Tama Chemicals Co., Ltd.

Kabushiki Kaisha Toshiba

Moses Lake Industries, Inc.

Mamoru Yoshizako

Toshitsura Cho

Takeo Itou

Hidemi Matsuda

Shumpei Shimizu

Osamu Yagi

A distillable liquid containing non-volatile impurities is freed of those impurities by boiling the liquid to form vapors of the liquid, passing the vapors through a packed column heated to a temperature such that liquid entrained in the vapors is completely vaporized and the non-volatile impurities remain in the packed column, and condensing the vapors from the column.

Method for producing high purity chemicals

According to the invention, an antistatic/anti-reflecting film of high adhesive strength can be formed easily by forming an SiO.sub.2 film on a cathode-ray tube faceplate by means of a condensation reaction of polyalkyl siloxane consisting essentially of condensed alkyl silicates. As a result, the sintering conditions for forming an antistatic/anti-reflecting film can be set adequately. The antistatic effect can be further enhanced, reflection of the external light can be decreased, and workability can be greatly improved.

Method of manufacturing cathode-ray tube

A method of producing synthetic silica which is characterized by hydrolyzing a tetraalkoxysilane under a basic condition in the presence of an ammonium salt.

Method of producing granular synthetic silica

Growing community of inventors

Machida, Japan

Mamoru Yoshizako