Patents by Inventor Andrea Brasch

Andrea Brasch 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).

  • Stable Shaped Alumina and Method for Producing Same
    Publication number: 20230183085
    Abstract: The present invention relates to a calcined shaped alumina and to a method of preparing a calcined shaped alumina. The method comprises that the alumina in the alumina suspension is hydrothermally aged to have a specific crystallite size. This in turn produces a highly stable alumina in the form of a calcined shaped alumina particularly at temperatures of 1200° C. and above.
    Type: Application
    Filed: May 26, 2021
    Publication date: June 15, 2023
    Inventors: Andrea Brasch, Angela Siegel, Yanick Holzmann, Stefan Howe
  • Process for the synthesis of magnesium aluminate spinels
    Patent number: 9340432
    Abstract: Magnesium aluminate spinels are made by hydrothermally aging an aqueous slurry of a spinel precursor which can be (a) a mixture of boehmite alumina and a magnesium precursor, (b) an aluminum magnesium oxide or hydroxide, and (c) mixtures thereof. At least one of the aged slurries is dried to remove water and produce at least one dried spinel precursor. The dried spinel precursor is then calcined to produce the magnesium aluminate spinel.
    Type: Grant
    Filed: April 15, 2013
    Date of Patent: May 17, 2016
    Assignee: Sasol Performance Chemicals GmbH
    Inventors: Brian Peoples, David Barclay, Mark Chavez, Allison Hann, Andrea Brasch, Klaus P. G. Diblitz
  • Process for the Synthesis of Magnesium Aluminate Spinels
    Publication number: 20150183651
    Abstract: Magnesium aluminate spinels are made by hydrothermally aging an aqueous slurry of a spinel precursor which can be (a) a mixture of boehmite alumina and a magnesium precursor, (b) an aluminum magnesium oxide or hydroxide, and (c) mixtures thereof. At least one of the aged slurries is dried to remove water and produce at least one dried spinel precursor. The dried spinel precursor is then calcined to produce the magnesium aluminate spinel.
    Type: Application
    Filed: April 15, 2013
    Publication date: July 2, 2015
    Inventors: Brian Peoples, David Barclay, Mark Chavez, Allison Hann, Andrea Brasch, Klaus P. G. Diblitz
  • Process for producing a thermostable TiO/SiOmixed oxide and mixed oxide produced therefrom
    Patent number: 8647599
    Abstract: The present invention relates to a process for preparing TiO2/SiO2 mixed oxides or the hydrates and/or oxide hydrates thereof comprised of 0.5 to 95 wt % SiO2 and the balance as TiO2, each referring to the completely calcined product, by using titanium alcoholates and aqueous silica sol. Moreover, the invention relates to the use of these mixed oxides as catalyst carriers.
    Type: Grant
    Filed: September 2, 2010
    Date of Patent: February 11, 2014
    Assignee: Sasol Germany GmbH
    Inventors: Jurgen Schimanski, Kai Dallmann, Sohnke Rolfs, Kai Dolling, Andrea Brasch, Ute Freese
  • Process for preparing boehmitic aluminas having a high ?-conversion temperature
    Patent number: 8147795
    Abstract: The present invention relates to a process for preparing boehmitic aluminas by hydrolysis of aluminum alcoholates in aqueous, alkaline solution. It further relates to aluminas or alumina hydrates prepared by this process and their uses.
    Type: Grant
    Filed: July 16, 2004
    Date of Patent: April 3, 2012
    Assignee: Sasol Germany GmbH
    Inventors: Kai Dolling, Andrea Brasch
  • Process for Producing a Thermostable Ti02/Si02 Mixed Oxide and Mixed Oxide Produced Therefrom
    Publication number: 20110020200
    Abstract: The present invention relates to a process for preparing TiO2/SiO2 mixed oxides or the hydrates and/or oxide hydrates thereof comprised of 0.5 to 95 wt % SiO2 and the balance as TiO2, each referring to the completely calcined product, by using titanium alcoholates and aqueous silica sol. Moreover, the invention relates to the use of these mixed oxides as catalyst carriers.
