Cassella Aktiengesellschaft

Hoechst Aktiengesellschaft

Celanese Chemicals Europe Gmbh

Dresser Industries, Inc.

Celanese Gmbh

Klaus Kuhlein

Friedrich Engelhardt

Dieter-Bernd Reuschling

Ulrich Buhler

Gerhard Beck

Uwe Dingerdissen

Alfred Hagemeyer

Andreas Manz

Hans-Jerg Kleiner

Andreas Winter

Walter Spaleck

Ulrich Riegel

Wolfgang Bauer

Frank Kuber

Hermann Uhr

Bernd Bachmann

Wilhelm Bartmann

Fritz Engelhardt

Susanne Grabley

Joachim Wink

Merten Schlingmann

Horst Tappe

Reinhold Keller

Karl-Heinz Keil

Gerhard Seibert

Adolf Heinz Linkies

Michael Aulbach

Walter Dursch

Hans Millauer

Christian Kohlpaintner

Kurt Roth

Axel Zeeck

Rudolf Kunstmann

Juliane Balzer

Josef Musil

Robert Klein

Rudolf Lowenfeld

Ulrich Greiner

Uwe Kosubek

Klaus Hutter

Maria Kallay

Jeffery C Dawson

Sigmar Von Halasz

Anthony R Reed

Roland Fischer

Bernward Scholkens

Ulrich Lerch

Rudi Beyerle

Gerhard Kretzschmar

Dieter Duwel

Peter Hammann

Gerhard Wohner

Rudiger Marquardt

Milos Babej

Gert Nagl

Sandra Bogdanovic

Johannes Becherer

Hermann Teufel

Ulrich Kussmaul

Theo Stahl

Manfred Wildt

Heinz Bender

Horst Kindler

Thomas Karcher

Hermann Schmitz

Peter Brungs

Gerhard Hess

Veit Buch

The invention relates to a method for producing a catalyst containing one or several metals from the group of metals comprising the sub-groups Ib and VIIIb of the periodic table on porous support particles, characterized by a first step in which one or several precursors from the group of compounds of metals from sub-groups Ib and VIIIb of the periodic table is or are applied to a porous support, and a second step in which the porous, preferably nanoporous support to which at least one precursor has been applied is treated with at least one reduction agent, to obtain the metal nanoparticles produced in situ in the pores of said support.

Process for producing catalysts comprising nanosize metal particles on a porous support, in particular for the gas-phase oxidation of ethylene and acetic acid to give vinyl acetate

Method for producing catalysts containing metal nanoparticles on a porous support, especially for gas phase oxidation of ethylene and acetic acid to form vinyl acetate

The invention relates to a method for producing aldehydes by reacting one olefine containing 3 to 12 carbon atoms with hydrogen and carbon monoxide in the presence of one rhodium catalyst. The invention is characterized in that (a) the rhodium catalyst is present in an aqueous phase, whereby the aqueous phase contains i) rhodium in an elemental or bonded form, ii) one trisulfonated triaryl phosphine, and iii) one crown etherl (b) the olefine is present in the reaction conditions in a liquid organic phase which cannot be mixed with the aqueous phase.

Method for producing aldehydes by hydroformylation in the presence of crown ether

Polybetaine-stabilized, palladium-containing nanoparticles, a process for preparing them and also catalysts prepared from them for producing vinyl acetate. The invention relates to soluble nanoparticles which comprise palladium alone or palladium together with metals of the groups 8-11 of the periodic table and which are embedded in protective colloids, wherein the protective colloids comprise at least one polymer having betaine groups, and to a process for preparing them. The soluble nanoparticles are suitable for the preparation of catalysts.

Polybetaine-stabilized, palladium-containing nanoparticles, a process

The invention relates to 2-alkylmercapto-4-(trifluoromethyl)benzoic esters of the formula (II), in which R.sup.1 and R.sup.2 are, independently of each other, (C.sub.1 -C.sub.6) alkyl, and a process for their preparation, which comprises reacting 3,4-dichlorobenzotrifluoride electrochemically at an anode with CO.sub.2 to give 2-chloro-4-(trifluoromethyl)-benzoate, converting it into the corresponding benzoic ester of the formula (I), and then reacting it with an alkylmercaptide R.sup.2 S.sup.e. ##STR1##

2-alkylmercapto-4-(trifluoromethyl)benzoic esters and a process for

The present invention relates to a metallocene compound of the formula I ##STR1## which can advantageously be used as catalyst component for olefin polymerization.

