Patents by Inventor Andreas Kreipl

Andreas Kreipl 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).

  • Patent number: 9011640
    Abstract: The invention relates to a method for obtaining cellulose by separating lignin from a biomass comprising lignocellulose in the form of plants or plant parts, wherein the biomass comprising lignocellulose is solubilized in a boiler in an alkaline medium comprising alkanol amine, and dissolved lignin is separated from the resulting raw cellulose. Said method is characterized in that the biomass comprising lignocellulose is not from a wood source, and is solubilized at a temperature of less than approximately 170° C. in a solubilizing agent based on alkanol amine and water, wherein the weight ratio of alkanol amine to water is set to 80:20 to 20:80, and raw cellulose thus produced is separated from the waste lye using a typical method. Said method is particularly advantageous for obtaining cellulose from annual plants, particularly wheat straw. The method is advantageously improved in that the solubilization takes place in the presence of a catalyst, particularly of anthrachinon.
    Type: Grant
    Filed: February 25, 2010
    Date of Patent: April 21, 2015
    Assignee: Zylum Beteiligungsgesellschaft mbH & Co Patente II KG
    Inventors: Rudolf Patt, Andreas Kreipl
  • Patent number: 8883882
    Abstract: The invention relates to a non-aqueous dispersion of organic polymer particles in a reactive diluent. Said non-aqueous dispersion can be obtained in that at least one monomer is polymerized in the reactive diluent, forming the organic polymer particles, wherein the reactive diluent does not participate in said polymerization due to the orthogonal reactivity thereof relative to the monomers, but comprises a functionality allowing later targeted polymerization. Depending on the organic polymer particles or reactive diluents used, the non-aqueous dispersion can be used in multifaceted applications having a wide range of application profiles. In order to produce said non-aqueous dispersion, polymerization of at least one monomer in a stirred tank reactor in the presence of a reactive diluent is particularly suitable, wherein the conversion is performed at a stirring speed of at least 2 m/s, wherein the ratio of the stirrer diameter to the vessel diameter is set to 0.3-0.
    Type: Grant
    Filed: March 31, 2010
    Date of Patent: November 11, 2014
    Assignee: Dritte Patentportfolio Beteiligungygesellschaft MbH & Co. KG
    Inventors: Nicolas Boge, Torsten Stachelhaus, Andreas Kreipl, Dalibor Vukadlnovic-Tenter, Klaus-Uwe Koch, Daniel Junghans, Angela Kaufmann, Nicole Jagielski, Judith Schmidt
  • Publication number: 20130053598
    Abstract: The invention relates to a method for producing a cross-coupling product of a benzenoid dizonium salt according to the general formula (I), wherein the groups R1, R2, R3, R4, and R5 represent hydrogen, halogen, an alkyl, alkenyl, aryl, alkoxy, aryloxy, nitro, cyano, hydroxy, acetyl, and/or diazo groups independently of each, and X represents BF4, Cl, F, SO3CH3, CO2CH3, PF6, ClO2CH3, or CIO4, comprising the following steps: (a) providing a benzenoid amide, which with the exception of the diazo function has the same substituents R1, R2, R3, R4, and R5 as the benzenoid diazonium salt of the general formula (I), and hydrolytically cleaving the amide to form an amine or providing a corresponding amine, (b) diazotizing the amine thus obtained or provided with a nitrite, and (c) subsequently reacting the benzenoid diazonium salt with a coupling partner in the presence of a catalyst to form a cross-coupling product, wherein the coupling parter is represented by the general formula (II), R6, R7, and R8 are the same or
    Type: Application
    Filed: April 22, 2010
    Publication date: February 28, 2013
    Applicant: ZYLUM BETEILIGUNGSGESELLSCHAFT MBH & CO. PATENTE II KG
    Inventors: Nicolas Boege, Andreas Kreipl, Bernd Schmidt, Frank Hoelter, René Berger
  • Publication number: 20120149832
    Abstract: The invention relates to a non-aqueous dispersion of organic polymer particles in a reactive diluent. Said non-aqueous dispersion can be obtained in that at least one monomer is polymerized in the reactive diluent, forming the organic polymer particles, wherein the reactive diluent does not participate in said polymerization due to the orthogonal reactivity thereof relative to the monomers, but comprises a functionality allowing later targeted polymerization. Depending on the organic polymer particles or reactive diluents used, the non-aqueous dispersion can be used in multifaceted applications having a wide range of application profiles. In order to produce said non-aqueous dispersion, polymerization of at least one monomer in a stirred tank reactor in the presence of a reactive diluent is particularly suitable, wherein the conversion is performed at a stirring speed of at least 2 m/s, wherein the ratio of the stirrer diameter to the vessel diameter is set to 0.3-0.
    Type: Application
    Filed: March 31, 2010
    Publication date: June 14, 2012
    Applicant: Drite Patentportfolio Betelligungsgesellschagt mbH
    Inventors: Nicolas Boge, Torsten Stachelhaus, Andreas Kreipl, Dalibor Vukadlnovic-Tenter, Klaus-Uwe Koch, Daniel Junghans, Angela Kaufmann, Nicole Jagielski, Judith Schmidt
  • Publication number: 20120142937
    Abstract: A process is provided for the preparation of aryl-heteroatom-bridged compounds by reacting a halogen-substituted aromatic compound with a trialkylsilyl-substituted heteroatom-containing organic compound.
    Type: Application
    Filed: March 16, 2010
    Publication date: June 7, 2012
    Applicant: Zylum Beteiligungsgesellschaft mbH & Co. Patente II KG
    Inventors: Andreas Kreipl, Nicolas Boege, Werner R. Thiel
  • Publication number: 20120132379
    Abstract: The invention relates to a method for obtaining cellulose by separating lignin from a biomass comprising lignocellulose in the form of plants or plant parts, wherein the biomass comprising lignocellulose is solubilized in a boiler in an alkaline medium comprising alkanol amine, and dissolved lignin is separated from the resulting raw cellulose. Said method is characterized in that the biomass comprising lignocellulose is not from a wood source, and is solubilized at a temperature of less than approximately 170° C. in a solubilizing agent based on alkanol amine and water, wherein the weight ratio of alkanol amine to water is set to 80:20 to 20:80, and raw cellulose thus produced is separated from the waste lye using a typical method. Said method is particularly advantageous for obtaining cellulose from annual plants, particularly wheat straw. The method is advantageously improved in that the solubilization takes place in the presence of a catalyst, particularly of anthrachinon.
    Type: Application
    Filed: February 25, 2010
    Publication date: May 31, 2012
    Applicant: Zylum Beteiligungsgesellschaft MBH & Co Patente II KG
    Inventors: Rudolf Patt, Andreas Kreipl