Patents Assigned to ExxonMobil Chemical Patents Inc.
  • Patent number: 11041034
    Abstract: A process to produce a branched ethylene-?-olefin diene elastomer comprising combining a catalyst precursor and an activator with a feed comprising ethylene, C3 to C12 ?-olefins, and a dual-polymerizable diene to obtain a branched ethylene-?-olefin diene elastomer; where the catalyst precursor is selected from pyridyldiamide and quinolinyldiamido transition metal complexes. The branched ethylene-?-olefin diene elastomer may comprise within a range from 40 to 80 wt % of ethylene-derived units by weight of the branched ethylene-?-olefin diene elastomer, and 0.1 to 2 wt % of singly-polymerizable diene derived units, 0.1 to 2 wt % of singly-polymerizable diene derived units, and the remainder comprising C3 to C12 ?-olefin derived units, wherein the branched ethylene-?-olefin diene elastomer has a weight average molecular weight (Mw) within a range from 100 kg/mole to 300 kg/mole, an average branching index (g?avg) of 0.9 or more, and a branching index at very high Mw (g?1000) of less than 0.9.
    Type: Grant
    Filed: January 17, 2019
    Date of Patent: June 22, 2021
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Crisita Carmen H. Atienza, Rhutesh K. Shah, Ron Walker, John R. Hagadorn, Sudhin Datta
  • Patent number: 11041134
    Abstract: Compounds having the formula (F-I) below are provided herein: wherein R1 and R2 at each occurrence are independently a C1-C5000 alkyl group; R3 at each occurrence is independently hydrogen or a C1-C5000 alkyl group; R4 is a C1-C50 alkyl group or an unsubstituted or substituted phenyl group; R5 at each occurrence is independently hydrogen or a C1-C30 alkyl group; n is 1, 2, 3, or 4; and m+n is 5. Processes for preparing compounds of formula (F-I) as well as base stock and lubricant compositions containing compounds of formula (F-I) are also provided.
    Type: Grant
    Filed: July 31, 2020
    Date of Patent: June 22, 2021
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Kyle G. Lewis, Beth A. Fitch, Wenning W. Han
  • Patent number: 11041030
    Abstract: In at least one embodiment, a process of forming a polymer includes supplying a feed having one or more olefin monomers and a solvent; contacting the feed with a catalyst to form a reaction mixture; treating the reaction mixture in a first separator to form a first polymer-rich mixture; introducing the first polymer-rich mixture into a second separator; introducing a volatile component and/or inert component into the first separator, the second separator and/or a line between the first separator and the second separator; treating the first polymer-rich mixture to form a second polymer-rich mixture; and devolatilizing the second polymer-rich mixture to obtain the polymer.
    Type: Grant
    Filed: August 30, 2019
    Date of Patent: June 22, 2021
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Yu F. Wang, Justin R. Huber
  • Patent number: 11041029
    Abstract: This invention relates to organoaluminum compounds, organoaluminum activator systems, preferably supported, to polymerization catalyst systems containing these activator systems and to polymerization processes utilizing the same. In particular, this invention relates to catalyst systems comprising a support, an organoaluminum compound and a metallocene.
    Type: Grant
    Filed: August 10, 2016
    Date of Patent: June 22, 2021
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Matthew W. Holtcamp, Gregory S. Day, John R. Hagadorn, Patrick J. Palafox, Ramyaa Mathialagan, Jo Ann M. Canich
  • Patent number: 11041031
    Abstract: The present disclosure provides borate or aluminate activators comprising cations having branched alkyl groups, catalyst systems comprising, and methods for polymerizing olefins using such activators.
    Type: Grant
    Filed: April 25, 2019
    Date of Patent: June 22, 2021
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Catherine A. Faler, Margaret T. Whalley, John R. Hagadorn
  • Patent number: 11041035
    Abstract: The present disclosure provides methods for producing an olefin polymer including: i) contacting alpha-olefin with a first catalyst system comprising a first non-metallocene catalyst, a first activator, and a reversible chain transfer agent to form a first polymer; ii) contacting the first polymer with a coupling agent in the presence of a catalyst, an activator; and iii) obtaining a second polymer. The present disclosure further provides polymers having a g?vis value from about 0.4 to about 0.8 and a vinyl unsaturation content of 0.8 or greater vinyls/1000 carbons, and preferably low gel content.
    Type: Grant
    Filed: March 1, 2019
    Date of Patent: June 22, 2021
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: John R. Hagadorn, Jo Ann M. Canich, Jingwen Zhang, Peijun Jiang, Britni J. Brobey
  • Patent number: 11041036
    Abstract: A process including contacting one or more monomers, at least one catalyst system, and a condensing agent including a majority of propane under polymerizable conditions to produce a polyolefin polymer is provided.
    Type: Grant
    Filed: September 7, 2017
    Date of Patent: June 22, 2021
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventor: Richard B. Pannell
  • Patent number: 11034819
    Abstract: Disclosed are self-assembled propylene-based bi-layer compositions having a skin layer comprising a propylene-based elastomer-toughened composition and a core layer comprising a propylene-based fiber-reinforced composition, wherein the propylene-based elastomer-toughened composition and propylene-based fiber-reinforced composition self-assemble upon mixing into the skin layer and the core layer. Processes for producing these self-assembled propylene-based compositions are also disclosed.
