Title:
SURFACE PROTECTIVE FILM
Document Type and Number:
WIPO Patent Application WO/2022/138179
Kind Code:
A1
Abstract:
Provided is a surface protective film capable of exhibiting light peelability, and suppressing the occurrence of black spots. Also provided are an optical member and an electronic member to which such a surface protective film is attached. A surface protective film according to an embodiment of the present invention includes an adhesive layer, wherein the adhesive layer is composed of a urethane-based adhesive formed from a urethane-based adhesive composition, and the urethane-based adhesive composition contains a base polymer and a fluorine-based compound. The base polymer includes a urethane prepolymer, and the percentage of a hydroxyl group contained in the urethane-based adhesive composition is less than 30 mmol with respect to 100 g of the base polymer.
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Inventors:
FUNAKI CHIHIRO (JP)
SASAKI SHOGO (JP)
SASAKI SHOGO (JP)
Application Number:
PCT/JP2021/045245
Publication Date:
June 30, 2022
Filing Date:
December 09, 2021
Export Citation:
Assignee:
NITTO DENKO CORP (JP)
International Classes:
B32B27/00; B32B27/40; C08G18/40; C08K5/02; C08L75/04; C08L81/04; C09J7/38; C09J11/06; C09J175/04; C09J175/08
Foreign References:
| JP2019218472A | 2019-12-26 | |||
| JP2018053146A | 2018-04-05 | |||
| JP2017160422A | 2017-09-14 | |||
| JP2019189763A | 2019-10-31 | |||
| JP2019026707A | 2019-02-21 | |||
| JP2018062628A | 2018-04-19 |
Attorney, Agent or Firm:
MOMII Takafumi (JP)
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