Patents by Inventor John Boettger

John Boettger 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).

  • Very low melt viscosity resin
    Patent number: 6855777
    Abstract: A process is provided for the production of a very low melt viscosity (high melt flow index) polymer resin, suitable for use in meltblown processing. According to the process of the current invention, a high melt viscosity (low melt flow index) resin is subjected to post-reactor molecular weight alteration by extrusion with a chemical prodegradant. The process produces a very low melt viscosity resin that can be used in meltblown processing without further treatment to reduce the average molecular weight of the resin. Further, the very low melt viscosity resins produced according to the process of the current invention contain very little or no residual prodegradant.
    Type: Grant
    Filed: August 22, 2002
    Date of Patent: February 15, 2005
    Assignee: Sunoco, Inc. (R&M)
    Inventors: Kimberly M. McLoughlin, Edwin B. Townsend, IV, John A. Boettger, Gary R. Tarr, Theodore Gabor
  • Very low melt viscosity resin
    Publication number: 20040039130
    Abstract: A process is provided for the production of a very low melt viscosity (high melt flow index) polymer resin, suitable for use in meltblown processing. According to the process of the current invention, a high melt viscosity (low melt flow index) resin is subjected to post-reactor molecular weight alteration by extrusion with a chemical prodegradant. The process produces a very low melt viscosity resin that can be used in meltblown processing without further treatment to reduce the average molecular weight of the resin. Further, the very low melt viscosity resins produced according to the process of the current invention contain very little or no residual prodegradant.
    Type: Application
    Filed: August 22, 2002
    Publication date: February 26, 2004
    Inventors: Kimberly M. McLoughlin, Edwin B. Townsend, John A. Boettger, Gary R. Tarr, Theodore Gabor