Patents by Inventor Maria Guixa Guardia
Maria Guixa Guardia 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: 9186599Abstract: A process which isolates tetrahydrofuran from a stream of tetrahydrofuran, alkanol and high boilers, by: (a) separating off a first stream of tetrahydrofuran and alkanol as azeotrope in a first distillation stage; (b) feeding part of the first stream into a reactor for esterifying maleic anhydride, giving a second stream of tetrahydrofuran and monoalkyl maleate; (c) separating the second stream into a third stream of monoalkyl maleate and a fourth stream of tetrahydrofuran in a second distillation stage; (d) feeding the fourth stream of tetrahydrofuran from the second distillation stage and the part of the first stream from (a) which is not fed to the reactor into a third distillation stage to obtain a product stream of tetrahydrofuran and a sixth stream of tetrahydrofuran and alkanol; (e) recirculating the sixth stream from the third distillation stage into the first distillation stage or the reactor in (b).Type: GrantFiled: September 18, 2011Date of Patent: November 17, 2015Assignee: BASF SEInventors: Maria Guixa Guardia, Rolf Pinkos, Nadja Pollmer, Wolf-Steffen Weissker, Hugues Vandenmersch
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Patent number: 9132417Abstract: In a process for preparing a supported hydrogenation catalyst with increased hydrogenation activity, which comprises a hydrogenating metal and/or an oxide of a hydrogenating metal on an Al2O3-containing support material, said calcined supported hydrogenation catalyst is treated before or after the final shaping thereof and before use thereof in the hydrogenation with a base solution having a pH of >10 at a temperature in the range from 20 to 120° C. for 1 to 300 hours.Type: GrantFiled: November 16, 2010Date of Patent: September 15, 2015Assignee: BASF SEInventors: Rolf Tompers, Heiko Urtel, Rolf Pinkos, Gerd-Dieter Tebben, Jens Heimann, Maria Guixa Guardia, Sabine Borchers
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Patent number: 8853465Abstract: The present invention relates to a process for preparing neopentyl glycol (NPG) by continuously hydrogenating hydroxypivalaldehyde (HPA) with hydrogen, in the liquid phase, in the presence of a hydrogenation catalyst, in a hydrogenation reactor (5), by combining an HPA-comprising stream (1) with an NPG-comprising stream (2) to give a hydrogenation feed (4) and introducing the hydrogenation feed (4) into the hydrogenation reactor (5) and additionally supplying at least one pH regulator (3) selected from the group consisting of tertiary amine, an inorganic base, an inorganic acid and an organic acid to the HPA-comprising stream (1) or the NPG-comprising stream (2) or the hydrogenation feed (4), in order to establish a pH of 7.0 to 9.Type: GrantFiled: May 11, 2011Date of Patent: October 7, 2014Assignee: BASF SEInventors: Michael Steiniger, Maria Guixa Guardia, Kai Stehmeier
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Publication number: 20130253132Abstract: Polymer obtainable by polycondensation or polyadduct formation from monomeric compounds, wherein accompanying use is made as monomeric compound of 2-isopropyl-2-alkyl-1,3-propanediols of the formula I or alkoxylated derivatives thereof.Type: ApplicationFiled: May 21, 2013Publication date: September 26, 2013Applicant: BASF SEInventors: Darijo MIJOLOVIC, Sebastien GARNIER, Qiang MIAO, Maria GUIXA-GUARDIA, Gerd-Dieter TEBBEN
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Patent number: 8530570Abstract: Polymer obtainable by polycondensation or polyadduct formation from monomeric compounds, wherein accompanying use is made as monomeric compound of 2-isopropyl-2-alkyl-1,3-propanediols of the formula I or alkoxylated derivatives thereof.Type: GrantFiled: July 21, 2009Date of Patent: September 10, 2013Assignee: BASF SEInventors: Darijo Mijolovic, Sebastien Garnier, Qiang Miao, Maria Guixa Guardia, Gerd-Dieter Tebben
