Title:
ポリイミドフィルム及びその製造方法
Document Type and Number:
Japanese Patent JP6912287
Kind Code:
B2
Abstract:
To provide a polyimide film that has an improved flexure resistance to multiple flexure.SOLUTION: Provided is a polyimide film comprising polyimide as a main component and in which the difference (ΔN) between the refractive index in the MD direction and the refractive index in the TD direction of the polyimide film is 0.02 or more, it does not rupture when bent 100,000 times under the condition of a bending radius of 2 mm, a bending angle of 135° and a load of 1.25 kg/m, and the bending mark cannot visually be confirmed.SELECTED DRAWING: Figure 2
Inventors:
Satoshi Kato
Toshiaki Nagasawa
Toshiaki Nagasawa
Application Number:
JP2017125508A
Publication Date:
August 04, 2021
Filing Date:
June 27, 2017
Export Citation:
Assignee:
ASAHI KASEI KABUSHIKI KAISHA
International Classes:
C08J5/18; B29C41/12; B29C55/06; C08G73/10
Domestic Patent References:
| JP10133017A | ||||
| JP8337665A |
Foreign References:
| WO2016088641A1 | ||||
| WO2016158825A1 |
Attorney, Agent or Firm:
Atsushi Aoki
Takashi Ishida
Tetsuji Koga
Kazuhiro Nakamura
Toko Saito
Shunsuke Mima
Naohisa Akashi
Takashi Ishida
Tetsuji Koga
Kazuhiro Nakamura
Toko Saito
Shunsuke Mima
Naohisa Akashi