Patents by Inventor Herbert Joest

Herbert Joest 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).

  • Carrier-supported catalyst and process for making it
    Patent number: 4308175
    Abstract: The invention relates to a carrier-supported catalyst comprising oxides of chromium and tungsten and at least one of the oxides of molybdenum and potassium in the atomic ratio of Cr.sub.1 W.sub.0.1-0.5 Mo.sub.0-0.05 K.sub.0-0.5 on a porous carrier material, and to a process for making it.
    Type: Grant
    Filed: November 13, 1979
    Date of Patent: December 29, 1981
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Heinz Erpenbach, Klaus Gehrmann, Herbert Joest
  • Continuous production of 2-ethyl-hexyl acrylate free from dioctylether
    Patent number: 4280009
    Abstract: 2-ethyl-hexylacrylate free from dioctylether is produced continuously by reacting acrylic acid and 2-ethyl-hexanol-(1) in a molar ratio of 1:1 to 1:2 at 85.degree. to 140.degree. C. in the presence of an acid catalyst.
    Type: Grant
    Filed: August 14, 1979
    Date of Patent: July 21, 1981
    Inventors: Heinz Erpenbach, Klaus Guhrmann, Herbert Joest
  • Carrier-supported catalyst and process for making it
    Patent number: 4260520
    Abstract: The invention relates to a carrier-supported catalyst comprising oxides of cobalt and phosphorus and at least one of the oxides of molybdenum and potassium in the atomic ratio of Co.sub.1 P.sub.1-2 Mo.sub.0-0.05 K.sub.0-0.5 on a porous carrier material, and to a process for making it.
    Type: Grant
    Filed: November 13, 1979
    Date of Patent: April 7, 1981
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Heinz Erpenbach, Klaus Gehrmann, Herbert Joest
  • Continuous production of n-butylacrylate free from dibutylether
    Patent number: 4012439
    Abstract: N-Butylacrylate is produced by reacting acrylic acid with n-butanol in liquid phase in contact with an acid cation exchanger as a catalyst.To this end, the acrylic acid and butanol are reacted in a molar ratio from 1:1 to 1:2.5, at 80.degree. to 130.degree. C, under a pressure from 3 to 15 atmospheres gauge, and for 20 - 90 minutes.
    Type: Grant
    Filed: October 14, 1975
    Date of Patent: March 15, 1977
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Heinz Erpenbach, Klaus Gehrmann, Herbert Joest, Peter Zerres