Patents by Inventor Joon-Hee Cho

Joon-Hee Cho 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: 8692009
    Abstract: The present invention relates to a novel metallocene compound, a catalyst composition comprising the same, and to olefinic polymers produced using the same. The metallocene compound according to the present invention and the catalyst composition comprising the same can be used when producing olefinic polymers, have outstanding copolymerization properties, and can produce olefinic polymers of high molecular weight. In particular, when the metallocene compound according to the present invention is employed, highly heat resistant block copolymers can be produced, and olefinic polymers can be produced which have a high melting point (Tm) even if the comonomer content is increased when producing the olefinic polymer.
    Type: Grant
    Filed: July 29, 2010
    Date of Patent: April 8, 2014
    Assignee: LG Chem, Ltd.
    Inventors: Yong Ho Lee, Manseong Jeon, Ki-Soo Lee, Heon-Yong Kwon, Min-Seok Cho, Jong-Sang Park, Joon Hee Cho, Hyeon-Gook Kim, Eunkyoung Song, Seon-Kyoung Kim, Dae-Sik Hong
  • Publication number: 20140094574
    Abstract: A polyolefin has 1) a density in the range of 0.93 to 0.97 g/cm3, 2) a BOCD (Broad Orthogonal Co-monomer Distribution) index defined by a given equation in the range of 1 to 5, and 3) a molecular weight distribution (weight average molecular weight/number average molecular weight) in the range of 4 to 10. A supported hybrid metallocene catalyst comprises a first metallocene compound represented by a first given formulae, a second metallocene compound represented by one of three given formulae, and a support.
    Type: Application
    Filed: December 2, 2013
    Publication date: April 3, 2014
    Applicant: LG CHEM, LTD.
    Inventors: Joon-Hee Cho, Ki-Soo Lee, Yong-Gyu Han, Dae-Sik Hong, Heon-Yong Kwon, Jong-Sang Park, Seon-Kyoung Kim
  • Publication number: 20140066288
    Abstract: The present invention relates to a novel metallocene compound, a catalyst composition comprising the same, and to olefinic polymers produced using the same. The metallocene compound according to the present invention and the catalyst composition comprising the same can be used when producing olefinic polymers, have outstanding copolymerisation properties, and can produce olefinic polymers of high molecular weight. In particular, when the metallocene compound according to the present invention is employed, highly heat resistant block copolymers can be produced, and olefinic polymers can be produced which have a high melting point (Tm) even if the comonomer content is increased when producing the olefinic polymer.
    Type: Application
    Filed: November 12, 2013
    Publication date: March 6, 2014
    Applicant: LG CHEM, LTD.
    Inventors: Yong-Ho Lee, Man-Seong Jeon, Ki-Soo Lee, Heon-Yong Kwon, Min-Seok Cho, Jong-Sang Park, Joon-Hee Cho, Hyeon-Gook Kim, Eun-Kyoung Song, Seon-Kyoung Kim, Dae-Sik Hong
  • Patent number: 8450510
    Abstract: The present invention relates to an amine bridged metallocene catalyst, a method for producing the same, and a method for producing an ethylene-alpha olefin copolymer, which comprises polymerizing ethylene and alpha olefin in the presence of an olefin polymerization catalyst composition including a metallocene catalyst. The amine bridged metallocene catalyst may be produced by reacting one or more of substituted or unsubstituted cyclopentadiene and substituted or unsubstituted fluorene with amine to bridge them with nitrogen, and reacting them with a transition metal to coordinate them.
    Type: Grant
    Filed: January 30, 2009
    Date of Patent: May 28, 2013
    Assignee: LG Chem, Ltd.
    Inventors: Min-Seok Cho, Nicola Maggiarosa, Ki-Soo Lee, Heon-Yong Kwon, Jong-Sang Park, Joon-Hee Cho, Yong-Ho Lee, Byung-Ryul Lee, Seon-Kyoung Kim, Dae-Sik Hong
  • Patent number: 8431660
    Abstract: The present invention provides a non-metallocene transition metal compound that is easily produced, includes a tetrazol group having the high polymerization activity and high temperature stability in the polymerization of olefins, and a catalytic composition that includes the transition metal compound and a cocatalyst. In addition, the present invention provides a method for efficiently producing an olefin homopolymer or copolymer by using the catalytic composition.
    Type: Grant
    Filed: December 5, 2008
    Date of Patent: April 30, 2013
    Assignee: LG Chem, Ltd.
    Inventors: Heon-Yong Kwon, Nicola Maggiarosa, Ki-Soo Lee, Min-Seok Cho, Jong-Sang Park, Joon-Hee Cho, Yong-Ho Lee, Byung-Ryul Lee, Seon-Kyoung Kim, Dae-Sik Hong
  • Publication number: 20120172548
    Abstract: A polyolefin has 1) a density in the range of 0.93 to 0.97 g/cm3, 2) a BOCD (Broad Orthogonal Co-monomer Distribution) index defined by a given equation in the range of 1 to 5, and 3) a molecular weight distribution (weight average molecular weight/number average molecular weight) in the range of 4 to 10. A supported hybrid metallocene catalyst comprises a first metallocene compound represented by a first given formulae, a second metallocene compound represented by one of three given formulae, and a support.
    Type: Application
    Filed: December 27, 2011
    Publication date: July 5, 2012
    Applicant: LG CHEM, LTD.
