Patents Assigned to SK Chemicals Co., Ltd.
  • Patent number: 9278986
    Abstract: The present invention relates to a carbazole-based phosphine oxide compound, and an organic electroluminescent device including the same. According to the present invention, provided are a compound for an organic electroluminescent device which can improve the thermal stability and efficiency characteristics which are unstable and low, respectively, corresponding to problems of known compounds for organic electroluminescent devices, and particularly, can implement excellent efficiency characteristics in a pure blue phosphorescent device, by using the carbazole-based phosphine oxide compound of the compound for the organic electroluminescent device, and the organic electroluminescent device. According to one aspect of the present invention, the carbazole-based phosphine oxide compound of the compound for the organic electroluminescent device is provided, and the organic electroluminescent device containing the same which can implement thermal stability and high efficiency characteristics is also provided.
    Type: Grant
    Filed: November 16, 2009
    Date of Patent: March 8, 2016
    Assignee: SK CHEMICALS CO., LTD.
    Inventors: Jun-Yeob Lee, Soon-Ok Jeon, Kyoung-Soo Yook, Oh-Young Kim
  • Patent number: 9279033
    Abstract: There is provided a polyester resin including: moieties of dicarboxylic acid components including terephthalic acid; and moieties of diol components including 5 to 60 mole % of isosorbide, 10 to 80 mole % of a cyclohexanedimethanol, and the balance of other diol compounds, wherein the polyester resin has an intrinsic viscosity of 0.5 to 1.0 dl/g, and a melt viscosity of the polyester resin measured at a temperature of 280° C. and at a shear rate of 300 rad/s is at least 50% lower than that measured at a temperature of 280° C.
    Type: Grant
    Filed: May 21, 2013
    Date of Patent: March 8, 2016
    Assignee: SK CHEMICALS CO., LTD.
    Inventors: Ji-Hyun Kim, Yoo Jin Lee
  • Patent number: 9271916
    Abstract: Disclosed is a composition effective in reducing skin wrinkles. The composition comprises a phosphodiesterase 5 (PDE5) inhibitor, preferably the compound of chemical formula 1, more preferably, mirodenafil as an active ingredient. Further disclosed is a method for reducing skin wrinkles using the composition.
    Type: Grant
    Filed: March 7, 2014
    Date of Patent: March 1, 2016
    Assignee: SK CHEMICALS CO., LTD.
    Inventors: Soo-Min Lee, Sooheun Lee, Keun-Ho Ryu, Bong-Yong Lee, Jae-Sun Kim, Jung-Hoon Oh, Ye-Ji Jeon
  • Patent number: 9267000
    Abstract: There is provided a polyester resin including: moieties of dicarboxylic acid components including terephthalic acid; and moieties of diol components including 5 to 60 mole % of isosorbide, 10 to 80 mole % of a cyclohexanedimethanol, and the balance of other diol compounds, wherein the polyester resin has an intrinsic viscosity of 0.5 to 1.
    Type: Grant
    Filed: May 21, 2013
    Date of Patent: February 23, 2016
    Assignee: SK CHEMICALS CO., LTD.
    Inventors: Ji-Hyun Kim, Yoo Jin Lee
  • Patent number: 9255183
    Abstract: Embodiments of the present invention relate to polyarylene sulfide that may exhibit excellent processability at low temperature, decrease outgassing and flash or burr generation, and thus may satisfactorily mold a product requiring high molding accuracy, and a method for preparing the same. Specifically, the polyarylene sulfide includes an arylene sulfide repeat unit and an arylene disulfide repeat unit, wherein the weight ratio of the arylene sulfide repeat unit:arylene disulfide repeat unit is 1:0.0001 to 1:0.05.
    Type: Grant
    Filed: March 8, 2011
    Date of Patent: February 9, 2016
    Assignee: SK Chemicals Co., Ltd.
    Inventors: Sung-Gi Kim, Jae-Bong Lim, Il-Hoon Cha
  • Patent number: 9249263
    Abstract: Embodiments of the present invention relate to recyclable polyarylene sulfide that may exhibit and maintain excellent mechanical properties, particularly does not exhibit decrease in melt viscosity when it is molten, and thus, exhibit little deterioration of mechanical properties, and a method for preparing the same. The polyarylene sulfide has initial melt viscosity measured at 300° C. of 300 to 6000 poise, and melt viscosity after heat treated and molten at 300° C., equal to or greater than the initial melt viscosity.
    Type: Grant
    Filed: February 28, 2011
    Date of Patent: February 2, 2016
    Assignee: SK Chemicals Co., Ltd.
    Inventors: Sung-Gi Kim, Il-Hoon Cha
  • Publication number: 20160009677
    Abstract: The present invention relates to: a compound selected from the group consisting of a tricyclic compound having the structure of formula I, a pharmaceutically acceptable salt, an isomer, a solvate and a precursor thereof; and a use thereof. The compound effectively controls GPR40, and thus, can be effectively used for the prophylaxis or treatment of diseases associated with GPR40, for example, diabetes and many other diseases.
    Type: Application
    Filed: February 28, 2014
    Publication date: January 14, 2016
    Applicant: SK CHEMICALS CO., LTD.
    Inventors: Ju Young LEE, Jeong A LEE, Jaeseung AHN, Je Ho RYU, Min-Young HAN, Taekyung YOO, Joon Ho SA, Jae-Sun KIM
  • Publication number: 20150368460
    Abstract: A polymer resin composition capable of providing a synthetic resin showing physical properties of improved heat resistance or impact resistance is provided, in which the polymer resin composition includes a polyester tetrapolymer containing a residue of a dicarboxylic acid component containing terephthalic acid and a residue of a diol component containing dianhydrohexitol, and one or more terpolymers selected from the group consisting of an unsaturated nitrile-diene-based rubber-aromatic vinyl graft terpolymer, an alkyl methacrylate-diene-based rubber-aromatic vinyl graft terpolymer, and an alkyl methacrylate-silicone/alkyl acrylate graft terpolymer.