    Type: Grant
    Filed: December 21, 2016
    Date of Patent: June 15, 2021
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Andy H. Tsou, John R. Hagadorn, Viktor Buchholz, Peijun Jiang
  • Patent number: 11034827
    Abstract: Heterophasic copolymers of propylene and an alpha olefin comonomer having a matrix phase and a fill phase, particularly, a heterophasic copolymer having a high fill phase content (greater than or equal to 50%), are provided herein. Polymerization methods and catalyst systems for producing such heterophasic copolymers are also provided.
    Type: Grant
    Filed: April 9, 2019
    Date of Patent: June 15, 2021
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Lubin Luo, Xin Chen, Yen-Hao Lin, Anupriya Jain, Matthew S. Bedoya, Medrado M. Leal, Rebecca C. Savage, Rachel G. Terry, Sergey Yakovlev
  • Patent number: 11028196
    Abstract: A composition comprising vinyl-terminated polyethylene having an Mn from about 200 g/mol to about 10,000 g/mol; and a comb polyolefin having polyethylene arms attached to a random copolymer backbone, said backbone including units derived from an alpha-olefin having 3 or more carbon atoms, where the polyethylene arms have an Mn from about 200 g/mol to about 10,000 g/mol, and where the comb polyolefin has an Mp from about 7,500 to about 400,000 g/mol.
    Type: Grant
    Filed: November 16, 2018
    Date of Patent: June 8, 2021
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Andy H. Tsou, Narayanaswami Dharmarajan, Crisita Carmen H. Atienza, Jian Yang
  • Patent number: 11028327
    Abstract: Systems and methods are provided for performing a partial trip for an ethane steam cracker while reducing or minimizing ethane consumption in a ground flare system during the partial trip. In particular, a trip system is provided that reduces the firing on an ethylene furnace (such as a reduction into a range of 10% to 40% of normal firing) while also providing a reduced flow of feed to the furnace with dilution steam at a steam to hydrocarbon ratio similar to a ratio that is suitable during normal operation. The trip system can be actuated, for example, when the loss of circulating quench water to the water quench tower is detected.
    Type: Grant
    Filed: July 23, 2019
    Date of Patent: June 8, 2021
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Gregory E. Yeo, Jennifer L. Port, Philippe J. Le Roy
  • Patent number: 11028197
    Abstract: In at least one embodiment, a process to produce a poly alpha-olefin (PAO) includes introducing a first alpha-olefin to a first catalyst system comprising activator and a metallocene compound into a continuous stirred tank reactor or a continuous tubular reactor under first reactor conditions to form a first reactor effluent. The first alpha-olefin is introduced to the reactor at a flow rate of about 100 g/hr or more. The first reactor effluent includes at least 60 wt % of PAO dimer and 40 wt % or less of higher oligomers, where the higher oligomers are oligomers that have a degree of polymerization of 3 or more. The process includes introducing the first reactor effluent and a second alpha-olefin to a second catalyst composition including an acid catalyst in a second reactor to form a second reactor effluent comprising PAO trimer.
    Type: Grant
    Filed: August 9, 2019
    Date of Patent: June 8, 2021
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Patrick C. Chen, Mark H. Li, Jennifer L. Rapp, Pramod J. Nandapurkar, Brian H. Wahn, Babak LotfizadehDehkordi, Craig J. Emett, Najeeb M. Kuzhiyil, Jian Yang
  • Patent number: 11028192
    Abstract: This invention relates to a process to polymerize olefins comprising contacting, in solution phase at a temperature of 60° C. to 200° C., ethylene, and at least one olefin comonomer with a catalyst system comprising a non-coordinating anion activator and a metallocene catalyst compound, preferably represented by the formula: and 2) obtaining ethylene polymer having an Mw greater than 100,000 g/mol, preferably greater tha 400,000 g/mol.
    Type: Grant
    Filed: February 12, 2018
    Date of Patent: June 8, 2021
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Donna J. Crowther, Hua Zhou, Jacqueline A. Lovell
  • Patent number: 11021552
    Abstract: The present disclosure provides methods for preparing a catalyst system comprising contacting in an aliphatic solvent at least one support material, at least one hydrocarbyl aluminum compound and at least one non-hydrolytic active oxygen-containing compound to form a supported alumoxane (catalyst system precursor) and contacting the supported alumoxane with at least one catalyst compound having a Group 3 through Group 12 metal atom or lanthanide metal atom. The supported alumoxane may be heated prior to contact with the catalyst compound.
