Hitachi Powdered Metals Co., Ltd.

Hitachi, Ltd.

Sadao Deyama

Shigemi Hirasawa

Yoshifumi Tomita

Koichi Sakai

Toshiya Yamamoto

Masato Hakoiwa

Tadao Kubo

A releasing agent of excellent heat insulating property suitably used for low speed die casting, which agent consists of an aqueous medium containing a dispersing agent and the particles of a releasing agent suspended therein, said particles of releasing agent consisting of a porous synthetic silicate compound having a specific surface area of 40 m.sup.2 /g or more or said synthetic silicate compound and wax.

Releasing agent for die casting

A cathode-ray tube is coated on the inner surface with a coating material which contains, in a weight ratio based on solid, 10 to 22% of graphite, 30 to 50% of a metal oxide, 2 to 9% of a surface treating agent and 25 to 42% of water glass, and in which at least 18% of graphite powders in its simplest form suspended in said coating material have a particle size of at least 1 micron.

Cathode-ray tubes and coating materials therefor

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Matsudo, Japan

Sadao Deyama