Patents by Inventor Nikola S. Lambic

Nikola S. Lambic 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).

  • Publication number: 20240124618
    Abstract: The embodiments described herein pertain to constrained geometry catalyst (CGC)-type titanium catalyst compounds with an amido moiety that features asymmetric substituents that give rise to diastereomerism in new catalysts. Catalyst compounds embodying the present technological advancement are excellent catalysts for variety of transformations including homopolymers of propylene (P), ethylene (E), ethylene-propylene (EP)-copolymers and ethylene-octene (EO) copolymers.
    Type: Application
    Filed: January 4, 2022
    Publication date: April 18, 2024
    Inventors: Nikola S. Lambic, Gregory J. Smith-Karahalis
  • Publication number: 20240018279
    Abstract: This invention relates to a process to produce cyclic olefin containing polymer compositions using transition metal complexes of a dianionic, tridentate ligand that features a central neutral heterocyclic Lewis base and two phenolate donors, where the tridentate ligand coordinates to the metal center to form two eight-membered rings. Preferably the bis(phenolate) complexes are represented by Formula (I): where M, L, X, m, n, E, E?, Q, R1, R2, R3, R4, R1?, R2?, R3?, R4?, A1, A1?, A3A2, and A2?A3? are as defined herein, where A1QA1? are part of a heterocyclic Lewis base containing 4 to 40 non-hydrogen atoms that links A2 to A2? via a 3-atom bridge with Q being the central atom of the 3-atom bridge.
    Type: Application
    Filed: July 27, 2021
    Publication date: January 18, 2024
    Inventors: Jo Ann M. Canich, Nikola S. Lambic, Gursu Culcu, Peijun Jiang, John R. Hagadorn, Sarah J. Mattler
  • Publication number: 20230416418
    Abstract: The present disclosure provides aromatic-solvent-free supported catalyst compounds and catalyst systems comprising asymmetric bridged metallocenes containing a ligand having at least one saturated ring, catalyst systems including such compounds, and uses thereof. These supported catalyst compounds and catalyst systems can be used to prepare polymer comprising no aromatic solvent.
    Type: Application
    Filed: November 17, 2021
    Publication date: December 28, 2023
    Applicant: EXXONMOBIL CHEMICAL PATENTS INC.
    Inventors: Nikola S. LAMBIC, Francis C. RIX, Lubin LUO, Charles J. HARLAN, An Ngoc-Michael NGUYEN
  • Patent number: 11802170
    Abstract: A catalyst compound and process for olefin polymerization.
    Type: Grant
    Filed: April 25, 2022
    Date of Patent: October 31, 2023
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Nikola S. Lambic, An Ngoc-Michael Nguyen
  • Publication number: 20230192744
    Abstract: Compositions may comprise symmetrical and asymmetrical pyridine-containing transition metal-complexes having appended group 13 Lewis acids positioned on the pyridine-containing ligands of the transition metal-complex such that the group 13 Lewis acid may be near the catalytic site, thereby allowing the appended group 13 Lewis acid to function more efficiently in promoting formation of a catalytically active species. Catalysts systems may comprise these symmetrical and asymmetrical pyridine-containing transition metal-complexes and methods of preparing polyolefins may use these catalyst systems.
    Type: Application
    Filed: April 23, 2021
    Publication date: June 22, 2023
    Inventors: Nikola S. Lambic, Matthew W. Holtcamp
  • Publication number: 20230141606
    Abstract: The alkylation of transition metal coordination catalyst complexes (such as metallocenes and/or post-metallocenes) in non-polar solvents with high conversion to the dialkylated transition metal coordination catalyst complex may be accomplished by reacting (a) a transition metal coordination catalyst complex comprising a transition metal linked to at least one an anionic donor ligand and at least one leaving group having a non-carbon atom directly linked to the transition metal, (b) an aluminum alkyl, and (c) a fluoride salt at 0° C. to 85° C. in a non-polar solvent to yield an alkylated transition metal coordination catalyst complex.
    Type: Application
    Filed: March 18, 2021
    Publication date: May 11, 2023
    Inventors: Lubin Luo, Nikola S. Lambic, Jo Ann M. Canich
  • Publication number: 20220372178
    Abstract: A catalyst compound and process for olefin polymerization.
