Mitsui Toatsu Chemicals, Incorporated

Mitsui Chemicals, Inc.

Shigeo Kiba

Kimiteru Tagawa

Junji Saito

Tomoaki Matsugi

Hideki Umehara

Takayuki Kubo

Kenji Abe

Etsuo Ohkawado

Moritsugu Morita

Haruka Saito

Naoshi Mineta

Hirohiko Murase

Kenji Tanabe

Fujio Hayashi

Noritoshi Utsuno

Seiichi Takahashi

Satoru Suda

The cyclic olefin copolymer composition of the present invention includes a cyclic olefin copolymer (m) including a specific amount of a specific repeating unit and a cyclic olefin copolymer (n) different from the cyclic olefin copolymer (m). The cyclic olefin copolymer (n) includes at least one type selected from a copolymer (n1) of ethylene or &#x3b1;-olefin and cyclic olefin (where the copolymer (n1) does not include a repeating unit derived from specific cyclic non-conjugated dienes) and a cyclic olefin ring-opening polymer (n2), and when a total amount of the cyclic olefin copolymer (m) and the cyclic olefin copolymer (n) is 100% by mass, a content of the cyclic olefin copolymer (m) is 5% by mass or more to 95% by mass or less, and a content of the cyclic olefin copolymer (n) is 5% by mass or more to 95% by mass or less.

Cyclic olefin copolymer composition and cross-linked product thereof

An insulating adhesive tape which comprises a base supporting film and an adhesive layer formed on at least one surface thereof, said adhesive layer being formed of a thermoplastic polymer comprising a thermoplastic polyimide, wherein said thermoplastic polymer has a glass transition temperature ranging from 180.degree. C. to 280.degree. C. and an elastic modulus ranging from 10.sup.10 dyne/cm.sup.2 to 10.sup.11 dyne/cm.sup.2 at 25.degree. C., said modulus including a value ranging from 10.sup.2 dyne/cm.sup.2 to 10.sup.9 dyne/cm.sup.2 at a temperature between 250.degree. C. and 300.degree. C.

Insulating adhesive tape, and lead frame and semiconductor device

Ferromagnetic metal particles and preparation process thereof

Growing community of inventors

Yokohama, Japan

Shigeo Kiba