Patents by Inventor Gunter Lipowsky
Gunter Lipowsky has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 10195614Abstract: This invention relates to a collector composition for the direct froth flotation of nonsulfide ores comprising a) 50-99 wt.-% of a mixture of fatty acids and b) 1-50 wt.-% of an N-acyl derivative of sarcosine of the formula (I) wherein R is a saturated or unsaturated hydrocarbon chain with 7 to 21 carbon atoms, wherein the mixture of comprises 10.0-35.0 wt.-% of fatty acid having a saturated C11 hydrocarbon group, 2.5-15.0 wt.-% of fatty acid having a saturated C13 hydrocarbon group, 10.0-25.0 wt.-% fatty acid having a monounsaturated C17 hydrocarbon group and 20.0-45.0 wt.-% fatty acid having a bisunsaturated C17 hydrocarbon group.Type: GrantFiled: March 1, 2016Date of Patent: February 5, 2019Assignee: Clariant International Ltd.Inventors: Klaus-Ulrich Pedain, Jesús Pitarch López, Gunter Lipowsky, Jacques Collin Bezuidenhout
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Patent number: 10105713Abstract: The instant invention relates to a composition in form of a stable aqueous emulsion comprising a) 1-50 wt.-% of at least one water insoluble thionocarbamate collector selected from the group consisting of dialkyl thionocarbamates, alkyl alkoxycarbonyl thionocarbamates and alkyl allyl thionocarbamates, b) 1-50 wt.-% of one or a mixture of surface active agents of the general formula wherein R1 is a saturated or unsaturated, branched or linear C3 to C30 aliphatic or aromatic hydrocarbon group, R2 and R3 are independently from each other hydrogen or a C1 to C4 alkyl group, R4 is hydrogen or —CH2—COOX where X is hydrogen or sodium salt or potassium salt or ammonium salt, and n and m are independently from each other 0 to 50, c) 0.1-20 wt.-% of a mixture of at least one alcohol and at least one ether and/or ester, e) 1-90 wt.-% of water.Type: GrantFiled: April 22, 2015Date of Patent: October 23, 2018Assignees: CLARIANT INTERNATIONAL LTD., CLARIANT S.A, CLARIANT (CHILE) LTDA.Inventors: Antonio Pedro De Oliveira Filho, Jesus Pitarch López, Wagner Claudio Da Silva, Gunter Lipowsky, Jacques Collin Bezuidenhout, Jaime Osvaldo Gomez Becerra, Rodrigo Alexis Caris Andrade, Franco Aurelio Constanzo Yanez
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Publication number: 20180104701Abstract: This invention relates to a collector composition for the direct froth flotation of nonsulfide ores comprising a) 50-99 wt.-% of a mixture of fatty acids and b) 1-50 wt.-% of an N-acyl derivative of sarcosine of the formula (I) wherein R is a saturated or unsaturated hydrocarbon chain with 7 to 21 carbon atoms, wherein the mixture of comprises 10.0-35.0 wt.-% of fatty acid having a saturated C11 hydrocarbon group, 2.5-15.0 wt.-% of fatty acid having a saturated C13 hydrocarbon group, 10.0-25.0 wt.-% fatty acid having a monounsaturated C17 hydrocarbon group and 20.0-45.0 wt.-% fatty acid having a bisunsaturated C17 hydrocarbon group.Type: ApplicationFiled: March 1, 2016Publication date: April 19, 2018Applicant: Clariant International Ltd.Inventors: Klaus-Ulrich PEDAIN, Jesús PITARCH LÓPEZ, Gunter LIPOWSKY, Jacques Collin BEZUIDENHOUT
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Publication number: 20170165681Abstract: The instant invention relates to a composition in form of a stable aqueous emulsion comprising a) 1-50 wt.-% of at least one water insoluble thionocarbamate collector selected from the group consisting of dialkyl thionocarbamates, alkyl alkoxycarbonyl thionocarbamates and alkyl allyl thionocarbamates, b) 1-50 wt.-% of one or a mixture of surface active agents of the general formula wherein R1 is a saturated or unsaturated, branched or linear C3 to C30 aliphatic or aromatic hydrocarbon group, R2 and R3 are independently from each other hydrogen or a C1 to C4 alkyl group, R4 is hydrogen or —CH2—COOX where X is hydrogen or sodium salt or potassium salt or ammonium salt, and n and m are independently from each other 0 to 50, c) 0.1-20 wt.-% of a mixture of at least one alcohol and at least one ether and/or ester, e) 1-90 wt.-% of water.Type: ApplicationFiled: April 22, 2015Publication date: June 15, 2017Applicants: Clariant International Ltd., Clariant S.A., Clariant (Chile) Ltda.Inventors: Antonio Pedro DE OLIVEIRA FILHO, Jesus PITARCH LÓPEZ, Wagner Claudio DA SILVA, Gunter LIPOWSKY, Jacques Collin BEZUIDENHOUT, Jaime Osvaldo Gomez Becerra, Rodrigo Alexis Caris Andrade, Franco Aurelio Constanzo Yanez
