Panasonic Corporation

Panasonic Intellectual Property Management Co., Ltd.

Hiroki Tamiya

Koji Kishino

Takahiro Yamada

Tomoaki Sawada

Yoshihiko Nakamura

Yasunori Hoshino

Hiroyuki Shiraki

Shimpei Obata

Shunji Araki

Yohsuke Ishikawa

Hiroyuki Fujisawa

Ryuji Takahashi

Shigetoshi Fujita

Kazuki Matsumura

Eiji Imaizumi

Kentarou Fujino

Takashi Shinpo

Yasunori Nishiguchi

Dai Sasaki

Shinya Arakawa

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.

Thermosetting resin composition, metal-clad laminated plate, insulating sheet, printed wiring board, method of manufacturing printed wiring board, and package substrate

A metal-clad laminate includes: an insulating layer; and a metal layer stacked on the insulating layer. The insulating layer includes: a first layer; and a second layer interposed between the first layer and the metal layer. The first layer contains a cured product of a first resin composition containing composite particles. The second layer contains a cured product of a second resin composition. The first resin composition contains composite particles, each having a core containing a fluororesin and a shell containing a silicon oxide that coats the core at least partially. The second resin composition may or may not contain composite particles. When the second resin composition contains the composite particles, a ratio of the composite particles in the second resin composition to solid content of the second resin composition is lower than a ratio of the composite particles in the first resin composition to solid content of the first resin composition.

Metal-clad laminate and printed wiring board

The present invention provides an epoxy resin composition exhibiting good workability in drilling, molding, and desmearing as well as good interlayer adhesion strength. This epoxy resin composition comprises an epoxy resin, a curing agent, and an inorganic filler. The epoxy resin is composed of a dicyclopentadiene-based epoxy resin and a novolac-based epoxy resin. The curing agent is a biphenyl-based phenol resin. The inorganic filler is composed of aluminum hydroxide and granular silica having an epoxy-silane treated surface. The epoxy resin composition contains 20 to 50% by weight of the granular silica. The epoxy resin composition contains 2 to 15% by weight, based on total weight of granular silica, of the aluminum hydroxide.

Epoxy resin composition, prepreg, and metal-clad laminate and multilayered printed wiring board

An epoxy resin composition for printed wiring board, characterized by containing (A) an epoxy resin component containing an epoxy resin (A-1) having nitrogen and bromine atoms in the same molecule, (B) a phenolic curing agent component containing a phenol resin (B-1), and (C) a curing accelerator component containing an imidazole-silane compound (C-1).

Epoxy resin composition for printed wiring board, resin composition varnish, prepreg, metal clad laminate, printed wiring board and multilayer printed wiring board

Growing community of inventors

Koriyama, Japan

Hiroki Tamiya