Title:
COPOLYMERIZED POLYESTER FILM, MULTILAYER FILM AND USE OF THESE FILMS
Document Type and Number:
WIPO Patent Application WO/2021/152923
Kind Code:
A1
Abstract:
A copolymerized polyester film which comprises a copolymerized polyester layer (A1) containing a copolymerized polyester (a1), wherein: the copolymerized polyester (a1) is a copolymer which contains terephthalic acid (X1), a dicarboxylic acid component (X2) having from 4 to 10 carbon atoms, and an alcohol component (Y2) other than ethylene glycol (Y1); and the difference (∆Tcg) between the cold crystallization temperature (Tcc) and the glass transition temperature (Tg) is more than 60°C.
Inventors:
SUZUKI TOMOHIRO (JP)
Application Number:
PCT/JP2020/038544
Publication Date:
August 05, 2021
Filing Date:
October 12, 2020
Export Citation:
Assignee:
MITSUBISHI CHEM CORP (JP)
International Classes:
B29C55/12; B32B7/022; B32B27/00; B32B27/18; B32B27/30; B32B27/36; C08G63/183; C08J5/18; B29K67/00; B29L7/00; B29L9/00
Domestic Patent References:
| WO2020054576A1 | 2020-03-19 |
Foreign References:
| JP2019203121A | 2019-11-28 | |||
| JP2013129820A | 2013-07-04 |
Attorney, Agent or Firm:
TAGUCHI, Masahiro et al. (JP)
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