Patents by Inventor Alethea Pollock

Alethea Pollock 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).

  • Hot melt adhesives containing styrene butadiene block copolymer
    Patent number: 8378015
    Abstract: Hot melt adhesive compositions containing hyper-branched SBS block copolymers and end use applications thereof. The hyper-branched SBS is characterized in having a ratio between light-scattering molecular weight (of non-di-block polymer) and GPC molecular weight (of non-di-block polymer) greater than 1.4 and having ratio between light scattering molecular weight molecular weight (of non-di-block polymer) and light scattering molecular weight molecular weight (of di-block polymer) greater than 5. The ratio between light scattering molecular weight MW (of non-di-block polymer) and light scattering molecular weight MW (of di-block polymer) also defines the number of arms for the hyper branched structure. The weight average molecular weight of each arm of the hyper-branched SBS block copolymer is less than about 100,000.
    Type: Grant
    Filed: February 15, 2010
    Date of Patent: February 19, 2013
    Assignee: Henkel AG & Co. KGaA
    Inventors: Qiwei He, Yuhong Hu, Alethea Pollock, Justin Mehaffy, Michael G. Harwell
  • HOT MELT ADHESIVES CONTAINING STYRENE BUTADIENE BLOCK COPOLYMER
    Publication number: 20100210163
    Abstract: Hot melt adhesive compositions containing hyper-branched SBS block copolymers and end use applications thereof. The hyper-branched SBS is characterized in having a ratio between light-scattering molecular weight (of non-di-block polymer) and GPC molecular weight (of non-di-block polymer) greater than 1.4 and having ratio between light scattering molecular weight molecular weight (of non-di-block polymer) and light scattering molecular weight molecular weight (of di-block polymer) greater than 5. The ratio between light scattering molecular weight MW (of non-di-block polymer) and light scattering molecular weight MW (of di-block polymer) also defines the number of arms for the hyper branched structure. The weight average molecular weight of each arm of the hyper-branched SBS block copolymer is less than about 100,000.
    Type: Application
    Filed: February 15, 2010
    Publication date: August 19, 2010
    Inventors: Qiwei He, Yuhong Hu, Alethea Pollock, Justin Mehaffy, Michael G. Harwell