Title:
READILY ADHESIVE POLYESTER FILM
Document Type and Number:
WIPO Patent Application WO/2022/113577
Kind Code:
A1
Abstract:
[Problem] To provide a readily adhesive polyester film that is suitable for use in optical applications, etc., by suppressing a decrease in adhesion over time. [Solution] A readily adhesive polyester film having, on at least one surface of a polyester film, a coating layer obtained by curing a composition including a polyester having a polycyclic aromatic skeleton and a crosslinking agent having at least one skeleton selected from an aliphatic skeleton, an alicyclic skeleton, and a heterocyclic skeleton, wherein, when the surface of the coating layer on the side thereof not in contact with the polyester film is measured by a Fourier-transform infrared spectroscopy (FT-IR) method, a prescribed relative absorption intensity ratio (I1640/I1410) of the absorption intensity (I1640) having a peak at 1640 cm-1 pertaining to urea groups and the absorption intensity (I1410) having a peak at 1410 cm-1 pertaining to polyester CH expansion and contraction satisfies a specific relationship.
Inventors:
EJIMA AKINORI (JP)
YAMAGUCHI YOHEI (JP)
YAMAGUCHI YOHEI (JP)
Application Number:
PCT/JP2021/038751
Publication Date:
June 02, 2022
Filing Date:
October 20, 2021
Export Citation:
Assignee:
TOYO BOSEKI (JP)
International Classes:
B32B27/26; B32B27/36; C08J7/043; C09D5/00; C09D167/03
Domestic Patent References:
| WO2012121042A1 | 2012-09-13 | |||
| WO2014024570A1 | 2014-02-13 |
Foreign References:
| JP2011208147A | 2011-10-20 | |||
| JP2011240533A | 2011-12-01 | |||
| JP2013195997A | 2013-09-30 |
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