Patents by Inventor Johannes Cornelis Maria Van Der Arend

Johannes Cornelis Maria Van Der Arend 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).

  • Manufacturing process for high cis poly(butadiene)
    Patent number: 5691429
    Abstract: A process for the manufacture of linear, substantially gel free, high cis 1,4 poly(butadiene) comprising polymerization in the presence of (a) a catalyst comprising at least one cobalt compound, at least one organoaluminium compound, and water, and (b) a cycloalkane as main solvent component, and (c) at least one substituted benzene as polymerization regulator of the general formula ##STR1## wherein n is an integer in the range of from 3 to 5, and wherein each R represents a lower alkoxy group containing from 1 to 6 carbon atoms.
    Type: Grant
    Filed: October 17, 1996
    Date of Patent: November 25, 1997
    Assignee: Shell Oil Company
    Inventors: Johannes Cornelis Maria Van Der Arend, Marijke De Boer-Wildschut, Adriaan Albert Van Der Huizen, Maria Johanna Elisabeth Kersten