Sumitomo Chemical Company, Limited

Assignee Sumitomo Chemical Company, Limited (Tokyo, JP)... 

Nakao M. et al. US Patent No. 3,850,935 Nov. 26, 1974 Assigned Sumitomo Chemical Company, Limited, Osaka, Japan... 

T. Furukawa etal, US Patent 6,414,181 (July 2, 2002) Assignee Sumitomo Chemical Company, Limited Utility Pyrethroid Precursor... 

K. Akiyoshi, K. IwasaM, M. Niwano, and Y. Ohbe. Process for producing aromatic polyamide film. US Patent 5 659 007, assigned to Sumitomo Chemical Company, Limited (Osaka, JP), August 19, 1997. 

K.Ueno, H. Sugimoto, K. Hayatsu, Process for producing an aromatic polyester fiber, US Patent 4,503,005, assigned to Sumitomo Chemical Company Limited, March 5,1985. 

H. Harada, S. Iwase, S. Saito Liquid-crystalline polyester resin mixture, and reflecting plate and light-emitting device using the same US patent 20100051999 Assigned to Sumitomo chemical company, limited (Tokyo, JP) February 23,1989. 

YFukuhara, H.Yamauchi, Liquid Crystalline Polyester Resin Composition and connector using the same. Assigned to Sumitomo Chemical Company Limited, US Patent application number 20100163796, July 01,2010. 

In May 2005 Dow sold its Lumation LEP business to the Japanese Sumitomo Chemical Company Limited which is already engaged in this market activity and which will use its acquisition to broaden its product range. In December 2005 Dow, via its wholly-owned Union Carbide Corporation subsidiary sold its 50% holding in UOP LLC, a leading international process technology company, to Honeywell Specialty Materials whose interests include electronic materials. Other Dow disposals include the 92 million sale, to Ashland Composite Polymers, of the DERAKANE epoxy vinyl ester business whose products are used in fibre reinforced plastics and whose annual resin sales were around 70 million. 

Until 1982, almost all methyl methacrylate produced woddwide was derived from the acetone cyanohydrin (C-3) process. In 1982, Nippon Shokubai Kagaku Kogyo Company introduced an isobutylene-based (C-4) process, which was quickly followed by Mitsubishi Rayon Company in 1983 (66). Japan Methacryhc Monomer Company, a joint venture of Nippon Shokubai and Sumitomo Chemical Company, introduced a C-4-based plant in 1984 (67). Isobutylene processes are less economically attractive in the United States where isobutylene finds use in the synthesis of methyl /i / butyl ether, a pollution-reducing gasoline additive. BASF began operation of an ethylene-based (C-2) plant in Ludwigshafen, Germany, in 1990, but favorable economics appear to be limited to conditions unique to that site. 

A noninteractive approach has been built at the Sumitomo Chemical Company for the SYNSUP program in which 2500 reactions are coded. For this purpose several limiting instructions are necessary to prune the synthesis tree. The user may give several constraints on the number of steps... 

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