Patents by Inventor Andreas Christiansen

Andreas Christiansen 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).

  • Organophosphorus compounds based on tetraphenol (TP)-substituted structures
    Patent number: 9000220
    Abstract: The invention relates to the synthesis of tetraphenol-substituted structures, in particular meta-substituted xylenes. Said tetraphenol-type structures are reacted to obtain organic phosphorus compounds, in particular organophosphites. The invention further relates to the production of catalytically active compositions which contain transition metals in addition to the aforementioned organic phosphorus compounds. According to another subject matter of the invention, said catalytically active compositions are used in chemical reactions with small molecules, e.g. HCN, CO, hydrogen, and amines.
    Type: Grant
    Filed: August 26, 2010
    Date of Patent: April 7, 2015
    Assignee: Evonik Degussa GmbH
    Inventors: Andrea Christiansen, Robert Franke, Dirk Fridag, Dieter Hess, Burkard Kreidler, Dieter Vogt, Laura Bini, Michele Janssen, Bart Hamers
  • NOVEL ORGANOPHOSPHORUS COMPOUNDS BASED ON ANTHRACENETRIOL
    Publication number: 20140309423
    Abstract: The subject matter of the present invention is a plurality of products and the use thereof as a catalytically active composition in a method for producing aldehydes.
    Type: Application
    Filed: October 24, 2012
    Publication date: October 16, 2014
    Applicant: EVONIK DEGUSSA GmbH
    Inventors: Andrea Christiansen, Robert Franke, Dirk Fridag, Dieter Hess, Burkard Kreidler, Detlef Selent, Armin Boerner
  • METHOD FOR THE PREPARATION OF BIPHEPHOS
    Publication number: 20130324756
    Abstract: The invention relates to a process for producing 6,6?-[(3,3?-di-tert-butyl-5,5?-dimethoxy-1,1?-biphenyl-2,2?diyl)bis(oxy)]bis(dibenzo[d,f][1,3,2]dioxaphosphepine), abbreviated to biphephos (see formula 1), with low chlorine content
    Type: Application
    Filed: December 22, 2011
    Publication date: December 5, 2013
    Applicant: Evonik Oxeno GmbH
    Inventors: Burkard Kreidler, Dirk Fridag, Bernhard Schemmer, Bjoern Wechsler, Andrea Christiansen, Doris Neumann
  • METHOD FOR THE PURIFICATION OF BIPHEPHOS
    Publication number: 20130317246
    Abstract: The invention relates to a process for the purification of 6,6?-[(3,3?-di-tert-butyl-5,5?-dimethoxy-1,1?-biphenyl-2,2?diyl)bis(oxy)]bis(dibenzo[d,f][1,3,2]dioxaphosphepin), abbreviation: biphephos (see formula 1).
    Type: Application
    Filed: December 22, 2011
    Publication date: November 28, 2013
    Applicant: Evonik Oxeno GmbH
    Inventors: Burkard Kreidler, Dirk Fridag, Bernhard Schemmer, Bjoern Wechsler, Andrea Christiansen, Doris Neumann
  • USE OF SUPPORTED IONIC LIQUID PHASE (SILP) CATALYST SYSTEMS IN THE HYDROFORMYLATION OF OLEFIN-CONTAINING MIXTURES TO ALDEHYDE MIXTURES WITH A HIGH CONTENT OF ALDEHYDES UNBRANCHED IN THE 2 POSITION
    Publication number: 20130289313
    Abstract: The present invention provides a composition comprising: a) an inert porous support material, b) an ionic liquid, c) a metal selected from group 9 of the Periodic Table of the Elements, d) a phosphorus-containing organic ligand, e) at least one organic amine. The present invention further provides a process for hydroformylating olefin-containing hydrocarbon mixtures to aldehydes with addition of the inventive composition as a catalytically active composition, wherein: a) the water content of the olefin-containing hydrocarbon mixture is adjusted to not more than 20 ppm, b) the content of polyunsaturated compounds in the olefin-containing hydrocarbon mixture is adjusted to not more than 3000 ppm, c) a molar ratio of organic amines according to claims 10-13 to phosphorus-containing organic ligands according to claims 8-9 of at least 4:1 is established, d) a molar ratio of phosphorus-containing organic ligands according to claims 8-9 to rhodium of at least 10:1 is established.
    Type: Application
    Filed: September 27, 2011
    Publication date: October 31, 2013
    Applicant: EVONIK OXENO GmbH
    Inventors: Robert Franke, Nicole Brausch, Dirk Fridag, Andrea Christiansen, Marc Becker, Peter Wasserscheid, Marco Haumann, Michael Jakuttis, Sebastian Werner, Andreas Schoenweiz
  • POLYHEDRAL OLIGOMERIC SILSESQUIOXANE (POSS) BONDED LIGANDS AND THE USE THEREOF
    Publication number: 20130158282
    Abstract: The present invention relates to POSS-modified ligands and to the use thereof in catalytically effective compositions in hydroformylation.
    Type: Application
    Filed: March 1, 2011
    Publication date: June 20, 2013
    Applicant: Evonik Oxeno GmbH
    Inventors: Andrea Christiansen, Robert Franke, Dieter Hess, Dirk Fridag, Dieter Vogt, Christian Mueller, Michele Janssen
  • ORGANOPHOSPHORUS COMPOUNDS BASED ON TETRAPHENOL (TP)-SUBSTITUTED STRUCTURES
    Publication number: 20120197025
    Abstract: The invention relates to the synthesis of tetraphenol-substituted structures, in particular meta-substituted xylenes. Said tetraphenol-type structures are reacted to obtain organic phosphorus compounds, in particular organophosphites. The invention further relates to the production of catalytically active compositions which contain transition metals in addition to the aforementioned organic phosphorus compounds. According to another subject matter of the invention, said catalytically active compositions are used in chemical reactions with small molecules, e.g. HCN, CO, hydrogen, and amines.
    Type: Application
    Filed: August 26, 2010
    Publication date: August 2, 2012
    Applicant: Evonik Oxeno GmbH
    Inventors: Andrea Christiansen, Robert Franke, Dirk Fridag, Dieter Hess, Burkard Kreidler, Dieter Vogt, Laura Bini, Michele Janssen, Bart Hamers