Patents by Inventor Alexandra Wiedemann
Alexandra Wiedemann 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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Publication number: 20230203209Abstract: The presently claimed invention relates to the use of at least one compound of general formula (I) as an emulsifier or a stabilizer. The presently claimed invention further relates to the use of at least one compound of general formula (I) as an emulsifier or stabilizer in a polymerization reaction, preferably an emulsion polymerization. The presently claimed invention also relates to a method of emulsifying and/or stabilizing or dispersing liquids or solids in emulsion polymerization using at least one compound of general formula (I). Further, the presently claimed invention relates to a cleaning composition comprising at least one compound of general formula (I) and at least one additive.Type: ApplicationFiled: June 2, 2021Publication date: June 29, 2023Inventors: Christian Hubert Weidl, Markus Roesch, Juergen Tropsch, Sebastian Mirtschin, Alexandra Wiedemann, Hans-Christian Raths, Bernd Schneider
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Patent number: 9834486Abstract: The invention relates to a process for producing polymer composites suitable for absorbing and storing aqueous liquids, to the polymer composites obtainable by this process, and to the use of the polymer composites. The process comprises free-radical polymerization of a monomer composition M comprising 50 to 100% by weight, based on the total amount of monomers A and B, of at least one monomer A having one ethylenic double bond and at least one neutralizable acid group, 0 to 50% by weight of optionally one or more comonomers B which are different than the monomers A and have one ethylenic double bond, and 1 to 10% by weight, based on the total amount of monomers A and B, of at least one crosslinker C.Type: GrantFiled: April 28, 2014Date of Patent: December 5, 2017Assignee: BASF SEInventors: Francisco Javier Lopez Villanueva, Tina Mark, Alexandra Wiedemann, Alexander Wissemeier, Michael Seufert, Jorge Sanz-Gomez, Alban Glaser
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Patent number: 9809686Abstract: The invention relates to a process for producing polyarylene ether beads from a polyarylene ether solution, comprising the steps of i) dividing the polyarylene ether solution in a division apparatus which is made to vibrate with a frequency of 10 to 1400 Hz to obtain droplets, ii) transferring the droplets into a precipitation bath to form polyarylene ether beads in the precipitation bath which (A) comprises at least one aprotic solvent (component (1)) and at least one protic solvent (component (2)), (B) has a temperature of 0° C. to Tc, where the critical temperature Tc in [° C.] can be determined by the numerical equation Tc=(77?c)/0.58 in which c is the concentration of component (1) in the precipitation bath in [% by weight] and (C) has component (1) in concentrations of 5% by weight to cc, where the critical concentration cc in [% by weight] can be determined by the numerical equation cc=77?0.58*T in which T is the temperature in the precipitation bath in [° C.Type: GrantFiled: July 16, 2014Date of Patent: November 7, 2017Assignee: BASF SEInventors: Joerg Erbes, Stefan Muessig, Tobias Kortekamp, Marco Krueger, Markus Steffen, Angela Ulzhoefer, Cecile Schneider, Alexandra Wiedemann, Simon Gramlich
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Publication number: 20160326307Abstract: The present invention relates to a polyester comprising units derived from monomers A, B and C, wherein the group of monomers A consists of (a1) monomers A1, or (a2) monomers A1 and monomers A2, with monomers A1 and monomers A2 being present in a molar ratio of at least 31:69, preferably at least 4:1, wherein the monomers A1 are selected from the group consisting of aromatic sulfonated dicarboxylic acid based monomers of general formulae (I), (II), (III) and (IV), and wherein the monomers A2 are selected from the group consisting of non-sulfonated aromatic dicarboxylic acid based monomers of general formulae (V), (VI) and (VII); and wherein the group of monomers B consists of (b1) monomers B1, or (b2) monomers B1 and monomers B2, with monomers B1 and monomers B2 being present in a molar ratio of at least 1:9, preferably at least 4:1, wherein the monomers B1 are selected from the group consisting of unsaturated dicarboxylic acid based monomers of general formula (VIII), and wherein the monomers B2 are selectedType: ApplicationFiled: December 17, 2014Publication date: November 10, 2016Applicant: BASF SEInventors: Motonori YAMAMOTO, Alexander WISSEMEIER, Wolfgang WEIGELT, Harald KELLER, Michael SEUFERT, Gimmy Alex FERNANDEZ RAMIREZ, Jorge SANZ-GOMEZ, Alexandra WIEDEMANN
