Basf Aktiengesellschaft

Badische Anilin- & Soda-fabrik Aktiengesellschaft

Basa Aktiengesellschaft

Klaus Bronstert

Dietmar Bender

Konrad Knoll

Adolf Echte

Daniel Wagner

Peter Klaerner

Helmut Mach

Gerhard Staiger

Volker Ladenberger

Hans Peter Rath

Hans-Michael Walter

Martin Fischer

Hans-Henning Vogel

Wolfgang F Mueller

Hans-Dieter Schwaben

Erhard Seiler

Walter Himmele

Kaspar Bott

Gerhard Fahrbach

Karl Gerberding

Hans Hoenl

Helmut Jenne

Waldhelm Hochstein

Friedrich Hovemann

Siegbert Bohnet

Wolfgang Groh

Rainer Becker

Hermann Gausepohl

Gerhard Hoffmann

Juergen Hambrecht

Franz Brandstetter

Heinz Mueller-Tamm

Rolf Wurmb

Klaus Boehlke

Christof Taubitz

Rainer Theysohn

Walter Ziegler

Wolfgang Druschke

Peter Richter

Peter Hennenberger

Ehrenfried Baumgartner

Petr Simak

Horst Schuch

Gerhard Sandrock

Johann Nickl

Hans Mittnacht

Bertram Ostermayer

Hans-Joachim Krause

Helmut Mueller

Gregor Schuermann

Paul Boerzel

Heinrich Mohr

Wolfgang F Muller

Erich Haedicke

Werner Schmitt

Hans Georg Dorst

Hans-Georg Trieschmann

Juergen Pohrt

Hannes Schick

Guenther Nottes

Manfred Lieb

Baerbel Arnold-Mauer

Eduard Krahe

Herbert Willersinn

Ernst-Guenther Kastning

Dietrich-Wolfgang Mueller

Hansjoerg Adler

Telechelics containing ethanolamine or oligoether-ol-amine end groups

Telecheles are prepared by reacting, preferably, polyfunctional, living polymers obtained by anionic polymerization with a functionalizing agent by a process in which the reaction is carried out while stirring with a stirrer having knife-like blades as stirring elements, the latter being inclined relative to their plane of movement and passing over essentially the complete space occupied by the reaction mixture.

Preparation of telechelic structures

Polymers Ia and Ib carrying functional groups and obtainable by

Polymers based on conjugated dienes

Hydrocarbons and polymers thereof, of the structure (I)

Polyisobutylene hydrocarbon or polymer containing a double bond allylic

A process for preparing bifunctional living polymers which are able to forth bifunctional telechelic polymers or block copolymers with at least 3 blocks of conjugated dienes and/or vinylaromatics with molecular weights of from 1,500 to 500,000, by bifunctional initiators whose anionic centers are aliphatic carbon atoms which are substituted by lithium and an aliphatic hydrocarbon radical as well as by either 2 aryl radicals or by one aryl radical and one hydrogen radical, where one of the aryl radicals can also be part of the two anionic centers, in a first stage being reacted in the presence of not more than 2.5 moles of an aliphatic ether or a tertiary amine per mole of lithium and not less than 2 mol/l of a conjugated diene at from -40.degree. to +35.degree. C. with not less than two moles of diene, resulting in the formation of low molecular weight diene oligomers which in turn act as bifunctional initiators, and using the latter in a second reaction stage in a conventional manner at above 40.degree. C., with or without the addition of other monomers, to obtain polymers of the required molecular weight.

Living polymers, the preparation thereof and the use thereof for

The novel alkadiene/vinyl-aromatic copolymers which contain side groups and have a random, block-like or star-like structure and whose polymerized alkadiene comonomer units are partially or completely selectively hydrogenated, and which contain one or more side groups having one or more radicals capable of (4+2) cycloaddition (Diels-Alder reaction) with dienophiles are suitable as such as viscosity index (VI) improvers or can be used for the preparation of dispersant VI improvers. For this purpose, they are reacted with one or more dienophiles which are capable of a Diels-Alder (4+2) cycloaddition reaction and preferably contain strongly polar functional groups. The resulting selectively hydrogenated alkadiene/vinylaromatic copolymers having one or more side groups which constitute a (4+2) cycloadduct or a Diels-Alder adduct can be modified in their performance characteristics by further reaction with ammonia, an organic amine, an alkylene oxide, a polyalkylene oxide and/or a condensate of ammonia and/or an organic amine with an alkylene oxide.

Alkadiene/vinylaromatic copolymers containing side groups, and their use

A copolymer with stellate branching, of the general formula [A-].sub.k X, where A is the monovalent radical of a homopolymer, block copolymer or random copolymer of a conjugated diene and/or vinyl-aromatic hydrocarbon, k is a number from 1 to 10, and X is the k-valent radical of a coupling center produced by coupling with hexatriene, and the product of the hydrogenation thereof are described.

Branched copolymers

Preparation of hydrocarbons and polymers with allylic chloride end

Thermoplastic molding materials based on polyesters and polyphenylene

An organic compound of an alkali metal, of the formula I ##STR1## which is obtained by reaction of an appropriate diarylethylene of the formula II with an alkali metal (M), especially lithium, ##STR2## where Ar.sup.1 and Ar.sup.2 are identical or different aryl or hetaryl radicals which have one or more rings which are either separate or fused, and where R is at least one substituent different from hydrogen and which is chemically inert to the alkali metal or its alkyl, with the proviso that the total of the carbon atoms in all the R is at least 3, and m and n are each an integer up to 4, is used for the preparation of polymers whose monomers are amenable to anionic polymerization.

Anionic polymerization with bifunctional initiators

Polymers having terminal halogen atoms and consisting of cationically polymerizable, olefinically unsaturated monomers are obtainable by polymerization using an initiator system comprising a halogen-containing Lewis acid and a 3-membered to 8-membered cyclic ether.

Polymers having terminal halogen atoms

A process for the preparation of polymers of isobutene having tertiary chloride groups by reaction of appropriate polymers which have been prepared by cationic polymerization of isobutene with hydrogen chloride.

Preparation of polymers having tertiary chloride end groups

Impact modified thermoplastic blends of components A, B and optionally C, consisting of:

Thermoplastics of polyalkylene terephthalates impact modified with

Stilbene compounds of the general formula Ia, Ib or Ic

Stilbene compounds use in anionic polymerization

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Carlsberg, Germany

Klaus Bronstert