Basf Aktiengesellschaft

Paul Naegele

Konrad Knoll

Hermann Gausepohl

Karl Seib

Norbert Niessner

Wolfgang Fischer

Ferdinand Straub

Heinrich Hartmann

Jochem Henkelmann

Knut Oppenlaender

Boris Breitscheidel

Andreas Henne

Udo Hoppe

Sabine Weiguny

Josef W&uuml;nsch

J&uuml;rgen Koch

Roland Martin

Thomas R&uuml;hl

Rolf Lebk&uuml;cher

Hubert Trauth

Hans-Juergen Raubenheimer

Norbert Guntherberg

Wolfgang Loth

Hans-Helmut Goertz

Kurt Schneider

Dietmar Bender

Friedrich Vogel

Franz Frosch

Rainer Strickler

Frank Thoemel

Jürgen Koch

Adolph Segnitz

Jurgen Pohrt

Herrmann Gausepohl

Josef Richard Wünsch

A process for the preparation of linear polymers or block copolymers of styrene by anionic polymerization comprises carrying out the chain termination with an n-alkyl glycidyl ether or a dialkyl ketone.

Method for breaking a chain during anionic polymerisation

Block copolymers comprise at least two hard blocks S and S made from vinylaromatic monomers and, between these, at least one random soft block B/S made from vinylaromatic monomers and from dienes, where the proportion of the hard blocks is above 40% by weight, based on the total block copolymer.

Transparent, impact-resistant polystyrene on a styrene-butadiene block copolymer basis

Block copolymers comprise at least two hard blocks S and S made from vinyl aromatic monomers and, between these, at least ore random soft block B/S made from vinyl aromatic monomers and from dienes, where the proportion of the hard blocks is above 40% by weight, based on the total block copolymer, wherein the 1,2-vinyl content in the soft block B/S is less than 20%.

Glass-clear impact-modified polystyrene based on styrene-butadiene block copolymers

A process for the reaction of an organic compound in the presence of a catalyst comprising, as active metal, ruthenium alone or together with at least one Group Ib, VIIb, or VIIIb metal in an amount of from 0.01 to 30 wt %, based on the total weight of the catalyst, applied to a support, wherein from 10 to 50% of the pore volume of the support comprises macropores having a pore diameter in the range of from 50 nm to 10,000 nm and from 50 to 90% of the pore volume of the support comprises mesopores having a pore diameter in the range of from 2 to 50 nm, the sum of said pore volumes being 100%, and said catalyst as such.

Process for reacting an organic compound in the presence of a supported ruthenium catalyst

Elastomeric block copolymers comprising at least one hard block A composed of styrene monomers and at least one elastomeric block (B/A) composed of styrene monomers and dienes, the glass transition temperature T,of the block A being more than 25&deg; C. and that of block (B/A) being less than 25&deg; C. and the phase volume ratio of block A to block (B/A) being chosen so that the proportion of the hard phase in the total block copolymer is from 1 to 40% by volume and the amount by weight of the diene is less than 50% by weight, and the relative proportion of 1,2 linkages of the polydiene, based on the sum of 1,2- and 1,4-cis/trans linkages, being below 15%, are prepared by anionic polymerization by means of a lithium alkyl in a nonpolar solvent in the presence of a soluble potassium salt and are used for the production of shaped articles.

Thermoplastic elastomeric block copolymers

Thermoplastic elastomer

.alpha.tocopherol-stabilized styrene/butadiene block copolymers

Copolymers of monoalkyl maleates and vinyl alkyl ethers are prepared by free radical copolymerization of maleic anhydride and a vinyl alkyl ether followed by reaction with an alkanol, by a process in which the vinyl alkyl ether component is present in excess in the reaction mixture in each phase of the polymerization, the free radical copolymerization is carried out in acetone and the acetone is removed by distillation during or after ester formation at up to 70.degree. C.

Preparation of copolymers of monoalkyl maleates and vinyl alkyl ethers

Dicyclohexylalkanes, their preparation, cosmetic and pharmaceutical formulations containing these compounds, and their use in these formulations as oil components for cosmetic and pharmaceutical purposes.

Dicyclohexylalkanes, their preparation, cosmetic and pharmaceutical

Compounds of the formula I ##STR1## where the individual radicals R are identical or different and are each hydrogen, an alkali metal, or ammonium which is unsubstituted or substituted by organic radicals, or are each C.sub.1 -C.sub.20 -alkyl or a polyoxyethylene radical which contains from 1 to 10 ethylene oxide units and whose terminal OH group may be etherified by an alcohol of 1 to 3 carbon atoms, are used as sun screen agents.

s-Triazine derivatives and their use as sun screen agents

##STR1## where the individual radicals R are identical or different and are each hydrogen, an alkali metal, or ammonium which is unsubstituted or substituted by organic radicals, or are each C.sub.1 -C.sub.20 -alkyl or a polyoxyethylene radical which contains from 1 to 10 ethylene oxide units and whose terminal OH group may be etherified by an alcohol of 1 to 3 carbon atoms, are used as sun screen agents.

S-triazine derivatives

Cosmetic preparations are prepared containing from 0.1 percent to 15 percent by weight of oxyethylated diphenylamines as sun screen agents.

Cosmetic formulations containing oxyethylated diphenylamines as sun

A process for the preparation of high-viscosity polyvinylpyrrolidone, wherein an aqueous polyvinylpyrrolidone solution is subjected to a heat treatment in the presence of a water-insoluble peroxide and in the absence of oxygen, and thickeners containing the polyvinylpyrrolidone thus prepared.

Preparation of a polyvinylpyrrolidone by heat treatment of an aqueous

Compounds of the formula I ##STR1## where R is a polyethylene glycol radical of 3 to 60 chain members or a polypropylene glycol radical of 3 to 60 chain members or the radical of an ethylene oxide/propylene oxide block polymer of average molecular weight from 300 to 8,500, and R' is straight-chain or branched alkyl of 1 to 10 carbon atoms, or benzyl.

Polyalkoxycarbinol cinnamates and protective sun agents containing these

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Otterstadt, Germany

Paul Naegele