Patents Assigned to Oxea Deutschland GmbH
  • Patent number: 9249278
    Abstract: Compositions containing an aqueous dispersion of selected polymers and selected polyaldehydes as crosslinking agents are described. Adhesives having very high resistance to boiling water can be produced from these formulations.
    Type: Grant
    Filed: February 13, 2008
    Date of Patent: February 2, 2016
    Assignees: Celanese Emulsions Gmbh, Oxea Deutschland GmbH
    Inventors: Christoph Balzarek, Martin Jakob
  • Patent number: 7799945
    Abstract: A catalytic process for preparing aliphatic straight-chain and ?-alkyl-branched carboxylic acids of 5 to 13 carbon atoms by catalytic oxidation of the corresponding aldehydes by means of oxygen or oxygen-containing gas mixtures in the liquid phase in the presence of a catalyst system contains alkali metal carboxylates or alkaline earth metal carboxylates or a mixture thereof in an amount, calculated as alkali metal or alkaline earth metal, of 0.5 mmol to 15 mmol per mol of aldehyde used and also metals of groups 4 to 12 of the Periodic Table of the Elements, cerium or lanthanum in amounts of not more than 5 ppm, based on the aldehyde used, or compounds of such metals, with the catalyst system being the reaction product from an aldehyde oxidation reaction.
    Type: Grant
    Filed: April 18, 2007
    Date of Patent: September 21, 2010
    Assignee: Oxea Deutschland GmbH
    Inventor: Helmut Springer
  • Patent number: 7358385
    Abstract: The compound, bicyclo[4.3.0]nonane-3(4),7(8)-dicarboxylic acid and to a process for its preparation, wherein bicyclo[4.3.0]nona-3,7-diene is reacted with synthesis gas in an homogeneous organic phase in the presence of transition metal compounds of Group VIII of the Periodic Table containing complex-bound organophosphorus compounds, and of excess organophosphorus compound, at temperatures of 70 to 160° C. and pressures of 5 to 35 MPa, and the 3(4),7(8)-bisformylbicyclo[4.3.0]nonane thus obtained is oxidized, or is first hydrogenated to 3(4),7(8)-dihydroxymethylbicyclo[4.3.0]nonane and the diol thus obtained is reacted in an alkali melt.
    Type: Grant
    Filed: January 25, 2007
    Date of Patent: April 15, 2008
    Assignee: Oxea Deutschland GmbH
    Inventors: Helmut Springer, Paolo Bavaj
  • Patent number: 7317128
    Abstract: A process for preparing 3(4),8(9)-bis(aminomethyl)tricycle-[5.2.1.02,6]decane by hydroformylating dicyclopentadiene with subsequent reductive amination wherein the hydroformylation of dicyclopentadiene is carried out in two stages, and, in a first hydroformylation stage, the reaction is effected in a heterogeneous reaction system using an aqueous solution of transition metal compounds, containing water-soluble organic phosphorus (III) compounds in complex-bound form, of group VIII of the Periodic Table to give 8(9)-formyltricyclo[5.2.1.02,6]dec-3-ene, and, in a second hydroformylation stage, the thus obtained 8(9)-formyltricyclo[5.2.1.02,6]dec-3-ene is converted, in a homogeneous organic phase in the presence of transition metal compounds of group VIII of the Periodic Table of the Elements to 3(4),8(9)-bisformyltricyclo[5.2.1.
    Type: Grant
    Filed: October 18, 2004
    Date of Patent: January 8, 2008
    Assignee: Oxea Deutschland GmbH
    Inventors: Peter Lappe, Helmut Springer, Rainer Lukas
  • Patent number: 7301057
    Abstract: The present invention relates to a process for preparing 3(4),8(9)-dihydroxymethyltricyclo[5.2.102.6]decane by hydrogenating the hyd roformylation products of d icyclopentad lene. The process comprises carrying out the hydrogenation in the presence of water, optionally after addition of water.
    Type: Grant
    Filed: May 25, 2005
    Date of Patent: November 27, 2007
    Assignee: Oxea Deutschland GmbH
    Inventors: Wolfgang Dukat, Edgar Storm, Klaus Schmid