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Patent number: 8519084Abstract: A polymer obtainable by polycondensation or polyaddition of monomeric compounds, wherefor accompanying use is made as monomeric compound of 2-(2-methylbutyl)-2-propyl-1,3-propanediol of the formula I or its alkoxylated derivatives (also referred to collectively below as C11 diol).Type: GrantFiled: June 10, 2009Date of Patent: August 27, 2013Assignee: BASF SEInventors: Darijo Mijolovic, Sebastien Garnier, Qiang Miao, Maria Guixa Guardia, Gerd-Dieter Tebben, Dag Wiebelhaus
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Publication number: 20120245394Abstract: In a process for preparing a supported hydrogenation catalyst with increased hydrogenation activity, which comprises a hydrogenating metal and/or an oxide of a hydrogenating metal on an Al2O3-containing support material, said calcined supported hydrogenation catalyst is treated before or after the final shaping thereof and before use thereof in the hydrogenation with a base solution having a pH of >10 at a temperature in the range from 20 to 120° C. for 1 to 300 hours.Type: ApplicationFiled: November 16, 2010Publication date: September 27, 2012Inventors: Rolf Tompers, Heiko Urtel, Rolf Pinkos, Gerd-Dieter Tebben, Jens Heimann, Maria Guixa Guardia, Sabine Borchers
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Patent number: 8217186Abstract: The invention relates to a process for preparing ?-caprolactone from 6-hydroxycaproic ester in the gas phase in the presence of activated carbon as a catalyst and subsequent distillation.Type: GrantFiled: December 10, 2008Date of Patent: July 10, 2012Assignee: BASF SEInventors: Rolf Pinkos, Gerd-Dieter Tebben, Daniel Breuninger, Tilman Sirch, Christophe Bauduin, Maria Guixa Guardia, Thomas Krug
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Publication number: 20120073953Abstract: A process which isolates tetrahydrofuran from a stream of tetrahydrofuran, alkanol and high boilers, by: (a) separating off a first stream of tetrahydrofuran and alkanol as azeotrope in a first distillation stage; (b) feeding part of the first stream into a reactor for esterifying maleic anhydride, giving a second stream of tetrahydrofuran and monoalkyl maleate; (c) separating the second stream into a third stream of monoalkyl maleate and a fourth stream of tetrahydrofuran in a second distillation stage; (d) feeding the fourth stream of tetrahydrofuran from the second distillation stage and the part of the first stream from (a) which is not fed to the reactor into a third distillation stage to obtain a product stream of tetrahydrofuran and a sixth stream of tetrahydrofuran and alkanol; (e) recirculating the sixth stream from the third distillation stage into the first distillation stage or the reactor in (b).Type: ApplicationFiled: September 18, 2011Publication date: March 29, 2012Applicant: BASF SEInventors: Maria GUIXA GUARDIA, Rolf Pinkos, Nadja Pollmer, Wolf-Steffen Weissker, Hugues Vandenmersch
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Publication number: 20110282106Abstract: The present invention relates to a process for preparing neopentyl glycol (NPG) by continuously hydrogenating hydroxypivalaldehyde (HPA) with hydrogen, in the liquid phase, in the presence of a hydrogenation catalyst, in a hydrogenation reactor (5), by combining an HPA-comprising stream (1) with an NPG-comprising stream (2) to give a hydrogenation feed (4) and introducing the hydrogenation feed (4) into the hydrogenation reactor (5) and additionally supplying at least one pH regulator (3) selected from the group consisting of tertiary amine, an inorganic base, an inorganic acid and an organic acid to the HPA-comprising stream (1) or the NPG-comprising stream (2) or the hydrogenation feed (4), in order to establish a pH of 7.0 to 9.Type: ApplicationFiled: May 11, 2011Publication date: November 17, 2011Applicant: BASF SEInventors: Michael Steiniger, Maria Guixa Guardia, Kai Stehmeier
