Patents by Inventor Hendrik W. Post

Hendrik W. Post 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 removal of dimethyl ether in methyl chloride
    Patent number: 4794204
    Abstract: A process is described for the removal of dimethyl ether in methyl chloride by catalytic cleavage by means of hydrogen chloride. Dimethyl ether is present as an impurity in crude methyl chloride produced by the catalytic esterification of methanol. The crude methyl chloride is cooled so that water and hydrogen chloride separate out. Gaseous hydrogen chloride is then added to the methyl chloride in an amount corresponding to at least twice the molar amount of dimethyl ether, and the gaseous mixture is passed over a methanol esterification contact catalyst at an elevated temperature.
    Type: Grant
    Filed: June 11, 1987
    Date of Patent: December 27, 1988
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Hendrik W. Post, Helmold von Plessen, Wilhelm Lendle
  • Process for the manufacture of methyl chloride
    Patent number: 4465880
    Abstract: Methyl chloride is manufactured from methanol and hydrogen chloride in the gaseous phase in the presence of an aluminum oxide catalyst. The reaction is carried out in the presence of from 1 to 80 liters of oxygen per kg of methanol.
    Type: Grant
    Filed: April 24, 1981
    Date of Patent: August 14, 1984
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Wolfgang Grunbein, Wilhelm Lendle, Hendrik W. Post, Heinz Richter, Manfred Rossberg
  • Purification of crude monochloromethane gas
    Patent number: 4192821
    Abstract: Crude monochloromethane is freed from dimethylether by a washing with aqueous hydrochloric acid.
    Type: Grant
    Filed: December 20, 1977
    Date of Patent: March 11, 1980
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Reinhold Graser, Wilhelm Lendle, Hendrik W. Post