Patents by Inventor Tae Hoon Kwalk

Tae Hoon Kwalk 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: 20180171049
    Abstract: Methods for making a high density polyethylene composition are provided. The methods can include contacting ethylene and at least one non-ethylene comonomer with a catalyst system in a gas phase reactor in the presence of hydrogen at an ethylene partial pressure of 100 psi or more to produce a polyethylene copolymer. In one or more embodiments, the catalyst system can include one or more bis amides. The resulting polyethylene copolymer can have a density of about 0.945 g/cm3 or more; a melt index (I2) of about 5 dg/min to about 50 dg/min; a melt index ratio (I21/I2) of about 20 to about 35; and a molecular weight distribution of about 3.0 to about 10.
    Type: Application
    Filed: November 8, 2017
    Publication date: June 21, 2018
    Inventors: Ching-Tai Lue, Phillip T. Matsunaga, David H. McConville, Tae Hoon Kwalk
  • Patent number: 8742039
    Abstract: A method for making a polyolefin composition according to one embodiment includes altering the concentration of the chain transfer agent present in the reactor to control the HMW and LMW fractions of the polyolefin composition.
    Type: Grant
    Filed: November 19, 2008
    Date of Patent: June 3, 2014
    Assignee: Univation Technologies, LLC
    Inventors: Mark B. Davis, Sun-Chueh Kao, Tae Hoon Kwalk
  • Patent number: 8633286
    Abstract: A catalyst composition that includes a support material having an improved particle-size distribution is provided. Processes for producing polyolefin composition also are provided. Polymers and films also are provided. An example of a catalyst composition is a supported multi-transition-metal catalyst composition that includes: (a) at least two catalyst components selected from the group consisting of: a nonmetallocene catalyst component and a metallocene catalyst component; (b) a support material that has a D50 of less than about 30 microns and a particle size distribution having a D90/D10 ratio of less than about 6; and (c) an activator.
    Type: Grant
    Filed: April 4, 2011
    Date of Patent: January 21, 2014
    Assignee: Univation Technologies, LLC
    Inventors: Chi-I Kuo, Tae Hoon Kwalk, Dongming Li, Porter Clarke Shannon
  • Patent number: 8598287
    Abstract: A process for polymerizing olefin(s) utilizing a cyclic bridged metallocene catalyst system to produce polymers with improved properties is provided. The catalyst system may include a cyclic bridged metallocene, LA(R?SiR?)LBZrQ2, activated by an activator, the activator comprising aluminoxane, a modified aluminoxane, or a mixture thereof, and supported by a support, where: LA and LB are independently an unsubstituted or a substituted cyclopentadienyl ligand bonded to Zr and defined by the formula (C5H4-dRd), where R is hydrogen, a hydrocarbyl substituent, a substituted hydrocarbyl substituent, or a heteroatom substituent, and where d is 0, 1, 2, 3 or 4; LA and LB are connected to one another with a cyclic silicon bridge, R?SiR?, where R? are independently hydrocarbyl or substituted hydrocarbyl substituents that are connected with each other to form a silacycle ring; and each Q is a labile hydrocarbyl or a substituted hydrocarbyl ligand.
    Type: Grant
    Filed: October 9, 2008
    Date of Patent: December 3, 2013
    Assignee: Univation Technologies, LLC
    Inventors: Chi-I Kuo, Dongming Li, Ching-Tai Lue, Francis C. Rix, Mark G Goode, Daniel P. Zilker, Jr., Tae Hoon Kwalk
  • Patent number: 8329835
    Abstract: Polyethylene compositions having improved properties are provided. In one aspect, a polyethylene composition having a long chain branching index (g?avg) of 0.5 to 0.9; a Melt Flow Rate (MFR) of greater than (49.011×MI(?0.4304)), where MI is Melt Index; and a weight average molecular weight to number average molecular weight (Mw/Mn) of less than or equal to 4.6 is provided.
    Type: Grant
    Filed: October 9, 2008
    Date of Patent: December 11, 2012
    Assignee: Univation Technologies, LLC
    Inventors: Mark G. Goode, Rainer Kolb, Chi-I Kuo, Tae Hoon Kwalk, Dongming Li, Ching-Tai Lue, Francis C. Rix, Daniel P. Zilker, Jr.
