Kyushu Refractories Co., Ltd.

Hiroaki Yanagida

Tadao Shimizu

Yasuo Nishikawa

Tetsuro Yoshida

Masayosi Hori

Fibrous compounds having a ratio of length to diameter of at least 10 of the formula MO.TiO.sub.2 wherein M is a bivalent metal and processes for preparing these compounds are described. Preferably M is selected from the group consisting of barium, strontium, calcium, magnesium, cobalt, lead, zinc, beryllium, and cadmium. The processes for preparing the compounds utilize fibrous potassium titanate hydrates or fibrous titanium dioxide hydrates both having a ratio of length to diameter of at least 10 as the starting material to prepare the compounds.

Processes for the preparation of fiberous titanic acid metal salts

A novel noncrystalline fibrous potassium titanate and a process for preparing said titanate fiber by calcination of a mixture of potassium compound(s) and titanium compound(s) at a temperature of from 800.degree. C. to the melting point of the mixture to obtain whiskers formed on the surface thereof; and an improved process for preparing fibrous potassium hexatitanate which comprises calcining hydrated fibrous potassium titanate at a temperature of 500.degree. to 900.degree. C. or which comprises kneading a mixture of potassium compound(s) and titanium compound(s), and calcining the thus kneaded mixture at a temperature of 1150.degree. to 1300.degree. C. to obtain fibers from the inside of the bulk of the calcined mixture are described.

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Kashiwashi, Japan

Hiroaki Yanagida