SURFACE PROTECTION FILM - NITTO DENKO CORP

Title:

SURFACE PROTECTION FILM

Document Type and Number:

WIPO Patent Application WO/2022/138114

Kind Code:

A1

Abstract:

Provided is a surface protection film including a urethane-based pressure-sensitive adhesive layer having an excellent surface modulus.　A surface protection film according to an embodiment of the present invention includes a urethane-based pressure-sensitive adhesive layer formed from a urethane-based pressure-sensitive adhesive composition. The urethane-based pressure-sensitive adhesive composition representatively comprises a urethane prepolymer, a polyol, and a polyfunctional isocyanate compound, the urethane prepolymer and/or the polyol having a constituent unit represented by general formula (1). The urethane-based pressure-sensitive adhesive layer has a surface modulus of 0.8 MPa or greater. [Chem. formula 1]

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Inventors:

SASAKI SHOGO (JP)
YAMAMOTO YUSUKE (JP)

Application Number:

PCT/JP2021/044741

Publication Date:

June 30, 2022

Filing Date:

December 06, 2021

Export Citation:

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Assignee:

NITTO DENKO CORP (JP)

International Classes:

C09J11/06; C09J7/38; C09J175/08

Foreign References:

JP2018204000A	2018-12-27
JP2016108363A	2016-06-20
JP2018053146A	2018-04-05
JP2016017109A	2016-02-01