公开(公告)号：US11814502B2

公开(公告)日：2023-11-14

申请号：US17771079

申请日：2020-10-21

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Akihiro Yamauchi ,  Eiichiro Saito ,  Nobuo Shibata ,  Kouichi Aoki

IPC: C08K3/26 ,  C08J5/24 ,  C08K3/22 ,  C08K9/06 ,  C08L63/00

CPC classification number: C08K3/26 ,  C08J5/249 ,  C08K3/22 ,  C08K9/06 ,  C08L63/00 ,  C08J2363/00 ,  C08K2003/2227 ,  C08K2003/267 ,  C08K2201/003 ,  C08K2201/005 ,  C08K2201/006

Abstract: A resin composition contains a thermosetting resin (A) and an inorganic filler (B). The inorganic filler (B) includes: a first filler (B1); and a second filler (B2) of a nanometer scale having a smaller particle size than the first filler (B1). The first filler (B1) includes an anhydrous magnesium carbonate filler (b1) and an alumina filler (b2). The proportion of the first filler (B1) relative to a total solid content in the resin composition is equal to or greater than 50% by volume and equal to or less than 90% by volume. The proportion of the second filler (B2) relative to the total solid content in the resin composition is equal to or greater than 0.1% by volume and equal to or less than 2.0% by volume.

公开(公告)号：US10543661B2

公开(公告)日：2020-01-28

申请号：US15753571

申请日：2016-09-02

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Akihiro Yamauchi ,  Yoshiaki Esaki ,  Takayoshi Ozeki ,  Hiroaki Umehara ,  Hiroharu Inoue ,  Yoshihiko Nakamura

IPC: B32B15/08 ,  B32B15/092 ,  C08G59/62 ,  H05K1/03 ,  C08G65/44 ,  C08K3/36 ,  C08L63/00

Abstract: A metal foil with resin is a metal foil with resin including a metal foil and a resin layer disposed on the metal foil, resin layer being obtained by half-curing a resin composition. The resin composition contains a first component that is a polymer, a second component that is a polyarylene ether copolymer, and a third component that is an epoxy resin. The first component has structures represented by formulae (1) and (2) below, with no unsaturated bond between carbon atoms. The third component has two or more epoxy groups per molecule. The second component is compatible with the first component, and the third component is incompatible with the first component.In the formulae (1) and (2), a ratio between x and y is x:y=0:1 to 0.35:0.65, R1 represents hydrogen atom or methyl group, and R2 represents hydrogen atom or an alkyl group.

公开(公告)号：US11617261B2

公开(公告)日：2023-03-28

申请号：US17050624

申请日：2019-04-22

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Akihiro Yamauchi ,  Eiichiro Saito ,  Kouichi Aoki

IPC: B32B15/08 ,  C08J5/24 ,  B32B15/20 ,  C08K3/26 ,  C08K3/22 ,  H05K1/03 ,  C08L63/00 ,  H01L23/373 ,  H05K7/20

Abstract: A resin composition includes: a resin as Component (A); and an inorganic filler as Component (B). The Component (B) includes anhydrous magnesium carbonate as Component (b1) and aluminum oxide as Component (b2). Content of the Component (b1) falls within a range from 35% by volume to 65% by volume relative to 100% by volume of the Components (b1) and (b2) combined. Content of the Component (B) falls within a range from 60% by volume to 75% by volume relative to 100% by volume of the resin composition.