Basf Aktiengesellschaft

Basf Se Corporation

Basf Aktiensegellschaft

Basf Schweiz Ag

Thomas Wettling

Jochem Henkelmann

Klaus Muehlbach

Rosa Corberan Roc

Dirk Borchers

Stefan Hirsch

Michael Keil

Hans Peter Rath

Heinz Isak

Markus Brym

Bernd Wolf

Helmut Mach

Boris Breitscheidel

Ludwig Schuster

Thomas Ruhl

Irene Troetsch-Schaller

Reinhard Doetzer

Hannah Maria Koenig

Hermann Koehler

Ekkehard Schwab

Herbert Bayer

Horst Wingert

Leopold Hupfer

Markus Schubert

Andreas Daiss

Heinz Auer

Dietmar Posselt

Andreas Henne

Harald Schwahn

Wolfgang Loth

Rainer Papp

Claudius Kormann

Wolfgang Franzischka

Darijo Mijolovic

Martin Karches

Marcus Sigl

Matthias Kiefer

Volker Seidl

Frank Poplow

Sergei Victorovich Kostjuk

Irina Vasilenko

Dmitryi Shiman

Markus Weis

Heinz Rutter

Thomas-Michael Kahl

Werner Bochnitschek

Wolfgang Mattmann

Phillip Hanefeld

Helmut Schmidtke

Marco Bergemann

Dieter Stuetzer

Franz Weber

Hans-Michael Walter

Hannah Maria König

Wim Verrelst

Uwe Rachwalsky

Marco-Christian Volland

Herbert Mayr

Bernd Hupfeld

Klaus Diehl

Ulrich Eichenauer

Christian Drohmann

Robert Haschick

Manfred Dimmler

Mirjam Herrlich-Loos

Jürgen Stephan

Elke Guetlich-Hauk

Rainer Urban

Erich K Fehr

Anne Berg

Jochem Henklemann

Ivan Berazianka

Carolin Nadine Duecker

Alexandra Wiedemann

Klaus Muhlbach

Klaus MÜHLBACH

Marco/BASF Japan Inc Bergemann

The present invention relates to a novel process for preparing high-reactivity isobutene homo- or copolymers with a content of terminal vinylidene double bonds per polyisobutene chain end of at least 80 mol %. The present invention further relates to novel isobutene polymers.

Process for preparing high-reactivity isobutene homo- or copolymers

The present invention relates to a novel process for preparing high-reactivity isobutene homo- or copolymers with a content of terminal vinylidene double bonds per polyisobutene chain end of at least 70 mol %. The present invention further relates to novel isobutene polymers.

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 Chydrocarbon 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.

Process for continuously preparing polyisobutylene

The present invention relates to a process for preparing high-reactivity isobutene homo- or copolymers with a content of terminal vinylidene double bonds per polyisobutene chain end of at least 70 mol %, which comprises polymerizing isobutene or an isobutene-comprising monomer mixture in the presence of an aluminum trihalide-donor complex effective as a polymerization catalyst or an alkylaluminum halide-donor complex effective as a polymerization catalyst, wherein the aluminum trihalide or alkylaluminum halide is treated with at least one inorganic hydrate.

The present invention relates to a process for preparing high-reactivity isobutene homo- or copolymers with a content of terminal vinylidene double bonds per homo- or copolymer chain end of at least 70 mol % which comprises polymerizing isobutene or an isobutene-comprising monomer mixture in the presence of an aluminum trihalide-donor complex effective as a polymerization catalyst or of an alkylaluminum halide-donor complex, said complex comprising, as the donor, a mixture of at least two organic compounds with at least one ether function each.

Preparation of isobutene homopolymers having a weight-average molecular weight of 75 000 to 10 000 000 by polymerization of isobutene, by

Process for preparing higher molecular weight polyisobutylene

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.

High-reactivity polyisobutylene having a high content of vinylidene double bonds in the side chains

Preparation of isobutene homopolymers or copolymers having a number average molecular weight of from 500 to 5 000 000 by polymerization of isobutene or an isobutene-comprising monomer mixture in the presence of a Lewis acid or a complex comprising a Lewis acid as polymerization catalyst, wherein the polymerization is carried out in the presence of at least one hemiacetal or full acetal which can be obtained by protic acid-catalyzed reaction of at least one C-C-hydrocarbyl alcohol with at least one aldehyde or ketone having from 1 to 12 carbon atoms.

Process for preparing isobutene homopolymers or copolymers

The present invention relates to a process and to an apparatus for continuous living polymerization of cationically polymerizable monomers, in which at least three feedstocks are mixed in one or more mixers with microstructures and then polymerized in at least one reaction zone.

Process and apparatus for continuously polymerizing cationically polymerizable monomers

A catalyst complex composed of boron trifluoride and a cocatalyst mixture of 10 to 90% by weight of a monohydric primary C- to C-alcohol and 90 to 10% by weight of a monohydric secondary C- to C-alcohol, where the molar ratio of boron trifluoride to the sum of all alcohols is 2:1 to 1:10. This catalyst complex is used in the preparation of high-reactivity isobutene homopolymers having a number-average molecular weight of 300 to 50 000, using, as the feedstock, a Chydrocarbon mixture comprising at least 20% by weight of isobutene and a total of at least 10% by weight of other Colefins.

Boron trifluoride-catalyst complex and process for preparing high-reactivity isobutene homopolymers

Preparation of high-reactivity isobutene homo- or copolymers with a content of terminal vinylidene double bonds per polyisobutene chain end of at least 50 mol % by polymerization of isobutene or isobutene-comprising monomer mixtures in the presence of Lewis acids suitable as polymerization catalysts or of complexes which are effective as polymerization catalysts and are formed from Lewis acids and donors, and in the presence of initiators, wherein the initiators used are organic sulfonic acids Z&#x2014;SOH in which the variable Z denotes an alkyl radical, haloalkyl radical, cycloalkyl radical, aryl radical or arylalkyl radical.

The invention relates to a method for producing mainly ethylenically unsaturated isobutene polymers, wherein the sum of proportions of molecules with a double bond in an &#x3b1; position and molecules with a double bond in a position &#x3b2; is increased to 75% mol by polymerising isobutene in a liquid phase in the presence of a diluted or dispersed catalyst complex which comprises (i) an electron donor and (ii) a compound of general formula (I) HMe[MF], wherein Me is a metal with oxidation state m, M is an element selected from elements of the groups 2, 3, 4, 5, 10, 11, 13, 14 or 15 of the periodic table according to the IUPAC notation of an element oxidation number n, a is an integer &#x2267;1, b is an integer &#x2267;0, x is an integer &#x2267;2 and c is [(a+mb)/(x&#x2212;n)]. The catalyst is preferably embodied in the form of HBFO(CH). The inventive method makes it possible to obtain an isobutene polymer having a low fluorine-content even using technical Chydrocarbon portions as an isobutene source.

Isobutene polymerisation in the presence of a donor and fluorinated acids complex

The present invention relates to polyalkene amine formulations comprising at least one polyalkene amine in a solvent, having improved performance properties, especially improved low temperature properties; a process for preparing such formulations and the use of these formulations in fuel and lubricant compositions, in particular fuels, for improving the intake system-cleaning action of such fuels.

Polyalkene amines with improved applicational properties

The invention relates to a process for preparing polyisobutene having a mean molecular weight Mof from 400 to 50 000, in particular from 500 to 10 000, by polymerizing isobutene in the presence of a BF-containing complex catalyst, wherein the polymerization is carried out at least temporarily in the presence of one or more cyclic ethers.

Method for producing a polyisobutene

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Limburgerhof, Germany

Thomas Wettling