Patents by Inventor Barry Collins Moore

Barry Collins Moore 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 producing specific tapered block copolymers
    Patent number: 6221968
    Abstract: The present invention is a process for producing an anionic block polymer which comprises optionally anionically polymerizing styrene to form a homopolymer block of polystyrene, anionically polymerizing isoprene to form a hompolymer block of polyisoprene, and anionically copolymerizing styrene and isoprene to form a tapered copolymer block wherein the charge rate of both styrene and isoprene is from 15% to 75% by weight of the total tapered block monomer charge per minute and the weight ratio of the styrene to the isoprene is from 0.5:1 to 1.5:1. The process produces a unique polymer containing a tapered polymer block of styrene and isoprene which has a specific taper structure consisting of small segments of variable size of styrene monomers and isoprene monomers.
    Type: Grant
    Filed: January 7, 2000
    Date of Patent: April 24, 2001
    Assignee: Shell Oil Company
    Inventors: Harvey Emerson Atwood, Michael John Modic, Barry Collins Moore, John Louis Scheve, Christine Marie Christian