Patents by Inventor Errun Ding

Errun Ding 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).

  • Metallocene and Half Sandwich Dual Catalyst Systems for Producing Broad Molecular Weight Distribution Polymers
    Publication number: 20150011381
    Abstract: Disclosed herein are polymerization processes for the production of olefin polymers. These polymerization processes can use a dual catalyst system containing a zirconium or hafnium based metallocene compound and a titanium based half-metallocene compound containing an indenyl group.
    Type: Application
    Filed: September 23, 2014
    Publication date: January 8, 2015
    Inventors: Errun Ding, Qing Yang, Youlu Yu, Lloyd W. Guatney, Jim B. Askew
  • Metallocene and half sandwich dual catalyst systems for producing broad molecular weight distribution polymers
    Patent number: 8865846
    Abstract: Disclosed herein are polymerization processes for the production of olefin polymers. These polymerization processes can use a dual catalyst system containing a zirconium or hafnium based metallocene compound and a titanium based half-metallocene compound containing an indenyl group.
    Type: Grant
    Filed: September 25, 2012
    Date of Patent: October 21, 2014
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Errun Ding, Qing Yang, Youlu Yu, Lloyd W. Guatney, Jim B. Askew
  • Use of hydrogen scavenging catalysts to control polymer molecular weight and hydrogen levels in a polymerization reactor
    Patent number: 8835588
    Abstract: The present invention provides dual catalyst systems containing a metallocene catalyst and a hydrogen scavenging catalyst, and polymerization processes employing these dual catalyst systems. Due to a reduction in hydrogen levels in the polymerization processes, olefin polymers produced from these polymerization processes may have a higher molecular weight, a lower melt index, and higher levels of unsaturation.
    Type: Grant
    Filed: June 26, 2013
    Date of Patent: September 16, 2014
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Rex E. Murray, William B. Beaulieu, Qing Yang, Errun Ding, Gary L. Glass, Alan L. Solenberger, Steve J. Secora
  • Use of hydrogen and an organozinc compound for polymerization and polymer property control
    Patent number: 8829125
    Abstract: Methods of controlling polymerization reactions using a synergistic amount of hydrogen and an organozinc compound are disclosed. The resulting polymers have lower molecular weights and higher melt flow indices.
    Type: Grant
    Filed: June 26, 2013
    Date of Patent: September 9, 2014
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Errun Ding, Qing Yang, Albert P. Masino, Youlu Yu, Lloyd W. Guatney, Jim B. Askew
  • Catalyst systems and polymer resins having improved barrier properties
    Patent number: 8828529
    Abstract: A unimodal polymeric resin having a density of from about 0.946 g/ml to about 0.97 g/ml and a zero shear viscosity of from about 8×102 Pa-s to about 6×104 Pa-s. A method comprising (a) providing a catalyst system comprising a half-sandwich transition metal complex; (b) contacting the catalyst system with an olefin under conditions suitable to form a polyolefin, wherein the polyolefin is unimodal; and (c) recovering the polyolefin, wherein the polyolefin has a density of from about 0.946 g/ml to about 0.97 g/ml and a zero shear viscosity of from about 8×102 Pa-s to about 6×104 Pa-s. A unimodal polymeric resin having a density of from about 0.946 g/ml to about 0.97 g/ml and a CY-a parameter of from about 0.5 to about 0.6.
    Type: Grant
    Filed: September 24, 2010
    Date of Patent: September 9, 2014
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Guylaine St. Jean, Errun Ding, Chung Tso, Qing Yang, Albert P. Masino, Joel L. Martin
  • Half-Metallocene Compounds and Catalyst Compositions
    Publication number: 20140243491
    Abstract: The present invention provides polymerization catalyst compositions employing half-metallocene compounds with a heteroatom-containing ligand bound to the transition metal. Methods for making these hybrid metallocene compounds and for using such compounds in catalyst compositions for the polymerization of olefins also are provided.
    Type: Application
    Filed: May 14, 2014
    Publication date: August 28, 2014
    Applicant: Chevron Phillips Chemical Company LP
    Inventors: Errun Ding, Joel L. Martin, Albert P. Masino, Qing Yang, Youlu Yu
  • Dual Metallocene Catalyst Systems for Decreasing Melt Index and Increasing Polymer Production Rates
    Publication number: 20140235804
    Abstract: The present invention provides dual catalyst systems and polymerization processes employing these dual catalyst systems. The disclosed polymerization processes can produce olefin polymers at higher production rates, and these olefin polymers may have a higher molecular weight and/or a lower melt index.
