Title:
PHOTOCURABLE INKJET INK
Document Type and Number:
WIPO Patent Application WO/2018/199131
Kind Code:
A1
Abstract:
The present invention addresses the problem of providing a photocurable inkjet ink which is useful for manufacturing microlenses and electronic components, and has low volatility. This photocurable inkjet ink contains: a polyfunctional (meth)acrylate (A); a monofunctional (meth)acrylate (B) having a nonvolatility of at least 75% and a viscosity of 1-70 mPa·s (at 25°C) as evaluated using Evaluation Method 1; and a photopolymerization initiator (C), and has a viscosity of 1-100 mPa·s at 25°C. [Evaluation Method 1] A monofunctional (meth)acrylate (B) and a pentaerythritol tetra(tri)acrylate are mixed at a weight ratio of 25:45 to prepare an evaluation solution. (1) The weight of a 5 cm × 5 cm glass substrate is measured. (2) The evaluation solution is dropped onto the glass substrate of step (1) and applied by spin coating to have a coating weight error of 25 mg ± 2 mg. (3) The weight of the glass substrate coated with the evaluation solution in step (2) is measured. (4) The weight measured in step (1) is subtracted from the weight measured in step (3) to calculate the coating weight of the evaluation solution. (5) The glass substrate coated with the evaluation solution in step (3) is heated for 15 minutes on a hot plate at 50°C. (6) The weight of the glass substrate after being heated in step (5) is measured, and the remaining amount of the evaluation solution is calculated by subtracting the weight measured in step (1). (7) The nonvolatility is calculated from the following equation. Nonvolatility % = 100 × remaining amount/application weight.
Inventors:
YOSHITOMI KOHSUKE (JP)
MOROKOSHI SHINTA (JP)
TAKAHASHI TOSHIYUKI (JP)
OIKAWA HISAO (JP)
MOROKOSHI SHINTA (JP)
TAKAHASHI TOSHIYUKI (JP)
OIKAWA HISAO (JP)
Application Number:
PCT/JP2018/016725
Publication Date:
November 01, 2018
Filing Date:
April 25, 2018
Export Citation:
Assignee:
JNC CORP (JP)
International Classes:
C09D11/30; B41J2/01; B41M5/00; C09D11/101; G02B3/00
Foreign References:
| JP2014065862A | 2014-04-17 | |||
| JP2017039917A | 2017-02-23 | |||
| JP2012255123A | 2012-12-27 | |||
| JP2013014740A | 2013-01-24 |
Attorney, Agent or Firm:
SSINPAT PATENT FIRM (JP)
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