Patents by Inventor Richard Samuel STEEVENSZ

Richard Samuel STEEVENSZ 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).

  • Processes for preparing epoxidized polymers
    Patent number: 9850324
    Abstract: The present invention is directed to a process for preparing epoxidized polymers. The process comprises reacting an unsaturated polymer with hydrogen peroxide in the presence of a polymer support having a sulfonic acid group. The present invention is also directed to an epoxidized halogenated-polymer which comprises repeating units derived from at least one isoolefin monomer and repeating units derived from at least one diolefinic monomer, and one or more allylic halide groups and one or more oxirane functional groups in the polymer backbone.
    Type: Grant
    Filed: December 11, 2013
    Date of Patent: December 26, 2017
    Assignee: LANXESS, Inc.
    Inventors: Paul Nguyen, Gregory J. E. Davidson, Richard Samuel Steevensz
  • PROCESSES FOR PREPARING EPOXIDIZED POLYMERS
    Publication number: 20150315299
    Abstract: The present invention is directed to a process for preparing epoxidized polymers. The process comprises reacting an unsaturated polymer with hydrogen peroxide in the presence of a polymer support having a sulfonic acid group. The present invention is also directed to an epoxidized halogenated-polymer which comprises repeating units derived from at least one isoolefin monomer and repeating units derived from at least one diolefinic monomer, and one or more allylic halide groups and one or more oxirane functional groups in the polymer backbone.
    Type: Application
    Filed: December 11, 2013
    Publication date: November 5, 2015
    Inventors: Paul NGUYEN, Gregory J.,E. DAVIDSON, Richard Samuel STEEVENSZ