Continuous production of cyclohexene from cyclohexyl esters

U.S. Patent Number: 5382740

Abstract: A process for the continuous production of cyclohexene from a cyclohexyl ester of a carboxylic acid having 1 or 2 carbon atoms, which comprises the following steps: a) heating a cyclohexyl ester of a carboxylic acid having 1 or 2 carbon atoms in the presence of an acid catalyst with the formation of cyclohexene and a carboxylic acid having 1 or 2 carbon atoms; b) removing, by distillation, cyclohexene and carboxylic acid having 1 or 2 carbon atoms from the reaction mixture from stage a) at the same rate as they are formed; c) adding a cyclohexyl ester of a carboxylic acid having 1 or 2 carbon atoms to stage a) at the rate cyclohexene and carboxylic acid are distilled off; and d) separating the mixture comprising cyclohexene and carboxylic acid having 1 or 2 carbon atoms coming from stage b).

Inventors: Pinkos; Rolf (Bad Durkheim, DE), Fischer; Rolf (Heidelberg, DE), Dostalek; Roman (Roemerberg, DE)

Assignee: BASF Aktiengesellschaft (Ludwigshafen, DE)

Application Number: 07/993,053

Issued: 1995-01-17

Expired: 2007-01-17

Classes: 585/640 ; 585/638; 585/639

Field of search: 585/639,638,640 203/29,DIG.6

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