Title:
INK COMPOSITION FOR PHOTOCURABLE INKJET PRINTING
Document Type and Number:
WIPO Patent Application WO/2021/235215
Kind Code:
A1
Abstract:
A problem of the present invention is to improve the discharge stability during printing, tackiness of a cured coating, base material adherence, folding resistance, rubbing resistance, and solvent resistance of an ink composition for photocurable inkjet printing. As a solution, the present invention provides an ink composition for a photocurable inkjet printing which includes a dye, a photopolymerization component, and a photopolymerization initiator, and satisfies all of conditions (1)-(3) below. (1) Containing 5.0-40.0 wt. % of an ethylene oxide modified bifunctional monomer and at least 60.0 wt. % of a monofunctional monomer relative to the entire photopolymerization component; (2) The Tg of the ethylene oxide modified bifunctional monomer is 20°C or less; (3) The theoretical Tg of a copolymer made out of the monofunctional monomer is 20-40°C
Inventors:
AOKI YOSHIYUKI (JP)
NAKASHIMA OKINORI (JP)
FUKE KAZUHIRO (JP)
NAKASHIMA OKINORI (JP)
FUKE KAZUHIRO (JP)
Application Number:
PCT/JP2021/017148
Publication Date:
November 25, 2021
Filing Date:
April 30, 2021
Export Citation:
Assignee:
SAKATA INX CORP (JP)
International Classes:
C09D11/30
Foreign References:
| JP2017019939A | 2017-01-26 | |||
| JP2007131755A | 2007-05-31 | |||
| JP2013142151A | 2013-07-22 | |||
| JP2014234401A | 2014-12-15 | |||
| JP2017149825A | 2017-08-31 | |||
| JP2009035650A | 2009-02-19 | |||
| JP2008063556A | 2008-03-21 | |||
| JP2007131755A | 2007-05-31 | |||
| JP2013142151A | 2013-07-22 | |||
| JP2017019939A | 2017-01-26 |
Other References:
See also references of EP 4155354A4
Attorney, Agent or Firm:
YAMADA, Yasuyuki et al. (JP)
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