Patents by Inventor Ulrich SCHREIDER

Ulrich SCHREIDER 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 pellets of copolymers of propylene
    Patent number: 11292156
    Abstract: The present invention provides a process for extruding and pelletising a propylene copolymer. The copolymer has a content of comonomer from 5 to 40% by mole, a melt flow rate MFR2 measured at 230° C. under a load of 2.16 kg of from 0.5 to 15 g/10 min and a content of cold xylene soluble material of from 20 to 60% by weight. The process comprises extruding the propylene copolymer through a die plate into an underwater pelletiser and cutting strands of the propylene copolymer into pellets in the underwater pelletiser, wherein the ratio of the mass flow rate of the propylene copolymer to the mass flow rate of the cooling water is from 0.020 to 0.060; and the propylene copolymer comprises a polymeric nucleating agent.
    Type: Grant
    Filed: December 7, 2015
    Date of Patent: April 5, 2022
    Assignee: Borealis AG
    Inventors: Martina Sandholzer, Klaus Bernreitner, Hermann Braun, Hermann Prokschi, Ulrich Schreider, Frank Schroder, Thomas Hager, Katja Klimke, Markus Gahleitner
  • PROCESS FOR PRODUCING PELLETS OF COPOLYMERS OF PROPYLENE
    Publication number: 20170341267
    Abstract: The present invention provides a process for extruding and pelletising a propylene copolymer. The copolymer has a content of comonomer from 5 to 40% by mole, a melt flow rate MFR2 measured at 230° C. under a load of 2.16 kg of from 0.5 to 15 g/10 min and a content of cold xylene soluble material of from 20 to 60% by weight. The process comprises extruding the propylene copolymer through a die plate into an underwater pelletiser and cutting strands of the propylene copolymer into pellets in the underwater pelletiser, wherein the ratio of the mass flow rate of the propylene copolymer to the mass flow rate of the cooling water is from 0.020 to 0.060; and the propylene copolymer comprises a polymeric nucleating agent.
    Type: Application
    Filed: December 7, 2015
    Publication date: November 30, 2017
    Inventors: Martina SANDHOLZER, Klaus BERNREITNER, Hermann BRAUN, Hermann PROKSCHI, Ulrich SCHREIDER, Frank SCHRODER, Thomas HAGER, Katja KLIMKE, Markus GAHLEITNER