    Type: Application
    Filed: September 2, 2010
    Publication date: January 27, 2011
    Inventors: Jurgen Schimanski, Kai Dallmann, Sohnke Rolfs, Kai Dolling, Andrea Brasch, Ute Freese
  • Process for producing a thermostable TiO2/SiO2 mixed oxide and mixed oxide produced therefrom
    Patent number: 7790138
    Abstract: The present invention relates to a process for preparing TiO2/SiO2 mixed oxides or the hydrates and/or oxide hydrates thereof comprised of 0.5 to 95 wt % SiO2 and the balance as TiO2, each referring to the completely calcined product, by using titanium alcoholates and aqueous silica sol. Moreover, the invention relates to the use of these mixed oxides as catalyst carriers.
    Type: Grant
    Filed: May 4, 2006
    Date of Patent: September 7, 2010
    Assignee: Sasol Germany GmbH
    Inventors: Jurgen Schimanski, Kai Dallmann, Sohnke Rolfs, Kai Dolling, Andrea Brasch, Ute Freese
  • Method for producing aluminum trihydrates having a high pore volume, aluminum trihydrates produced according to this method and the use thereof
    Patent number: 7790139
    Abstract: The object of the invention is a method for the manufacture of aluminum trihydrates by hydrolysis of aluminum alcoholates in aqueous, alkaline solution with addition of organic compounds, the so manufactured aluminum trihydrates and their use as catalyst supports.
    Type: Grant
    Filed: July 16, 2004
    Date of Patent: September 7, 2010
    Assignee: Sasol Germany GmbH
    Inventors: Kai Dolling, Andrea Brasch
  • Process for producing a thermostable TiO2/SiO2 mixed oxide and mixed oxide produced therefrom
    Publication number: 20070003464
    Abstract: The present invention relates to a process for preparing TiO2/SiO2 mixed oxides or the hydrates and/or oxide hydrates thereof comprised of 0.5 to 95 wt % SiO2 and the balance as TiO2, each referring to the completely calcined product, by using titanium alcoholates and aqueous silica sol. Moreover, the invention relates to the use of these mixed oxides as catalyst carriers.
    Type: Application
    Filed: May 4, 2006
    Publication date: January 4, 2007
    Inventors: Jurgen Schimanski, Kai Dallmann, Sohnke Rolfs, Kai Dolling, Andrea Brasch, Ute Freese
  • Method for producing aluminum trihydrates having a high pore volume, aluminum trihydrates produced according to this method and the use thereof
    Publication number: 20060280676
    Abstract: The object of the invention is a method for the manufacture of aluminum trihydrates by hydrolysis of aluminum alcoholates in aqueous, alkaline solution with addition of organic compounds, the so manufactured aluminum trihydrates and their use as catalyst supports.
    Type: Application
    Filed: July 16, 2004
    Publication date: December 14, 2006
    Inventors: Kai Dolling, Andrea Brasch
  • Process for preparing boehmitic aluminas having a high alpha -conversion temperature
    Publication number: 20060246000
    Abstract: The present invention relates to a process for preparing boehmitic aluminas by hydrolysis of aluminium alcoholates in aqueous, alkaline solution. It further relates to aluminas or alumina hydrates prepared by this process and their uses.
    Type: Application
    Filed: July 16, 2004
    Publication date: November 2, 2006
    Inventors: Kai Dolling, Andrea Brasch
  • Process for the manufacture of dispersible alumino-silicates
    Patent number: 7125532
    Abstract: Process for the manufacture of high-purity alumino-silicates which are dispersible in aqueous and/or aqueous-acidic media by hydrolysis of aluminum compounds and organosilicon compounds.
    Type: Grant
    Filed: January 23, 2002
    Date of Patent: October 24, 2006
    Assignee: Sasol Germany GmbH
    Inventors: Andrea Brasch, Klaus Diblitz, Arnold Meyer
  • Process for the preparation of high-purity magnesium hydroxide and magnesium oxide from magnesium alkoxides
    Patent number: 6569399
    Abstract: There is provided a process for producing high-purity magnesium hydroxide by reaction of magnesium or reactive magnesium compounds with hydroxy compounds yielding magnesium alkoxides, followed by hydrolysis to form magnesium hydroxide, or a process for producing magnesium oxide by calcination of magnesium hydroxide.
