Patents by Inventor Thomas RÄTZSCH

Thomas RÄTZSCH 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 multimodal polyethylene blends including ultra-high molecular weight components
    Patent number: 10597470
    Abstract: The present application relates to a process for producing a multimodal polyethylene composition comprising the steps of blending a polyethylene fraction (A-1) having a weight average molecular weight Mw of equal to or more than 700 kg/mol to equal to or less than 10,000 kg/mol and a density of equal to or more than 920 kg/m3 to equal to or less than 960 kg/m3 and a polyethylene fraction (A-2) having a lower Mw as polyethylene fraction (A-1) and a density of equal to or more than 910 kg/m3 to equal to or less than 960 kg/m3 with a weight ratio of (A-1) to (A-2) of 45:55 to 80:20 to form a first polyethylene resin (A) having a Mw of equal to or more than 200 kg/mol to equal to or less than 1500 kg/mol, a melt flow rate MFR5 (190° C., 5 kg) of 0.
    Type: Grant
    Filed: December 21, 2015
    Date of Patent: March 24, 2020
    Assignee: BOREALIS AG
    Inventors: Bernd Kretzschmar, Carl-Gustaf Ek, Thomas Rätzsch, Yi Liu, Sandeep Tyagi
  • PROCESS FOR PRODUCING MULTIMODAL POLYETHYLENE BLENDS INCLUDING ULTRA-HIGH MOLECULAR WEIGHT COMPONENTS
    Publication number: 20170349678
    Abstract: The present application relates to a process for producing a multimodal polyethylene composition comprising the steps of blending a polyethylene fraction (A-1) having a weight average molecular weight Mw of equal to or more than 700 kg/mol to equal to or less than 10,000 kg/mol and a density of equal to or more than 920 kg/m3 to equal to or less than 960 kg/m3 and a polyethylene fraction (A-2) having a lower Mw as polyethylene fraction (A-1) and a density of equal to or more than 910 kg/m3 to equal to or less than 960 kg/m3 with a weight ratio of (A-1) to (A-2) of 45:55 to 80:20 to form a first polyethylene resin (A) having a Mw of equal to or more than 200 kg/mol to equal to or less than 1500 kg/mol, a melt flow rate MFR5 (190° C., 5 kg) of 0.
    Type: Application
    Filed: December 21, 2015
    Publication date: December 7, 2017
    Inventors: Bernd KRETZSCHMAR, Carl-Gustaf EK, Thomas RÄTZSCH, Yi LIU, Sandeep TYAGI