Canon Kabushiki Kaisha

Kurita Water Industries Ltd.

Sumitomo Metal Industries, Inc.

Kureha Kagaku Kogyo Kabushiki Kaisha

Sumikin Coke Company Limited

Ryoichi Takahashi

Hideo Sugi

Ayako Sekikawa

Mitsuru Sakurai

Minoru Aoyama

Kenji Tahara

Yoshie Katada

Yutaka Ban

Takeshi Komada

Masataka Isomoto

Masaaki Ishibashi

Ei Yamamoto

Yosuke Ohsawa

Naoki Fuei

Takuji Hosoi

Atsushi Mizukami

Eiji Sakaguchi

Takaaki Aiba

Shigeyuki Mayama

Tsuneo Mukai

Tutomu Konno

Electronic copier

Copying machine

An antimicrobial composition comprises a clathrate compound containing a water-soluble microbicide, and a dispersion medium. For example, the composition may comprise of a clathrate compound containing a water-soluble microbicide and having a particle size of 200 mesh at maximum, said clathrate compound being formed of 5-chloro-2-methyl-4-isothiazoline-3-one and at least one polymolecular host compound selected from the group consisting of 1, 1-di (2,4-dimethylphenyl)-2-propyne-1-ol; 1,1,6,6-tetra(2,4-dimethylphenyl)-2,4-hexadiyne-1,6-diol; 1,1-bis(4-hydroxyphenyl)cyclohexane; N,N,N',N'-tetra(cyclohexyl)-[1,1'biphenyl]-2,2'-dicarboxyamide; 2,2'-methylenebis(4-chlorophenol), deoxycholic acid; and 2,5-di-tert-butylhydroquinone and a dispersion medium.

Antimicrobial dispersion composition

A clathrate compound which comprises diethyltoluamide and a polymolecular host compound capable of taking up diethyltoluamide. The host compound is bisphenol compounds. Diethyltoluamide is stabilized by forming the clathrate compound.

Clathrate compound and process for stabilizing diethyltoluamide

A composition for killing harmful organisms, which contains a clathrate compound composed of one or more natural essential oils and/or derivatives thereof selected from the group consisting of the following substances (1) to (22) and a polymolecular host compound capable of including the natural essential oils and/or derivatives thereof:

Clathrate composition including essential oils and method of using same

Toner case for copying machine

A clathrate compound comprising a water-soluble microbicide and at least one of (a) a bisphenol compound represented by formula (I) and (b) deoxycholic acid represented by formula (II):

Clathrate compound

A clathrate compound is produced if a powdery host compound which reacts with a microbicide to form the clathrate compound is added into an aqueous solution of the microbicide. If the microbicide is separated from the clathrate compound, a microbicide of high purity can be obtained.

Method of producing a clathrate compound

Method of purifying a microbicide

The mass production system disclosed herein provides a method for producing highly aromatic petroleum pitch, comprising, preheating a liquefied petroleum residuum to a temperature of 450.degree.-520.degree. C. by passing the same through a tubular heater for 0.5-15 minutes, feeding the preheated residuum into a reaction vessel, thermally cracking the same by introducing an inert gas heated to a temperature of 400.degree.-2,000.degree. C. through a heating furnace into the reaction vessel for direct contact with the residuum for 0.5-10 hours, and adjusting to be coincident the ratio of the number of feeding flow lines for the preheated residuum from the tubular heater into the reaction vessels to the total number of reaction vessels with the ratio of the charging time .theta.C required for charging one reaction vessel with one feeding flow of preheated residuum to the total time .theta.T required for carrying out one batch of the thermal cracking in one reaction vessel.

Mass production system of highly aromatic petroleum pitch

Growing community of inventors

Tokyo, Japan

Ryoichi Takahashi