公开(公告)号：EP1478610B1

公开(公告)日：2009-01-07

申请号：EP03709709.4

申请日：2003-02-17

Applicant: BASF SE

Inventor： WALSDORFF, Christian ,  SCHINDLER, Götz-Peter ,  HARTH, Klaus ,  HIBST, Hartmut

IPC: C07C2/52 ,  C07C5/367

CPC classification number: C07C5/367 ,  C07C2/52 ,  C07C13/20 ,  C07C15/073 ,  C07C15/46

Abstract: The invention relates to a method for producing 4-vinylcyclohexene comprising the following steps: (A) a feed gas stream containing n-butane is prepared; (B) said feed gas stream containing n-butane is fed to at least one dehydrogenation zone, where it is dehydrogenated from n-butane to butadiene, whereby a butadiene, n-butane, optionally 1-butene and 2-butene and optionally water vapour and a product stream containing additional minor constituents are obtained; (C) the product stream from the dehydrogenation, optionally after separation of the water vapour and minor constituents, is fed to a dimerization zone, where the butadiene is catalytically dimerized to obtain 4-vinylcyclohexene, n-butane and optionally 1-butene, 2-butene and a product stream containing butadiene that has not been converted; (D) the 4-vinylcyclohexene from the dimerization product stream is separated and the n-butane and optionally 1-butene, 2-butene and the butadiene that has not been converted are returned to the dehydrogenation zone.