  • Publication number: 20110184132
    Abstract: A catalyst composition that includes a support material having an improved particle-size distribution is provided. Processes for producing polyolefin composition also are provided. Polymers and films also are provided. An example of a catalyst composition is a supported multi-transition-metal catalyst composition that includes: (a) at least two catalyst components selected from the group consisting of: a nonmetallocene catalyst component and a metallocene catalyst component; (b) a support material that has a D50 of less than about 30 microns and a particle size distribution having a D90/D10 ratio of less than about 6; and (c) an activator.
    Type: Application
    Filed: April 4, 2011
    Publication date: July 28, 2011
    Applicant: UNIVATION TECHNOLOGIES, LLC
    Inventors: Chi-I Kuo, Tae Hoon Kwalk, Dongming Li, Porter Clarke Shannon
  • Publication number: 20110098422
    Abstract: Polyethylene compositions having improved properties are provided. In one aspect, a polyethylene composition having a long chain branching index (g?avg) of 0.5 to 0.9; a Melt Flow Rate (MFR) of greater than (49.011×MI(?0.4304)), where MI is Melt Index; and a weight average molecular weight to number average molecular weight (Mw/Mn) of less than or equal to 4.6 is provided.
    Type: Application
    Filed: October 9, 2008
    Publication date: April 28, 2011
    Applicant: Univation Technologies, LLC
    Inventors: Dongming Li, Mark G Goode, Rainer Kolb, Chi-I Kuo, Tae Hoon Kwalk, Ching-Tai Lue, Francis C. Rix, Daniel P. Zilker, JR.
  • Patent number: 7868092
    Abstract: A bimodal polyethylene composition that includes ethylene-derived units, and, optionally, one or more other olefin-derived units, wherein the bimodal polyethylene composition possesses a density of at least 0.940 g/cc, an average molecular weight (Mw) of from 200,000 to 370,000, a z-average molecular weight (Mz) of from 1,500,000 to 3,400,000 Daltons, and a z+1 average molecular weight (Mz+1) of from 2,500,000 to 6,800,000 Daltons, is provided in various embodiments. Articles made therefrom and methods of making the same are also provided.
    Type: Grant
    Filed: May 15, 2008
    Date of Patent: January 11, 2011
    Assignee: Univation Technologies, LLC
    Inventors: Tae Hoon Kwalk, Stephen Paul Jaker, Sun-Chueh Kao, Mark Bradley Davis, Natarajan Muruganandam, Jo Ann Marie Canich
  • Publication number: 20100298511
    Abstract: A process for polymerizing olefin(s) utilizing a cyclic bridged metallocene catalyst system to produce polymers with improved properties is provided. The catalyst system may include a cyclic bridged metallocene, LA(R?SiR?)LBZrQ2, activated by an activator, the activator comprising aluminoxane, a modified aluminoxane, or a mixture thereof, and supported by a support, where: LA and LB are independently an unsubstituted or a substituted cyclopentadienyl ligand bonded to Zr and defined by the formula (C5H4-dRd), where R is hydrogen, a hydrocarbyl substituent, a substituted hydrocarbyl substituent, or a heteroatom substituent, and where d is 0, 1, 2, 3 or 4; LA and LB are connected to one another with a cyclic silicon bridge, R?SiR?, where R? are independently hydrocarbyl or substituted hydrocarbyl substituents that are connected with each other to form a silacycle ring; and each Q is a labile hydrocarbyl or a substituted hydrocarbyl ligand.
    Type: Application
    Filed: October 9, 2008
    Publication date: November 25, 2010
    Applicant: Univation Technologies, LLC
    Inventors: Chi-I Kuo, Dongming Li, Ching-Tai Lue, Francis C. Rix, Mark G. Goode, Daniel P. Zilker, JR., Tae Hoon Kwalk
  • Publication number: 20100249355
    Abstract: A method for making a polyolefin composition according to one embodiment includes altering the concentration of the chain transfer agent present in the reactor to control the HMW and LMW fractions of the polyolefin composition.
