Patents by Inventor Ivan Sluijs

Ivan Sluijs 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).

  • Preparation of highly heat-resistant (co)polycarbonates by the transesterification method
    Patent number: 10370491
    Abstract: The present invention relates to a melt transesterification process for the production of (co)polycarbonates from diaryl carbonates and cycloalkylidene diphenols, which process comprises the addition of a monohydroxyaryl compound in an amount of 5.0 to 20.0 wt.-%, based on the total mass of the reaction mixture. The invention further relates to a (co)polycarbonate obtained by the process.
    Type: Grant
    Filed: January 20, 2016
    Date of Patent: August 6, 2019
    Assignee: Covestro Deutschland AG
    Inventors: Ivan Sluijs, Jan Heijl, Erik Sluyts, Frank Bruynseels
  • Preparation of Highly Heat-Resistant (Co)Polycarbonates by the Transesterification Method
    Publication number: 20170369642
    Abstract: The present invention relates to a melt transesterification process for the production of (co)polycarbonates from diaryl carbonates and cycloalkylidene diphenols, which process comprises the addition of a monohydroxyaryl compound in an amount of 5.0 to 20.0 wt.-%, based on the total mass of the reaction mixture. The invention further relates to a (co)polycarbonate obtained by the process.
    Type: Application
    Filed: January 20, 2016
    Publication date: December 28, 2017
    Inventors: Ivan Sluijs, Jan Heijl, Erik Sluyts, Frank Bruynseels