Patents by Inventor Coenraad H. Wilms

Coenraad H. Wilms 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).

  • Polymerization of CO/olefin with two distinct temperatures
    Patent number: 5095091
    Abstract: An improved process for the production of linear alternating polymers of carbon monoxide and at least one ethylenically unsaturated hydrocarbon in the presence of a reaction diluent and a catalyst composition formed from a palladium compound, the anion of a strong non-hydrohalogenic acid and a bidentate ligand of phosphorus, nitrogen or sulfur comprises conducting a first polymerization to produce a prepolymer and completing the polymerization at a lower temperature in the presence of sufficient prepolymer to constitute a substantial proportion of the polymerization mixture.
    Type: Grant
    Filed: October 18, 1990
    Date of Patent: March 10, 1992
    Assignee: Shell Oil Company
    Inventors: Johannes A. M. Van Broekhoven, Leonardus Petrus, Barend Mastenbroek, Coenraad H. Wilms
  • Catalyst system for olefin disproportionation
    Patent number: 4940827
    Abstract: 1. A catalyst system for olefin disproportionation containing molybdenum oxide supported on alumina prepared by a process which comprises:(a) comulling a gamma alumina providing agent with a sulfur-containing compound and/or a phosphorus-containing compound to produce a homogeneous mass,(b) extruding the mass and dividing it into small particles,(c) drying and calcining said particles at a temperature in the range of from about 400.degree. C. to about 800.degree. C.(d) subjecting said particles to at least one additional step comprising: (1) impregnating said particles with a solution of molybdenum oxide(s), (2) drying and (3) calcining said impregnated particles at a temperature in the range of from about 400.degree. C. to about 800.degree. C.
    Type: Grant
    Filed: November 16, 1989
    Date of Patent: July 10, 1990
    Assignee: Shell Oil Company
    Inventors: Frank J. Janssen, Coenraad H. Wilms, Donald Reinalda, Hendrik W. Bruijn
  • Catalyst system for olefin disproportionation
    Patent number: 4916102
    Abstract: A catalyst system for olefin disproportionation containing molebdenum oxide supported on alumina prepared by a process which comprises:(a) comulling a gamma alumina providing agent with a sulfur-containing compound and/or a phosphorus-containing compound to produce a homogeneous mass,(b) extruding the mass and dividing it into small particles,(c) drying and calcining said particles at a temperature in the range of from about 400.degree. C. to about 800.degree. C.(d) subjecting said particles to at least one additional step comprising: (1) impregnating said particles with a solution of molybdenum oxide(s), (2) drying and (3) calcining said impregnated particles at a temperature in the range of from about 400.degree. C. to about 800.degree. C.
    Type: Grant
    Filed: November 17, 1988
    Date of Patent: April 10, 1990
    Assignee: Shell Oil Company
    Inventors: Frank J. Janssen, Coenraad H. Wilms, Donald Reinalda, Hendrik W. Bruijn