Patents by Inventor Kurt Feldner

Kurt Feldner 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).

  • Process for the preparation of alkyl halogenosilanes
    Patent number: 5068385
    Abstract: A process for the preparation of alkyl halogenosilanes comprising reacting silicon with alkyl halide in the presence of a copper catalyst and promoter substances and phosphorous and phosphorous compounds in combination with indium or indium compounds or aluminum or aluminum compounds or a mixture of aluminum or aluminum compounds and indium or indium compounds.
    Type: Grant
    Filed: August 20, 1990
    Date of Patent: November 26, 1991
    Assignee: Bayer Aktiengesellschaft
    Inventors: Bruno Degen, Kurt Feldner, Elke Licht, Gebhard Wagner
  • Process for the preparation of alkylhalogenosilanes
    Patent number: 5059706
    Abstract: A process for the preparation of alkylhalogenosilanes by reaction of silicon with an alkyl halide in the presence of a copper catalyst and promoter substances, the improvement wherein gaseous phosphorus compounds are admixed, as promotor substances, with the stream of alkyl halide.
    Type: Grant
    Filed: March 21, 1990
    Date of Patent: October 22, 1991
    Assignee: Bayer Aktiengesellschaft
    Inventors: Bruno Degen, Kurt Feldner, Hans-Joachim Kaiser, Manfred Schulze
  • Process for the production of organochlorosilanes
    Patent number: 5015751
    Abstract: In the production of organochlorosilanes by reaction of silicon with an alkyl- and/or arylchloride in the presence of a copper catalyst and, optionally, promoter elements, the improvement wherein the silicon has been atomized with an inert gas, has a particle size of less than about 1000 .mu.m, by weight has an Al content of about 0.05 to 0.38%, a Ca content of about 0.02 to 0.2% and an Fe content of about 0.25 to 0.55%.
    Type: Grant
    Filed: November 20, 1989
    Date of Patent: May 14, 1991
    Assignee: Bayer Aktiengesellschaft
    Inventors: Kurt Feldner, Bruno Degen, Gebhard Wagner, Manfred Schulze
  • Process for working up hydrolysis residues from the synthesis of organochlorosilanes
    Patent number: 4961861
    Abstract: A process is disclosed for working up the high-boiling, solids-containing residues obtained in the synthesis of organochlorosilanes which are hydrolyzed and then optionally oxidized, with oxygen-containing gases, comprising adding during hydrolysis and/or oxidation a surface-active substance which hydrophilicizes the surface of the solids.
    Type: Grant
    Filed: August 16, 1989
    Date of Patent: October 9, 1990
    Assignee: Bayer Aktiengesellschaft
    Inventors: Bruno Degen, Kurt Feldner
  • Process for working up hydrolysis residues from the synthesis of organochlorosilanes
    Patent number: 4960523
    Abstract: A process is disclosed for working up the high-boiling, solids-containing residues obtained in the synthesis of organochlorosilanes which are hydrolyzed and then optionally oxidized, comprising adding during hydrolysis and/or oxidation a surface-active agent which hydrophilicizes the surface of the solids.
    Type: Grant
    Filed: August 16, 1989
    Date of Patent: October 2, 1990
    Assignee: Bayer Aktiengesellschaft
    Inventors: Bruno Degen, Kurt Feldner
  • Process for the production of organosilanes
    Patent number: 4895969
    Abstract: In the production of an organochlorosilane by reaction of silicon or a silicon alloy with an alkyl or aryl chloride in the presence of a copper catalyst, the improvement which comprises employing the silicon or alloy in atomized form.
    Type: Grant
    Filed: June 22, 1989
    Date of Patent: January 23, 1990
    Assignee: Bayer Aktiengesellschaft
    Inventors: Kurt Feldner, Bruno Degen, Gebhard Wagner, Manfred Schulze
  • Process for the treatment of hydrolysis residues from organo chlorosilane synthesis
    Patent number: 4758352
    Abstract: A process is provided for the treatment of high-boiling, solids- and copper-containing residues produced during organochlorosilane synthesis. The process comprises hydrolyzing, oxidizing the hydrolyzed residues with a free oxygen-containing gas and separating-out a copper-containing solution.
    Type: Grant
    Filed: June 11, 1986
    Date of Patent: July 19, 1988
    Assignee: Bayer Aktiengesellschaft
    Inventors: Kurt Feldner, Otto Horak
  • Process for the preparation of dimethyldichlorosilane
    Patent number: 4552973
    Abstract: A process for the preparation of dimethyldichlorosilane from the low-boiling and high-boiling by-products of the direct synthesis of methylchlorosilane, comprising reacting methyltrichlorosilane simultaneously with the low-boiling components having a high content of methyl groups and with the high-boiling non-cleavable components, in the presence of a catalyst, at a temperature between about 250.degree. C. and 400.degree. C. and under a pressure of up to 100 bar.
    Type: Grant
    Filed: March 19, 1985
    Date of Patent: November 12, 1985
    Assignee: Bayer Aktiengesellschaft
    Inventors: Kurt Feldner, Wolfgang Grape