Process for producing monoalkenyl aromatic hydroca

专利名称：Process for producing monoalkenyl

aromatic hydrocarbon compound

发明人：Makoto Takagawa,Kenichi Nakamura,Kinji

Kato,Akio Hashimoto,Takayo Sasaki

申请号：US08/266145申请日：19940627公开号：US05527977A公开日：19960618

摘要：Their is disclosed a process for producing a monoalkenyl aromatic hydrocarboncompound (e.g. 5-(o-tolyl)-2-pentene) which comprises the steps of alkenylating a sidechain of an aromatic hydrocarbon compound having at lease one hydrogen atom bondedto &agr;- position of the side chain (e.g. alkylbenzene) by the use of a conjugated dienehaving 4 to 5 carbon atoms (e.g. 1-3 butadiene) in the presence an alkali metal-basedcatalyst supported on a carrier; removing at least part of the catalyst from the resultantreaction product by separating the same; inactivating and optionally removing thecatalyst contained in the reaction product; and thereafter distilling the reaction producein liquid form to separate and recover the objective monoalkenyl aromatic hydrocarboncompound. By virtue of using the above specific method, the process can prevent thechange in quality and properly of the objective product even during atmosphericdistillation, produce the objective product with high purity in high recovery race andoperate a distillation column during a long stable period of time.

申请人：MITSUBISHI GAS CHEMICAL COMPANY, INC.

代理机构：Frishauf, Holtz, Goodman, Langer & Chick

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