Nippon Chemical Industrial Co., Ltd.

Seikichi Tabei

Michinori Hashimoto

Shozo Ichimura

Masatoshi Itoi

Shigeo Sasaki

Michiro Kuwayama

Method for manufacturing an aptatite slurry

An air purifying agent comprising a carrier which contains short pulp fiber, on which one or more chemical components selected from the group consisting of acids, alkalis, oxidizing agents, reducing agents and antimicrobial components are supported. According to the present invention, an air purifying agent which is low in weight, is safe to handle and exhibits excellent effect in removing contaminated gases containing low concentrations of contaminants.

Air purifying agent and a process for producing same

An air purifying agent comprising a carbonaceous carrier and activated manganese dioxide and iodate supported thereon. According to the present invention, there can be provided an air purifying agent which is safe to handle and exhibits sufficient effect for removing contaminated gases.

An additive for continuous casting of steel comprising as a base material a neutral to basic amorphous fluorine-containing calcium silicate containing up to 10% by weight R.sub.2 O.sub.3, wherein R represents Al and F, and up to 1.5% by weight P.sub.2 O.sub.5 ; this additive prevents surface defects on billets and final products derived therefrom in continuous casting.

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Tokyo, Japan

Seikichi Tabei