    Type: Application
    Filed: April 29, 2014
    Publication date: August 21, 2014
    Applicant: Chevron Phillips Chemical Company LP
    Inventors: Albert P. Masino, Rex E. Murray, Qing Yang, Steve J. Secora, Kumudini C. Jayaratne, William B. Beaulieu, Errun Ding, Gary L. Glass, Alan L. Solenberger, Ted H. Cymbaluk
  • Half-metallocene compounds and catalyst compositions
    Patent number: 8759246
    Abstract: The present invention provides polymerization catalyst compositions employing half-metallocene compounds with a heteroatom-containing ligand bound to the transition metal. Methods for making these hybrid metallocene compounds and for using such compounds in catalyst compositions for the polymerization of olefins also are provided.
    Type: Grant
    Filed: October 3, 2012
    Date of Patent: June 24, 2014
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Errun Ding, Joel L. Martin, Albert P. Masino, Qing Yang, Youlu Yu
  • Dual metallocene catalyst systems for decreasing melt index and increasing polymer production rates
    Patent number: 8748546
    Abstract: The present invention provides dual catalyst systems and polymerization processes employing these dual catalyst systems. The disclosed polymerization processes can produce olefin polymers at higher production rates, and these olefin polymers may have a higher molecular weight and/or a lower melt index.
    Type: Grant
    Filed: May 7, 2013
    Date of Patent: June 10, 2014
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Albert P. Masino, Rex E. Murray, Qing Yang, Steve J. Secora, Kumudini C. Jayaratne, William B. Beaulieu, Errun Ding, Gary L. Glass, Alan L. Solenberger, Ted H. Cymbaluk
  • Low Density Polyolefin Resins and Films Made Therefrom
    Publication number: 20140128563
    Abstract: Disclosed herein are broad molecular weight distribution olefin polymers having densities in the 0.895 to 0.930 g/cm3 range, and with improved impact and tear resistance. These polymers can have a ratio of Mw/Mn in the 8 to 35 range, a high load melt index in the 4 to 50 range, less than about 0.008 LCB per 1000 total carbon atoms, and a reverse comonomer distribution.
    Type: Application
    Filed: November 6, 2013
    Publication date: May 8, 2014
    Applicant: Chevron Phillips Chemical Company LP
    Inventors: Max P. McDaniel, Ashish M. Sukhadia, Errun Ding, Chung Ching Tso, Albert P. Masino, Qing Yang, Lloyd W. Guatney, Guylaine St. Jean, Daniel G. Hert
  • Catalyst systems and polymer resins having improved barrier properties
    Patent number: 8703972
    Abstract: A catalyst system comprising a half-sandwich chromium complex, an activator support and an optional cocatalyst. A compound of formula Cp?Cr(Cl)2(Ln), where Cp? is ?5-C5H4CH2CH2CH?CH2 and Ln is pyridine, THF or diethylether. A compound of formula Cp?Cr(Cl)2(Ln), where Cp? is ?5-C5H4C(Me)2CH2CH2CH?CH2 and Ln is pyridine, THF or diethylether.
    Type: Grant
    Filed: April 11, 2013
    Date of Patent: April 22, 2014
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Errun Ding, Albert P. Masino, Joel L. Martin, Youlu Yu
  • Metallocene and Half Sandwich Dual Catalyst Systems for Producing Broad Molecular Weight Distribution Polymers
    Publication number: 20140088274
    Abstract: Disclosed herein are polymerization processes for the production of olefin polymers. These polymerization processes can use a dual catalyst system containing a zirconium or hafnium based metallocene compound and a titanium based half-metallocene compound containing an indenyl group.
    Type: Application
    Filed: September 25, 2012
    Publication date: March 27, 2014
    Applicant: CHEVRON PHILLIPS CHEMICAL COMPANY LP
    Inventors: Errun Ding, Qing Yang, Youlu Yu, Lloyd W. Guatney, Jim B. Askew
  • Methods for controlling dual catalyst olefin polymerizations with an organozinc compound
    Patent number: 8680218
    Abstract: Methods for controlling properties of an olefin polymer using an organozinc compound are disclosed. The HLMI/MI shear ratio of the polymer can be decreased and the Mz/Mw ratio of the polymer can be increased via the addition of the organozinc compound.
    Type: Grant
    Filed: January 30, 2013
    Date of Patent: March 25, 2014
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Qing Yang, Max P. McDaniel, Errun Ding, Ted H. Cymbaluk, Tony R. Crain, Gary L. Glass
  • Use of Hydrogen Scavenging Catalysts to Control Polymer Molecular Weight and Hydrogen Levels in a Polymerization Reactor
    Publication number: 20130324690
    Abstract: The present invention provides dual catalyst systems containing a metallocene catalyst and a hydrogen scavenging catalyst, and polymerization processes employing these dual catalyst systems. Due to a reduction in hydrogen levels in the polymerization processes, olefin polymers produced from these polymerization processes may have a higher molecular weight, a lower melt index, and higher levels of unsaturation.
