Chiyoda Corporation

AMV A modified process for making ammonia, invented by ICI and announced in 1982. It uses a new catalyst and operates at a pressure close to that at which the synthesis gas has been generated, thereby saving energy. Construction licenses have been granted to Chiyoda Corporation, Kvaeme, and Mannesman. In 1990 it was operated in the CIL plant in Ontario, Canada and then in Henan Province, China. 

CT-BISA [Chiyoda Thoroughbred bisphenol-A] A catalytic process for making Bisphenol-A from phenol and acetone. The catalyst is an acidic ion-exchange resin. The product is used for making polycarbonate resins. Developed and offered by Chiyoda Corporation, Japan. The first plant was operated in Tobata, Japan, in 1997. 

Chiyoda and DSM Alliance in Caprolactam Projects, Chiyoda Corporation News Release, Yokohama, Japan, April 26, 2001. 

Acetica A process for making acetic acid by the heterogeneous carbonylation of methanol in a bubble column reactor. The catalyst is a rhodium carbonyl iodide, anchored by ion-pairing to a polyvinyl pyridine resin. Developed by Chiyoda Corporation and UOP and first described in 1998. Licensed to Guizhou Crystal Organic Chemical Group, China, in 2002 one plant was under construction in 2005. 

ALTAM A process for making caprolactam from butadiene and carbon monoxide. Developed by DSM in the late 1990s and subsequently improved by Shell Chemicals, which contributed catalyst know-how. In the first two steps of the process, butadiene undergoes two hydroformylations with carbon monoxide, followed by reductive animation with ammonia and then cyclization to caprolactam. First commercialization was expected in Taiwan. A joint venture with Chiyoda Corporation, to further develop and commercialize the process, was announced in 2002. 

Mobil Technology Company, P.O. Box 480, Paulsboro, NJ 08066-0480 Chiyoda Corporation, 3-13 Moriya-cho, Kanagawa-Ku, Yokohama 221, Japan... 

Chiyoda Corporation, 3-13 Moriya-cho, Kanagawa-ku, Yokohama 221, Japan... 

We are indebted to Chiyoda Corporation, Mobil Technology Company, and Akzo Nobel Catalysts for allowing us to participate in this project. And last but not least, we are grateful to Karin Haitsma-Atema from Akzo Nobel Catalysts who enthusiasticly organized and directed the enormous flow of paper that started as a call for papers in 1993 and continued until the final manuscripts were ready early in 1996. 

TORU TAKATSUKA Chiyoda Corporation 3-13 Moriya-cho Kanagawa-Ku Yokohama 221 Japan... 

Chiyoda Corporation, Tsurumichuo 2-12-1, Tsurumi-ku, Yokohama 221, Japan Fuji Oil Co. LTD, Ohtemachi, 1-2-3, Chiyoda-ku, Tokyo 100, Japan... 

Mr. Ryuichiro Kajiyama Assistant Manager Chiyoda Corporation... 

It has been recently announced that technology for separation of para- and meto-cymenes is offered by Chiyoda Corporation in Yokohama, Japan through Kellog. As in the case of phenol from benzene via cumene, acetone is obtained as a co-product during production of cresols from toluene via cymenes. 

Recently Chiyoda Corporation, Japan, has announced that the company through a licensing agreement with Kellog is in a position to offer a suitable technology for separation of meta and para-cresol from an isomeric mixture of cresols. Though not much is known about Chiyoda s process, it is learnt that the same is not very different from UOP s Cresex process. 

Chiyoda Corporation and Mitsubishi Paper Mills [32-34] developed a system for in situ oxidation of sodium sulfide in white liquor to polysulfide increasing the pulp yield in the pulping process. 

N. ITOH, Utsunomiya University, Japan and K. MIMURA, Chiyoda Corporation, Japan... 

Prof. K. Mimura Engineering Solution Unit Chiyoda Corporation 4-6-2 Minatomirai, Nishi-ku Yokohama 220-8765 Japan... 

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