Nissan Chemical Industries Limited

Ricoh Company, Ltd.

Other

Toyota Jidosha Kabushiki Kaisha

Idemitsu Petrochemical Co., Ltd.

Tohoku Techno Arch Co., Ltd.

Genesis Research Institute, Incorporated

Shuzurifuresher Kaihatsukyodokumiai

Kunio Arai

Tadafumi Ajiri

Kunitoshi Sugiyama

Hideyuki Santoh

Yoshihiko Itoh

Hiroshi Inomata

Richard Lee Smith, Jr

Isao Ota

Akihiro Shishikura

Hideo Hattori

Katsuhisa Yamaguchi

Mitsuru Sasaki

Hiroshi Kimbara

Shin-ichi Yuki

A system for processing supercritical and subcritical fluid capable of bringing the inside of at least one processing container () formed in a flow passage into a supercritical or subcritical high pressure field, wherein thermal operation is applied to process fluid to apply thermal expansion to the fluid to produce a pressure difference between the processing container () and the outside, whereby a specified temperature and the high pressure field suitable for the processing of the supercritical or subcritical fluid can be provided in the processing container ().

System and device for processing supercritical and subcritical fluid

A method for use in two-components electrostatic image developers is disclosed, in which secure separation of a carrier coating resinous materials from a core magnetic material is achieved without affecting the properties of the core materials through process steps benign to the environment in super- or sub-critical water compositions under the conditions of a temperature of 300&#xb0; C. or more and a pressure of 20 MPa. The core magnetic material is subsequently recycled for forming carrier. This method may also be useful for processing waste including magnetic materials with silicone resin coating.

System for separating electrophotographic carrier compositions and recycling the compositions

A method for forming II-type cellulose, which comprises introducing together a slurry having water and a I-type cellulose dispersed therein and water in the state of high temperature and high pressure to a tubular reactor () contacting the I-type cellulose with a hot water in a supercritical state or subcritical state for a predetermined time in the tubular reactor (), to thereby cleave a part of the hydrogen bonds in the I-type cellulose and dissolve the I-type cellulose into the water in a supercritical state or subcritical state, cooling a cellulose solution discharged from the tubular reactor () in a cooler () to room temperature or lower, followed by allowing to stand, to thereby precipitate crystals of II-type cellulose having a molecular weight lower than that of the I-type cellulose, and separating the resultant II-type cellulose from a solvent. The method allows the preparation of pure II-type cellulose by the use of a simple process.

Method for forming cellulose

A method for use in two-components electrostatic image developers is disclosed, in which secure separation of a carrier coating resinous materials from a core magnetic material is achieved without affecting the properties of the core materials through process steps benign to the environment in super- or sub-critical water compositions under the conditions of a temperature of 300&deg; C. or more and a pressure of 20 MPa. The core magnetic material is subsequently recycled for forming carrier. This method may also be useful for processing waste including magnetic materials with silicone resin coating.

Method of separating electrophotographic carrier compositions and recycling the compositions

Method for using high density compressed liquefied gases in cleaning

Disclosed herein is a process for producing fine metal oxide particles comprising the step of heat-treating an aqueous solution of a metal salt at a temperature of not lower than 200.degree. C. under a pressure of not less than 160 kg/cm.sup.2 for 1 second to 1 hour so as to bring into the decomposition reaction of said metal salt.

Process for producing fine metal oxide particles

A method for producing fine particles of barium ferrite, which comprises reacting an aqueous solution comprising an iron compound, a barium compound and an alkaline substance, wherein the molar ratio of hydroxyl groups of the alkaline substance to the total of anions of the iron compound and the barium compound in the aqueous solution is from 1 to 4, and the reaction is carried out at a temperature of at least 250.degree. C. under a pressure of at least 200 kg/cm.sup.2 using a flow type reactor.

Method for producing fine particles of barium ferrite

The present invention relates to a process for inexpensively and effectively recovering a high-purity organic acid, according to which a crude organic acid is subjected to extraction treatment with an organic solvent to obtain an organic solvent extract containing an organic acid; the organic solvent extract is mixed with a high-pressure gas to precipitate and separate impurities thereby obtaining a solution containing a high-purity organic acid; and the organic acid is separated from the solution to obtain a high-purity organic acid.

Process for recovering high-purity organic acid

Growing community of inventors

Sendai, Japan

Kunio Arai