Title:
POROUS POLYIMIDE FILM
Document Type and Number:
Japanese Patent JP2022165379
Kind Code:
A
Abstract:
To provide a porous polyimide film capable of suppressing an increase in dielectric tangent even when immersed in water.SOLUTION: In a porous polyimide film, a difference between a dielectric tangent T1 after standing for 24 hours in an atmosphere of 25°C. and a relative humidity of 50%, and a dielectric tangent T2 after immersing in water in an atmosphere of 25°C. for 24 hours is 0.0030 or less.SELECTED DRAWING: None
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Inventors:
MISHIMA KEI
Application Number:
JP2022014324A
Publication Date:
October 31, 2022
Filing Date:
February 01, 2022
Export Citation:
Assignee:
NITTO DENKO CORP
International Classes:
C08J9/26
Attorney, Agent or Firm:
Hiroyuki Okamoto
Shinichi Uda
Shinichi Uda