Hitachi, Ltd.

Mitsubishi Chemical Industries Limited

Hitachi Chemical Company, Ltd.

Hitachi Metals, Ltd.

Kanto Chemical Co., Inc.

Nitto-denko Corporation

Takeda Chemical Industries, Inc.

Hitachi Koki Co., Ltd.

Mitsubishi Kasei Corporation

Denko Corporation

Akio Mukoh

Mikio Sato

Shuji Imazeki

Teruo Kitamura

Masaharu Kaneko

Susumu Era

Hirosada Morishita

Hisao Yokokura

Akio Takahashi

Tetsuo Ozawa

Tomio Yoneyama

Setsuo Kobayashi

Hidetoshi Abe

Kishiro Iwasaki

Shintaroo Hattori

Tadao Nakata

Akira Nagai

Nobuyuki Hayashi

Seiji Tai

Shigeru Hayashida

Masato Isogai

Yasuki Mori

Yasuhiko Kando

Seiichi Imahori

Yasuo Hanawa

Katsumi Kondo

Masahiro Yoshida

Yoshiharu Nagae

Hideaki Kawakami

Kenji Suzuki

Masao Suzuki

Shin Nishimura

Mitsuo Katayose

Tsuneaki Kawanishi

Shunichi Numata

Hideo Hagiwara

Takayuki Akimoto

Masahiro Suzuki

Koichi Kamijima

Toru Koyama

Yoshiaki Okabe

Tsunenori Fujii

Junko Iwanami

Kaoru Koto

Hisashi Okawa

Yutaka Ito

Haruo Akahoshi

Hitoshi Ono

Fumiyuki Kobayashi

Hiroshi Suzuki

Satoru Amou

Takayuki Nakakawaji

Atsushi Kakuta

Fumio Nakano

Junichi Katagiri

Shigeki Komatsuzaki

Ikushi Kano

Yasuo Fujimura

Yoshinori Kawai

Keiji Fukushi

Noboru Masutani

Hirokazu Takasaki

Yutaka Sugita

Takashi Inukai

Kenji Furukawa

Kanetsugu Terashima

Junichi Hirakata

Kazuji Yamada

Toshikazu Narahara

Masaaki Kitajima

Takao Umeda

Tadahiko Miyoshi

Koji Noguchi

Hiroyoshi Kokaku

Noriyuki Kinjo

Masayasu Anzai

Yoshio Sato

Satoru Ogihara

Tetsuo Ito

Nobuyoshi Hoshi

Tokihito Suwa

Yasushi Iwakabe

Eiji Kaneko

Mitsuru Kawada

Kunio Miyazaki

Mineo Kawamoto

Hirokazu Inoue

Koichi Matsumura

Shigeo Amagi

Yasuo Kikuchi

Tohru Koyama

Mitsuyoshi Shoji

Kazuyoshi Tokunaga

Yasuo Imanishi

Shigeo Suzuki

Osamu Miura

Shigeyoshi Tanaka

Toyofusa Yoshimura

Yoshihiro Sugihara

Michio Ooue

A thin film multilayer wiring material excellent in reliability, yield, productivity, and higher positioning accuracy includes an insulation organic film having a wiring pattern on one surface and an adhesive layer on another principal surface. The insulation organic film is a polyimide film having a heat resistance at a pyrolysis beginning temperature of 350.degree. to 550.degree. C., a dielectric constant of 3.5-2.2 and a flame retardance of V-0 or V-1 according to the UL-94 standard. The adhesive layer contains an ether bismaleimide compound.

Method for producing thin film multilayer wiring board

A polymerzable compound represented by the general formula (1) X--R.sub.1 --Y where X is an unsaturated imide group having substituents R.sub.2 and R.sub.3, or an itacon imide group where R.sub.2 and R.sub.3 are selected from the group consisting of hydrogen, a lower alkyl group and an aromatic group having a substituent p which is hydrogen, a lower alkyl group, or an alkoxy group, and Y is a styryl group, and R.sub.1 is a divalent organic group. The polymerizable compounds is excellent in formability, and find a wide variety of applications because they have functional groups different in reactivity from each other and hence allow the curing conditions to control. The cured polymers are excellent in thermal durability, mechanical properties and electrical properties, making it possible to achieve higher performance, higher reliability, highly compact and lower weight of electric apparatuses and electronic parts.

Polymerizable compouund, process for producing same and setting

A superconducting magnet coil is produced by winding a superconducting wire to form a coil; impregnating the coil with a curable resin composition of low viscosity which contains for example at least one epoxy resin selected from the group consisting of diglycidyl ether of bisphenol A, diglycidyl ether of bisphenol F and diglycidyl ether of bisphenol AF, all having a number-average molecular weight of 350-1,000, a flexibilizer and a curing catalyst, to obtain a curable-resin composition-impregnated coil; and heating the curable-resin-composition-impregnated coil to cure the composition.

Method for producing a superconducting magnet coil

A naphthalocyanine derivative of the formula: ##STR1## wherein M, Y, R.sup.1, k, l, m, n are as defined in the specification, is an effective substance for forming a recording layer on a substrate of an optical recording medium having high sensitivity with good properties.

Naphthalocyanine derivatives, production thereof, optical recording

A polymerzable compound represented by the general formula (1) X--R.sub.1 --Y where X is un unsaturated imide group having substituents R.sub.2 and R.sub.3, or an itacon imide group where R.sub.2 and R.sub.3 are selected from the group consisting of hydrogen, a lower alkyl group and an aromatic group having a substituent p which is hydrogen, a lower alkyl group, or an alkoxy group, and Y is a styryl group, and R.sub.1 is a divalent organic group. The polymerizable compounds is excellent in formability, and find a wide variety of applications because they have functional groups different in reactivity from each other and hence allow the curing conditions to control. The cured polymers are excellent in thermal durability, mechanical properties and electrical properties, making it possible to achieve higher performance, higher reliability, highly compact and lower weight of electric apparatuses and electronic parts.