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Patent number: 8933246Abstract: The present invention to a process for preparing 1-phenylpyrazoles of the formula I in which each R1 is independently selected from chlorine, fluorine, alkyl, haloalkyl, alkoxy and haloalkoxy; n is 1, 2 or 3; each R2 is 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-C1-C4-alkyl, where A optionally bears 1, 2, 3 or 4 substituents comprising reacting a phenyl halide of the formula (II) with a pyrazole derivative of the formula (III) in which X is chlorine, iodine or bromine; and R1, n, R2, 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.Type: GrantFiled: January 10, 2013Date of Patent: January 13, 2015Assignee: BASF SEInventors: Maximilian Dochnahl, Gunter Lipowsky
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Patent number: 8604071Abstract: 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.Type: GrantFiled: February 4, 2010Date of Patent: December 10, 2013Assignee: BASF SEInventors: Rainer Noack, Clemens Palm, Carsten Groening, Gunter Lipowsky
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Patent number: 8575366Abstract: The present invention relates to a process for producing 2-halogenomethylphenyl acetic acid derivatives.Type: GrantFiled: February 1, 2010Date of Patent: November 5, 2013Assignee: BASF SEInventors: Alexander Korte, Mark Alan Kearns, Jonathan O. Smith, Gunter Lipowsky, Willi Bieche
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Patent number: 8491758Abstract: 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.Type: GrantFiled: December 9, 2010Date of Patent: July 23, 2013Assignee: BASF SEInventors: Gunter Lipowsky, Steffen Rissel, Volker Schliephake, Ulrich Jäger, Sylke Haremza
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Patent number: 8362271Abstract: The present invention to a process for preparing 1-phenylpyrazoles of the formula I in which each R1 is independently selected from chlorine, fluorine, alkyl, haloalkyl, alkoxy and haloalkoxy; n is 1, 2 or 3; each R2 is 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-C1-C4-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 R1, n, R2, 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.Type: GrantFiled: September 3, 2010Date of Patent: January 29, 2013Assignee: BASF SEInventors: Maximilian Dochnahl, Gunter Lipowsky
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Publication number: 20120165544Abstract: The present invention to a process for preparing 1-phenylpyrazoles of the formula I in which each R1 is independently selected from chlorine, fluorine, alkyl, haloalkyl, alkoxy and haloalkoxy; n is 1, 2 or 3; each R2 is 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-C1-C4-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 R1, n, R2, 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.Type: ApplicationFiled: September 3, 2010Publication date: June 28, 2012Applicant: BASF SEInventors: Maximilian Dochnahl, Gunter Lipowsky
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Patent number: 8183018Abstract: 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.Type: GrantFiled: October 23, 2007Date of Patent: May 22, 2012Assignee: BASF AktiengesellschaftInventors: Dietmar Haering, Uwe Meisenburg, Mathieu Chabanas, Gunter Lipowsky
