Patents by Inventor George S. Ostace

George S. Ostace 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).

  • Methods of controlling ziegler-natta pre-catalyst particles formation and use for olefin polymerization
    Patent number: 11332557
    Abstract: A colloidal suspension includes an organic phase and a complex of Formula I as precursor for Ziegler-Natta catalyst synthesis: XTiClp(OR1)4-p.YMg(OR2)q(OR3)t??(I). In Formula I, a molar ratio of X to Y (X/Y) is from 0.2 to 5.0, p is 0 or 1, 0<q<2, 0<t<2, the sum of q and t is 2, R1, R2, and R3 are each independently a linear or branched alkyl, a linear or branched heteroalkyl, a cycloalkyl, a substituted cycloalkyl, a substituted heterocycloalkyl, a substituted aryl, or a (heteroaryl)alkyl; and R2 is not the same as R3.
    Type: Grant
    Filed: June 18, 2020
    Date of Patent: May 17, 2022
    Assignee: Braskem America, Inc.
    Inventors: Jonas Alves Fernandes, George S. Ostace, Dana Hess
  • Ziegler-Natta catalyst systems and methods of controlling particle size
    Patent number: 11214633
    Abstract: A colloidal suspension includes an organic phase and a complex of Formula I as precursor for Ziegler-Natta catalyst synthesis: XTiClp(OR1)4?p·YMg(OR2)q(OR3)t??(I). In Formula I, a molar ratio of X to Y (X/Y) is from 0.2 to 5.0, p is 0 or 1, 0<q<2, 0<t<2, the sum of q and t is 2, R1, R2, and R3 are each independently a linear or branched alkyl, a linear or branched heteroalkyl, a cycloalkyl, a substituted cycloalkyl, a substituted heterocycloalkyl, a substituted aryl, or a (heteroaryl)alkyl; and R2 is not the same as R3.
    Type: Grant
    Filed: December 6, 2019
    Date of Patent: January 4, 2022
    Assignee: Braskem America, Inc.
    Inventors: Jonas Alves Fernandes, George S. Ostace, Dana Hess
  • METHODS OF CONTROLLING ZIEGLER-NATTA PRE-CATALYST PARTICLES FORMATION AND USE FOR OLEFIN POLYMERIZATION
    Publication number: 20210070899
    Abstract: A colloidal suspension includes an organic phase and a complex of Formula I as precursor for Ziegler-Natta catalyst synthesis: XTiClp(OR1)4-p.YMg(OR2)q(OR3)t ??(I). In Formula I, a molar ratio of X to Y (X/Y) is from 0.2 to 5.0, p is 0 or 1, 0<q<2, 0<t<2, the sum of q and t is 2, R1, R2, and R3 are each independently a linear or branched alkyl, a linear or branched heteroalkyl, a cycloalkyl, a substituted cycloalkyl, a substituted heterocycloalkyl, a substituted aryl, or a (heteroaryl)alkyl; and R2 is not the same as R3.
    Type: Application
    Filed: June 18, 2020
    Publication date: March 11, 2021
    Inventors: Jonas Alves Fernandes, George S. Ostace, Dana Hess