Patents by Inventor Hyun Jee KWON

Hyun Jee KWON 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: 20200010589
    Abstract: The present disclosure provides a supported hybrid catalyst which facilitates the preparation of polyolefins having improved bubble stability and exhibiting excellent processability for a blown film while maintaining high transparent haze and improved melt strength, and a method for preparing the same.
    Type: Application
    Filed: January 25, 2018
    Publication date: January 9, 2020
    Applicant: LG Chem, Ltd.
    Inventors: Jin Young Lee, Sung Ho Park, Heon Yong Kwon, Hyun Jee Kwon, Sol Cho, Oh Joo Kwon, Ki Soo Lee, Dae Sik Hong
  • Publication number: 20190225721
    Abstract: The present invention provides an olefin polymer in which LCB (long chain branch) is introduced into mLLDPE (metallocene linear low-density polyethylene) to control the storage modulus, whereby the olefin polymer has excellent bubble stability and processing load characteristics and exhibits excellent processability during preparation of a film, and further has excellent mechanical properties and transparency.
    Type: Application
    Filed: November 7, 2017
    Publication date: July 25, 2019
    Applicant: LG Chem, Ltd.
    Inventors: Sol Cho, Ki Soo Lee, Heon Yong Kwon, Sung Hyun Park, Myung Han Lee, Oh Joo Kwon, Seung Mi Lee, Eun Ji Shin, Hyun Jee Kwon, Sung Ho Park, Seul Ki Im, Jin Young Lee
  • Publication number: 20190161590
    Abstract: The present disclosure provides a polyolefin-based film including an olefin polymer which is controlled in the content of the branched polymer structure in the polymer and the weight average molecular weight of the main chain in the structure to exhibit excellent processability and transparency. Therefore, the polyolefin-based film not only exhibits high transparency independent of processing conditions, but also reduces the increase in film haze even when the thickness of the film increases.
    Type: Application
    Filed: July 28, 2017
    Publication date: May 30, 2019
    Applicant: LG Chem, Ltd.
    Inventors: Oh Joo Kwon, Sol Cho, Ki Soo Lee, Chang-Hwan Jang, Dae Sik Hong, Sung Hyun Park, Eun Ji Shin, Hyun Jee Kwon, Sung Ho Park
  • Publication number: 20180282442
    Abstract: The present invention provides a metallocene supported catalyst that can prepare a polyolefin having excellent transparency even when processed into a film, as well as excellent processibility and mechanical properties, with high catalytic activity, and a method for preparing a polyolefin using the same.
    Type: Application
    Filed: December 22, 2016
    Publication date: October 4, 2018
    Applicant: LG Chem, Ltd.
    Inventors: Young Suk You, Sung Ho Park, Ki Soo Lee, Heon Yong Kwon, Dae Sik Hong, Eun Young Shin, Hyun Jee Kwon, Jin Young Lee
  • Publication number: 20180265605
    Abstract: Provided are a novel metallocene-supported catalyst and a method of preparing a polyolefin using the same. The metallocene-supported catalyst according to the present disclosure may be used in the preparation of polyolefins, it may have excellent activity and excellent reactivity with comonomers, and it may prepare olefinic polymers having a high molecular weight and a low molecular weight.
    Type: Application
    Filed: December 14, 2015
    Publication date: September 20, 2018
    Inventors: Eun Young SHIN, Heon Yong KWON, Se Young KIM, Hyun Jee KWON, Dae Sik HONG, Sung Min LEE, Ki Soo LEE
  • Publication number: 20180251580
    Abstract: The present disclosure provides a method for preparing a supported hybrid metallocene catalyst which can be used to prepare a polyolefin, a supported hybrid metallocene catalyst prepared by using the method, and a method for preparing a polyolefin using the supported hybrid metallocene catalyst.
    Type: Application
    Filed: November 24, 2016
    Publication date: September 6, 2018
    Applicant: LG Chem, Ltd.
    Inventors: Heon Yong Kwon, Eun Young Shin, Hyun Jee Kwon, Ki Soo Lee, Dae Sik Hong, Se Young Kim, Sung Min Lee
  • Publication number: 20180251584
    Abstract: The present invention relates to an olefin polymer and a preparation method thereof. The olefin polymer exhibits excellent mechanical strength and high processability, and thus is expected to be utilized as a material for various products. Particularly, the olefin polymer can be stably produced into films by a melt-blowing process and thus is expected to be usefully used as a material for products prepared by a melt-blowing process.
    Type: Application
    Filed: February 22, 2017
    Publication date: September 6, 2018
    Inventors: Sol CHO, Sung Hyun PARK, Oh Joo KWON, Ki Soo LEE, Heon Yong KWON, Dae Sik HONG, Myung Han LEE, Hyun Jee KWON
  • Publication number: 20180194873
    Abstract: The present invention relates to a supported hybrid catalyst and a method for preparing olefin polymer using the same. Using the supported hybrid catalyst, olefin polymer that maintains excellent mechanical strength of olefin polymer polymerized with the existing metallocene catalyst, but exhibits remarkably improved processibility compared to the existing olefin polymer, can be provided.
