Patents by Inventor Marinus Pieter van Dijk

Marinus Pieter van Dijk 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).

  • Coupled styrenic block copolymers and process for preparing same
    Patent number: 7009000
    Abstract: Disclosed is an improvement to a process for preparing coupled styrenic block copolymers wherein adding from about 0.01 to about 1.5 equivalents of a metal alkyl compound per equivalent of living polymer chain ends to the cement, during or after polymerization, improves coupling efficiencies. The resultant radial styrenic block copolymers have reduced amounts of 5+ arm oligomers which can be very desirable is certain applications, such as the modification of bitumen.
    Type: Grant
    Filed: July 11, 2003
    Date of Patent: March 7, 2006
    Assignee: Kraton Polymers U.S. LLC
    Inventors: Robert Bening, Harvey Atwood, Marinus Pieter van Dijk, Adriana Maria Petronella Ros, Barry Moore, Carl Willis, Nikolaas Jan van Dijk
  • Coupled styrenic block copolymers and process for preparing same
    Publication number: 20040054090
    Abstract: Disclosed is an improvement to a process for preparing coupled styrenic block copolymers wherein adding from about 0.01 to about 1.5 equivalents of a metal alkyl compound per equivalent of living polymer chain ends to the cement, during or after polymerization, improves coupling efficiencies. The resultant radial styrenic block copolymers have reduced amounts of 5+ arm oligomers which can be very desirable is certain applications, such as the modification of bitumen.
    Type: Application
    Filed: July 11, 2003
    Publication date: March 18, 2004
    Applicant: KRATON Polymers U.S. LLC
    Inventors: Robert Bening, Harvey Atwood, Marinus Pieter van Dijk, Adriana Maria Petronella Ros, Barry Moore, Carl Willis, Nikolaas Jan van Dijk