Patents Assigned to SK Chemicals Co., Ltd.
  • Publication number: 20140018484
    Abstract: Disclosed are a polyester binder resin for coating which is copolymerized with lactic acid or a compound derived therefrom and isosorbide, and thus has a high content of biomass-derived compounds, and exhibits superior coating hardness, contamination resistance, hydrolytic resistance, processability and the like, and a coating composition comprising the same. The polyester resin binder for coating is copolymerized with a diacid component, a diol component comprising 1 to 60 moles of isosorbide, with respect to a total diol component, and 1 to 50% by weight of lactic acid or a compound derived therefrom, with respect to the total amount of resin polymerization reactants, wherein the polyester resin binder for coating has a structure in which a diacid moiety derived from the diacid component, a diol moiety derived from the diol component, and a hydroxyl monoacid moiety derived from the lactic acid or a compound derived therefrom are repeated.
    Type: Application
    Filed: April 5, 2012
    Publication date: January 16, 2014
    Applicant: SK CHEMICALS CO., LTD.
    Inventors: Dong-Jin Kim, Kye-Yune Lee
  • Publication number: 20140018497
    Abstract: The present invention relates to a copolymer polyester resin and a molded product using the same and more specifically to a copolymer polyester resin that contains 10˜80 mol % of 1,4-cyclohexane dimethanol, 0.1˜30 mol % of a cyclohexane dimethanol compound expressed as HOH2C—[C6H12]m—[C6H12]—CH2OH (where m is an integer from 1˜10), and ethylene glycol as the remainder so that the sum of the entire diol composition may be 100 mol % based on an aromatic dicarboxylic acid. The copolymer polyester of the present invention enables superior products to be provided that reduce cycle time and enhance product processability during mold processing using a heat-shrinking label by complementing low temperature shrinkage properties that may be exhibited by the polyester resin of the prior art copolymerized with 1,4-cyclohexane dimethanol.
    Type: Application
    Filed: September 19, 2013
    Publication date: January 16, 2014
    Applicant: SK Chemicals Co., Ltd.
    Inventors: Myoung Ruoul Lee, Jong Ryang Kim, Nam Jung Kim
  • Publication number: 20140011976
    Abstract: A polyester resin with a superior heat-resistance and color as well as high content of a compound derived from biomass due to copolymerization of lactic acid or a compound derived therefrom and isosorbide, and a method for preparing the same are disclosed. The polyester resin is copolymerized with diacid components including terephthalic acid; diol components including 1 to 60 mol % of isosorbide and 1 to 90 mol % of ethylene glycol with respect to total diol components; and 1 to 50 weight % of lactic acid or a compound derived therefrom with respect to total reactants for resin polymerization, wherein, the polyester resin has the repeated structure of diacid moiety derived from the diacid components, diol moiety derived from the diol components and hydroxy monoacid moiety derived from the lactic acid or the compound derived therefrom.
    Type: Application
    Filed: March 28, 2012
    Publication date: January 9, 2014
    Applicant: SK CHEMICALS CO., LTD.
    Inventors: Dong-Jin Kim, Jong-Ryang Kim
  • Publication number: 20140004330
    Abstract: The present invention relates to a polylactic acid resin and a packaging film comprising the same, wherein the polylactic acid resin is useful as a packaging material due to excellent properties including heat resistance as well as optimized flexibility. The polylactic acid resin comprises: a hard segment including a predetermined polylactic acid repeating unit; and a soft segment including a polyurethane polyol repeating unit in which certain polyether-based polyol repeating units are linearly connected in a medium of a urethane bond. In addition, the polylactic acid resin has a glass transition temperature (Tg) of 25-55° C.
    Type: Application
    Filed: November 2, 2011
    Publication date: January 2, 2014
    Applicant: SK CHEMICALS CO., LTD.
    Inventors: Young-Man Yoo, Tae-Woong Lee, Kye-Yune Lee, Jae-II Chung
  • Patent number: 8614362
    Abstract: The present invention relates to a process for preparing iodinated aromatic compounds. Particularly, the present invention comprises the step of performing the iodination of a non-halogenated aromatic compound, a monoiodo aromatic compound, a diiodo aromatic compound, and iodine in the presence of a zeolite catalyst under oxygen atmosphere. In the process for preparing iodinated aromatic compounds according to the present invention, an iodination and an iodine conversion simultaneously occur, and then prevent side-reactions. Also, the lifetime of an iodination catalyst used therein can be extended by controlling the reaction temperature stably. Therefore, the process can be used for mass production of diiodo compound.