    Type: Application
    Filed: April 25, 2022
    Publication date: November 24, 2022
    Inventors: Nikola S. Lambic, An Ngoc-Michael Nguyen
  • Publication number: 20220315680
    Abstract: The present disclosure provides catalyst compounds comprising asymmetric bridged metallocenes containing a ligand having at least one saturated ring, catalyst systems including such compounds, and uses thereof. Catalyst compounds of the present disclosure can include indacenyl-type ligands. In another class of embodiments, the present disclosure is directed to polymerization processes to produce polyolefin polymers from catalyst systems including one or more olefin polymerization catalysts, at least one activator, and an optional support.
    Type: Application
    Filed: July 27, 2020
    Publication date: October 6, 2022
    Inventors: Nikola S. Lambic, Tzu-Pin Lin, Lubin Luo, Maksim Shivokhin, Laughlin G. McCullough, Carlos R. Lopez-Barron
  • Publication number: 20220289879
    Abstract: This invention relates to polymers comprising: one or more that include 1) at least 11 wt % 4 substituted 1,4 hexadiene and less than 20 wt % 5-methyl-1,4-hexadiene, based upon the weight of the polymer, and 2) optionally, one or more olefins; and processes to produces such polymers using metallocene or post-metallocene catalyst compounds.
    Type: Application
    Filed: February 23, 2022
    Publication date: September 15, 2022
    Inventors: Alex E. Carpenter, Tzu-Pin Lin, Brian J. Rohde, Sarah J. Mattler, Nikola S. Lambic, Hsu Chiang, Peijun Jiang, Irene C. Cai, Gursu Culcu, Jarod M. Younker
  • Publication number: 20220213241
    Abstract: This invention relates to a process to produce an ionomer comprising: 1) contacting, in a reactor, one or more C2-C60 ?-olefins, an optional diene, and a metal alkenyl with a catalyst system comprising an activator, a catalyst compound, and a support; 2) forming a copolymer comprising one or more C2-C60 ?-olefin monomers and about 0.01 wt % to about 20 wt %, based on the weight of the copolymer, of metal alkenyl; 3) functionalizing and quenching the polymerization reaction with one or more electrophilic groups; and 4) obtaining ionomer.
    Type: Application
    Filed: December 20, 2021
    Publication date: July 7, 2022
    Inventors: Carlos R. Lopez-Barron, Tzu-Pin Lin, Avery R. Smith, Nikola S. Lambic
  • Patent number: 11225539
    Abstract: This invention relates to supported catalyst compositions of transition metal complexes of a dianionic, tridentate ligand that features a central neutral heterocyclic Lewis base and two phenolate donors, where the tridentate ligand coordinates to the metal center to form two eight-membered rings. Preferably the bis(phenolate) complexes are represented by Formula (I): where M, L, X, m, n, E, E?, Q, R1, R2, R3, R4, R1?, R2?, R3?, R4?, A1, A1?, A3A2, and A2?A3? are as defined herein, where A1QA1? are part of a heterocyclic Lewis base containing 4 to 40 non-hydrogen atoms that links A2 to A2? via a 3-atom bridge with Q being the central atom of the 3-atom bridge.
    Type: Grant
    Filed: February 11, 2020
    Date of Patent: January 18, 2022
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Charles J. Harlan, Nikola S. Lambic, John R. Hagadorn, Jo Ann M. Canich
  • Publication number: 20200255561
    Abstract: This invention relates to supported catalyst compositions of transition metal complexes of a dianionic, tridentate ligand that features a central neutral heterocyclic Lewis base and two phenolate donors, where the tridentate ligand coordinates to the metal center to form two eight-membered rings. Preferably the bis(phenolate) complexes are represented by Formula (I): where M, L, X, m, n, E, E?, Q, R1, R2, R3, R4, R1?, R2?, R3?, R4?, A1, A1?, A3A2, and A2?A3? are as defined herein, where A1QA1? are part of a heterocyclic Lewis base containing 4 to 40 non-hydrogen atoms that links A2 to A2? via a 3-atom bridge with Q being the central atom of the 3-atom bridge.
    Type: Application
    Filed: February 11, 2020
    Publication date: August 13, 2020
    Inventors: Charles J. Harlan, Nikola S. Lambic, John R. Hagadorn, Jo Ann M. Canich