Title:
CONTINUOUS PRODUCTION OF ORTHO-ALKYLATED PHENOLIC COMPOUND
Document Type and Number:
Japanese Patent JP3519427
Kind Code:
B2
Abstract:
PURPOSE: To provide a process for the continuous production of an ortho- alkylated phenolic compound capable of suppressing the formation of impurity by-products, increasing the orthoselectivity and keeping the high selectivity over a long period.
CONSTITUTION: An ortho-alkylated phenolic compound is produced by contacting a phenolic compound with an alcohol in vapor phase in the presence of a supported catalyst containing an iron oxide using a fluidized bed reactor, thereby alkylating the phenolic compound. In the above process, the selectivity of the phenolic compound is improved and the ortho-alkylated phenolic compound is continuously produced in high efficiency by using a reactor and a regeneration apparatus, extracting a prescribed amount of the catalyst from the reactor at prescribed time interval and returning a prescribed amount of the catalyst from the regeneration apparatus to the concentrated catalyst phase of the reactor.
Inventors:
Takahashi, Kiyoshi
Sakai, Katsuhiko
Sakai, Katsuhiko
Application Number:
JP10880493A
Publication Date:
April 12, 2004
Filing Date:
April 13, 1993
Export Citation:
Assignee:
ASAHI CHEM IND CO LTD
International Classes:
B01J23/847; B01J23/84; C07B61/00; C07C37/16; C07C39/06; (IPC1-7): C07C39/06; B01J23/847; C07C37/16
Attorney, Agent or Firm:
清水 猛 （外３名）
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