    Type: Grant
    Filed: June 24, 1998
    Date of Patent: May 27, 2003
    Assignee: SASOL Germany GmbH
    Inventors: Andrea Brasch, Klaus Diblitz, Kai Dölling, Tilo Feldbaum, Klaus Noweck, Jan Schiefler
  • Process for producing hydrotalcites and the metal oxides thereof
    Patent number: 6517795
    Abstract: A process for producing high-purity hydrotalcites by reacting alcohols or alcohol mixtures with at least one or more divalent metal(s) and at least one or more trivalent metal(s) and hydrolyzing the resultant alcoholate mixture with water. The corresponding metal oxides can be produced by calcination.
    Type: Grant
    Filed: July 31, 1997
    Date of Patent: February 11, 2003
    Assignee: Sasol Germany GmbH
    Inventors: Klaus Noweck, Klaus Diblitz, Jan Sohiefler, Andrea Brasch
  • Process for producing hydrotalcites and the metal oxides thereof
    Patent number: 6514473
    Abstract: A process for producing high-purity hydrotalcites by reacting alcohols or alcohol mixtures with at least one or more divalent metal(s) and at least one or more trivalent metal(s) and hydrolysing the resultant alcoholate mixture with water. The corresponding metal oxides can be produced by calcination.
    Type: Grant
    Filed: December 12, 2000
    Date of Patent: February 4, 2003
    Assignee: SASOL Germany GmbH
    Inventors: Klaus Noweck, Klaus Diblitz, Jan Schiefler, Andrea Brasch
  • Process for the manufacture of dispersible alumino-silicates
    Publication number: 20020098142
    Abstract: Process for the manufacture of high-purity alumino-silicates which are dispersible in aqueous and/or aqueous-acidic media by hydrolysis of aluminum compounds and organosilicon compounds
    Type: Application
    Filed: January 23, 2002
    Publication date: July 25, 2002
    Inventors: Andrea Brasch, Klaus Diblitz, Arnold Meyer
  • PROCESS FOR THE PREPARATION OF HIGH-PURITY MAGNESIUM HYDROXIDE AND MAGNESIUM OXIDE FROM MAGNESIUM ALKOXIDES
    Publication number: 20020015677
    Abstract: There is provided a process for producing high-purity magnesium hydroxide by reaction of magnesium or reactive magnesium compounds with hydroxy compounds yielding magnesium alkoxides, followed by hydrolysis to form magnesium hydroxide, or a process for producing magnesium oxide by calcination of magnesium hydroxide.
    Type: Application
    Filed: June 24, 1998
    Publication date: February 7, 2002
    Inventors: ANDREA BRASCH, KLAUS DIBLITZ, KAI DOLLING, TILO FELDBAUM, KLAUS NOWECK, JAN SCHIEFLER
  • Process for the manufacture of dispersible alumino-silicates
    Patent number: 6245310
    Abstract: The present invention relates to a process for the manufacture of high-purity alumino-silicates which are dispersible in aqueous and/or aqueous-acidic media by hydrolysis of aluminium compounds and silicic acid compounds and hydrothermal treatment.
    Type: Grant
    Filed: August 19, 1999
    Date of Patent: June 12, 2001
    Assignee: RWE-DEA Aktiengesellschaft fuer Mineraloel und Chemie
    Inventors: Andrea Brasch, Klaus Diblitz, Arnold Meyer
  • Process for producing hydrotalcites and the metal oxides thereof
    Publication number: 20010001653
    Abstract: A process for producing high-purity hydrotalcites by reacting alcohols or alcohol mixtures with at least one or more divalent metal(s) and at least one or more trivalent metal(s) and hydrolysing the resultant alcoholate mixture with water. The corresponding metal oxides can be produced by calcination.
    Type: Application
    Filed: December 12, 2000
    Publication date: May 24, 2001
    Inventors: Klaus Noweck, Klaus Diblitz, Jan Schiefler, Andrea Brasch
  • Process for producing hydrotalcites by hydrolyzing metal alcoholates
    Patent number: 6180764
    Abstract: A process for producing high-purity hydrotalcites by reacting alcohols or alcohol mixtures with at least one or more divalent metal(s) and at least one or more trivalent metal(s) and hydrolysing the resultant alcoholate mixture with water. The corresponding metal oxides can be produced by calcination.
    Type: Grant
    Filed: April 30, 1999
    Date of Patent: January 30, 2001
    Assignee: RWE-DEA Aktiengesellschaft fur Mineraloel und Chemie
    Inventors: Klaus Noweck, Klaus Diblitz, Jan Sohiefler, Andrea Brasch