    Type: Grant
    Filed: December 10, 2009
    Date of Patent: December 24, 2013
    Assignee: SK Chemicals Co., Ltd.
    Inventors: Joong-ki Lee, Han-Seok Kim, Jae-Bong Lim, Il-Hoon Cha
  • Publication number: 20130331608
    Abstract: Disclosed are a novel diimmonium-based compound that has low light absorption in visible light region and has superior light absorption efficiency in near infrared region, and has superior durability and weatherability, and a near infrared absorption filter using the same. The diimmonium-based compound is represented by the formula 1 of claim 1.
    Type: Application
    Filed: December 26, 2011
    Publication date: December 12, 2013
    Applicant: SK CHEMICALS CO., LTD.
    Inventors: Ju-Sik Kang, Jeong-Ho Park, Yu-Mi Chang
  • Publication number: 20130315689
    Abstract: A fiber reinforced plastic bolt (FRP) and a method for producing the same are disclosed. The FRP bolt is useful in the industrial areas which require a bolt having electric-insulation, anti-corrosive, thermal-insulation, and non-magnetic properties. The method for producing the FRP bolt includes the steps of: winding a prepreg around a surface of an internal body, wherein the internal body includes a first reinforcing fiber which is unidirectionally aligned along the axis of the bolt, and a synthetic resin which is impregnated into the first reinforcing fiber, and the prepreg includes a second reinforcing fiber and a thermosetting resin which is impregnated into the second reinforcing fiber; forming a fiber reinforced plastic round bar by heat-hardening the prepreg; and forming a screw thread on the surface of the fiber reinforced plastic round bar.
    Type: Application
    Filed: July 31, 2013
    Publication date: November 28, 2013
    Applicants: SAMSUNG HEAVY INDUSTRIES CO., LTD., SK CHEMICALS CO., LTD.
    Inventors: Hoon-Heui JEONG, Yong-Min PARK, Hyun-Seok KIM
  • Patent number: 8580898
    Abstract: The present invention relates to a copolymer polyester resin and a molded product using the same, and more specifically to a copolymer polyester resin that contains 10˜80 mol % of 1,4-cyclohexane dimethanol, 0.1˜50 mol % of a diol compound expressed as HO—(CH2)a—CO—(CH2)b—OH (where a and b are integers in the range 1˜5), and ethylene glycol or other diols so that the sum of its entire diol composition is 100 mol % based on dicarboxylic acid. The copolymer polyester resin of the present invention enables reduction of cycle time, improvement of product processability and prevention of PET bottle deformation during mold processing with a heat-shrinking label by complementing low temperature shrinkage, maintaining a high shrinkage rate, and reducing shrinkage stress.
    Type: Grant
    Filed: November 20, 2009
    Date of Patent: November 12, 2013
    Assignee: SK Chemicals Co., Ltd.
    Inventors: Myoung Ruoul Lee, Jong Ryang Kim
  • Publication number: 20130296534
    Abstract: Disclosed is a fusion protein comprising blood coagulation factor IX (FIX) and transferrin. The fusion protein exhibits improved specific FIX activity, as compared to native FIX, and can be useful in the treatment of FIX deficiency-associated diseases.
    Type: Application
    Filed: October 19, 2011
    Publication date: November 7, 2013
    Applicant: SK CHEMICALS CO., LTD.
    Inventors: Min Sun Lee, Hun-Taek Kim, Bong-yong Lee, Mahn Hoon Park, Yun Jung Lim
  • Publication number: 20130295306
    Abstract: Disclosed are a copolymeric polyester resin composition having outstanding colour stability (transparency) and a production method therefor. The copolymeric polyester resin composition comprises: between 95 and 99.99 percent by weight of a copolymeric polyester resin having a structure which is obtained by the copolymerisation of a dicarboxylic acid component and a diol component that comprises isosorbide, and in which there is repetition of a dicarboxylic acid moiety derived from the dicarboxylic acid component and a diol moiety derived from the diol component; and between 0.01 and 5 percent by weight of an antioxidant selected from the group consisting of hindered phenol-based antioxidants, phosphite-based antioxidants, thioether-based antioxidants and mixtures thereof.
    Type: Application
    Filed: January 30, 2012
    Publication date: November 7, 2013
    Applicant: SK CHEMICALS CO., LTD.
