Title:
PHOTOCURABLE INK-JET INK COMPOSITION
Document Type and Number:
WIPO Patent Application WO/2024/047976
Kind Code:
A1
Abstract:
The present invention addresses the problem of obtaining a photocurable ink-jet ink composition, the viscosity of which can be lowered, which demonstrates sufficiently high reactivity, and with which substances migrating to a surface brought into contact with the surface of the photocurable ink-jet ink composition after curing can be reduced. As a solution, provided is a photocurable ink-jet ink composition containing A-E below, wherein the ratio A/D is 1/9 to 9/1, the total amount of A and D in the ink composition is 5%-40%, the content of the photopolymerization initiator with a molecular weight of less than 500 is less than 0.2%, the viscosity is 100 cps or less, and the surface tension is 32.0 mN/m or less. A: Ethylenically unsaturated bond-containing polymer photopolymerization initiator B: Thioxanthone-based polymer photosensitizer with a molecular weight of 500 or more C: (Meth)acrylate-based compound D: Amine-modified oligomer with a weight average molecular weight of 500-3,000 and viscosity of less than 4,000 cps E: Surface conditioner
Inventors:
KAWAMOTO KENJI (JP)
NITTA RYOICHI (JP)
NAKASHIMA OKINORI (JP)
NITTA RYOICHI (JP)
NAKASHIMA OKINORI (JP)
Application Number:
PCT/JP2023/019542
Publication Date:
March 07, 2024
Filing Date:
May 25, 2023
Export Citation:
Assignee:
SAKATA INX CORP (JP)
International Classes:
C09D11/30; B41J2/01; B41M5/00; C08F2/44; C08F2/50; C08F20/00; C09D11/38
Domestic Patent References:
| WO2021117880A1 | 2021-06-17 |
Foreign References:
| JP6960555B1 | 2021-11-05 | |||
| JP2021095439A | 2021-06-24 | |||
| JP2019512564A | 2019-05-16 |
Attorney, Agent or Firm:
YAMADA, Yasuyuki et al. (JP)
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