Patents by Inventor Phillip E. Bowles

Phillip E. Bowles 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 for the production of low molecular weight polyoxyalkylene polyols
    Patent number: 9879114
    Abstract: This invention relates to a semi-batch process for producing low molecular weight polyoxyalkylene polyols. These polyoxyalkylene polyols are characterized by hydroxyl numbers of from 200 to 500. In accordance with the invention, the first alkylene oxide block used to activate the DMC catalyst comprises from 50% to 100% by weight of propylene oxide and from 0% to 50% by weight of ethylene oxide; and the second alkylene oxide block comprises from 50% to 100% by weight of propylene oxide and from 0% to 50% by weight of ethylene oxide. A continuously added starter is present. Optionally, a third alkylene oxide block can be added. The addition of the second alkylene oxide block and of the third alkylene oxide block when present is completed with a space time yield of greater than or equal to 250 kg/m3/hr.
    Type: Grant
    Filed: December 22, 2015
    Date of Patent: January 30, 2018
    Assignee: Covestro LLC
    Inventors: Jack R. Reese, Phillip E. Bowles, Edward P. Browne
  • PROCESS FOR THE PRODUCTION OF LOW MOLECULAR WEIGHT POLYOXYALKYLENE POLYOLS
    Publication number: 20170174834
    Abstract: This invention relates to a semi-batch process for producing low molecular weight polyoxyalkylene polyols. These polyoxyalkylene polyols are characterized by hydroxyl numbers of from 200 to 500. In accordance with the invention, the first alkylene oxide block used to activate the DMC catalyst comprises from 50% to 100% by weight of propylene oxide and from 0% to 50% by weight of ethylene oxide; and the second alkylene oxide block comprises from 50% to 100% by weight of propylene oxide and from 0% to 50% by weight of ethylene oxide. A continuously added starter is present. Optionally, a third alkylene oxide block can be added. The addition of the second alkylene oxide block and of the third alkylene oxide block when present is completed with a space time yield of greater than or equal to 250 kg/m3/hr.
    Type: Application
    Filed: December 22, 2015
    Publication date: June 22, 2017
    Inventors: Jack R. Reese, Phillip E. Bowles, Edward P. Browne