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1. 发明公开

EP4053230A1 INK COMPOSITION FOR NON-AQUEOUS INKJET 审中-实审
公开(公告)号：EP4053230A1
公开(公告)日：2022-09-07
申请号：EP20880997.0
申请日：2020-10-28
申请人： Sakata INX Corporation
发明人： NAKASHIMA, Okinori , AOKI, Yoshiyuki , MIYAKE, Ryohei , OGASAHARA, Koki
IPC分类号： C09D11/322 , C09D11/36
摘要： An object is to provide a nonaqueous inkjet ink composition offering excellent wettability, fixing property, cissing inhibition property of ink, solid filling property, and anti-mottling property, as well as excellent discharge stability and ease of maintenance, along with high flash point, even when printed at high speed on printing targets whose printing face is constituted by a polyvinyl chloride, ethylene-vinyl acetate copolymer, or other vinyl-based polymer, etc. As a solution, a nonaqueous inkjet ink composition is provided that contains acrylic-based resin, pigment, pigment dispersant, and organic solvent, wherein the nonaqueous inkjet ink composition is characterized in that it contains propylene carbonate, diethylene glycol dialkyl ether, as well as tetraethylene glycol dialkyl ether, as the organic solvent, and is compounded in a manner that the propylene carbonate accounts for 1.0 to 20.0% by mass in the ink composition and the content of the diethylene glycol dialkyl ether relative to the propylene carbonate content, or "diethylene glycol dialkyl ether/propylene carbonate," falls between 9.0 and 20.0.

2. 发明公开

EP4173825A1 INK COMPOSITION FOR PHOTOCURABLE INKJET PRINTING 审中-实审
公开(公告)号：EP4173825A1
公开(公告)日：2023-05-03
申请号：EP21828095.6
申请日：2021-06-04
申请人： Sakata INX Corporation
发明人： NAKASHIMA, Okinori , NITTA, Ryoichi , OGASAHARA, Koki
IPC分类号： B41J2/01 , C09D11/101 , C09D11/30 , C09D11/38 , B41M5/00
摘要： An object is to provide a photocurable inkjet printing ink composition that, subject to having a viscosity suitable for discharge, offers excellent curability, tackiness (no tackiness) after curing, adhesion to various types of resin base materials, bending resistance, abrasion resistance, water resistance, ethanol resistance, and banding resistance. As a solution, a photocurable inkjet printing ink composition is provided that satisfies all of requirements A to F below:
A: the total content of one or more types of compounds selected from vinyl methyl oxazolidinone, N,N-dimethylacrylamide, benzyl acrylate, and N-vinylcaprolactam, is 30.0% by mass or higher in the photocurable inkjet printing ink composition;
B: the total content of one or more types of compounds selected from saturated hydrocarbon group-containing monofunctional monomers with 6 or more carbon atoms and saturated hydrocarbon group-containing polyfunctional monomers with 6 or more carbon atoms is 15.0% by mass or higher in the photocurable inkjet printing ink composition;
C: the content of bis(2,4,6-trimethylbenzoyl)phenylphosphine oxide is 3.5% by mass or higher in the photocurable inkjet printing ink composition;
D: the total content of ethoxy(2,4,6-trimethylbenzoyl)phenylphosphine oxide and bis(2,4,6-trimethylbenzoyl)phenylphosphine oxide is 6.0 to 12.0% by mass in the photocurable inkjet printing ink composition, and their ratio by mass, or ethoxy(2,4,6-trimethylbenzoyl)phenylphosphine oxide / bis(2,4,6-trimethylbenzoyl)phenylphosphine oxide, is 0.3 to 1.5;
E: the content of amine-modified oligomer is 0.5 to 15.0% by mass in the photocurable inkjet printing ink composition; and
F: a colorant.

