Patents by Inventor Silvia SCHNITZLER

Silvia SCHNITZLER 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).

  • Use of catalysts for the metathesis of nitrile rubber
    Patent number: 11311868
    Abstract: The present invention relates to the use of specific catalysts for the metathesis degradation of nitrile rubber (NBR). The invention further relates to a method for preparing nitrile rubber with reduced molecular weight using specific catalysts.
    Type: Grant
    Filed: July 9, 2019
    Date of Patent: April 26, 2022
    Assignee: ARLANXEO DEUTSCHLAND GMBH
    Inventors: Silvia Schnitzler, Sarah David
  • Use of ruthenium and osmium catalysts for the metathesis of nitrile rubber
    Patent number: 11203679
    Abstract: The present invention relates to the use of Ru and Os carbene complexes with a hydroxamic acid (ester) function for the metathesis degradation of nitrile rubber (NBR). The invention further relates to a method for producing hydrogenated nitrile rubbers, by subjecting a nitrile rubber to a metathesis degradation in the presence of the said catalyst, and the degraded nitrile rubber obtained subsequently undergoes a hydrogenation, preferably in situ.
    Type: Grant
    Filed: April 26, 2019
    Date of Patent: December 21, 2021
    Assignee: ARLANXEO DEUTSCHLAND GMBH
    Inventors: Silvia Schnitzler, Sarah David
  • USE OF CATALYSTS FOR THE METATHESIS OF NITRILE RUBBER
    Publication number: 20210260568
    Abstract: The present invention relates to the use of specific catalysts for the metathesis degradation of nitrile rubber (NBR). The invention further relates to a method for preparing nitrile rubber with reduced molecular weight using specific catalysts.
    Type: Application
    Filed: July 9, 2019
    Publication date: August 26, 2021
    Inventors: Silvia SCHNITZLER, Sarah DAVID
  • USE OF RUTHENIUM AND OSMIUM CATALYSTS FOR THE METATHESIS OF NITRILE RUBBER
    Publication number: 20210130590
    Abstract: The present invention relates to the use of Ru and Os carbene complexes with a hydroxamic acid (ester) function for the metathesis degradation of nitrile rubber (NBR). The invention further relates to a method for producing hydrogenated nitrile rubbers, by subjecting a nitrile rubber to a metathesis degradation in the presence of the said catalyst, and the degraded nitrile rubber obtained subsequently undergoes a hydrogenation, preferably in situ.
    Type: Application
    Filed: April 26, 2019
    Publication date: May 6, 2021
    Applicant: ARLANXEO DEUTSCHLAND GMBH
    Inventors: Silvia SCHNITZLER, Sarah DAVID