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Publication number: 20160326306Abstract: Cross-linked polyester derived from unsaturated polyester chains, which are inter-molecularly cross-linked and comprise units derived from unsaturated dicarboxylic acid based monomers and ethylene glycol based monomers.Type: ApplicationFiled: December 17, 2014Publication date: November 10, 2016Applicant: BASF SEInventors: Motonori YAMAMOTO, Alexander WISSEMEIER, Wolfgang WEIGELT, Harald KELLER, Michael SEUFERT, Gimmy Alex FERNANDEZ RAMIREZ, Jorge SANZ-GOMEZ, Alexandra WIEDEMANN
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Publication number: 20160159990Abstract: The invention relates to a process for producing polyarylene ether beads from a polyarylene ether solution, comprising the steps of i) dividing the polyarylene ether solution in a division apparatus which is made to vibrate with a frequency of 10 to 1400 Hz to obtain droplets, ii) transferring the droplets into a precipitation bath to form polyarylene ether beads in the precipitation bath which (A) comprises at least one aprotic solvent (component (1)) and at least one protic solvent (component (2)), (B) has a temperature of 0° C. to Tc, where the critical temperature Tc in [° C.] can be determined by the numerical equation Tc=(77?c)/0.58 in which c is the concentration of component (1) in the precipitation bath in [% by weight] and (C) has component (1) in concentrations of 5% by weight to cc, where the critical concentration cc in [% by weight] can be determined by the numerical equation cc=77?0.58*T in which T is the temperature in the precipitation bath in [° C.Type: ApplicationFiled: July 16, 2014Publication date: June 9, 2016Applicant: BASF SEInventors: Joerg ERBES, Stefan MUESSIG, Tobias KORTEKAMP, Marco KRUEGER, Markus STEFFEN, Angela ULZHOEFER, Cecile SCHNEIDER, Alexandra WIEDEMANN, Simon GRAMLICH
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Publication number: 20160075612Abstract: The present invention relates to a process for producing polymer composites suitable for absorbing and storing aqueous liquids and to the polymer composites obtainable by this process. The invention further relates to the use of these polymer composites.Type: ApplicationFiled: April 28, 2014Publication date: March 17, 2016Inventors: Francisco Javier LOPEZ VILLANUEVA, Tina MARK, Alexandra WIEDEMANN, Alexander WISSEMEIER, Michael SEUFERT, Jorge SANZ-GOMEZ, Alban GLASER
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Patent number: 7662900Abstract: The present invention relates to a process for preparing polyisobutene by polymerizing isobutene using an inert diluent and a halogen-containing Lewis acid as a catalyst, wherein the isobutene in the form of droplets is contacted with the Lewis acid in a polymerization apparatus.Type: GrantFiled: October 10, 2006Date of Patent: February 16, 2010Assignee: BASF AktiengesellschaftInventors: Volker Seidl, Carolin Nadine Duecker, Alexandra Wiedemann, Thomas Wettling, Uwe Rachwalsky, Marco-Christian Volland, Martin Karches, Franz Weber, Dieter Stuetzer, Werner Bochnitschek
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Publication number: 20080214763Abstract: The present invention relates to a process for preparing polyisobutene by polymerizing isobutene using an inert diluent and a halogen-containing Lewis acid as a catalyst, wherein the isobutene in the form of droplets is contacted with the Lewis acid in a polymerization apparatus.Type: ApplicationFiled: October 10, 2006Publication date: September 4, 2008Applicant: BASFSEInventors: Volker Seidl, Carolin Nadine Ducker, Alexandra Wiedemann, Thomas Wettling, Uwe Rachwalsky, Marco-Christian Volland, Martin Karches, Franz Weber, Dieter Stutzer, Werner Bochnitschek