    Type: Application
    Filed: January 26, 2017
    Publication date: July 12, 2018
    Applicant: LG Chem, Ltd.
    Inventors: Hyun Jee KWON, Heon Yong KWON, Dae Sik HONG, Dae Hwan KIM, Sung Min LEE, Eun Young SHIN, Sung Ho PARK, Young Suk YOU, Jin Young LEE
  • Patent number: 9657119
    Abstract: The present invention relates to a preparation method of a highly active supported metallocene catalyst which can prepare a polyolefin of high bulk density. More specifically, the present invention provides a method of preparing the supported metallocene catalyst in which one or more metallocene catalysts are loaded on the silica carrier of which the inside is penetrated by more cocatalyst than the prior art and the outside is attached with a substantial amount of the cocatalyst. The catalyst according to the present invention can prepare a polyolefin polymer with improved bulk density and efficiency while maintaining its highly active catalytic characteristic.
    Type: Grant
    Filed: November 28, 2014
    Date of Patent: May 23, 2017
    Assignee: LG Chem, Ltd.
    Inventors: Seung Mi Lee, Yi Young Choi, Ki Soo Lee, Eun Kyoung Song, Heon Yong Kwon, Min Seok Cho, Dae Sik Hong, Hyun Jee Kwon, Yu Taek Sung, Dong Hoon Jeong
  • Patent number: 9587056
    Abstract: The present invention relates to an ethylene-alpha olefin copolymer having excellent processability. The copolymer according to the present invention has a high molecular weight and a broad molecular weight distribution and exhibits an excellent processability and an improved mechanical physical property, and thus can be effectively used for the application in need thereof.
    Type: Grant
    Filed: December 15, 2015
    Date of Patent: March 7, 2017
    Assignee: LG Chem, Ltd.
    Inventors: Yu Taek Sung, Ki Soo Lee, Heon Yong Kwon, Dae Sik Hong, Se Young Kim, Sung Min Lee, Dong Hoon Jeong, Eun Young Shin, Hyun Jee Kwon
  • Patent number: 9556289
    Abstract: The present invention relates to a supported hybrid catalyst and a method for preparing an olefin based polymer using the same. The supported hybrid catalyst according to the present invention can be used in the preparation of an olefin-based polymer, and the olefin-based polymer prepared using the supported hybrid catalyst has excellent processability and mechanical properties and thus can be effectively used for the application of films or the like.
    Type: Grant
    Filed: September 7, 2015
    Date of Patent: January 31, 2017
    Assignee: LG Chem, Ltd.
    Inventors: Heon Yong Kwon, Eun Young Shin, Ki Soo Lee, Dae Sik Hong, Se Young Kim, Sung Min Lee, Hyun Jee Kwon, Yong Ho Lee, Yu Taek Sung, Dong Hoon Jeong
  • Publication number: 20160333124
    Abstract: The present invention relates to an ethylene-alpha olefin copolymer having excellent processability. The copolymer according to the present invention has a high molecular weight and a broad molecular weight distribution and exhibits an excellent processability and an improved mechanical physical property, and thus can be effectively used for the application in need thereof.
    Type: Application
    Filed: December 15, 2015
    Publication date: November 17, 2016
    Inventors: Yu Taek SUNG, Ki Soo LEE, Heon Yong KWON, Dae Sik HONG, Se Young KIM, Sung Min LEE, Dong Hoon JEONG, Eun Young SHIN, Hyun Jee KWON
  • Publication number: 20160304637
    Abstract: The present invention relates to a preparation method of a highly active supported metallocene catalyst which can prepare a polyolefin of high bulk density. More specifically, the present invention provides a method of preparing the supported metallocene catalyst in which one or more metallocene catalysts are loaded on the silica carrier of which the inside is penetrated by more cocatalyst than the prior art and the outside is attached with a substantial amount of the cocatalyst. The catalyst according to the present invention can prepare a polyolefin polymer with improved bulk density and efficiency while maintaining its highly active catalytic characteristic.
    Type: Application
    Filed: November 28, 2014
    Publication date: October 20, 2016
    Applicant: LM CHEM, LTD.
    Inventors: Seung Mi LEE, Yi Young CHOI, Ki Soo LEE, Eun Kyoung SONG, Heon Yong KWON, Min Seok CHO, Dae Sik HONG, Hyun Jee KWON, Yu Taek SUNG, Dong Hoon JEONG
  • Publication number: 20160280813
    Abstract: The present invention relates to a supported hybrid catalyst and a method for preparing an olefin based polymer using the same. The supported hybrid catalyst according to the present invention can be used in the preparation of an olefin-based polymer, and the olefin-based polymer prepared using the supported hybrid catalyst has excellent processability and mechanical properties and thus can be effectively used for the application of films or the like.
    Type: Application
    Filed: September 7, 2015
    Publication date: September 29, 2016
    Applicant: LG CHEM, LTD.
    Inventors: Heon Yong KWON, Eun Young SHIN, Ki Soo LEE, Dae Sik HONG, Se Young KIM, Sung Min LEE, Hyun Jee KWON, Yong Ho LEE, Yu Taek SUNG, Dong Hoon JEONG