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Publication number: 20110178239Abstract: Polymer obtainable by polycondensation or polyadduct formation from monomeric compounds, wherein accompanying use is made as monomeric compound of substituted 2-aryl-2-alkyl-1,3-propanediols of the formula I or substituted 2-cyclohexyl-2-alkyl-1,3-propanediols of the formula Ia or the alkoxylated derivatives of the formula I or of the formula Ia.Type: ApplicationFiled: August 24, 2009Publication date: July 21, 2011Applicant: BASF SEInventors: Darijo Mijolovic, Sebastien Garnier, Qiang Miao, Maria Guixa Guardia, Gerd-Dieter Tebben
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Publication number: 20110144259Abstract: Polymer obtainable by polycondensation or polyadduct formation from monomeric compounds, wherein accompanying use is made as monomeric compound of 1,1-dimethylolcycloalkanes of the formula I or 1,1-dimethylolcycloalkenes of the formula Ia or alkoxylated derivatives thereof.Type: ApplicationFiled: August 14, 2009Publication date: June 16, 2011Applicant: BASF SEInventors: Darijo Mijolovic, Sebastien Garnier, Qiang Miao, Maria Guixa Guardia, Gerd-Dieter Tebben
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Publication number: 20110130514Abstract: A polymer obtainable by polycondensation or polyaddition of monomeric compounds, wherefor accompanying use is made as monomeric compound of 2-(2-methylbutyl)-2-propyl-1,3-propanediol of the formula I or its alkoxylated derivatives (also referred to collectively below as C11 diol).Type: ApplicationFiled: June 10, 2009Publication date: June 2, 2011Applicant: BASF SEInventors: Darijo Mijolovic, Sebastien Carnier, Qiang Miao, Maria Guixa Guardia, Gerd-Dieter Tebben, Dag Wiebelhaus
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Publication number: 20110124809Abstract: Polymer obtainable by polycondensation or polyadduct formation from monomeric compounds, wherein accompanying use is made as monomeric compound of 2-isopropyl-2-alkyl-1,3-propanediols of the formula I or alkoxylated derivatives thereof.Type: ApplicationFiled: July 21, 2009Publication date: May 26, 2011Applicant: BASF SEInventors: Darijo Mijolovic, Sebastien Garnier, Qiang Miao, Maria Guixa Guardia, Gerd-Dieter Tebben
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Publication number: 20110040030Abstract: A polymer obtainable by polycondensation or polyaddition from monomeric compounds, wherein one monomeric compound used is a mixture of hydroxymethylcyclohexanepropanol or its alkoxylated derivatives and hydroxymethylcyclohexaneisopropanol or its alkoxylated derivatives (referred to below for short as C1/C3 cyclohexanediol mixture).Type: ApplicationFiled: May 12, 2009Publication date: February 17, 2011Applicant: BASF SEInventors: Darijo Mijolovic, Sebastien Garnier, Qiang Miao, Maria Guixa Guardia, Gerd-Dieter Tebben, Dag Wiebelhaus
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Publication number: 20100256398Abstract: The invention relates to a process for preparing ?-caprolactone from 6-hydroxycaproic ester in the gas phase in the presence of activated carbon as a catalyst and subsequent distillation.Type: ApplicationFiled: December 10, 2008Publication date: October 7, 2010Applicant: BASE SEInventors: Rolf Pinkos, Gerd-Dieter Tebben, Daniel Breuninger, Tilman Sirch, Christophe Bauduin, Maria Guixa Guardia, Thomas Krug
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Publication number: 20100168445Abstract: The present invention provides a process for preparing ?-caprolactone in a purity above 99%, in which 6-hydroxycaproic ester comprising from 0.5 to 40% by weight of adipic diester is cyclized in the gas phase at from 150 to 450° C. in the presence of oxidic catalysts and ?-caprolactone is obtained from the cyclization product by distillation.Type: ApplicationFiled: June 6, 2008Publication date: July 1, 2010Applicant: BASF SEInventors: Rolf Pinkos, Gerd Tebben, Christophe Bauduin, Daniel Breuninger, Maria Guixa Guardia, Tilman Sirch, Thomas Krug