Title:
BIAXIALLY ORIENTED POLYESTER FILM
Document Type and Number:
WIPO Patent Application WO/2024/089745
Kind Code:
A1
Abstract:
This biaxially oriented polyester film contains a first polyester resin that is a polymer of a first polycarboxylic acid component and a first polyol component, and at least one resin selected from the group consisting of second polyester resins having polybutylene terephthalate as the basic skeleton and third polyester resins having polybutylene naphthalate as the basic skeleton. The first polycarboxylic acid component contains 88 mol% or more of a 2,6-naphthalenedicarboxylic acid component and 5 to 9 mol% of a terephthalic acid component relative to the total amount of the first polycarboxylic acid component. The first polyol component contains an ethylene glycol component as the main component. The content ratio of the first polyester resin is 95 mass% or greater. The degree of crystallization of the biaxially oriented polyester film is 32-38%.
Inventors:
MISE YOSHIYUKI (JP)
TOMURA HIDEAKI (JP)
TOMURA HIDEAKI (JP)
Application Number:
PCT/JP2022/039556
Publication Date:
May 02, 2024
Filing Date:
October 24, 2022
Export Citation:
Assignee:
DAIWA CAN CO LTD (JP)
BELL POLYESTER PRODUCTS INC (JP)
BELL POLYESTER PRODUCTS INC (JP)
International Classes:
C08L67/02; C08J5/18
Foreign References:
| JP2018090687A | 2018-06-14 | |||
| JP2016145267A | 2016-08-12 | |||
| JP2013091172A | 2013-05-16 | |||
| JP2005014481A | 2005-01-20 |
Attorney, Agent or Firm:
IWAHASHI Yuji (JP)
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