公开(公告)号：US11072570B2

公开(公告)日：2021-07-27

申请号：US13735385

申请日：2013-01-07

Applicant: BASF SE

Inventor： Thomas Wettling ,  Stefan Hirsch ,  Markus Brym ,  Markus Weis

IPC: C07C2/02 ,  C08F110/10

Abstract: Continuous preparation of polyisobutylene having a content of terminal double bonds of more than 50% by polymerizing isobutene in the presence of a polymerization catalyst customary therefor, by combining a technical 1-butene-, 2-butene- and isobutene-containing C4 hydrocarbon stream together with a stream of pure isobutene and feeding them into the reaction zone in such a way that the steady-state concentration of the isobutene in the combined stream at the feed point of the combined stream into the reaction zone has an average value of at least 40% by weight, and a polymerization plant therefor.

公开(公告)号：US09963521B2

公开(公告)日：2018-05-08

申请号：US13765031

申请日：2013-02-12

Applicant: BASF SE

Inventor： Thomas Wettling ,  Stefan Hirsch ,  Markus Brym ,  Markus Weis ,  Rosa Corberan Roc ,  Klaus Muehlbach ,  Robert Haschick ,  Andreas Daiss ,  Marco-Christian Volland

IPC: C08F110/10 ,  C08F4/52 ,  C08F4/70

CPC classification number: C08F4/52 ,  C08F4/70 ,  C08F110/10 ,  C08F4/14 ,  C08F2/06 ,  C08F2/38 ,  C08F2500/01 ,  C08F2500/04

Abstract: Preparation of isobutene homopolymers having a weight-average molecular weight of 75 000 to 10 000 000 by polymerization of isobutene, by (a) performing the polymerization at −80° C. to −190° C., (b) using, as an inert solvent, optionally halogenated C1 to C5 hydrocarbons, (c) using, as a polymerization catalyst, a Lewis acid complex, (d) performing the polymerization in the presence of at least one reaction accelerator in the form of an ethylenically saturated hydrocarbon compound comprising one oxygen atom and no abstractable proton, and (e) performing the polymerization in the presence of at least one chain length regulator comprising one tertiary olefinic carbon atom.

公开(公告)号：US09688791B2

公开(公告)日：2017-06-27

申请号：US14905658

申请日：2014-07-07

Applicant: BASF SE

Inventor： Thomas Wettling ,  Stefan Hirsch ,  Markus Brym ,  Markus Weis

IPC: C08F110/10 ,  C08F210/10 ,  C08F8/00 ,  C08F8/28 ,  C08F8/30 ,  C08F8/32 ,  C08F8/46

CPC classification number: C08F110/10 ,  C08F8/00 ,  C08F8/28 ,  C08F8/30 ,  C08F8/32 ,  C08F8/46 ,  C08F210/10 ,  C08F2800/20 ,  C08F4/14 ,  C08F210/08 ,  C08F236/06 ,  C08F2500/02

Abstract: A polyisobutylene having a total content of vinylidene double bonds of more than 50 mol % and a number-average molecular weight of 500 to 10 000 daltons, where at least 10% of all the vinylidene double bonds in the polyisobutylene are part of one or more side chains composed of at least 2 carbon atoms from the main polyisobutylene chain. Such a polyisobutylene is suitable for production of fuel and lubricant additives.