Patents by Inventor Peijun Jiang

Peijun Jiang 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).

  • Patent number: 11059918
    Abstract: This invention relates bisindenyl metallocene catalyst compounds having long (at least 4 carbon atoms) linear alkyl groups substituted at the two position and substituted or unsubstituted aryl groups at the four position and process using such catalyst compounds, particularly in the solution process at higher temperatures.
    Type: Grant
    Filed: May 27, 2016
    Date of Patent: July 13, 2021
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Jian Yang, Peijun Jiang, Xiongdong Lian
  • 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: 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: 10995170
    Abstract: This invention relates to the use of pyridyldiamido and/or quinolinyldiamido transition metal complexes and catalyst systems with an activator and a metal hydrocarbenyl chain transfer agent, such as an aluminum vinyl-transfer agent (AVTA), to produce branched ethylene copolymers, preferably ethylene-butene, ethylene-hexene and ethylene-octene copolymers.
    Type: Grant
    Filed: April 27, 2020
    Date of Patent: May 4, 2021
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Jo Ann M. Canich, John R. Hagadorn, Peijun Jiang
  • Publication number: 20210107930
    Abstract: This invention relates homogeneous (typically solution) polymerization of propylene and optional olefin comonomer using metallocene catalyst compounds having a 1,5,6,7-tetrahydro-s-indacenyl moiety bridged to another indacenyl moiety or bridged to a substituted or unsubstituted indenyl moiety.
    Type: Application
    Filed: October 9, 2020
    Publication date: April 15, 2021
    Inventors: Jian Yang, Peijun Jiang
  • Patent number: 10927196
    Abstract: The present disclosure provides the use of quinolinyldiamido transition metal complexes, an activator and a metal hydrocarbenyl chain transfer agent, such as an aluminum vinyl-transfer agent, to produce long chain branched propylene polymers.
    Type: Grant
    Filed: July 3, 2018
    Date of Patent: February 23, 2021
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: John R. Hagadorn, Jo Ann M. Canich, Peijun Jiang, Maksim E. Shivokhin
  • Publication number: 20210040242
    Abstract: The present disclosure provides the use of quinolinyldiamido transition metal complexes, an activator and a metal hydrocarbenyl chain transfer agent, such as an aluminum vinyl-transfer agent, to produce long chain branched propylene polymers.
    Type: Application
    Filed: October 15, 2020
    Publication date: February 11, 2021
    Inventors: John R. Hagadorn, Jo Ann M. Canich, Peijun Jiang, Maksim E. Shivokhin
  • Publication number: 20210040250
    Abstract: In some embodiments, ethylene-propylene random copolymers as viscosity modifiers were synthesized with pyridyldiamido catalyst systems and a chain transfer agent. In some embodiments, the present disclosure provides for ethylene-propylene random copolymers having an ethylene content between about 45 wt % and about 55 wt %. In some embodiments, the ethylene-propylene random copolymer is used as a viscosity modifier in a lubricating composition and a fuel composition.
    Type: Application
    Filed: March 7, 2019
    Publication date: February 11, 2021
    Inventors: Jingwen ZHANG, John R. HAGADORN, Rainer KOLB, Jo Ann M. CANICH, Maksim SHIVOKHIN, Peijun JIANG, Britni J. BROBEY
  • Publication number: 20200407474
    Abstract: In some embodiments, ethylene-propylene branched copolymers are synthesized with pyridyldiamido catalysts and a chain transfer agent, and their performance as viscosity modifiers in oil are detailed. In some embodiments, the present disclosure provides for ethylene-propylene branched copolymers having a shear thinning onset of less than about 0.01 rad/s and an HTHS value of less than about 3.3. In some embodiments, the ethylene-propylene branched copolymer is used as a viscosity modifier in a lubricating composition and a fuel composition.
