Basf Aktiengesellschaft

Basf Se Corporation

Hans-Michael Walter

Klaus Bronstert

Helmut Mach

Hans Peter Rath

Konrad Knoll

Hermann Gausepohl

Philippe Desbois

Markus Schubert

Thomas Wettling

Michael Röper

Till Gerlach

Daniel Wagner

Michael Ishaque

Rainer Papp

Peter Klaerner

Dietmar Bender

Marcus Sigl

Matthias Kiefer

Frank Poplow

Hans-Dieter Schwaben

Horst Schuch

Phillip Hanefeld

Odile Fichet

Uwe Blumenstein

Jürgen Stephan

Mirjam Herrlich-Loos

Friederike Osswald

Juergen Pohrt

Dominique Teyssie

Benjamin Davion

Fritz Elmar Kuehn

Klaus MÜHLBACH

Volker Böhm

Yanmei Zhang

Radha Krishnan Narayanan

The present invention relates to mixtures comprising linear block copolymers made from vinylaromatic monomers and from dienes of the structure (I) S-B-Sand (II) S-B-S, where Sis a block made from vinylaromatic monomers with number-average molar mass Min the range from 40,000 to 100,000 g/mol, each of S, Sand Sis a block made from vinylaromatic monomers with number-average molar mass Min the range from 5,000 to 20,000 g/mol, each of Band Bis a block made from dienes or a copolymer block made from dienes and from vinylaromatic monomers with numberaverage molar mass Min the range from 15,000 to 40,000 g/mol, and the ratio of the block copolymers (I)/(II) is in the range from 0.6 to 2.

Transparent styrol-butadiene block copolymer mixtures

A thermoplastic molding material contains, based on the sum of A and B,

Thermoplatic molding materials

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

A transparent thermoplastic molding material contains, based on A+B,

Transparent thermoplastic molding material, its preparation and its use

Homo- or copolymers which have terminal mercapto groups, are composed of one or more monomers from the group consisting of butadiene, isoprene and styrene and are obtained by anionic polymerization of one or more of the stated monomers in the presence of one or more organolithium compounds followed by reaction (of the living anions) with an episulfide of the general formula I ##STR1## where R is hydrogen, alkyl of 1 to 18 carbon atoms or aryl of 6 to 10 carbon atoms, with the formation of one or more primary or secondary mercapto groups at the end of the polymer chain(s) are prepared by a process in which a thiolcarboxylic acid of the general formula II ##STR2## where R.sup.1 is hydrogen, alkyl of 1 to 10 carbon atoms or --CH.sub.2 --COOH and R.sup.2 is 0 or from 1 to 10 CH.sub.2 units, is added directly to the resulting reaction mixture in an amount of from 0.5 to 2 moles of the thiolcarboxylic acid per mole of episulfide, and the reaction product is subjected to an aftertreatment

Preparation of homo- and copolymers having terminal mercapto groups and

Decene oligomers useful with or without hydrogenation as basis for synthetic lubricating oils are prepared by oligomerizing decene-1 in the presence of an alkylaluminum chloride catalyst and an alkyl halide cocatalyst, in a first reaction stage the decene-1 being mixed with the catalyst at from 0 to +25.degree. C. and being kept in contact therewith within the same temperature range for not less than 15 minutes and in a second reaction stage the cocatalyst being added at from 0 to +35.degree. C. in the course of a period of from 15 to 180 minutes.

Preparation of decene oligomers and use thereof as lubricating oils

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Freinsheim, Germany

Hans-Michael Walter