3. 发明公开

EP4129690A1 PHOTOCURABLE INK COMPOSITION FOR INK-JET PRINTING 审中-实审
公开(公告)号：EP4129690A1
公开(公告)日：2023-02-08
申请号：EP21781828.5
申请日：2021-02-18
申请人： Sakata INX Corporation
发明人： NAKASHIMA, Okinori , OGASAHARA, Koki , KAWAMOTO, Kenji
IPC分类号： B41J2/01 , C09D11/101 , C09D11/36 , B41M5/00
摘要： An object is to provide a photocurable inkjet printing ink composition offering curability and adhesion on printing targets including sheets whose printing face is constituted by paper, polyester, polyvinyl chloride, ethylene-vinyl acetate-based copolymer, or other vinyl-based polymers, etc., and additionally having storage stability. The cured coating film has low odor, low tackiness, abrasion resistance, high water resistance, high ethanol resistance, stretchability, and excellent bending resistance. Means for solving the problem includes providing a photocurable inkjet printing ink composition containing vinyl methyl oxazolidinone by 5 to 50% by mass relative to the entire ink composition, a monofunctional photopolymerizable monomer having a glass-transition temperature of 10°C or less by 10 to 50% by mass relative to the entire ink composition, a colorant, and a photopolymerization initiator.

4. 发明公开

EP4316848A1 ACTIVE ENERGY RAY-CURABLE INK COMPOSITION FOR INKJET 审中-实审
公开(公告)号：EP4316848A1
公开(公告)日：2024-02-07
申请号：EP21933257.4
申请日：2021-12-14
申请人： Sakata INX Corporation
发明人： NAKASHIMA, Okinori , MYOSE, Takuya , KAWABATA, Jun , OGASAHARA, Koki
IPC分类号： B41J2/01 , C09D11/101 , C09D11/322 , B41M5/00
摘要： An object of the present invention is to obtain an active energy ray-curable inkjet ink composition designed to improve color development property and to be LED curable, and designed so that a cured coating film has high hardness and excellent rub resistance and water resistance. As a solution, the ink composition contains a pigment, a pigment dispersant, and a photopolymerizable compound, wherein the pigment contains Pigment Violet 19 and Pigment Orange 71, and Pigment Violet 19 is 30.0 to 85.0% by mass relative to a total mass of Pigment Violet 19 and Pigment Orange 71, and the photopolymerizable compound satisfies all of the following requirements (A) to (F): (A) a multifunctional amine-modified oligomer is contained by 0.20 to 15.0% by mass in a total amount of all polymerizable components; (B) a monofunctional monomer is contained by 50.0% by mass or more in the total amount of all polymerizable components; (C) a monofunctional monomer whose glass transition temperature is 20°C or more is contained by 35.0% by mass or more in the total amount of all polymerizable components; (D) a monofunctional monomer whose glass transition temperature is 10°C or less is contained by 35.0% by mass or more in the total amount of all polymerizable components; (E) a multifunctional monomer whose glass transition temperature is 10°C or less is contained by 2.0 to 11.0% by mass in the total amount of all polymerizable components; and (F) a nitrogen-containing monofunctional monomer is contained by 10.0 to 25.0% by mass in the total amount of all polymerizable components.

5. 发明公开

EP4234251A1 INK COMPOSITION FOR PHOTOCURABLE INKJET PRINTING 审中-实审
公开(公告)号：EP4234251A1
公开(公告)日：2023-08-30
申请号：EP21882389.6
申请日：2021-07-06
申请人： Sakata INX Corporation
发明人： AOKI, Yoshiyuki , NITTA, Ryoichi , OGASAHARA, Koki , NAKASHIMA, Okinori
IPC分类号： B41J2/01 , C09D11/101 , C09D11/30 , B41M5/00
摘要： Provided is an ink composition for photo-curable inkjet printing, comprising a pigment, a photopolymerizable compound, and a photopolymerization initiator, wherein the photopolymerizable compound comprises 5 to 30% by mass of an amine-modified oligomer and 5 to 30% by mass of N,N-dimethylacrylamide, wherein the photopolymerization initiator comprises at least any one of ethoxy(2,4,6-trimethylbenzoyl)phenylphosphine oxide and bis(2,4,6-trimethylbenzoyl)phenylphosphine oxide, and wherein a total amount of ethoxy(2,4,6-trimethylbenzoyl)phenylphosphine oxide and bis(2,4,6-trimethylbenzoyl)phenylphosphine oxide is 12% by mass or less.

