Patents by Inventor Alfred E. Vigil

Alfred E. Vigil 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).

  • Low density polyethylene with low dissipation factor and process for producing same
    Patent number: 8912297
    Abstract: The present disclosure provides a process for producing low density polyethylene with a dissipation factor less than or equal to 1.48×10?4 radian at 2.47 GHz. The process includes free radical high pressure polymerization of ethylene and separation of the unreacted species from the resultant polyethylene to form a recycle stream. The process further includes purging dissipative components from the recycle stream. The purged recycle stream is then introduced into the polymerization reactor.
    Type: Grant
    Filed: March 8, 2012
    Date of Patent: December 16, 2014
    Assignee: Dow Global Technologies LLC
    Inventors: Anny Flory, Michael L. Smith, Chester J. Kmiec, Robert F. Eaton, Alfred E. Vigil
  • Low Density Polyethylene with Low Dissipation Factor and Process for Producing Same
    Publication number: 20140187730
    Abstract: The present disclosure provides a process for producing low density polyethylene with a dissipation factor less than or equal to 1.48×10?4 radian at 2.47 GHz. The process includes free radical high pressure polymerization of ethylene and separation of the unreacted species from the resultant polyethylene to form a recycle stream. The process further includes purging dissipative components from the recycle stream. The purged recycle stream is then introduced into the polymerization reactor.
    Type: Application
    Filed: March 8, 2012
    Publication date: July 3, 2014
    Inventors: Anny Flory, Michael L. Smith, Chester J. Kmiec, Robert F. Eaton, Alfred E. Vigil
  • PROCESSES TO PREPARE ETHYLENE-BASED POLYMER COMPOSITIONS
    Publication number: 20130253126
    Abstract: The invention provides a process to form an ethylene-based polymer composition, the process comprising at least the following: Step 1: polymerizing a first ethylene-based polymer in the presence of at least one molecular catalyst and a hydrocarbon chain transfer agent, and at a polymerization pressure of at least 14,000 psi; Step 2: polymerizing a second ethylene-based polymer.
    Type: Application
    Filed: November 21, 2011
    Publication date: September 26, 2013
    Applicant: Dow Global Technologies LLC
    Inventors: Sean W. Ewart, Sarat Munjal, Alfred E. Vigil, Teresa P. Karjala, Mehmet Demirors
  • PROCESS TO MAKE LONG CHAIN BRANCHED (LCB), BLOCK, OR INTERCONNECTED COPOLYMERS OF ETHYLENE
    Publication number: 20100311927
    Abstract: A process is taught, comprising polymerizing ethylene in the presence of a catalyst to form a crystalline ethylene-based polymer having a crystallinity of at least 50% as determined by DSC Crystallinity in a first reactor or a first part of a multi-part reactor and reacting the crystalline ethylene-based polymer with additional ethylene in the presence of a free-radical initiator to form an ethylenic polymer in at least one other reactor or a later part of a multi-part reactor.
    Type: Application
    Filed: June 2, 2010
    Publication date: December 9, 2010
    Applicant: Dow Global Technologies Inc.
    Inventors: Teresa P. Karjala, Sean W. Ewart, Christopher R. Eddy, Alfred E. Vigil, Mehmet Demirors, Sarat Munjal, Wallace W. Yau