公开(公告)号：DE2019596A1

公开(公告)日：1971-11-04

申请号：DE2019596

申请日：1970-04-23

Applicant: BAYER AG

Inventor： GRUDE FRITZ DIPL-ING ,  WOERNLE PETER DR ,  HALCOUR KURT DR ,  SCHWERDTEL WULF DR ,  SWODENK WOLFGANG DR

IPC: C07C4/22 ,  C07C3/26

Abstract: 1342953 Cyclopentadiene BAYER AG 23 April 1971 [23 April 1970] 10946/71 Heading C5E Cyclopentadiene is produced by splitting dicyclopentadiene which has been obtained in the form of a concentrate by the heat treatment of a C 5 fraction of a pyrolysis petrol and subsequent enrichment by fractional distillation and which contains thermally stable dimers of isoprene and co-dimers of Cyclopentadiene, isoprene and piperylene wherein the splitting is effected in liquid phase at normal or slightly excess pressure at 170-250‹ C. and wherein a concentration of 10-70% by wt. is maintained in the bottom sump of the splitting apparatus for said thermally stable dimers and co-dimers which are obtained as bottom product of the splitting treatment.