    Type: Application
    Filed: June 26, 2013
    Publication date: December 5, 2013
    Inventors: Rex E. Murray, William B. Beaulieu, Qing Yang, Errun Ding, Gary L. Glass, Alan L. Solenberger, Steve J. Secora
  • Use of Hydrogen and an Organozinc Compound for Polymerization and Polymer Property Control
    Publication number: 20130289226
    Abstract: Methods of controlling polymerization reactions using a synergistic amount of hydrogen and an organozinc compound are disclosed. The resulting polymers have lower molecular weights and higher melt flow indices.
    Type: Application
    Filed: June 26, 2013
    Publication date: October 31, 2013
    Inventors: Errun Ding, Qing Yang, Albert P. Masino, Youlu Yu, Lloyd W. Guatney, Jim B. Askew
  • Dual Metallocene Catalyst Systems for Decreasing Melt Index and Increasing Polymer Production Rates
    Publication number: 20130245210
    Abstract: The present invention provides dual catalyst systems and polymerization processes employing these dual catalyst systems. The disclosed polymerization processes can produce olefin polymers at higher production rates, and these olefin polymers may have a higher molecular weight and/or a lower melt index.
    Type: Application
    Filed: May 7, 2013
    Publication date: September 19, 2013
    Applicant: Chevron Philips Chemical Company LP
    Inventors: Albert P. Masino, Rex E. Murray, Qing Yang, Steve J. Secora, Kumudini C. Jayaratne, William B. Beaulieu, Errun Ding, Gary L. Glass, Alan L. Solenberger, Ted H. Cymbaluk
  • Use of hydrogen scavenging catalysts to control polymer molecular weight and hydrogen levels in a polymerization reactor
    Patent number: 8501654
    Abstract: The present invention provides dual catalyst systems containing a metallocene catalyst and a hydrogen scavenging catalyst, and polymerization processes employing these dual catalyst systems. Due to a reduction in hydrogen levels in the polymerization processes, olefin polymers produced from these polymerization processes may have a higher molecular weight, a lower melt index, and higher levels of unsaturation.
    Type: Grant
    Filed: June 5, 2012
    Date of Patent: August 6, 2013
    Assignee: Chevron Philips Chemical Company LP
    Inventors: Rex E. Murray, William B. Beaulieu, Qing Yang, Errun Ding, Gary L. Glass, Alan L. Solenberger, Steven J. Secora
  • Catalyst systems and polymer resins having improved barrier properties
    Patent number: 8501651
    Abstract: A catalyst system comprising a half-sandwich chromium complex, an activator support and an optional cocatalyst. A compound of formula Cp?Cr(Cl)2(Ln), where Cp? is ?5—C5H4CH2CH2CH?CH2 and Ln is pyridine, THF or diethylether. A compound of formula Cp?Cr(Cl)2(Ln), where Cp? is ?5—C5H4C(Me)2CH2CH2CH?CH2 and Ln is pyridine, THF or diethylether.
    Type: Grant
    Filed: September 24, 2010
    Date of Patent: August 6, 2013
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Errun Ding, Albert P. Masino, Joel L. Martin, Youlu Yu
  • Use of hydrogen and an organozinc compound for polymerization and polymer property control
    Patent number: 8501882
    Abstract: Methods of controlling polymerization reactions using a synergistic amount of hydrogen and an organozinc compound are disclosed. The resulting polymers have lower molecular weights and higher melt flow indices.
    Type: Grant
    Filed: December 19, 2011
    Date of Patent: August 6, 2013
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Errun Ding, Qing Yang, Albert P. Masino, Youlu Yu, Lloyd W. Guatney, Jim B. Askew
  • Use of Hydrogen and an Organozinc Compound for Polymerization and Polymer Property Control
    Publication number: 20130158216
    Abstract: Methods of controlling polymerization reactions using a synergistic amount of hydrogen and an organozinc compound are disclosed. The resulting polymers have lower molecular weights and higher melt flow indices.
    Type: Application
    Filed: December 19, 2011
    Publication date: June 20, 2013
    Applicant: CHEVRON PHILLIPS CHEMICAL COMPANY LP
    Inventors: Errun Ding, Qing Yang, Albert P. Masino, Youlu Yu, Lloyd W. Guatney, Jim B. Askew