    Inventor: JVC KENWOOD Corporation
  • Patent number: 8557951
    Abstract: The present invention relates to a copolymer polyester resin and a molded product using the same and more specifically to a copolymer polyester resin that contains 10˜80 mol % of 1,4-cyclohexane dimethanol, 0.1˜30 mol % of a cyclohexane dimethanol compound expressed as HOH2C—[C6H12]m—[C6H12]—CH2OH (where m is an integer from 1˜10), and ethylene glycol as the remainder so that the sum of the entire diol composition may be 100 mol % based on an aromatic dicarboxylic acid. The copolymer polyester of the present invention enables superior products to be provided that reduce cycle time and enhance product processability during mold processing using a heat-shrinking label by complementing low temperature shrinkage properties that may be exhibited by the polyester resin of the prior art copolymerized with 1,4-cyclohexane dimethanol.
    Type: Grant
    Filed: November 20, 2009
    Date of Patent: October 15, 2013
    Assignee: SK Chemicals Co., Ltd.
    Inventors: Myoung Ruoul Lee, Jong Ryang Kim, Nam Jung Kim
  • Publication number: 20130245066
    Abstract: 2-pyridyl-substituted imidazoles which are used advantageously in the treatment of diseases mediated by ALK 5 or ALK 4 receptor or both.
    Type: Application
    Filed: June 22, 2011
    Publication date: September 19, 2013
    Applicants: IN2GEN CO., LTD., EWHA UNIVERSITY INDUSTRY COLLABORATION FOUNDATION, SK CHEMICALS CO., LTD.
    Inventors: Dae-Kee Kim, Yung-Jue Bang, Hun-Taek Kim, II-Sang Cho, Myoung-Soon Park, Young Jae An, Joon Hun Choi
  • Publication number: 20130236945
    Abstract: A fusion protein comprising factor VII (FVII) and transferrin according to the present invention has an improved specific activity of FVII compared to existing FVII fusion proteins comprising other fusion partners than transferrin, and thus can be effectively used in a therapy using FVII.
    Type: Application
    Filed: June 7, 2011
    Publication date: September 12, 2013
    Applicant: SK CHEMICALS CO., LTD
    Inventors: In-Young Song, Hun-Taek Kim, Bong-Yong Lee, Mahn-Hoon Park, Ho-Soon Lee, Yun Jung Lim, Ji-Hye Lee, Seo Yeon Son, Min-Sun Kim
  • Patent number: 8530684
    Abstract: A method for preparing fatty acid alkyl ester for bio-diesels is disclosed, wherein fatty acid, specifically fatty acid distillate reacts with alcohol in the presence of metal catalyst instead of conventional acid or solid acid catalyst. The method does not require the glycerin purification process, and has the superior conversion ratio of fatty acid. The method for preparing fatty acid alkyl ester comprises the step of carrying out an esterification reaction of fatty acid raw material with alcohol in the presence of metal catalyst. Preferably, the esterification reaction is carried out at the temperature of 200 to 350° C. and the pressure of atmospheric pressure to 10 bar, and the metal catalyst is a compound containing metal selected from the group consisting of cobalt, iron, manganese, zinc, titanium and mixture thereof.
    Type: Grant
    Filed: April 1, 2008
    Date of Patent: September 10, 2013
    Assignee: SK Chemicals Co., Ltd.
    Inventors: Hyun-Jun Cho, Byung-Hui Kim, Soo-Hyun Kim, Yong-Jun Shin, Shin-ho Chun
  • Publication number: 20130224257
    Abstract: The present invention relates to a method for preparing microsphere and microspheres produced thereby. The method comprises: mixing a water-insoluble organic solvent with a dispersion solvent; mixing a polymer compound, a drug and a water-insoluble organic solvent to prepare a dispersed phase; mixing the dispersed phase with the dispersion solvent mixed with the water-insoluble organic solvent to prepare an emulsion; and adding a base or an acid to the prepared emulsion. With the method, it is possible to prepare a drug-containing polymeric microsphere cost-effectively and conveniently.
    Type: Application
    Filed: January 18, 2013
    Publication date: August 29, 2013
    Applicants: Ewha University - Industry Collaboration Foundation, SK Chemicals Co., Ltd.
    Inventors: SK Chemicals Co., Ltd., Ewha University - Industry Collaboration Foundation
  • Publication number: 20130217835
    Abstract: A polyester/polycarbonate blend having superior thermal stability and superior color stability is disclosed. The polyester/polycarbonate blend comprises: (a) P(ET-CT) (poly(ethylene terephthalate-co-1,4-cyclohexylene dimethylene terephthalate) which is copolymerized with 1,4-cyclohexanedimethanol (CHDM) of 40 to 90 mol % with respect to total diol components; (b) polyethylene terephthalate (PET); (c) polycarbonate (PC); and (d) germanium of 1 to 100 ppm (weight ratio) with respect to total polyester/polycarbonate blend, wherein with respect to total polyester/polycarbonate blend, the amount of the P(ET-CT) and PET is 50 to 90 weight %, the amount of the PET is 1 to 6 times in weight ratio with respect to the P(ET-CT), and the amount of the PC is 10 to 50 weight %.
