carboxylic acid C in the ink is not less than 1% by mass and not more than 15% by mass. A boiling point (C) of the low-molecular weight carboxylic acid and a boiling point (D) of the aqueous solvent satisfy the following relational formula (I); and an acid dissociation exponent pKa (C) of the low-molecular weight carboxylic acid and an acid dissociation exponent pKa (B) of an acid group in the polymer dispersant satisfy the following relational formula (II): boiling point (C)>boiling point (D)   (I), and pKa (C)

公开(公告)号：US20220204801A1

公开(公告)日：2022-06-30

申请号：US17605805

申请日：2019-04-26

Applicant: KAO CORPORATION

Inventor： Tomohide YOSHIDA ,  Kosuke MUTO

IPC: C09D11/52 ,  C09D11/037 ,  C09D11/033 ,  C09D11/102 ,  C09D11/322 ,  C09D11/36 ,  B41M5/00

Abstract: The present invention relates to a metal fine particle-containing ink containing metal fine particles (a) dispersed therein with a polymer B, in which the ink contains an ink solvent S; a difference ΔSP (|SP(S)−SP(B)|) between solubility parameters of the solvent S and the polymer B is not more than 1.5 (cal/cm3)0.5 wherein SP(S) and SP(B) are a solubility parameter of the ink solvent S and a solubility parameter of the polymer B, respectively, as measured by a Fedors method; and the SP(B) is not less than 9.5 (cal/cm3)0.5 and not more than 10.5 (cal/cm3)0.5, as well as a method for producing a printed material, which includes the step of applying the metal fine particle-containing ink to a printing substrate to form a metal coating film of the ink on the printing substrate under ordinary-temperature environments, thereby obtaining the printed material.