Title:
METHOD FOR PRODUCING ADHESIVE SHEET, METHOD FOR PRODUCING OPTICAL MULTILAYER BODY, AND METHOD FOR PRODUCING IMAGE DISPLAY DEVICE
Document Type and Number:
WIPO Patent Application WO/2022/244888
Kind Code:
A1
Abstract:
The present invention provides a production method that comprises the formation of an adhesive sheet from a coating film of an adhesive composition, which contains, as a main component, a (meth)acrylic polymer (A) and additionally contains an isocyanate crosslinking agent (B), by heating the coating film. The distance Ra of Hansen solubility parameter (HSP) between an assumed self-polymer (C) of the crosslinking agent (B) and the (meth)acrylic polymer (A) is 15 or less. The conditions for the above-mentioned heating satisfy the formula (1) or (2) described below. In the formulae, x and y respectively represent the temperature (°C) and the time (second) of the heating. (1): x ≤ 120
(2): x > 120 and y ≤ -2.17x + 365.83
This production method is suitable for producing an adhesive sheet that is capable of suppressing a dimensional change of an optical film that is contained in an optical multilayer body, while ensuring durability and transparency.
Inventors:
NAGATA MIZUE (JP)
YAMAMOTO SATOSHI (JP)
TOYAMA YUSUKE (JP)
YAMAMOTO SATOSHI (JP)
TOYAMA YUSUKE (JP)
Application Number:
PCT/JP2022/021034
Publication Date:
November 24, 2022
Filing Date:
May 20, 2022
Export Citation:
Assignee:
NITTO DENKO CORP (JP)
International Classes:
C09J11/06; C09J7/38; C09J133/00; C09J175/04; G02B5/30
Foreign References:
| JP2016172808A | 2016-09-29 | |||
| JPH10140120A | 1998-05-26 | |||
| JP2015063691A | 2015-04-09 | |||
| JP2020158653A | 2020-10-01 | |||
| JP2016188309A | 2016-11-04 | |||
| JP2000105381A | 2000-04-11 |
Attorney, Agent or Firm:
KAMADA Koichi (JP)
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