Polymerizable compound, process for producing same and setting

An epoxy resin composition for insulating a coil which comprises at least one polyfunctional epoxy resin, at least one latent curing catalyst, at least one filler and at least one surfactant, wherein the ceiling is set to the acid anhydride content in the composition at 10% by weight based on the weight of the epoxy resin; and a coil molded out of said resin composition.

Epoxy resin composition for insulating a coil, and a coil molded from

A superconducting magnet coil contains a coil of superconducting wire and a cured product of a curable resin composition with which the coil has been impregnated, the cured product having a thermal shrinkage factor of 1.5-0.3%, preferably 1.0-0.3%, when cooled from the glass transition temperature to 4.2K, a bend-breaking strain of 2.9-3.9%, preferably 3.2-3.9%, at 4.2K and a modulus of 500-1,000 kg/mm.sup.2 at 4.2K, or undergoing a thermal stress of 0-10 kg/mm.sup.2 when cooled from the glass transition temperature to 4.2K and resisting to quench during superconducting operation. It is produced by winding a superconducting wire to form a coil; impregnating the coil with a curable resin composition of low viscosity which contains for example at least one epoxy resin selected from the group consisting of diglycidyl ether of bisphenol A, diglycidyl ether of bisphenol F and diglycidyl ether of bisphenol AF, all having a number-average molecular weight of 350-1,000, a flexibilizer and a curing catalyst, to obtain a curable-resin composition-impregnated coil; and heating the curable-resin-composition-impregnated coil to cure the composition.

Superconducting magnet coil and curable resin composition used therein

Adhesive agent for substrate of electroless plating characterized in comprising epoxy resin, synthetic rubber, and phenolic resin as main components, a hardener of the epoxy resin, inorganic filler having hydroxyl group, and solvent. The adhesive agent is hardened at relatively low temperature (about 150.degree. C.) in short period (within 30 minutes) without giving warp and distortion to the insulation substrate, and moreover its insulation resistance after hardening is high. The adhesive agent is preferable as an adhesive agent for a printed circuit board.

Adhesive agent for substrate of electroless plating, printed circuit

A multilayer printed circuit board comprising a plurality of alternately laminated layers of insulating layers and circuit conductor layers having a signal transmission delay time of 6.0 ns/m or less, excellent in heat resistance, adhesive, fire retardance, etc. can be produced by forming insulating layers using a fluorine-containing thermosetting resin composition.

Multilayer printed circuit board and production thereof

An LSI mounting substrate having a multilayered thin film wiring portion, with the thin film wiring portion being divided into wiring units each composed of a plurality of wiring layers, with the wirings between the units being electrically connected through connecting pads defined in the same surface as that of a surface conductive layer of the unit.

Mounting substrate

A thermoplastic resin composition for casting high-voltage coils containing two kinds of fillers (A) and (B), and products as molded coils and panels obtained by casting and curing the composition. The composition of the present invention contains 60%-85% by weight, based on the total weight of the composition, of a silica type filler which is an admixture (A) a spherical silica having an average particle diameter of 0.1-0.9 .mu.m and (B) a ground silica having an average particle diameter of 3-9 .mu., the ratio A/(A+B) being 1%-7% by weight. Products as molded coils and panels prepared by using the composition have good resistance to cracking and resistance to moisture.

Thermosetting resin composition for casting high-voltage coil, and

A nonlinear optical element comprising a tetraazaporphyrin compound represented by the formula (I): ##STR1## This nonlinear optical element is excellent in that it is improved over low switching speed of the conventional inorganic materials and over small nonlinearity and poor chemical and physical stability and workability of the conventional organic materials.

Nonlinear optical element

A liquid crystal display device comprising: a liquid crystal display element formed by holding, between two substrates at least one of which has a light-permeable electrode, a liquid crystal layer in which liquid crystal molecules of a nematic liquid crystal having positive dielectric anisotropy and containing an optically active substance has a helical axis perpendicular to the substrates between the substrates and are helically oriented, and the liquid crystal molecules between the substrates have a twist angle of 180 to 270 degrees, and a phase plate formed by stacking water surface development films of an organic polymer with changing the orientation axes thereof at a constant angle, wherein the contrast ratio, a ratio between brightness in white display and brightness in black display, is remarkably excellent over that of a device obtained by stacking plastic films, and the transmissivity, a quotient of background brightness and light source brightness, is equivalent to that of a conventional double layer structure liquid crystal display device.

Liquid crystal display device and phase plate therefor

There are disclosed a novel naphthalocyanine derivative represented by the general formula [I] or [II] shown below, a process for preparing said derivative, an optical information recording medium using said derivative, and a process for preparing thereof: ##STR1## wherein M is a metal, metal oxide, metal hydroxide and the like, R.sup.1 is an alkyl group of 1-22 carbon atoms, n is an integer of 1 to 4, and Y.sub.1 and Y.sub.2 aryloxy group and the like.

Naphthalocyanine derivative and production process thereof, as well as

2,3-dicyanonaphthalene derivatives useful in the synthesis of naphthalocyanine derivatives are disclosed. The 2,3-dicyanonaphthalene derivatives have the formula: ##STR1## wherein each R.sup.1 may be the same or different and represents an alkyl group, substituted alkyl group, or aryl group; and n is an integer from 1 to 4.

2,3-dicyanonaphthalene derivatives

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Mito, Japan

Akio Mukoh