    Inventors: Joon-Hee CHO, Ki-Soo LEE, Yong-Gyu HAN, Dae-Sik HONG, Heon-Yong KWON, Jong-Sang PARK, Seon Kyoung KIM
  • Publication number: 20120123078
    Abstract: The present invention relates to a novel metallocene compound, a catalyst composition comprising the same, and to olefinic polymers produced using the same. The metallocene compound according to the present invention and the catalyst composition comprising the same can be used when producing olefinic polymers, have outstanding copolymerisation properties, and can produce olefinic polymers of high molecular weight. In particular, when the metallocene compound according to the present invention is employed, highly heat resistant block copolymers can be produced, and olefinic polymers can be produced which have a high melting point (Tm) even if the comonomer content is increased when producing the olefinic polymer.
    Type: Application
    Filed: July 29, 2010
    Publication date: May 17, 2012
    Inventors: Yong Ho Lee, Manseong Jeon, Ki-Soo Lee, Heon-Yong Kwon, Min-Seok Cho, Jong-Sang Park, Joon-Hee Cho, Hyeon-Gook Kim, EunKyoung Song, Seon-Kyoung Kim, Dae-Sik Hong
  • Patent number: 7915360
    Abstract: The present invention provides a new supported catalyst for olefin polymerization prepared by reacting a novel transition metal compound on a cocatalyst-supported support, in which the transition metal compound is coordinated with a monocyclopentadienyl ligand to which an amido-quinoline group is introduced, a method for preparing the same, and a method for preparing a polyolefin using the same. The transition metal catalyst compound used in the present invention is configured such that an amido group is linked in a cyclic form via a phenylene bridge. Thus, a pentagon ring structure of the transition metal compound is stably maintained, so that monomers easily approach the transition metal compound and the reactivity is also high.
    Type: Grant
    Filed: November 15, 2007
    Date of Patent: March 29, 2011
    Assignee: LG Chem, Ltd.
    Inventors: Dae-Sik Hong, Ki-Soo Lee, Yong-Gyu Han, Heon-Yong Kwon, Jong-Sang Park, Joon-Hee Cho, Seon-Kyoung Kim, Choong-Hoon Lee, Eun-Jung Lee, Seung-Whan Jung, Ki-Su Ro
  • Publication number: 20100324321
    Abstract: The present invention relates to an amine bridged metallocene catalyst, a method for producing the same, and a method for producing an ethylene-alpha olefin copolymer, which comprises polymerizing ethylene and alpha olefin in the presence of an olefin polymerization catalyst composition including a metallocene catalyst. The amine bridged metallocene catalyst may be produced by reacting one or more of substituted or unsubstituted cyclopentadiene and substituted or unsubstituted fluorene with amine to bridge them with nitrogen, and reacting them with a transition metal to coordinate them.
    Type: Application
    Filed: January 30, 2009
    Publication date: December 23, 2010
    Inventors: Min-Seok Cho, Nicola Maggiarosa, Ki-Soo Lee, Heon-Yong Kwon, Jong-Sang Park, Joon-Hee Cho, Yong-Ho Lee, Byung-Ryul Lee, Seon-Kyoung Kim, Dae-Sik Hong
  • Publication number: 20100256315
    Abstract: The present invention provides a non-metallocene transition metal compound that is easily produced, includes a tetrazol group having the high polymerization activity and high temperature stability in the polymerization of olefins, and a catalytic composition that includes the transition metal compound and a cocatalyst. In addition, the present invention provides a method for efficiently producing an olefin homopolymer or copolymer by using the catalytic composition.
    Type: Application
    Filed: December 5, 2008
    Publication date: October 7, 2010
    Inventors: Heon-Yong Kwon, Nicola Maggiarosa, Ki-Soo Lee, Min-Seok Cho, Jong-Sang Park, Joon-Hee Cho, Yong-Ho Lee, Byung-Ryul Lee, Seon-Kyoung Kim, Dae-Sik Hong
  • Publication number: 20100121006
    Abstract: The present invention relates to a polyolefin that has high environmental stress cracking resistance (ESCR), a high impact property, and an excellent die swell property, and a method of preparing the same. According to the method of preparing polyolefin of the present invention, a supported hybrid metallocene catalyst and an alpha olefin comonomer having 4 or more carbon atoms are used to obtain polyolefin having the bimodal or multimodal molecular weight distribution curves during the single reactor polymerization. The polyolefin has excellent processability, a melt flow rate ratio (MFRR) that is useful to processing, excellent shapability, impact strength, tensile strength, in particular, environmental stress cracking resistance (ESCR) and full notch creep test (FNCT), thus being used to manufacture the blow molded product.
    Type: Application
    Filed: May 2, 2008
    Publication date: May 13, 2010
    Inventors: Joon-Hee Cho, Ki-Soo Lee, Yong-Gyu Han, Dae-Sik Hong, Heon-Yong Kwon, Jong-Sang Park, Seon-Kyoung Kim
  • Publication number: 20100093959
    Abstract: The present invention provides a new supported catalyst for olefin polymerization prepared by reacting a novel transition metal compound on a cocatalyst-supported support, in which the transition metal compound is coordinated with a monocyclopentadienyl ligand to which an amido-quinoline group is introduced, a method for preparing the same, and a method for preparing a polyolefin using the same. The transition metal catalyst compound used in the present invention is configured such that an amido group is linked in a cyclic form via a phenylene bridge. Thus, a pentagon ring structure of the transition metal compound is stably maintained, so that monomers easily approach the transition metal compound and the reactivity is also high.
    Type: Application
    Filed: November 15, 2007
    Publication date: April 15, 2010
    Inventors: Dae-Sik Hong, Ki-Soo Lee, Yong-Gyu Han, Heon-Yong Kwon, Jong-Sang Park, Joon-Hee Cho, Seon-Kyoung Kim, Choong-Hoon Lee, Eun-Jung Lee, Seung-Whan Jung, Ki-Su Ro