Patents by Inventor Jennifer Stewart

Jennifer Stewart 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).

  • Highly transparent and tough-stiff styrene-butadiene block copolymer mixtures
    Patent number: 8217104
    Abstract: A mixture which comprises a) from 25 to 75% by weight of a block copolymer A which comprises at least one hard block S composed of vinylaromatic monomers and comprises one or more soft blocks BA in each case composed of from 0 to 5% by weight of vinylaromatic monomers and from 95 to 100% by weight of dienes, where the proportion by weight of the hard blocks S in the block copolymer A is from 65 to 90% by weight; b) from 5 to 25% by weight of a block copolymer B which comprises at least one hard block S composed of vinylaromatic monomers and comprises one or more copolymer blocks (B/S)B in each case composed of from 20 to 60% by weight of vinylaromatic monomers and from 80 to 40% by weight of dienes, where the proportion by weight of the hard blocks S in the block copolymer B is from 25 to 70% by weight; c) from 0 to 70% by weight of polystyrene or of a block copolymer C other than A and B, and d) from 0 to 6% by weight of a plasticizer D, where the entirety of components A) to D) gives 100% by weight, and
    Type: Grant
    Filed: June 13, 2007
    Date of Patent: July 10, 2012
    Assignee: Styrolution GmbH
    Inventors: Jennifer Stewart, Peter Merkel, Daniel Wagner, Konrad Knoll, Jürgen Koch