    Type: Application
    Filed: March 7, 2019
    Publication date: December 31, 2020
    Inventors: Jingwen ZHANG, John R. HAGADORN, Jo Ann M. CANICH, Peijun JIANG, Britni J. BROBEY, Maksim SHIVOKHIN
  • Patent number: 10836853
    Abstract: A crack-resistant article comprising a diene terpolymer, the diene terpolymer comprising (or consisting essentially of) from 0.01 wt % to 10.0 wt % diene derived units, and 1.0 wt % to 20 wt % of C4 to C10 ?-olefin derived units based on the weight of the diene terpolymer, wherein the diene terpolymer: a) has a g?vis of less than 0.90; b) has an Mw within a range of from 100,000 g/mol to 500,000 g/mol; c) has an Mw/Mn within the range of from 3.5 to 12.0; and d) an Mz/Mn of greater than 7.0. Inventive articles comprise a blend of a relatively high density linear polyethylene and the diene terpolymer.
    Type: Grant
    Filed: January 14, 2015
    Date of Patent: November 17, 2020
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Jianya Cheng, Pradeep P. Shirodkar, Peijun Jiang, Andrew Takacs
  • Patent number: 10822479
    Abstract: A foamable or foamed article comprising a diene terpolymer, the diene terpolymer comprising (or consisting essentially of) from 0.01 wt % to 10.0 wt % diene derived units, and 1.0 wt % to 20 wt % of C4 to C10 ?-olefin derived units based on the weight of the diene terpolymer, wherein the diene terpolymer: a) has a g?vis of less than 0.90; b) has an Mw within a range of from 100,000 g/mol to 500,000 g/mol; c) has an Mw/Mn within the range of from 3.5 to 12.0; and d) an Mz/Mn of greater than 7.0. Inventive articles comprise a blend of a relatively high density linear polyethylene and the diene terpolymer.
    Type: Grant
    Filed: January 14, 2015
    Date of Patent: November 3, 2020
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Pradeep P. Shirodkar, Jianya Cheng, Joseph M. Tomei, Peijun Jiang, Arturo Leyva
  • Patent number: 10815318
    Abstract: Quinolinyldiamido transition metal complexes are disclosed for use in alkene polymerization to produce multimodal polyolefins.
    Type: Grant
    Filed: February 12, 2019
    Date of Patent: October 27, 2020
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: John R. Hagadorn, Patrick J. Palafox, Peijun Jiang, Yaohua Gao, Xin Chen, Georgy P. Goryunov, Mikhail I. Sharikov, Dmitry V. Uborsky, Alexander Z. Voskoboynikov
  • Patent number: 10808049
    Abstract: Processes are provided which include copolymerization using two different metallocene catalysts, one capable of producing high Mooney-viscosity polymers and one suitable for producing lower Mooney-viscosity polymers having at least a portion of vinyl terminations. The two catalysts may be used together in polymerization to produce copolymer compositions of particularly well-tuned properties. For instance, polymerizations are contemplated to produce high-Mooney metallocene polymers that exhibit excellent processability and elasticity, notwithstanding their high Mooney viscosity. Other polymerizations are also contemplated in which lower-Mooney metallocene polymers are produced, which also exhibit excellent processability and elasticity, while furthermore having excellent cure properties suitable in curable elastomer compound applications.
    Type: Grant
    Filed: June 14, 2017
    Date of Patent: October 20, 2020
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Francis C. Rix, Rhutesh K. Shah, Rainer Kolb, Jo Ann M. Canich, Peijun Jiang, Periagaram S. Ravishankar, Syamal Tallury, Narayanaswami Dharmarajan
  • Publication number: 20200293551
    Abstract: A data replication method and a storage system are provided. The method is applied to a storage system including a first storage device and a second storage device. According to the method, after determining replication information, a first storage system determines a first replication sub-information and a second replication sub-information according to the replication information, where the replication information is used to indicate data. that needs to be replicated by the first storage system to a second storage system in a current replication task. Then, the first storage device replicates data to the second storage system according to the second replication sub-information, and the second storage device replicates data to the second storage system according to the second replication sub-information.
    Type: Application
    Filed: May 29, 2020
    Publication date: September 17, 2020
    Inventors: Yijia CHEN, Ji OUYANG, Peijun JIANG
  • Publication number: 20200277427
    Abstract: Compositions are provided which include blends of (A) branched and/or bimodal ethylene copolymers and (B) linear ethylene copolymers. The branched and/or bimodal ethylene copolymers may be produced using a dual metallocene catalyst system comprising two different metallocene catalysts: one capable of producing high Mooney-viscosity polymers and one suitable for producing polymers having at least a portion of vinyl terminations. The linear ethylene copolymers may be produced using a metallocene catalyst capable of producing high Mooney-viscosity polymers, which may be the same as such catalyst of the dual metallocene catalyst system. Processes for making such blends, including parallel and/or series polymerization processes, are also provided. The blends may have excellent cure properties suitable in curable rubber compound applications.
