公开(公告)号：MY169725A

公开(公告)日：2019-05-14

申请号：MYPI2014000967

申请日：2012-10-10

Applicant: BASF SE

Inventor： DR KONIG HANNAH MARIA ,  URBAN RAINER ,  DR MUHLBACH KLAUS ,  DR WETTLING THOMAS ,  DR RACHWALSKY UWE ,  HIRSCH STEFAN ,  BERG ANNE ,  DR MACH HELMUT

Abstract: Production of isobutene homo- or copolymers having a number average molecular weight of 500 to 5,000,000 by polymerisation of isobutene or an isobutene- containing monomer mixture in the presence of a Lewis acid or a complex containing a Lewis acid as a polymerisation catalyst, the polymerisation being performed in the presence of at least one hemiacetal or acetal, which can be obtained by protonic acid- catalysed reaction of at least one C1 to C12 hydrocarbyl alcohol with at least one aldehyde or ketone having 1 to 12 carbon atoms.