6. 发明公开

EP4194519A1 INK COMPOSITION FOR PHOTOCURABLE INKJET PRINTING 审中-实审
公开(公告)号：EP4194519A1
公开(公告)日：2023-06-14
申请号：EP21852988.1
申请日：2021-07-21
申请人： Sakata INX Corporation
发明人： NAKASHIMA, Okinori , NITTA, Ryoichi , OGASAHARA, Koki
IPC分类号： C09D11/30
摘要： A: the total content of one or more types of compounds selected from vinyl methyl oxazolidinone, N,N-dimethylacrylamide, benzyl acrylate, and N-vinylcaprolactam is 30.0% by mass or higher in the photocurable inkjet printing ink composition;
B: the total content of one or more types of compounds selected from saturated hydrocarbon group-containing monofunctional monomers with 6 or more carbon atoms and saturated hydrocarbon group-containing polyfunctional monomers with 6 or more carbon atoms is 15.0% by mass or higher in the photocurable inkjet printing ink composition;
C: the content of bis(2,4,6-trimethylbenzoyl)phenylphosphine oxide is 2.5% by mass or lower in the photocurable inkjet printing ink composition;
D: the content of ethoxy(2,4,6-trimethylbenzoyl)phenylphosphine oxide is 6.5 to 13.0% by mass in the photocurable inkjet printing ink composition;
E: the content of amine-modified oligomer is 0.5 to 15.0% by mass in the photocurable inkjet printing ink composition;
F: as a colorant, a white pigment is contained by no more than 17.0% by mass, or not contained at all, in the photocurable inkjet printing ink composition.

7. 发明公开

EP4101902A1 CONTINUOUS INKJET INK COMPOSITION 审中-实审
公开(公告)号：EP4101902A1
公开(公告)日：2022-12-14
申请号：EP21750148.5
申请日：2021-01-26
申请人： Sakata INX Corporation
发明人： NAKASHIMA, Okinori , KINJOH, Jun , OGASAHARA, Koki
IPC分类号： C09D11/322 , C09D11/38
摘要： An object is to provide a continuous inkjet ink composition that has excellent storage stability and anticorrosion effect on a metal member, and that allows printing with good image quality. As a solution, a continuous inkjet ink composition is provided that includes a pigment, a resin, a metal salt of thiocyanic acid at 0.05 to 1.7% by mass in the composition, and tetraalkylammonium hexafluorophosphate at 0.05 to 2.7% by mass in the composition.

8. 发明公开

EP4053231A1 INK COMPOSITION FOR NON-AQUEOUS INKJET 审中-实审
公开(公告)号：EP4053231A1
公开(公告)日：2022-09-07
申请号：EP20881102.6
申请日：2020-10-28
申请人： Sakata INX Corporation
发明人： NAKASHIMA, Okinori , AOKI, Yoshiyuki , MIYAKE, Ryohei , OGASAHARA, Koki
IPC分类号： C09D11/322 , C09D11/324 , C09D11/36
摘要： An object is to provide a nonaqueous inkjet ink composition offering excellent solid filling property and anti-mottling property, as well as excellent ink stability, discharge stability, and scratch resistance, even when printed at high speed on printing targets whose printing face is constituted by a polyvinyl chloride, ethylene-vinyl acetate-based copolymer, or other vinyl-based polymer, etc. As a solution, a nonaqueous inkjet ink composition is provided that contains acrylic-based resin, organic coloring pigment and/or carbon black, alumina, pigment dispersant, and organic solvent, wherein the organic solvent comprises propylene carbonate, diethylene glycol dialkyl ether, and dipropylene glycol alkyl ether acetate, and alumina is contained by 5 to 30 parts by mass relative to 100 parts by mass representing the total of organic coloring pigment and carbon black.

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