公开(公告)号：US3804913A

公开(公告)日：1974-04-16

申请号：US29716772

申请日：1972-10-12

Applicant: CITIES SERVICE CO

Inventor： GOODWIN C

IPC: C07C2/46 ,  C07C3/10

CPC classification number: C07C2/465 ,  C07C2531/02 ,  C07C2531/14 ,  C07C2531/22 ,  C07C2601/20 ,  Y10S585/954 ,  C07C13/277

Abstract: IMPROVED RESULTS ARE OBTAINED IN THE OLIGOMERIZATION OF ISOPRENE TO FORM TRIMETHYL CYCLODODECATRIENE WHEN THE REACTOR IS PARTIALLY VENTED, AFTER THE COMPLETION OF THE FORMATION OF THE CATALYST COMPOSITION AND BEFORE ONSET OF APPRECIABLE OLIGOMERIZATION. THE VENTED PRODUCTS ARE MAINLY THOSE FORMED BY REACTION OF TRIETHYL ALUMINUM WITH VARIOUS IMPURITIES IN THE REACTOR.