Patents by Inventor Jorg Talbiersky

Jorg Talbiersky 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).

  • Selective production of o-alkylphenols
    Patent number: 6846962
    Abstract: In a method for the production of o-alkyl phenols by conversion of phenol with an alkanol at elevated temperature in the gas phase in the presence of a metal catalyst, the conversion takes place in at least two stages wherein the alkanol/phenol molar ratio in each reaction stage is set to a value of approximately ?0.4; a clear increase in the selectivity for the o-alkyl phenol is obtained.
    Type: Grant
    Filed: November 15, 2002
    Date of Patent: January 25, 2005
    Assignee: Rutgers Chemicals AG
    Inventors: Jörg Talbiersky, Edgar Fuhrmann, Wolfgang Brüggemann
  • Selective production of o-alkylphenols
    Publication number: 20040158104
    Abstract: In a method for the production of o-alkyl phenols by conversion of phenol with an alkanol at elevated temperature in the gas phase in the presence of a metal catalyst, the conversion takes place in at least two stages wherein the alkanol/phenol molar ratio in each reaction stage is set to a value of approximately ≦0.4; a clear increase in the selectivity for the o-alkyl phenol is obtained.
    Type: Application
    Filed: December 11, 2003
    Publication date: August 12, 2004
    Inventors: Jorg Talbiersky, Edgar Fuhrmann, Wolfgang Bruggemann
  • Method for production of aryl alkyl ethers
    Patent number: 6624334
    Abstract: Aryl alkyl ethers can be produced by the reaction of hydroxyaromatics with an alcohol in the presence of a catalyst. This process achieves higher yields of aryl alkyl ethers and the formation of ring-alkylated products and dialkyl ethers is markedly reduced.
    Type: Grant
    Filed: April 8, 2002
    Date of Patent: September 23, 2003
    Assignees: Haarmann & Reimer GmbH, Bayer Aktiengesellschaft
    Inventors: Efim Biller, Edgar Fuhrmann, Detlef Hagena, Heinz Günter Janneck, Jörg Talbiersky, Lutz Walther
  • Method for removing metal ions from cresol mixtures
    Patent number: 6258985
    Abstract: A method for removing of metal ions from cresol or from mixtures of aromatic compounds containing cresol is disclosed, wherein the water content in the cresol mixture is adjusted to at least about 0.5 per cent by weight by the addition of water and the water-and-cresol mixture is subsequently passed over an acid ion exchanger. As a result of this process a metal ion content of less than 20 ppb per metal ion is achieved.
    Type: Grant
    Filed: November 23, 1999
    Date of Patent: July 10, 2001
    Assignee: Rütgers VFT AG
    Inventors: Jörg Talbiersky, Edgar Fuhrmann, Wolfgang Brüggemann
  • Method of purifying quinaldine
    Patent number: 6020494
    Abstract: In a method of purifying quinaldine prepared from coal tar, a phenol, cresol and xylenol-type mononuclear aromatic compound is added to the quinaldine fraction, said aromatic compound is crystallized out forming an adduct with quinaldine and the quinaldine/mononuclear aromatic adduct is then separated, whereby, before the mononuclear aromatic compound is added, 5% to 20% by weight of a mixture of aromatic compounds or toluene, in relation to the mass of the quinaldine fraction, is added to the quinaldine fraction.
    Type: Grant
    Filed: June 25, 1998
    Date of Patent: February 1, 2000
    Assignee: Rutgers VFT AG
    Inventors: Jorg Talbiersky, Edgar Fuhrmann, Heinz-Gunter Janneck
  • Process for preparing 3,5-dimethylphenol
    Patent number: 5969196
    Abstract: For the preparation of 3,5-dimethylphenol by catalytic demethylation of isophorone in the gas phase in the presence of a metal or a metal alloy as catalyst, an isophorone-containing process stream is guided through reaction zones that contain said catalyst, whereby the reactivity of the catalyst varies in the reaction zones and the process stream between these reaction zones is thermostated in zones that do nor contain any catalyst, whereby the residual isophorone is greatly reduced, and the yield of 3,5-dimethylphenol is increased.
    Type: Grant
    Filed: April 27, 1998
    Date of Patent: October 19, 1999
    Assignee: Rutgers VFT AG
    Inventors: Wolfgang Bergins, Jorg Talbiersky
  • Novel purification process
    Patent number: 4992599
    Abstract: Crude phenol and also individual phenol fractions from tars or the hydrogenation of coal are purified from contaminating organic bases and sulfur compounds by treating the phenols with phthalic acid anhydride and optionally a quinone and distillation.
    Type: Grant
    Filed: December 13, 1989
    Date of Patent: February 12, 1991
    Assignee: Rutgerswerke AG
    Inventors: Jorg Talbiersky, Bernhard Wefringhaus, Konrad Stolzenberg, Wolfgang Bergins