US 12,454,088 B2
LCP extruded film and method for manufacturing the same, LCP extruded film for stretch treatment, LCP stretched film, heat-shrinkable LCP stretched film, insulating material for circuit substrate, and metal foil-clad laminate
Yusuke Masuda, Tokyo (JP); and Naoki Ogawa, Tokyo (JP)
Assigned to Denka Company Limited, Tokyo (JP)
Filed by Denka Company Limited, Tokyo (JP)
Filed on Oct. 2, 2023, as Appl. No. 18/375,800.
Application 18/375,800 is a division of application No. 18/266,228, previously published as PCT/JP2021/044969, filed on Dec. 7, 2021.
Claims priority of application No. 2020-204271 (JP), filed on Dec. 9, 2020; application No. 2020-204305 (JP), filed on Dec. 9, 2020; application No. 2020-204317 (JP), filed on Dec. 9, 2020; application No. 2020-204359 (JP), filed on Dec. 9, 2020; application No. 2021-182534 (JP), filed on Nov. 9, 2021; application No. 2021-182543 (JP), filed on Nov. 9, 2021; and application No. 2021-182583 (JP), filed on Nov. 9, 2021.
Prior Publication US 2024/0032191 A1, Jan. 25, 2024
Int. Cl. B29C 48/23 (2019.01); B29C 48/00 (2019.01); B29C 48/08 (2019.01); B29C 48/14 (2019.01); B29C 48/78 (2019.01); B32B 5/02 (2006.01); B32B 15/08 (2006.01); B32B 15/14 (2006.01); B32B 27/12 (2006.01); C08J 5/18 (2006.01); C09K 19/38 (2006.01); H05K 1/03 (2006.01); B29C 48/21 (2019.01); B29C 48/305 (2019.01); B29K 105/00 (2006.01); B29K 105/16 (2006.01); B29K 509/00 (2006.01); B29L 31/34 (2006.01)
CPC B29C 48/23 (2019.02) [B29C 48/022 (2019.02); B29C 48/08 (2019.02); B29C 48/146 (2019.02); B29C 48/78 (2019.02); B32B 5/024 (2013.01); B32B 15/08 (2013.01); B32B 15/14 (2013.01); B32B 27/12 (2013.01); C08J 5/18 (2013.01); C09K 19/3809 (2013.01); H05K 1/0366 (2013.01); B29C 48/0021 (2019.02); B29C 48/21 (2019.02); B29C 48/305 (2019.02); B29K 2105/0079 (2013.01); B29K 2105/16 (2013.01); B29K 2509/00 (2013.01); B29K 2995/0012 (2013.01); B29K 2995/005 (2013.01); B29K 2995/007 (2013.01); B29K 2995/0097 (2013.01); B29L 2031/3425 (2013.01); B32B 2250/03 (2013.01); B32B 2305/55 (2013.01); B32B 2307/30 (2013.01); B32B 2307/536 (2013.01); B32B 2307/7376 (2023.05); B32B 2457/08 (2013.01); C08J 2367/04 (2013.01); C09K 2219/03 (2013.01); H05K 2201/0125 (2013.01); H05K 2201/0129 (2013.01); H05K 2201/0141 (2013.01); H05K 2201/029 (2013.01)] 12 Claims
OG exemplary drawing
 
1. An LCP extruded film for stretch treatment, comprising a thermoplastic liquid crystal polymer, wherein a yield point strength X (MPa) and a fracture point strength Y (MPa) in a TD direction of the LCP extruded film for stretch treatment, in a stress-strain curve measured by a thermostatic tensile test (according to JIS K7161-1:2014, 200° C., tensile speed 200 mm/min), satisfy the following expression (I):
0.75≤fracture point strength Y/yield point strength X≤1.50  (I).