Patents by Inventor Gabriele Holtz

Gabriele Holtz 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).

  • High styrene high vinyl styrene-butadiene rubber with narrow molecular weight distribution and methods for preparation thereof
    Patent number: 8927645
    Abstract: A polymer having at least the following characteristics: (a) a block styrene content with more than 6 consecutive styrene units from about 15 to about 35 weight percent based on total styrene content in the polymer; (b) a vinyl content from about 25 to about 80 weight percent based on total amount of polymerized 1,3-diene; and (c) a styrene content from about 35 to about 75 weight percent based on total weight of polymer; and (d) a molecular weight distribution (Mw/Mn) of 1.5 or less.
    Type: Grant
    Filed: June 22, 2012
    Date of Patent: January 6, 2015
    Assignee: Styron Europe GmbH
    Inventors: Evemarie Hamann, Silvia Valenti, Gabriele Holtz
  • High styrene high vinyl styrene-butadiene rubber with narrow molecular weight distribution and methods for preparation thereof
    Patent number: 8927644
    Abstract: A polymer having at least the following characteristics: (a) a block styrene content with more than 4 consecutive styrene units from about 40 to about 70 weight percent based on total styrene content in the polymer; (b) a vinyl content from about 25 to about 80 weight percent based on total amount of polymerized 1,3-diene; (c) a styrene content from about 20 to about 75 weight percent based on total weight of polymer; and (d) a molecular weight distribution (Mw/Mn) of 1.5 or less.
    Type: Grant
    Filed: June 22, 2012
    Date of Patent: January 6, 2015
    Assignee: Styron Europe GmbH
    Inventors: Evemarie Hamann, Silvia Valenti, Gabriele Holtz
  • High Styrene High Vinyl Styrene-Butadiene Rubber With Narrow Molecular Weight Distribution And Methods For Preparation Thereof
    Publication number: 20140121319
    Abstract: A polymer having at least the following characteristics: (a) a block styrene content with more than 6 consecutive styrene units from about 15 to about 35 weight percent based on total styrene content in the polymer; (b) a vinyl content from about 25 to about 80 weight percent based on total amount of polymerized 1,3-diene; and (c) a styrene content from about 35 to about 75 weight percent based on total weight of polymer; and (d) a molecular weight distribution (Mw/Mn) of 1.5 or less.
    Type: Application
    Filed: June 22, 2012
    Publication date: May 1, 2014
    Applicant: STYRON EUROPE GMBH
    Inventors: Evemarie Hamann, Silvia Valenti, Gabriele Holtz
  • High Styrene High Vinyl Styrene-Butadiene Rubber with Narrow Molecular Weight Distribution and Methods for Preparation Thereof
    Publication number: 20140107286
    Abstract: A polymer having at least the following characteristics: (a) a block styrene content with more than 4 consecutive styrene units from about 40 to about 70 weight percent based on total styrene content in the polymer; (b) a vinyl content from about 25 to about 80 weight percent based on total amount of polymerized 1,3-diene; (c) a styrene content from about 20 to about 75 weight percent based on total weight of polymer; and (d) a molecular weight distribution (Mw/Mn) of 1.5 or less.
    Type: Application
    Filed: June 22, 2012
    Publication date: April 17, 2014
    Applicant: Styron Europe GmbH
    Inventors: Evemarie Hamann, Silvia Valenti, Gabriele Holtz