Basf Se Corporation

Basf Aktiengesellschaft

Clariant International Ltd

Clariant S.a

Clariant (chile) Ltda.

Clariant Ltda.

Gunter Lipowsky

Klaus Joachim Mueller-Engel

Sylke Haremza

Volker Schliephake

Uwe Meisenburg

Klaus Joachim Müller-Engel

Maximilian Dochnahl

Steffen Rissel

Peter Zurowski

Jacques Collin Bezuidenhout

Dietmar Haering

Frank Hoefer

Ulrich Jaeger

Klaus-Ulrich Pedain

Alexander Korte

Carsten Groening

Antonio Pedro De Oliveira Filho

Jesús Pitarch López

Rainer Noack

Wagner Claudio Da Silva

Joachim Wulff-Doering

Ulrich Jäger

Mathieu Chabanas

Carsten Gröning

Clemens Palm

Jonathan O Smith

Willi Bieche

Frank Höfer

Mark Alan Kearns

Franco Aurelio Constanzo Yanez

Rodrigo Alexis Caris Andrade

Jaime Osvaldo Gomez Becerra

Jesus Pitarch López

Juergen Strasser

Dietmar Häring

Jesus Pitrach Lopez

This invention relates to a collector composition for the direct froth flotation of nonsulfide ores comprising 

Composition of fatty acids and N-acyl derivatives of sarcosine for the improved flotation of nonsulfide minerals

The instant invention relates to a composition in form of a stable aqueous emulsion comprising 

Stable aqueous composition of neutral collectors and their use in mineral beneficiation processes

The present invention to a process for preparing 1-phenylpyrazoles of the formula I in which each Ris independently selected from chlorine, fluorine, alkyl, haloalkyl, alkoxy and haloalkoxy; n is 1, 2 or 3; each Ris independently selected from cyano, nitro, halogen, alkyl, haloalkyl, alkoxy, haloalkoxy, alkylthio and alkoxycarbonyl; m is 0, 1 or 2; A is alkyl, aryl or aryl-C-C-alkyl, where A optionally bears 1, 2, 3 or 4 substituentscomprising reacting a phenyl halide of the formula (II) with a pyrazole derivative of the formula (III) in whichX is chlorine, iodine or bromine; andR, n, R, m and A are each as defined above,in the presence of a base and a catalytic system comprising a ligand and a metal compound selected from palladium compounds, iron compounds and copper compounds.

Process for preparing 1-phenylpyrazoles

The present invention relates to a method for producing 1-hydroxymethyl-1,2-diphenyloxiranes from 2,3-diphenylpropenals by means of epoxidation and reduction. The formation of objectionable by-products can be suppressed in that the reduction is started before the 2,3-5 diphenylpropenal is completely converted. The hydroxymethyl diphenyloxiranes represent valuable intermediate products for producing 1-azolylmethyl-1,2-diphenyloxiranes, wherein the latter can be easily produced from said intermediate products by introducing the azolyl group.

Method for producing hydroxymethyl diphenyloxiranes and corresponding 1-azolylmethyl-1,2-diphenyloxiranes

The present invention relates to a process for producing 2-halogenomethylphenyl acetic acid derivatives.

Method for producing 2-halogenomethylphenyl acetic acid derivatives

A process for inhibiting polymerization of (meth)acrylic acid and/or (meth)acrylic esters by introducing an oxygenous gas into the (meth)acrylic acid and/or the (meth)acrylic ester, in which the (meth)acrylic acid and/or the (meth)acrylic ester has a degree of purity of at least 95% and is in the liquid state.

Process for inhibiting polymerization of (meth)acrylic acid and/or (meth)acrylic esters

The present invention to a process for preparing 1-phenylpyrazoles of the formula I in which each Ris independently selected from chlorine, fluorine, alkyl, haloalkyl, alkoxy and haloalkoxy; n is 1, 2 or 3; each Ris independently selected from cyano, nitro, halogen, alkyl, haloalkyl, alkoxy, haloalkoxy, alkylthio and alkoxycarbonyl; m is 0, 1 or 2; A is alkyl, aryl or aryl-C-C-alkyl, where A optionally bears 1, 2, 3 or 4 substituents comprising reacting a phenyl halide of the formula (II) with apyrazole derivative of the formula (III) in which X is chlorine, iodine or bromine; and R, n, R, m and A are each as defined above, in the presence of a base and a catalytic system comprising a ligand and a metal compound selected from palladium compounds, iron compounds and copper compounds. 

A process for preparing (meth)acrylic esters (F) of alcohols (A) having at least one epoxy group, in which at least one alcohol (A) having at least one epoxy group is esterified with (meth)acrylic acid (S) or is transesterified with at least one (meth)acrylic ester (D) in the presence of at least one enzyme, the alcoholic leaving group being stable under the reaction conditions in the case of the transesterification.

Process for producing of epoxy-containing (meth)acrylic esters, using lipases

The present invention relates to a process for preparing tertiary alkyl esters of (meth)acrylic acid having at least 4 carbon atoms in the alkyl radical. The process includes reacting (meth)acrylic acid with at least one olefin of formula (I) in homogeneous phase in the presence of an acidic catalyst in a reactor, discharging the resulting reaction mixture from the reactor, separating the discharged reaction mixture into a first mixture which contains the catalyst and a second mixture which contains the tertiary alkyl ester of (meth)acrylic acid having at least 4 carbon atoms in the alkyl radical, and removing the tertiary alkyl ester of (meth)acrylic acid having at least 4 carbon atoms in the alkyl radical from the second mixture in the presence of compound S, which comprises at least one N-oxyl group and is added as a stabilizer.

Process for preparing tertiary alkyl esters of (meth)acrylic acid having at least 4 carbon atoms in the alkyl radical

A process for transferring heat to a liquid mixture comprising at least one (meth)acrylic monomer in an indirect heat exchanger, wherein a quaternary ammonium salt, a tertiary amine or a salt thereof with a Br&#xf8;nsted acid is added to the liquid mixture to reduce fouling.

Process for transferring heat to a liquid mixture comprising at least one (meth)acrylic monomer

A process for rectificatively separating a liquid which comprises acrylic acid, methacrylic acid or a mixture thereof, and additionally comprises low molecular weight aldehydes and acetone.

Process for rectificatively separating a liquid comprising acrylic acid and/or methacrylic acid

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Ladenburg, Germany

Gunter Lipowsky