Title:
AQUEOUS INKJET INK, AQUEOUS INKJET INK SET, AQUEOUS INKJET INK PRINTED MATTER PRODUCTION METHOD, AND PRINTED MATTER
Document Type and Number:
WIPO Patent Application WO/2020/218287
Kind Code:
A1
Abstract:
The aqueous inkjet ink contains a pigment, a binder resin, a water-soluble organic solvent, a surfactant, and water. The binder resin contains a resin that has been rendered aqueous and contains, as a constitutive unit, a structure derived from an ethylenically unsaturated monomer containing an acidic group and a structure derived from an ethylenically unsaturated monomer containing a hydroxyl group. The resin has a weight average molecular weight of 5,000 to 45,000 and a glass transition temperature of 35 to 110°C. The water-soluble organic solvent includes a first water-soluble organic solvent having an SP value of 8.5 to 13 (cal/cm3)1/2 and does not include a second water-soluble organic solvent having a boiling point of 235°C or higher at one atmosphere. The surfactant includes an acetylene-based surfactant.
Inventors:
SUNAOSHI KAZUSHI (JP)
SUGIHARA MASAHIRO (JP)
SASAKI YUKI (JP)
SUGIHARA MASAHIRO (JP)
SASAKI YUKI (JP)
Application Number:
PCT/JP2020/017174
Publication Date:
October 29, 2020
Filing Date:
April 21, 2020
Export Citation:
Assignee:
TOYO INK SC HOLDINGS CO LTD (JP)
TOYO INK CO LTD (JP)
TOYO INK CO LTD (JP)
International Classes:
B41J2/01; B41M5/00; C09D11/322
Domestic Patent References:
| WO2018221045A1 | 2018-12-06 | |||
| WO2015129744A1 | 2015-09-03 |
Foreign References:
| JP2004051963A | 2004-02-19 | |||
| JP2000191974A | 2000-07-11 | |||
| JPH07224240A | 1995-08-22 | |||
| JP2018083930A | 2018-05-31 | |||
| JP2014507305A | 2014-03-27 | |||
| JP2013159619A | 2013-08-19 | |||
| JP2013001755A | 2013-01-07 | |||
| JP2018203802A | 2018-12-27 |
Other References:
J.A. BRYDSON: "Plastics Materials 6th Edition", 1995, BUTTERWORTH-HEINEMANN, pages: 85 - 86
See also references of EP 3960464A4
See also references of EP 3960464A4
Attorney, Agent or Firm:
MIYOSHI Hidekazu et al. (JP)
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