公开(公告)号：US12021015B2

公开(公告)日：2024-06-25

申请号：US16275957

申请日：2019-02-14

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Hiroki Tamiya ,  Koji Kishino ,  Ryuji Takahashi ,  Yasunori Hoshino ,  Takahiro Yamada ,  Shimpei Obata ,  Hiroyuki Shiraki ,  Shinya Arakawa ,  Shigetoshi Fujita

IPC: H01L23/498 ,  C08K9/04 ,  H01L23/14

CPC classification number: H01L23/49827 ,  C08K9/04 ,  H01L23/145 ,  C08L2203/20 ,  C08L2207/53 ,  H01L2224/16225 ,  C08K9/04 ,  C08L63/00

Abstract: A thermosetting resin composition according to the invention contains: a thermosetting resin component; and silica having an average particle diameter equal to or greater than 0.2 μm and treated with isocyanate. It is preferable that the content of the silica is in a range of 50% by mass to 300% by mass with respect to the thermosetting resin component. It is also preferable that the thermosetting resin composition contains core shell rubber having content in a range of 20% by mass to 80% by mass with respect to the thermosetting resin component.

公开(公告)号：US11414528B2

公开(公告)日：2022-08-16

申请号：US16757677

申请日：2018-10-12

Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.

Inventor： Ryuji Takahashi ,  Shimpei Obata ,  Yasunori Ambe ,  Tomo Muguruma

IPC: C08J5/24 ,  C08L61/06 ,  C08G8/08 ,  H05K1/03 ,  B32B15/08 ,  B32B15/20 ,  B32B5/02

Abstract: A thermosetting resin composition contains a thermosetting resin and an inorganic filler. The thermosetting resin includes a curing agent. A 3 mass % methyl ethyl ketone solution of the curing agent has a Gardner color scale of 15 or more. The content of the curing agent accounts for 10 mass % or more of a total solid content of the thermosetting resin composition.

公开(公告)号：US10472478B2

公开(公告)日：2019-11-12

申请号：US15755768

申请日：2016-09-05

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Yasunori Hoshino ,  Shimpei Obata ,  Shigetoshi Fujita ,  Ryuji Takahashi

IPC: C08L63/00 ,  C08L51/04 ,  C08L33/08 ,  C08J5/24 ,  C08K3/00 ,  C08L101/00 ,  H05K1/03 ,  C08K3/36

Abstract: A prepreg includes: a woven fabric base; and a semi-cured product of a resin composition, which fills an inside of the woven fabric base and coats a surface of the woven fabric base. The resin composition includes a thermosetting resin, an inorganic filler, a first thermoplastic resin soluble in an organic solvent, and a second thermoplastic resin insoluble in an organic solvent. With respect to 100 parts by mass of the thermosetting resin, a content ratio of the inorganic filler ranges from 50 parts by mass to 150 parts by mass, inclusive, and a total content ratio of the first thermoplastic resin and the second thermoplastic resin ranges from 20 parts by mass to 50 parts by mass, inclusive.