Hitachi, Ltd.

Hitachi Chemical Company, Ltd.

Ren Ito

Fumio Nakano

Yasuhiko Kando

Kiyoshige Kinugawa

Hirosada Morishita

Satoru Ogihara

Hisao Yokokura

Teruo Kitamura

Mikio Sato

Seikichi Tanno

Iwao Maekawa

Tadashi Ishibashi

Shigeki Komatsuzaki

Mitsuyoshi Shoji

Isao Uchigasaki

Yoshimichi Shibuya

Hideyuki Tobita

Masatoshi Ito

Moriichi Sato

Eiji Omori

Yoshiharu Honma

Etsuo Oe

Naoki Yokoyama

A coating composition comprising (A) a thermoplastic resin having a glass transition temperature of 0.degree. to 80.degree. C., (B) a compound having 2 or more hydroxyl groups in the molecule, (C) a thixotropic agent and (D) a solvent, and said coating composition having a viscosity of 3 to 50 poises at 25.degree. C. and a thixotropy of 2 or more can give a moistureproof insulating coating film with uniform and large thickness and very few bubbles by one-time treatment over packing circuit boards.

Moistureproof insulating coating composition for packing circuit boards

A stabilized absorption composition comprising (a) a halogenated hydrocarbon refrigerant, (b) a liquid absorbent of a polyethylene glycol methyl ether and (c) at least one stabilizer selected from phosphite esters, epoxy compounds and organotin compounds is excellent in stability and can be used for an absorption type refrigerator for a long period of time without causing corrosion.

Liquid absorbent for absorption type refrigerator

A liquid crystal display element which may have a multi-layer structure comprising substrates having electrodes and liquid crystal orientation controlling films on the sides thereof facing a liquid crystal layer and one or more liquid crystal layers interposed between said substrates, characterized in that the liquid crystal orientation controlling film is made from a copolymer produced by reacting a dibasic acid dihydrazide, a diamine and a tetracarboxylic acid dianhydride, followed by ring closure and dehydration with heating, is excellent in transparency and the electrode (partially reflected) pattern is hardly observable.

Liquid crystal display element

In a liquid crystal display element having a twisted structure wherein the periphery of two transparent glass substrates having electrodes according to desired display patterns is sealed with a sealing medium and a liquid crystal is enclosed in the space thus produced, the one characterized by having an undercoating film of metal oxide on the inner surface of each glass substrate, having a transparent electrode on each undercoating film of metal oxide and having an orientation controlling film made from an organic polymer and having abrasion grooves along a certain direction on each electrode can give a liquid crystal display element excellent in heat resistance of the orientation controlling film, excellent in adhesion to the glass substrates, and the like without causing a voltage drop, or without damaging rising of voltage-brightness property and response property.

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Hitachi, Japan

Ren Ito