Patents by Inventor Rennisha R. Wickham

Rennisha R. Wickham 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).

  • Tile containing primer coated substrates with good adhesion
    Patent number: 11820111
    Abstract: A tile comprising the following components: A) a first film formed from a first composition comprising the following: i) a functionalized olefin-based polymer comprising one or more chemical groups selected from the following: a) a carboxylic acid, and/or b) an anhydride, and, optionally, c) an amino or an amine; and ii) a functionalized styrenic block copolymer, comprising, in polymerized form, styrene, and ethylene and/or at least one alpha-olefin, and comprising one or more chemical groups selected from the following: a) a carboxylic acid, and/or b) an anhydride; and B) a substrate comprising at least one layer formed from a second composition comprising a propylene-based polymer; and wherein the first film covers at least one surface of the substrate.
    Type: Grant
    Filed: October 23, 2018
    Date of Patent: November 21, 2023
    Assignee: Dow Global Technologies LLC
    Inventors: Susan G. Brown, Qichun Wan, Ronald J. Weeks, Mark T. Jablonka, Rennisha R. Wickham, Colin LiPiShan, Miguel Alberto de Jesus Prieto
  • Non-extrusion process for functionalization of low viscosity polyolefins
    Patent number: 11136427
    Abstract: A process to form a first composition comprising a functionalized olefin-based polymer comprises: a) polymerizing a composition comprising an olefin to form a reaction product comprising an olefin-based polymer; b) subjecting at least a portion of the reaction product to at least one devolatilization to form a polymer-rich melt, wherein step b) occurs downstream from and in-line with step a); and c) reacting at least a portion of the polymer-rich melt with at least one functionalization agent and, optionally, at least one free-radical initiator to form the first composition, wherein step c) occurs downstream from and in-line with step b), wherein “the viscosity of the functionalized olefin-based polymer (177° C./350° F.)” to “the viscosity of the olefin-based polymer (177° C./350° F.)” is from 0.1 to 5.0.
    Type: Grant
    Filed: September 22, 2016
    Date of Patent: October 5, 2021
    Assignee: Dow Global Technologies LLC
    Inventors: Shrikant Dhodapkar, Gregory E. Johnson, Rennisha R. Wickham, Santosh S. Bawiskar, Guang Ming Li, Harold W. Boone
  • Non-Extrusion Process for Functionalization of Low Viscosity Polyolefins
    Publication number: 20180258209
    Abstract: A process to form a first composition comprising a functionalized olefin-based polymer comprises: a) polymerizing a composition comprising an olefin to form a reaction product comprising an olefin-based polymer; b) subjecting at least a portion of the reaction product to at least one devolatilization to form a polymer-rich melt, wherein step b) occurs downstream from and in-line with step a); and c) reacting at least a portion of the polymer-rich melt with at least one functionalization agent and, optionally, at least one free-radical initiator to form the first composition, wherein step c) occurs downstream from and in-line with step b), wherein “the viscosity of the functionalized olefin-based polymer (177° C./350° F.)” to “the viscosity of the olefin-based polymer (177° C./350° F.)” is from 0.1 to 5.0.
    Type: Application
    Filed: September 22, 2016
    Publication date: September 13, 2018
    Inventors: Shrikant Dhodapkar, Gregory E. Johnson, Rennisha R. Wickham, Santosh S. Bawiskar, Guang Ming Li, Harold W. Boone