Patents by Inventor Ralph Allen Whitney

Ralph Allen Whitney 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).

  • Halobutyl elastomers
    Patent number: 8198379
    Abstract: The present invention relates to the modification of butyl elastomers, particularly halobutyl elastomers, under solvent free conditions with a phase transfer catalyst in the presence of an alkyl metal salt of an oxygen or sulfur-based nucleophile.
    Type: Grant
    Filed: August 2, 2006
    Date of Patent: June 12, 2012
    Assignee: LANXESS Inc.
    Inventors: John Scott Parent, Ralph Allen Whitney, Sergio A. Guillén-Castellanos, Rui Resendes
  • Methods for the preparation of butyl graft copolymers
    Patent number: 7629418
    Abstract: Preparation of butyl rubber based graft co-polymers from halobutyl elastomers using phase transfer catalysts in the presence of a solution of an alkali metal salt of an oxygen or sulfur nucleophile that is bound to a polymeric substrate. Graft co-polymers can be produced of a butyl polymer (isobutene-co-isoprene) and polymeric substrates such as polyethylene, polypropylene, polystyrene, polybutadiene, polysilanes, polysiloxanes, polyethylene glycol, polyethylene oxide, polyphosphazenes, polyferrocenes or their hybrids.
    Type: Grant
    Filed: August 17, 2006
    Date of Patent: December 8, 2009
    Assignees: LANXESS Inc., Queen's University at Kingston
    Inventors: John Scott Parent, Sergio A. Guillén-Castellanos, Ralph Allen Whitney, Rui Resendes
  • HALOBUTYL ELASTOMERS
    Publication number: 20090203850
    Abstract: The present invention relates to the modification of butyl elastomers, particularly halobutyl elastomers, under solvent free conditions with a phase transfer catalyst in the presence of an alkyl metal salt of an oxygen or sulfur-based nucleophile.
    Type: Application
    Filed: August 2, 2006
    Publication date: August 13, 2009
    Applicants: QUEEN'S UNIVERSITY AT KINGSTON, LANXESS Inc.
    Inventors: John Scott Parent, Ralph Allen Whitney, Sergio A. Guillen-Castellanos, Rui Resendes
  • Liquid Maleated Butyl Rubber
    Publication number: 20090189118
    Abstract: The present invention relates to a grafted liquid polymer comprising a polymer of a C4 to C7 monoolefin monomer and a C4 to C14 multiolefin monomer, a grafting material and a free radical initiator and to a process for the preparation of the grafted liquid polymer. More specifically, a liquid maleated butyl rubber composition is disclosed. The present invention also relates to grafted liquid polymer compositions which are curable in the presence of multifunctional amines. The compositions of the invention are used in a variety of applications, including injection molded fuel cells gaskets, adhesives, sealants or as polyurethane substrates.
    Type: Application
    Filed: July 6, 2006
    Publication date: July 30, 2009
    Applicants: LANXESS INC., QUEEN'S UNIVERSITY OF KINGSTON
    Inventors: Rui Resendes, John Scott Parent, Ralph Allen Whitney
  • Process to produce silica-filled elastomeric compounds
    Patent number: 7238736
    Abstract: The present invention provides a process for preparing a filled halobutyl elastomer, which includes mixing a halobutyl elastomer with at least one mineral filler and at least one phosphine modifier and optionally curing the filled elastomer with sulfur or other curative systems. Filled halobutyl elastomers prepared according to the present invention possess improved levels of filler dispersion which results in a reduction in the hardness of the compound and an increased tensile strength.
    Type: Grant
    Filed: April 29, 2004
    Date of Patent: July 3, 2007
    Assignees: LANXESS Inc., Queens University at Kingston
    Inventors: John Scott Parent, Ralph Allen Whitney, Andrea Liskova, Rui Resendes