Asahi Glass Company, Limited

Iwaki Glass Co., Ltd.

Satoshi Rokudai

Yuichi Kuroki

Ryuichi Tanabe

Akira Nakamura

Mikio Sasaki

A cathode ray tube glass comprises a clean cathode ray tube made of glass and a coating film composed of at least one water-soluble material selected from the group consisting of water-soluble salts, acids being solid at room temperature, monosaccharides and polysaccharides, which is formed on a glass surface of the cathode ray tube in an amount of 0.01-100 &mgr;g/cm or to a film thickness of 0.1-200 nm.

Cathode ray tube glass, a method for producing the cathode ray tube glass, and a method for cleaning the cathode ray tube glass

A cathode ray tube glass comprises a clean cathode ray tube made of glass and a coating film composed of at least one water-soluble material selected from the group consisting of water-soluble salts, acids being solid at room temperature, monosaccharides and polysaccharides, which is formed on a glass surface of the cathode ray tube in an amount of 0.01-100 &mgr;g/cm,or to a film thickness of 0.1-200 nm.

A hermetic sealing composition comprising 100 parts by weight of a basic composition consisting of from 80 to 99.9 wt % of a crystalline low melting glass powder containing lead and boron and from 0.1 to 20 wt % of a low expansion ceramic filler, and from 0.001 to 1.0 part by weight, in total, of at least one of an .alpha.-4PbO.B.sub.2 O.sub.3 crystal powder and a Pb.sub.3 O.sub.4 powder, incorporated to the basic composition, the thermal expansion coefficient of the sealing composition after firing being from 80.times.10.sup.-7 to 105.times.10.sup.-7 /.degree.C. within a range of from room temperature to 300.degree. C.

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Funabashi, Japan

Satoshi Rokudai