    Type: Application
    Filed: November 19, 2008
    Publication date: September 30, 2010
    Inventors: Mark B. Davis, Sun-Chueh Kao, Tae Hoon Kwalk
  • Patent number: 7560516
    Abstract: Disclosed are various compositions, including but not limited to a high density multimodal polyethylene composition, that has a density of 0.935 g/cc or more, and that includes a blend of a first polyethylene component and a second polyethylene component, in which: the first polyethylene component includes a bimodal polyethylene; and the second polyethylene component includes a unimodal polyethylene that is made from a polymerization conducted in the presence of a metallocene having two cyclopentadienyl rings.
    Type: Grant
    Filed: September 13, 2007
    Date of Patent: July 14, 2009
    Assignee: Univation Technologies, LLC
    Inventor: Tae Hoon Kwalk
  • Patent number: 7504055
    Abstract: Disclosed herein are various processes, including a process for producing a film, comprising (including) forming a film from a blended polyolefin composition at a line speed of at least 170 feet per minute, wherein the blended polyolefin composition comprises: (a) a bimodal polyethylene component that includes a high molecular weight polyethylene component having a high average molecular weight (MWHMW) and a low molecular weight polyethylene component having a low average molecular weight (MWLMW), wherein the ratio of the high average molecular weight to the low average molecular weight (MWHMW:MWLMW) is 20 or more wherein the high and low molecular weight polyethylene components of the bimodal polyethylene component are formed in a single reactor; and (b) a unimodal polyethylene component that occupies more than 15 wt % of the composition.
    Type: Grant
    Filed: October 31, 2007
    Date of Patent: March 17, 2009
    Assignee: Univation Technologies, LLC
    Inventor: Tae Hoon Kwalk
  • Publication number: 20080312380
    Abstract: A bimodal polyethylene composition that includes ethylene-derived units, and, optionally, one or more other olefin-derived units, wherein the bimodal polyethylene composition possesses a density of at least 0.940 g/cc, an average molecular weight (Mw) of from 200,000 to 370,000, a z-average molecular weight (Mz) of from 1,500,000 to 3,400,000 Daltons, and a z+1 average molecular weight (Mz+1) of from 2,500,000 to 6,800,000 Daltons, is provided in various embodiments. Articles made therefrom and methods of making the same are also provided.
    Type: Application
    Filed: May 15, 2008
    Publication date: December 18, 2008
    Applicant: UNIVATION TECHNOLOGIES, LLC
    Inventors: Tae Hoon Kwalk, Stephen Paul Jaker, Sun-Chueh Kao, Mark Bradley Davis, Natarajan Muruganandam, Jo Ann Marie Canich
  • Publication number: 20080045647
    Abstract: Disclosed are various compositions, including but not limited to a high density multimodal polyethylene composition, that has a density of 0.935 g/cc or more, and that includes a blend of a first polyethylene component and a second polyethylene component, in which: the first polyethylene component includes a bimodal polyethylene; and the second polyethylene component includes a unimodal polyethylene that is made from a polymerization conducted in the presence of a metallocene having two cyclopentadienyl rings.
    Type: Application
    Filed: September 13, 2007
    Publication date: February 21, 2008
    Applicant: UNIVATION TECHNOLOGIES, LLC
    Inventor: Tae Hoon Kwalk
  • Patent number: 7312279
    Abstract: Disclosed herein are various compositions, including a high density polyethylene composition, comprising: (a) a bimodal polyethylene component that includes a high molecular weight polyethylene component having a high average molecular weight (MWHMW) and a low molecular weight polyethylene component having a low average molecular weight (MWLMW), wherein the ratio of the high average molecular weight to the low average molecular weight (MWHMW:MWLMW) is 20 or more; and (b) a unimodal polyethylene component that occupies more than 15 wt % of the composition; wherein: (c) the composition has a density of 0.935 g/cc or more, and a Maximum Line Speed of 170 feet per minute or more.
    Type: Grant
    Filed: February 7, 2005
    Date of Patent: December 25, 2007
    Assignee: Univation Technologies, LLC
    Inventor: Tae Hoon Kwalk
  • Patent number: 7288596
    Abstract: Disclosed are various compositions, including but not limited to a high density multimodal polyethylene composition, that has a density of 0.935 g/cc or more, and that includes a blend of a first polyethylene component and a second polyethylene component, in which: the first polyethylene component includes a bimodal polyethylene; and the second polyethylene component includes a unimodal polyethylene that is made from a polymerization conducted in the presence of a metallocene having two cyclopentadienyl rings.
