US 12,119,142 B2
Film, method for producing film, metal-clad laminate, and coated metal conductor
Wataru Kasai, Tokyo (JP); Tomoya Hosoda, Tokyo (JP); Atsumi Mitsunaga, Tokyo (JP); Tatsuya Terada, Tokyo (JP); and Sota Yuki, Tokyo (JP)
Assigned to AGC INC., Tokyo (JP)
Filed by AGC INC., Tokyo (JP)
Filed on Feb. 3, 2022, as Appl. No. 17/591,755.
Application 17/591,755 is a continuation of application No. PCT/JP2020/031873, filed on Aug. 24, 2020.
Claims priority of application No. 2019-154856 (JP), filed on Aug. 27, 2019; application No. 2019-175255 (JP), filed on Sep. 26, 2019; and application No. 2020-025351 (JP), filed on Feb. 18, 2020.
Prior Publication US 2022/0157487 A1, May 19, 2022
Int. Cl. H01B 3/30 (2006.01); B32B 7/025 (2019.01); B32B 15/08 (2006.01); B32B 15/20 (2006.01); B32B 37/24 (2006.01); H01B 1/02 (2006.01); H01B 3/44 (2006.01)
CPC H01B 3/306 (2013.01) [B32B 7/025 (2019.01); B32B 15/08 (2013.01); B32B 15/20 (2013.01); B32B 37/24 (2013.01); H01B 1/026 (2013.01); H01B 3/445 (2013.01); B32B 2037/243 (2013.01); B32B 2250/03 (2013.01); B32B 2250/40 (2013.01); B32B 2255/10 (2013.01); B32B 2255/26 (2013.01); B32B 2270/00 (2013.01); B32B 2307/202 (2013.01); B32B 2307/206 (2013.01); B32B 2307/7265 (2013.01); B32B 2457/04 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A film comprising an aromatic polyimide base film, and a layer containing (i) a polymer having units based on tetrafluoroethylene and units based on a perfluoro(alkyl vinyl ether) and (ii) an aromatic polymer, formed on each side of the base film,
wherein in the layer, an amount of the aromatic polymer (ii) to a total amount of the polymer (i) and the aromatic polymer (ii) is 10 mass % or less.