Olefin polymerization process by using a substituted indenyl containing

The invention relates to a metallocene compound of the formula I ##STR1## where the two indenyl ligands have substitution patterns different from one another. The metallocene compound can be used as catalyst component for olefin polymerization.

Metallocene compound

It is possible with the aid of various Streptomycetes species to prepare new compounds having a furan or lactone structure. These compounds have a pharmacological, especially antibiotic, action.

Process for the production of furans and lactones from streptomyces

New furans and lactones from streptomycetes, a process for the preparation thereof, and the use thereof. It is possible with the aid of various streptomycetes species to prepared new compounds having a furan or lactone structure. These compounds have a pharmacological, especially antibiotic, action.

Furans and lactones from sterptomycetes and the use thereof

The invention relates to elaiophylin derivatives of the formulae (I), (I'), (III) and (III') ##STR1## in which the C.dbd.C double bonds in the 2,3 and 4,5 position may also be hydrogenated and in which R.sup.1, R.sup.2, R.sup.3, R.sup.4 and X have the meanings indicated. The invention furthermore relates to a process for the preparation of these elaiophylin derivatives, and the use thereof as pharmaceuticals, in particular as anthelmintic pharmaceuticals.

Basic cleavage products of elaiophylin and elaiophylin derivatives and

Water-soluble copolymers containing a statistical distribution of 1-86% by weight of structural units of the formula ##STR1## 9-80% by weight of units of the formula ##STR2## 5-90% by weight of units of the formula ##STR3## and up to a total of 30% by weight of one or more units of the formulae ##STR4## wherein R.sup.1 is alkyl having 1 to 4 carbon atoms;

Water-soluble copolymers with pendant phosphonic, sulphonic and amide

Crosslinked copolymers wherein crosslinking is effected with crosslinking bridge members of the formula ##STR1## wherein R.sup.1 and R.sup.2 independently of one another are each hydrogen or alkyl with 1 to 4 carbon atoms and m represents a number from 0 to 6 are prepared by copolymerization of monomers with vinylphosphonic acid (ester)-anhydrides and the new crosslinked polymers according to the invention are suitable for the preparation of acid-soluble coatings and encapsulation materials.

Phosphonic acid cross-linked hydrophilic copolymers

The crosslinked, porous copolymer in the form of beads and containing 50 to 99.9% by weight of recurring units of a heterocyclic 5-membered ring compound which contains a polymerizable olefinic group and which has at least one protonizable nitrogen atom in the ring, 0.1 to 50% by weight of units of a crosslinking agent, 0 to 25% by weight of units of a polymerizable organoboron or organosilicon compound and, relative to 100% by weight of the sum of the abovementioned units, 5 to 350% by weight of units of an N-vinylamide of the general formula I CH.sub.2 .dbd.CH--N(R.sup.1)--C(R.sup.2).dbd.O wherein R.sup.1 denotes hydrogen, methyl or ethyl and R.sup.2 denotes hydrogen or C.sub.1 -C.sub.3 -alkyl, or several such N-vinylamides and 0 to 40% by weight of units of another polymerizable compound or several such compounds, is prepared by inverted suspension polymerization and is used, for example, as a sorbent for acid substances from solutions thereof, preferably aqueous solutions.

Copolymer, process for its preparation and its use as a sorbent

The crosslinked copolymer containing 75 to 99.9% by weight of recurring units of a pyridyl, quinolyl, isoquinolyl or pyrazinyl compound containing a polymerizable olefinic group, 0.1 to 25% by weight of units of a crosslinking agent and 0 to 25% by a weight of units of a polymerizable organosilicon and/or organoboron compound and, based on 100% by weight of the sum of the abovementioned units, 5 to 350% by weight of units of an N-vinyl-amide, is prepared by bead polymerization and used as a sorbent for acid substances from their aqueous solutions.

Copolymer, a process for its preparation and its use as a sorbent

Monoazo dyestuffs, free of carboxylic acid moieties or sulphonic acid moieties, of the formula ##STR1## wherein A and A' independently of one another are linear or branched alkylene having 2 to 6 carbon atoms;

Water-insoluble monoazo dyestuffs, their preparation and their use

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Kelkheim, Germany

Klaus Kuhlein