    Type: Grant
    Filed: December 22, 2003
    Date of Patent: October 30, 2007
    Assignee: Univation Technologies, LLC
    Inventor: Tae Hoon Kwalk
  • Patent number: 7193017
    Abstract: Disclosed are various compositions, including but not limited to a high strength bimodal polyethylene composition having a density of 0.940 g/cc or more, the composition comprising a high molecular weight polyethylene component having a higher weight average molecular weight (MwHMW) and a low molecular weight polyethylene component having a lower weight average molecular weight (MwLMW), wherein: the ratio of the higher weight average molecular weight to the lower weight average molecular weight (MwHMW:MwLMW) is 30 or more; and the composition qualifies as a PE 100 material such that in accordance with ISO 1167 a pipe formed from the composition that is subjected to internal pipe resistance has an extrapolated stress of 10 MPa or more when the internal pipe resistance curve is extrapolated to 50 or 100 years in accordance with ISO 9080:2003(E).
    Type: Grant
    Filed: August 13, 2004
    Date of Patent: March 20, 2007
    Assignee: Univation Technologies, LLC
    Inventor: Tae Hoon Kwalk
  • Patent number: 6956089
    Abstract: The invention provides for polymerization catalyst compositions, and for methods for introducing the catalyst compositions into a polymerization reactor. More particularly, the method combines a catalyst component containing slurry and a catalyst component containing solution to form the completed catalyst composition for introduction into the polymerization reactor. The invention is also directed to methods of preparing the catalyst component slurry, the catalyst component solution and the catalyst compositions, to methods of controlling the properties of polymer products utilizing the catalyst compositions, and to polymers produced therefrom.
    Type: Grant
    Filed: February 24, 2003
    Date of Patent: October 18, 2005
    Assignee: Univation Technologies, LLC
    Inventors: Simon Mawson, Sun-Chueh Kao, Tae Hoon Kwalk, Timothy Roger Lynn, David H. McConville, Matthew Gary McKee, John Francis Szul, Kersten Anne Terry, Timothy T. Wenzel, Mark Gregory Goode, John Henry Oskam, Robert J. Jorgensen, Robert Harold Vogel
  • Patent number: 6956094
    Abstract: The invention provides for polymerization catalyst compositions, and for methods for introducing the catalyst compositions into a polymerization reactor. More particularly, the method combines a catalyst component containing slurry and a catalyst component containing solution to form the completed catalyst composition for introduction into the polymerization reactor. The invention is also directed to methods of preparing the catalyst component slurry, the catalyst component solution and the catalyst compositions, to methods of controlling the properties of polymer products utilizing the catalyst compositions, and to polymers produced therefrom.
    Type: Grant
    Filed: February 5, 2004
    Date of Patent: October 18, 2005
    Assignee: Univation Technologies, LLC
    Inventors: Simon Mawson, Sun-Chueh Kao, Tae Hoon Kwalk, Timothy Roger Lynn, David H. McConville, Matthew Gary McKee, John Francis Szul, Kersten Anne Terry, Timothy T. Wenzel, Mark Gregory Goode, John Henry Oskam, Robert J. Jorgensen, Robert Harold Vogel
  • Patent number: RE41897
    Abstract: Catalyst compositions and methods, useful in polymerization processes, utilizing at least two metal compounds are disclosed. At least one of the metal compounds is a Group 15 containing metal compound and the other metal compound is preferably a bulky ligand metallocene-type catalyst. The invention also discloses a new polyolefin, generally polyethylene, particularly a multimodal polymer and more specifically, a bimodal polymer, and its use in various end-use applications such as film, molding and pipe.
    Type: Grant
    Filed: January 20, 2004
    Date of Patent: October 26, 2010
    Assignee: Univation Technologies, LLC
    Inventors: Donald R. Loveday, David H. McConville, John F. Szul, Kersten Anne Terry, Simon Mawson, Tae Hoon Kwalk, Frederick J. Karol, David James Schreck