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Publication number: 20110295022Abstract: The present invention relates to a process for producing 2-halogenomethylphenyl acetic acid derivatives.Type: ApplicationFiled: February 1, 2010Publication date: December 1, 2011Applicant: BASE SEInventors: Alexander Korte, Mark Alan Kearns, Jonathan O. Smith, Gunter Lipowsky, Willi Bieche
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Publication number: 20110295019Abstract: 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.Type: ApplicationFiled: February 4, 2010Publication date: December 1, 2011Applicant: BASF SEInventors: Rainer Noack, Clemens Palm, Carsten Gröning, Gunter Lipowsky
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Publication number: 20110140050Abstract: 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.Type: ApplicationFiled: December 9, 2010Publication date: June 16, 2011Applicant: BASF SEInventors: Gunter Lipowsky, Steffen Rissel, Volker Schliephake, Ulrich Jaeger, Sylke Haremza
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Patent number: 7745658Abstract: 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.Type: GrantFiled: July 7, 2008Date of Patent: June 29, 2010Assignee: BASF SEInventors: Gunter Lipowsky, Joachim Wulff-Doering, Peter Zurowski, Juergen Strasser
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Patent number: 7700804Abstract: 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 Brønsted acid is added to the liquid mixture to reduce fouling.Type: GrantFiled: December 21, 2007Date of Patent: April 20, 2010Assignee: BASF AktiengesellschaftInventors: Gunter Lipowsky, Volker Schliephake, Steffen Rissel, Ulrich Jaeger, Frank Hoefer, Sylke Haremza, Peter Zurowski, Klaus Joachim Mueller-Engel
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Publication number: 20100048927Abstract: 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.Type: ApplicationFiled: October 23, 2007Publication date: February 25, 2010Applicant: BASF SEInventors: Dietmar Haering, Uwe Meisenburg, Mathieu Chabanas, Gunter Lipowsky
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Publication number: 20090023947Abstract: A process for preparing tertiary alkyl esters of (meth)acrylic acid having at least 4 carbon atoms in the alkyl radical, comprising the steps of: (1) reacting (meth)acrylic acid with at least one olefin of the general formula I: in which R1 and R2 are an alkyl radical, and R3 is a hydrogen atom, an alkyl radical, a cycloalkyl radical, an aryl radical, an alkylcycloalkyl radical, an alkylaryl radical, a cycloalkylaryl radical, or an alkylcycloalkylaryl radical; in homogeneous phase in the presence of an acidic catalyst in a reactor, (2) discharging the resulting reaction mixture (1) from the reactor, (3) separating the discharged reaction mixture (2) into a mixture (3.1) which comprises the catalyst and a mixture (3.2) which comprises the tertiary alkyl ester of (meth)acrylic acid having at least 4 carbon atoms in the alkyl radical, and (4) removing the tertiary alkyl ester of (meth)acrylic acid having at least 4 carbon atoms in the alkyl radical from the mixture (3.Type: ApplicationFiled: July 7, 2008Publication date: January 22, 2009Applicant: BASF SEInventors: Gunter Lipowsky, Joachim Wulff-Doring, Peter Zurowski, Jurgen Strasser
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Publication number: 20080149319Abstract: 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 Brønsted acid is added to the liquid mixture to reduce fouling.Type: ApplicationFiled: December 21, 2007Publication date: June 26, 2008Applicant: BASF AktiengesellschaftInventors: Gunter Lipowsky, Volker Schliephake, Steffen Rissel, Ulrich Jager, Frank Hofer, Sylke Haremza, Peter Zurowski, Klaus Joachim Muller-Engel
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Patent number: 7323590Abstract: 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.Type: GrantFiled: April 10, 2006Date of Patent: January 29, 2008Assignee: BASF AktiengesellschaftInventors: Gunter Lipowsky, Klaus Joachim Mueller-Engel