    Type: Application
    Filed: October 28, 2011
    Publication date: August 22, 2013
    Applicant: SK CHEMICALS CO., LTD.
    Inventors: Dong-June Hwang, Jeoung-Jun Hwang, Jae-Bong Lim, Tae-Young Kim, Sung-Su Bae
  • Publication number: 20130210811
    Abstract: Provided are picolinamide and pyrimidine-4-carboxamide compounds, a method for preparing the same, a pharmaceutical composition containing the same, and a medical use using the compound as an agent for preventing, regulating, and treating diseases related to regulation of glucocorticoids by using selective inhibitory activity of the compound for an 11?-HSD1 enzyme. The picolinamide and pyrimidine-4-carboxamide compounds of the present invention are selective inhibitors of human-derived 11?-HSD1 enzymes, and are useful in an agent for preventing, regulating, and treating diseases related to glucocorticoid regulation in which human-derived 11?-HSD1 enzymes are involved, for example, metabolic syndromes such as, type 1 and type 2 diabetes, diabetes later complications, latent autoimmune diabetes adult (LADA), insulin tolerance syndromes, obesity, impaired glucose tolerance (IGT), impaired fasting glucose (IFG), damaged glucose tolerance, dyslipidemia, atherosclerosis, hypertension, etc.
    Type: Application
    Filed: May 4, 2011
    Publication date: August 15, 2013
    Applicant: SK CHEMICALS CO., LTD.
    Inventors: Je Ho Ryu, Shin Ae Kim, Keun Ho Ryu, Jae Sun Kim, Nam Ho Kim, Hye Young Han, Yong Hyuk Kim, Won-No Youn, Yoon-Jung Lee, Hyun Joo Son, Bong-Yong Lee, Sung Hoon Park, Ju Young Lee, Hyun Jung Lee, Hoe Chul Jung, Young Ah Shin, Jung A Lee, Bo Ram Lee, Joon Ho Sa
  • Patent number: 8492502
    Abstract: The present invention relates to a process of producing polyarylene sulfide (PAS) and PAS resin produced therefrom, and more specifically, to a process of preparing polyarylene sulfide with better thermal properties and luminosity than conventional PAS and the PAS resin produced therefrom, including the steps of: a) melting and mixing a composition including solid sulfur, iodinated aryl compounds, and a polymerization terminator; b) polymerizing the molten mixture of step a) for 1 to 30 hours while increasing the temperature and decreasing the pressure from initial reaction conditions of a temperature of 180 to 250° C. and a pressure of 50 to 450 Torr to final reaction conditions of a temperature of 270 to 350° C. and a pressure of 0.001 to 20 Torr; and c) heating the reaction product of step b) at a temperature of 270 to 350° C. for 1 to 25 hours.
    Type: Grant
    Filed: January 4, 2008
    Date of Patent: July 23, 2013
    Assignee: SK Chemicals Co., Ltd.
    Inventors: Young-Rok Lee, II-Hoon Cha, Jun-Sang Cho
  • Publication number: 20130183741
    Abstract: Disclosed is a Madin-Darby canine kidney (MDCK)-derived cell line. The MDCK-derived cell line is derived from MDCK cells deposited under accession number ATCC CCL-34. The MDCK-derived cell line can be prepared by serum-free culture and suspension culture. Preferably, the MDCK-derived cell line has low or no tumorigenicity. The MDCK-derived cell line is preferably selected from MDCK Sky1023, MDCK Sky10234 and MDCK Sky3851. Further disclosed are a culture method for growing the MDCK-derived cells and a method for producing a vaccine virus using the MDCK-derived cells.
    Type: Application
    Filed: March 5, 2013
    Publication date: July 18, 2013
    Applicant: SK CHEMICALS CO., LTD.
    Inventor: SK Chemicals Co., Ltd.
  • Publication number: 20130137661
    Abstract: Disclosed are compounds useful as gonadotrophin-releasing hormone (“GnRH”) receptor antagonist.
    Type: Application
    Filed: November 19, 2010
    Publication date: May 30, 2013
    Applicant: SK CHEMICALS CO. LTD.
    Inventors: Seon Mi Kim, Min Hee Lee, Jae Sun Kim, Hoe Chul Jung, So Young Lee, Soo Min Lee, Eun Jeong Kim, Eui Sun Park, Sung Hoon Park, Bong Yong Lee, Key An Um