Patents by Inventor Ronald Epstein

Ronald Epstein 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).

  • Catalyst composition for polyolefin polymers
    Patent number: 12528762
    Abstract: A Ziegler-Natta catalyst composition is disclosed. The catalyst composition is formed from a procatalyst containing a magnesium moiety and a titanium moiety. At least one internal electron donor is incorporated into the procatalyst. During a titanation procedure in conjunction with the internal electron donor, a titanium extractant is used to remove or deactivate low activity or atactic titanium active sites.
    Type: Grant
    Filed: September 16, 2020
    Date of Patent: January 20, 2026
    Assignee: W.R. Grace & Co.-CONN
    Inventors: Ronald Epstein, Michael Miller, Michael Elder, Vladimir Marin, Ahmed Hintolay, Timothy Boyer
  • Catalyst composition and system having extended lifetime
    Patent number: 11945896
    Abstract: A Ziegler-Natta catalyst composition is disclosed. The catalyst composition includes an internal electron donor with improved polymerization kinetics, a long lifetime, improved stereoselectivity and/or improved hydrogen response.
    Type: Grant
    Filed: September 10, 2020
    Date of Patent: April 2, 2024
    Assignee: W.R. Grace & Co.-CONN.
    Inventors: Joseph Coalter, III, Rose Kent, Adam Marwitz, Ronald Epstein, Michael Elder
  • CATALYST COMPOSITION AND SYSTEM HAVING EXTENDED LIFETIME
    Publication number: 20220380491
    Abstract: A Ziegler-Natta catalyst composition is disclosed. The catalyst composition includes an internal electron donor with improved polymerization kinetics, a long lifetime, improved stereoselectivity and/or improved hydrogen response.
    Type: Application
    Filed: September 10, 2020
    Publication date: December 1, 2022
    Applicant: W.R. Grace & Co.-CONN
    Inventors: Joseph COALTER, III, Rose KENT, Adam MARWITZ, Ronald EPSTEIN, Michael ELDER
  • CATALYST COMPOSITION FOR POLYOLEFIN POLYMERS
    Publication number: 20220220060
    Abstract: A Ziegler-Natta catalyst composition is disclosed. The catalyst composition is formed from a procatalyst containing a magnesium moiety and a titanium moiety. At least one internal electron donor is incorporated into the procatalyst. During a titanation procedure in conjunction with the internal electron donor, a titanium extractant is used to remove or deactivate low activity or atactic titanium active sites.
    Type: Application
    Filed: September 16, 2020
    Publication date: July 14, 2022
    Applicant: W.R. Grace & Co.-CONN
    Inventors: Ronald EPSTEIN, Michael MILLER, Michael ELDER, Vladimir MARIN, Ahmed HINTOLAY, Timothy BOYER
  • Titanium halide catalyst for polymerization
    Patent number: 4312782
    Abstract: A novel catalyst system for the polymerization of alpha-olefins is provided. The catalyst system comprises: (a) an organoaluminum containing component, e.g. triethyl aluminum, and (b) a titanium halide containing component. The titanium halide containing component is obtained by copulverizing a halogen containing magnesium compound, e.g. MgCl.sub.2, with an active hydrogen containing organic compound, e.g. phenol, to produce a copulverized product. The copulverized product is then reacted with an organometallic compound of a metal of Groups I to III of the Periodic Table, e.g. triethyl aluminum, to produce a reaction product. The reaction product is then copulverized with a complex of a first titanium halide compound and an electron-donor, e.g. TiCl.sub.4.ethyl benzoate, to produce a solid reaction product. The solid reaction product is then reacted with a second titanium halide compound, e.g. TiCl.sub.4.
    Type: Grant
    Filed: May 12, 1980
    Date of Patent: January 26, 1982
    Assignee: Stauffer Chemical Company
    Inventors: Robert Mink, Ronald Epstein