    Type: Application
    Filed: June 14, 2017
    Publication date: September 3, 2020
    Inventors: Narayanaswami Dharmarajan, Francis C, Rix, Jo Ann M. Canich, Danica L. Nguyen, Peijun Jiang, Rhutesh K. Shah
  • Patent number: 10761731
    Abstract: Application relates to storage technologies, and in particular, to writing data in a storage system having solid state disks. Embodiments of the application provide an array controller, including a communication interface and a processor. The processor receives information about a logical block from a solid state disk. The information about the logical block includes a size of the logical block and indication information of the logical block, and the logical block includes one or more physical blocks. The processor sends multiple write data requests to the solid state disk. Each write data request includes data, and each write data request instructs the solid state disk to write the data into the logical block indicated by the indication information of the logical block. A total size of data included in the multiple write data requests is equivalent to the size of the logical block.
    Type: Grant
    Filed: February 6, 2018
    Date of Patent: September 1, 2020
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Peijun Jiang, Qiang Xue, Keji Huang
  • Publication number: 20200255562
    Abstract: This invention relates to the use of pyridyldiamido and/or quinolinyldiamido transition metal complexes and catalyst systems with an activator and a metal hydrocarbenyl chain transfer agent, such as an aluminum vinyl-transfer agent (AVTA), to produce branched ethylene copolymers, preferably ethylene-butene, ethylene-hexene and ethylene-octene copolymers.
    Type: Application
    Filed: April 27, 2020
    Publication date: August 13, 2020
    Inventors: Jo Ann M. Canich, John R. Hagadorn, Peijun Jiang
  • Publication number: 20200231710
    Abstract: This invention relates to a polymerization process for forming polymer comprising: contacting (typically in a solution or slurry phase), a monomer and a catalyst system in a reaction zone comprising at least one spiral heat exchanger and recovering polymer, wherein the monomer, the catalyst system and the polymer flow through the at least one spiral heat exchanger in a cross-flow direction relative to spirals of the at least one spiral heat exchanger.
    Type: Application
    Filed: August 19, 2016
    Publication date: July 23, 2020
    Inventors: Jay L. Reimers, Kevin W. Lawson, Peijun Jiang, Gabor Kiss
  • Publication number: 20200223951
    Abstract: Processes are provided which include copolymerization using two different metallocene catalysts, one capable of producing high Mooney-viscosity polymers and one suitable for producing lower Mooney-viscosity polymers having at least a portion of vinyl terminations. The two catalysts may be used together in polymerization to produce copolymer compositions of particularly well-tuned properties. For instance, polymerizations are contemplated to produce high-Mooney metallocene polymers that exhibit excellent processability and elasticity, notwithstanding their high Mooney viscosity. Other polymerizations are also contemplated in which lower-Mooney metallocene polymers are produced, which also exhibit excellent processability and elasticity, while furthermore having excellent cure properties suitable in curable elastomer compound applications.
    Type: Application
    Filed: June 14, 2017
    Publication date: July 16, 2020
    Inventors: Francis C. Rix, Rhutesh K. Shah, Rainer Kolb, Jo Ann M. Canich, Peijun Jiang, Periagaram S. Ravishankar, Syamal Tallury, Narayanaswami Dharmarajan
  • Patent number: 10706072
    Abstract: A data replication method and a storage system are provided. The method is applied to a storage system including a first storage device and a second storage device. According to the method, after determining replication information, a first storage system determines a first replication sub-information and a second replication sub-information according to the replication information, where the replication information is used to indicate data that needs to be replicated by the first storage system to a second storage system in a current replication task. Then, the first storage device replicates data to the second storage system according to the second replication sub-information, and the second storage device replicates data to the second storage system according to the second replication sub-information. According to the data replication method, efficiency of replication performed between the first storage system and the second storage system can be improved.
    Type: Grant
    Filed: December 19, 2019
    Date of Patent: July 7, 2020
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Yijia Chen, Ji Ouyang, Peijun Jiang