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Patent Searching and Data

Document Type and Number:
Japanese Patent JP2004505101
Kind Code:
The tert-butyl ester of an aliphatic C1-C4-carboxylic acid is prepared by reacting the carboxylic acid with isobutene in the liquid phase in the presence of an acidic catalyst by a continuous process in which the reaction is carried out in a reactor divided into a plurality of sections, the carboxylic acid, the isoolefin and the catalyst are fed into the first section of the reactor, the reaction mixture obtained is removed from the last section of the reactor and the ester is isolated therefrom, the reaction temperature in the reactor being controlled so that it is from 10 to 40° C. and is highest in the first section of the reactor. The novel process permits the technically simple, economical and environmentally friendly preparation of tertiary butyl esters of saturated and unsaturated C1-C4-carboxylic acids.

Looprecht Croker
Gerhard Nestler
Werner Schmidt
Vinfried Shmu
Application Number:
Publication Date:
February 19, 2004
Filing Date:
July 27, 2001
Export Citation:
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BASF Aktiengesellschaft
International Classes:
B01J19/26; C07B61/00; C07C67/04; C07C69/14; C07C69/54; (IPC1-7): C07C67/04; B01J19/26; C07C69/14; C07C69/54
Domestic Patent References:
Foreign References:
Attorney, Agent or Firm:
Toshio Yano
Toshiomi Yamazaki
Takuya Kuno
Einzel Felix-Reinhard
Reinhard Einsel