Patents by Inventor Rhutesh Shah

Rhutesh Shah 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 producing high propylene content PEDM using tetrahydroindacenyl catalyst systems
    Patent number: 11597782
    Abstract: The present disclosure provides methods for producing an olefin polymer by contacting a C3-C40 olefin, ethylene and a diene with a catalyst system including an activator and a metallocene catalyst compound comprising a substituted or unsubstituted indacenyl group and obtaining a C3-C40 olefin-ethylene-diene terpolymer typically comprising from 1 to 35 mol % of ethylene, from 98.9 to 65 mol % C3-C40 olefin, and, optionally, from 0.1 to 10 mol % diene. Preferably, a propylene-ethylene-ethylidene norbornene is obtained.
    Type: Grant
    Filed: December 14, 2020
    Date of Patent: March 7, 2023
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Jo Ann M. Canich, John R. Hagadorn, Rhutesh Shah, Florin Barsan, Sarah J. Mattler
  • Processes for Producing High Propylene Content PEDM using Tetrahydroindacenyl Catalyst Systems
    Publication number: 20210122842
    Abstract: The present disclosure provides methods for producing an olefin polymer by contacting a C3-C40 olefin, ethylene and a diene with a catalyst system including an activator and a metallocene catalyst compound comprising a substituted or unsubstituted indacenyl group and obtaining a C3-C40 olefin-ethylene-diene terpolymer typically comprising from 1 to 35 mol % of ethylene, from 98.9 to 65 mol % C3-C40 olefin, and, optionally, from 0.1 to 10 mol % diene. Preferably, a propylene-ethylene-ethylidene norbornene is obtained.
    Type: Application
    Filed: December 14, 2020
    Publication date: April 29, 2021
    Inventors: Jo Ann M. Canich, John R. Hagadorn, Rhutesh Shah, Florin Barsan, Sarah J. Mattler