Asahi Glass Company, Limited

Asaki Glass Company Ltd.

Shunichi Samejima

Shinsuke Morikawa

Teruo Asano

Naohiro Watanabe

Masaaki Yamabe

Shin Tatematsu

Isamu Kaneko

Seiji Munekata

Kazuki Jinushi

Masaru Nakamura

Hidekazu Okamoto

Kazuya Oharu

Toshihiro Tanuma

Gen Kojima

Keiichi Ohnishi

Masashi Matsuo

Masaru Yoshitake

Motoi Kamba

Kenroh Kitamura

Toru Kamimura

Seisaku Kumai

Tsunehiko Sugawara

Takashi Ohmori

Kiyotaka Arai

Jiro Nishihama

Makoto Noshiro

Masaru Yositake

Yoko Usami

A vacuum envelope for display which reduces a stress and a deflection in a screen area of a panel face portion and has a light weight and which is suitable for a cathode ray tube or a field emission display, wherein the screen area is composed of a complex layer member comprising a glass layer as an inner layer and a transparent resin as an outer layer, and the proportion of the Young's modulus of the transparent resin to the Young's modulus of the glass layer is {fraction (1/10)}-&frac15;.

Vacuum envelope for a display device

A process for producing 1,1-dichloro-1,2,2,2-tetrafluoroethane, which comprises isomerizing 1,1,2-trichloro-1,2,2-trifluoroethane to form 1,1,1-trichloro-2,2,2-trifluoroethane, followed by fluorination with hydrofluoric acid.

Process for producing 1,1-dichloro-12,2,2-tetrafluoroethane

A hydrochlorofluorocarbon azeotropic or azeotropic-like mixture comprising at least one member selected from the group consisting of hydrogen-containing fluoropropanes of the formula I:

Hydrochlorofluorocarbon azeotropic or azeotropic-like mixture

A process for producing a hydrogen-containing 2,2-difluoropropane of the following formula (2), which comprises subjecting a 2,2-difluoropropane of the following formula (1) to hydrogen reduction:

Process for producing a hydrogen-containing 2,2-difluoropropane

A process for producing 1,1,1,2-tetrafluoroethane, which comprises reacting 2,2-dichloro-1,1,1,2-tetrafluoroethane, 2-chloro-1,1,1,2-tetrafluoroethane or a mixture thereof with hydrogen in the presence of a hydrogenation catalyst consisting essentially of a Group VIII element as the main component and at least one element selected from the group consisting of Group IB elements, lanthanum and lanthanide elements, as an additional component.

Process for producing 1,1,1,2-tetrafluoroethane

A hydrochlorofluoropropane azeotropic or azeotropic-like composition comprising at least two members selected from the group consisting of hydrochlorofluoropropanes of the formula I:

Azeotropic or azeotropic-like composition of hydrochlorofluoropropane

A solvent consisting essentially of a compound of the formula:

Halogenated hydrocarbon solvents

Methods for treating substrates by applying a halogenated hydrocarbon

A process for producing a 2,2-difluoropropane of the following formula (2), which comprises fluorinating a chlorine-containing 2,2-halogenopropane of the following formula (1) by hydrogen fluoride or a fluorinating agent:

Process for producing a 2,2-difluoropropane

A method for cleaning a surface of a substrate which comprises treating the surface with a dichloro-pentafluoro-propane solvent. The method is specifically directed to the use of 1,1-dichloro-2,2,3,3,3-pentafluoro propane and 1,3-dichloro-1,1,2,2,3-pentafluoropropane as the cleaning solvent.

Method of cleaning a substrate using a dichloropentafluoropropane

A method for cyclic polymerization, wherein a fluorine-containing monomer is subjected to cyclic polymerization, the fluorine-containing monomer having two carbon-carbon multiple bonds, each having different polymerizability, as linked by a linking chain having a straight chain portion to from 2 to 7 atoms, and having a fluorine content of at least 10% by weight.

Cyclic polymerization

A fluorine-containing thermoplastic resinous polymer which consist essentially of a group (a) of repeating units of a cyclic structure to be represented by the following general formula: ##STR1## (where: n is an integer of 1 to 2); the polymer having a molecular weight such that the intrinsic viscosity thereof may become at least 0.1. A fluorine-containing thermoplastic resinous polymer which consists essentially of:

Novel fluorine-containing cyclic polymer

A process for producing a perfluoroacrylic acid ester represented by the general formula CF.sub.2 .dbd.CFCOOR where R is a monovalent organic substituent, which comprises pyrolyzing a monoester of perfluorosuccinyl fluoride represented by the general formula FOCCF.sub.2 CF.sub.2 COOR where R is as defined above, in a vapor phase.

Process for preparing a perfluoroacrylic acid ester

A difluorohaloacetyl fluoride is produced by (a) producing an intermediate having a group of the formula

Process for producing difluorohaloacetyl fluoride

A fluorinated vinyl ether having an ester group which has the formula

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Tokyo, Japan

Shunichi Samejima