Patents by Inventor Thomas Ratzsch

Thomas Ratzsch 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: 10774202
    Abstract: The present application relates to a process for producing a multimodal polyethylene composition comprising the steps of at least partially melting a first polyethylene resin (A) having a viscosity average molecular weight My 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 in a first homogenizing device, at least partially melting a second polyethylene resin (B) having a Mw of equal to or more than 50 kg/mol to less than 700 kg/mol, and a density of equal to or more than 910 kg/m3 to equal to or less than 960 kg/m3 in a second homogenizing device, combining the at least partially molten first polyethylene resin (A) with the at least partially molten second polyethylene resin (B) in said second homogenizing device, compounding the combined first polyethylene resin (A) and second polyethylene resin (B) in said second homogenizing device to form a multimodal polyethylene composition, wherein the multimo
    Type: Grant
    Filed: December 21, 2015
    Date of Patent: September 15, 2020
    Assignee: BOREALIS AG
    Inventors: Carl-Gustaf Ek, Thomas Ratzsch, Bernd Kretzschmar
  • 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
  • PROCESS FOR PRODUCING MULTIMODAL POLYETHYLENE BLENDS INCLUDING ULTRA-HIGH MOLECULAR WEIGHT COMPONENTS
    Publication number: 20170275442
    Abstract: The present application relates to a process for producing a multimodal polyethylene composition comprising the steps of at least partially melting a first polyethylene resin (A) having a viscosity average molecular weight My 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 in a first homogenizing device, at least partially melting a second polyethylene resin (B) having a Mw of equal to or more than 50 kg/mol to less than 700 kg/mol, and a density of equal to or more than 910 kg/m3 to equal to or less than 960 kg/m3 in a second homogenizing device, combining the at least partially molten first polyethylene resin (A) with the at least partially molten second polyethylene resin (B) in said second homogenizing device, compounding the combined first polyethylene resin (A) and second polyethylene resin (B) in said second homogenizing device to form a multimodal polyethylene composition, wherein the multimo
    Type: Application
    Filed: December 21, 2015
    Publication date: September 28, 2017
    Inventors: Carl-Gustaf Ek, Thomas Ratzsch, Bernd Kretzschmar