1
Yang Jian, Matthew W Holtcamp, Garth R Giesbrecht, Gregory S Day: Metallocenes and catalyst compositions derived therefrom. ExxonMobil Chemical Patents, February 2, 2016: US09249239 (7 worldwide citation)

This invention relates to a novel group 2, 3 or 4 transition metal metallocene catalyst compound that is asymmetric having two non-identical indenyl ligands with substitution at R2 having a branched or unbranched C1-C20 alkyl group substituted with a cyclic group or a cyclic group, R8 is an alkyl gr ...


2
Garth R Giesbrecht, Matthew W Holtcamp, Gregory S Day, John R Hagadorn: Supported Salan catalysts. ExxonMobil Chemical Patents, Daniel N Lundeen, Lundeen & Lundeen PLLC, September 1, 2015: US09120879 (3 worldwide citation)

Supported Salan catalysts, a process comprising contacting one or more olefins with a catalyst system comprising an activator and a Salan catalyst disposed on a support, and polymers produced by the process.


3
Garth R Giesbrecht, Matthew W Holtcamp, Moshe Kol, Gregory S Day, Konstantin Press: Halogenated catalysts comprising Salan ligands. ExxonMobil Chemical Patents, Ramot at Tel Aviv University, Daniel N Lundeen, Lundeen & Lundeen PLLC, February 10, 2015: US08952114 (3 worldwide citation)

Catalysts comprising a halogenated Salan ligand. Also disclosed are catalyst systems comprising the catalyst and an activator; methods to prepare the ligands, catalysts and catalyst systems; processes to polymerize olefins using the catalysts and/or catalyst systems; and the olefin polymers prepared ...


4
Moshe Kol, Matthew W Holtcamp, Garth R Giesbrecht, Gregory S Day, Konstantin Press: Long-bridged salen catalyst. ExxonMobil Chemical Patents, Ramot at Tel Aviv University, Daniel N Lundeen, Lundeen & Lundeen PLLC, December 1, 2015: US09200100 (3 worldwide citation)

Catalysts comprising long-bridged salen ligands comprising an imino-phenylene-alkylene-imino or an imino-napthalenylene-alkylene-imino bridged salen compound. Also, catalyst systems comprising the catalyst and an activator; methods to prepare the ligands, catalysts and catalyst systems; processes to ...


5
Garth R Giesbrecht, Gregory S Day, Matthew W Holtcamp, Moshe Kol, David A Cano, Eric D Whetmore, Konstantin Press: Catalysts comprising salan ligands. ExxonMobil Chemical Patents, Ramot at Tel Aviv University, Daniel N Lundeen, Lundeen & Lundeen PLLC, February 17, 2015: US08957171 (3 worldwide citation)

Catalysts comprising salan ligands with carbazole moieties. Also, catalyst systems comprising the catalyst and an activator; methods to prepare the ligands, catalysts and catalyst systems; processes to polymerize olefins using the catalysts and/or catalyst systems; and the olefin polymers prepared a ...


6
Garth R Giesbrecht, Matthew W Holtcamp, Moshe Kol, Gregory S Day, David A Cano: Nonsymmetric catalysts comprising salan ligands. ExxonMobil Chemical Patents, Ramot at Tel Aviv University, Daniel N Lundeen, Lundeen & Lundeen PLLC, February 17, 2015: US08957172 (3 worldwide citation)

Catalysts comprising a non-symmetrical Salan ligand with a carbazole moiety. Also disclosed are catalyst systems comprising the catalyst and an activator; methods to prepare the ligands, catalysts and catalyst systems; processes to polymerize olefins using the catalysts and/or catalyst systems; and ...


7

8
Garth R Giesbrecht, Timothy M Boller, Alexander Z Voskoboynikov, Andrey F Asachenko, Mikhail V Nikulin, Alexey A Tsarev: Catalyst compounds and use thereof. ExxonMobil Chemical Patents, Catherine L Bell, October 1, 2013: US08546501 (1 worldwide citation)

This invention relates to Group 4 catalyst compounds containing di-anionic tridentate nitrogen/oxygen based ligands. The catalyst compounds are useful, with or without activators, to polymerize olefins, particularly α-olefins, or other unsaturated monomers. Systems and processes to oligomerize and/o ...


9
Juliet B Wagner, Garth R Giesbrecht, Sun Chueh Kao, Stephen P Jaker: Multiple catalyst system comprising metallocenes and tridentate nitrogen based ligand complexes for olefin polymerisation. Univation Technologies, Brooks Cameron & Huebsch PLLC, July 25, 2017: US09714305 (1 worldwide citation)

Catalyst systems and methods for making and using the same are described herein. A catalyst system can include at least three catalysts. The three catalysts include a metallocene catalyst, a first non-metallocene including a ligand complexed to a metal through two or more nitrogen atoms, and a secon ...


10
Sun Chueh Kao, Phuong A Cao, C Jeff Harlan, Parul A Khokhani, George Rodriguez, Francis C Rix, Garth R Giesbrecht: Methods of preparing a catalyst system. Univation Technologies, Brooks Cameron & Huebsch PLLC, January 12, 2016: US09234060

Disclosed herein are methods of preparing a catalyst system comprising a spray-dried activator and polymerization processes employing these catalyst systems.