    Type: Grant
    Filed: September 17, 2018
    Date of Patent: June 1, 2021
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Charles J. Harlan, Steven C. Haas, Lubin Luo, Francis C. Rix, Xuan Ye
  • Patent number: 11021553
    Abstract: The present disclosure generally relates to processes to produce alpha-olefin oligomers and poly alpha-olefins. In an embodiment, the present disclosure provides a process to produce a poly alpha-olefin (PAO), the process including: introducing a C6-C32 alpha-olefin and a catalyst system comprising activator and a metallocene compound into a continuous stirred tank reactor or a continuous tubular reactor under reaction conditions, wherein the alpha-olefin is introduced to the reactor at a flow rate of about 100 g/hr or more; and obtaining a product comprising PAO dimer and optional higher oligomers of alpha-olefin, or a combination thereof, the PAO dimer comprising 96 mol % or more of vinylidene, based on total moles of vinylidene, disubstituted vinylene, and trisubstituted vinylene in the product. In at least one embodiment, a process includes functionalizing and/or hydrogenating a PAO product of the present disclosure. In at least one embodiment, a blend includes a PAO product of the present disclosure.
    Type: Grant
    Filed: August 9, 2019
    Date of Patent: June 1, 2021
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Patrick C. Chen, Jennifer L. Rapp, Jian Yang, Jo Ann M. Canich, Hua Zhou, Craig J. Emett, Kyle G. Lewis, Babak LotfizadehDehkordi
  • Patent number: 11014883
    Abstract: Disclosed are novel processes for the production of cyclic imide compounds such as N-hydroxyphthalimide (NHPI). The processes may be particularly well-suited for commercial-scale production of cyclic imides such as NHPI. Such cyclic imide compounds are suitable for use as oxidation catalysts, and specifically may be used to oxidize cyclohexylbenzene to cyclohexyl-1-phenyl-1-hydroperoxide. Such an oxidation may be particularly useful in a process for the production of phenol and/or cyclohexanone from benzene via a process comprising hydroalkylation of benzene to cyclohexylbenzene, oxidation of the cyclohexylbenzene to cyclohexyl-1-phenyl-1-hydroperoxide, and cleavage of the cyclohexyl-1-phenyl-1-hydroperoxide to phenol and cyclohexanone. The cyclic imide production process may advantageously include water washing and reactant recovery steps to maximize purity and yield.
    Type: Grant
    Filed: April 18, 2017
    Date of Patent: May 25, 2021
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Jörg F. W. Weber, Helge Jaensch, Andrew R. Witt, Christopher L. Becker, Kirk C. Nadler, Kendele S. Galvan, Amy B. Batton
  • Patent number: 11015001
    Abstract: Catalyst systems including a catalyst compound having a Group 3 through Group 12 metal atom or lanthanide metal atom, an activator, and a support material composition, are provided. The support material composition may have a volume percent of pores with a pore size of from 300 angstroms to 1500 angstroms of 10 vol % to 80 vol %. Processes for producing a polyolefin composition utilizing such catalyst systems are also provided.
    Type: Grant
    Filed: April 11, 2018
    Date of Patent: May 25, 2021
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Xuan Ye, Lubin Luo, Charles J. Harlan, Chi-I Kuo, Richard B. Pannell, William A. Lamberti
  • Patent number: 11015002
    Abstract: Polymerization processes to produce polyolefin polymers, for example, polyethylene polymers, from catalyst systems comprising one or more olefin polymerization catalysts and at least one activator are provided. The polyolefin polymers may have a Broad Orthogonal Composition Distribution (BOCD).
    Type: Grant
    Filed: November 14, 2018
    Date of Patent: May 25, 2021
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Donna J. Crowther, Timothy M. Boller, Richard B. Pannell, Jeanette M. Diop, Wen Li
  • Patent number: 11015008
    Abstract: Disclosed is the preparation of thermoplastic vulcanizates with reduced crosslinked rubber dispersion sizes and dispersity. The thermoplastic vulcanizates include a polypropylene matrix phase in which cross-linked rubber particles are dispersed. The thermoplastic vulcanizates include the reaction product of a mixture that includes at least 10 wt % of isotactic polypropylene at least 30 wt % of an amorphous propylene-ethylene-diene terpolymer containing at least 60 wt % propylene-derived units and less than or equal to 25 wt % of ethylene-derived units; at least 10 wt % of a diluent and at least 0.015 wt % of at least one curative. The mixture is preferably formed without adding an ethylene-propylene-diene terpolymer.
    Type: Grant
    Filed: March 18, 2019
    Date of Patent: May 25, 2021
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Sudhin Datta, Andy H. Tsou, Ron Walker, Krishnan Anantha Narayana Iyer, Rhutesh K. Shah, Hamidreza Khakdaman, Sebastian Vasquez, Feng Li
  • Patent number: 11008449
    Abstract: The present disclosure provides catalyst systems having a bridged metallocene compound and a transition metal pyridyldiamide compound for use in alkene polymerization to produce multimodal polyolefins, such as multimodal ethylene, propylene, diene monomer copolymers. In some embodiments, the present disclosure provides for polyolefins and processes for producing a polyolefin composition including contacting at least one olefin with a catalyst system of the present disclosure.
    Type: Grant
    Filed: October 5, 2018
    Date of Patent: May 18, 2021
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Andy H. Tsou, John R. Hagadorn