Patents by Inventor Roger P. Volmer

Roger P. Volmer 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).

  • Process to produce strain hardened polypropylene
    Patent number: 11390731
    Abstract: A process comprising combining a polymerization catalyst with propylene at a polymerization temperature to produce polypropylene granules having an MFR1, wherein the temperature of the polypropylene granules is maintained at least at the polymerization temperature; mixing the polypropylene granules with an organic peroxide at a temperature of at least the polymerization temperature for a residence time of at least 40 seconds at a temperature below the melting point temperature of the polypropylene granules to form a polypropylene product having an MFR2, wherein MFR1 is greater than MFR2.
    Type: Grant
    Filed: May 23, 2018
    Date of Patent: July 19, 2022
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Edward F. Allen, Jr., George J. Pehlert, Roger P. Volmer, Alan J. Oshinski, Sasha P. Schmitt
  • Process to Produce Strain Hardened Polypropylene
    Publication number: 20200325318
    Abstract: A process comprising combining a polymerization catalyst with propylene at a polymerization temperature to produce polypropylene granules having an MFR1, wherein the temperature of the polypropylene granules is maintained at least at the polymerization temperature; mixing the polypropylene granules with an organic peroxide at a temperature of at least the polymerization temperature for a residence time of at least 40 seconds at a temperature below the melting point temperature of the polypropylene granules to form a polypropylene product having an MFR2, wherein MFR1 is greater than MFR2.
    Type: Application
    Filed: May 23, 2018
    Publication date: October 15, 2020
    Inventors: Edward F. Allen, JR., George J. Pehlert, Roger P. Volmer, Alan J. Oshinski, Sasha P. Schmitt