Patents by Inventor Claus-Dieter Mengler

Claus-Dieter Mengler 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).

  • Supported silver catalysts mixed with promoter metal compounds for the production of ethylene oxide
    Patent number: 4409394
    Abstract: The activity and the service life of supported silver catalysts used in the preparation of ethylene oxide by the catalytic vapor phase oxidation of ethylene with molecular oxygen are extended by using mixtures of:(a) supported silver catalysts and promoter metal compounds;(b) supported silver catalysts and supported promoter metal compounds;(c) promoter metal compound treated supported silver catalysts and promoter metal compounds; or(d) promoter metal compound treated supported silver catalysts and supported promoter metal compounds.Promoter metal compounds containing about 0.001-0.05% by weight rubidium, about 0.01-0.20% by weight potassium, about 0.001-0.5% by weight cesium or about 0.01-0.25% by weight barium, based on the total weight of catalyst, are suitable.
    Type: Grant
    Filed: September 18, 1981
    Date of Patent: October 11, 1983
    Assignee: Chemische Werke Huls AG
    Inventors: Erwin Vangermain, Claus-Dieter Mengler, Rainer Elm, Horst Ueberschaer, Wilhelm Brauckmann
  • Process for activating or reactivating ethylene oxide silver substrate catalysts
    Patent number: 4376718
    Abstract: Process for activating or reactivating silver substrate catalysts having promoter metals used in the production of ethylene oxide by oxidizing ethylene with oxygen or with gases containing oxygen.At least part of the mixture of reaction gases is made to pass at least in part through a bed arranged before the catalyst zone, this bed containing uniformly distributed compounds of the promoter metals.
    Type: Grant
    Filed: March 31, 1980
    Date of Patent: March 15, 1983
    Assignee: Chemische Werke Huls A.G.
    Inventors: Erwin Vangermain, Claus-Dieter Mengler
  • Supported silver catalysts mixed with promoter metal compounds for the production of ethylene oxide
    Patent number: 4310442
    Abstract: The activity and the service life of supported silver catalysts used in the preparation of ethylene oxide by the catalytic vapor phase oxidation of ethylene with molecular oxygen are extended by using mixtures of:(a) supported silver catalysts and promoter metal compounds;(b) supported silver catalysts and supported promoter metal compounds;(c) promoter metal compound treated supported silver catalysts and promoter metal compounds; or(d) promoter metal compound treated supported silver catalysts and supported promoter metal compounds.Promoter metal compounds containing about 0.001-0.05% by weight rubidium, about 0.01-0.20% by weight potassium, about 0.001-0.5% by weight cesium or about 0.01-0.25% by weight barium, based on the total weight of catalyst, are suitable.
    Type: Grant
    Filed: June 24, 1980
    Date of Patent: January 12, 1982
    Assignee: Chemische Werke Huls AG
    Inventors: Erwin Vangermain, Claus-Dieter Mengler, Rainer Elm, Horst Ueberschaer, Wilhelm Brauckmann