    Type: Application
    Filed: February 6, 2014
    Publication date: December 24, 2015
    Applicant: SK CHEMICALS CO., LTD.
    Inventors: Dong-Cheol SOHN, Byung-Woo AHN, Jong-Wook SHIN, Jong-Ryang KIM
  • Publication number: 20150343076
    Abstract: Provided is an immunogenic composition comprising 13 different polysaccharide-protein conjugates. Each of the conjugates comprises a capsular polysaccharide prepared from a different serotype Streptococcus pneumoniae conjugated to a carrier protein, that is, 12 serotypes selected from the group consisting of 1, 3, 4, 5, 6A, 6B, 7F, 9V, 14, 18C, 19A, 19F and 23F and serotype 22F or 33F. The immunogenic composition formulated into a vaccine comprising an aluminum-based adjuvant increases coverage with respect to pneumococcal diseases in infants and children.
    Type: Application
    Filed: December 5, 2013
    Publication date: December 3, 2015
    Applicant: SK CHEMICALS CO., LTD.
    Inventors: Mahn-Hoon PARK, Hun KIM, Ji-Hye YANG, Seon-Young YANG, Myeong-Ju NOH, Su-Jin PARK, Jin-Hwan SHIN
  • Patent number: 9180153
    Abstract: The present invention relates to an extract isolated from Sophorae Radix useful for prevention and treatment of respiratory diseases. More specifically, the present invention relates to a pharmaceutical drug comprising the Sophorae Radix extract having excellent effects of inhibiting airway contraction, respiratory infections, 5-lipoxygenase activity, phosphodiesterase 4 activity, airway hyper-responsiveness and airway remodeling; antagonistic activity against leukotriene D4; and an antitussive effect, thus being useful for prevention and treatment of respiratory diseases such as asthma, acute or chronic bronchitis, allergic rhinitis, acute upper respiratory infections and acute lower respiratory infections, and the like.
    Type: Grant
    Filed: May 12, 2010
    Date of Patent: November 10, 2015
    Assignee: SK Chemicals Co., Ltd.
    Inventors: Chang-Kyun Han, Kiwon Joung, Hunseung Yoo, Yong-Baik Cho, Keun Ho Ryu, Hye Yeon Baek, Taek-Soo Kim, In Ho Jung, Wie-Jong Kwak
  • Patent number: 9168212
    Abstract: The present invention relates to a pharmaceutical or cosmetic composition and a method for promoting eyelash growth, wherein nipradilol or pharmaceutically or cosmetically acceptable salts thereof are used as active ingredients. The composition of the invention may comprise prostaglandin F2? analogs.
    Type: Grant
    Filed: June 8, 2012
    Date of Patent: October 27, 2015
    Assignee: SK CHEMICALS CO., LTD.
    Inventors: Sang-hwan Kang, Keun-Ho Ryu, DongChul Shin, Bong-yong Lee
  • Patent number: 9169365
    Abstract: A copolymerized polyester heat shrinkable film which can be used as a label, a cap seal or a direct packaging for various containers is disclosed. The copolymerized polyester heat shrinkable film is made of a copolymerized polyester resin having alternating structures of acid moieties which are derived from acid components and diol moieties which are derived from diol components, the acid components comprising terephthalic acid, and the diol components comprising isosorbide 1,4-cyclohexanedimethanol and ethylene glycol. The copolymerized polyester heat shrinkable film has a shrinkage initiation temperature of equal to or more than 60° C., and a maximum heat shrinkage ratio of less than 2% at 60 to 70° C., and a maximum heat shrinkage ratio of 50 to 90% at 90 to 100° C.
    Type: Grant
    Filed: November 12, 2010
    Date of Patent: October 27, 2015
    Assignee: SK CHEMICALS CO., LTD.
    Inventors: Roy Lee, Jong-Ryang Kim, Won-Jae Yoon
  • Patent number: 9163119
    Abstract: The present invention relates to a method for preparing polyarylene sulfide with a reduced free iodine content. More specifically, the method for preparing polyarylene sulfide includes: (a) polymerizing reactants including a diiodo aromatic compound and a sulfur compound to form a polyarylene sulfide; and (b) maintaining the polyarylene sulfide product at 100 to 260° C. for heat-setting. The preparation method of the present invention effectively reduces the free iodine content of the polyarylene sulfide to prevent potential corrosion of facilities for the subsequent process and improves the properties of the polyarylene sulfide product such as thermal stability, so the method can be usefully applied to industrial fields in regard to the preparation of polyarylene sulfide.
    Type: Grant
    Filed: December 28, 2009
    Date of Patent: October 20, 2015
    Assignee: SK Chemicals Co., Ltd.
    Inventors: Yong-Jun Shin, Sung-Gi Kim, Jae-Bong Lim, Joon-Sang Cho, Il-Hoon Cha
  • Patent number: 9158048
    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: Grant
    Filed: December 26, 2011
    Date of Patent: October 13, 2015
    Assignee: SK CHEMICALS CO., LTD.
    Inventors: Ju-Sik Kang, Jeong-Ho Park, Yu-Mi Chang
  • Patent number: 9155691
    Abstract: Disclosed is a composition effective in reducing skin wrinkles. The composition comprises or uses a phosphodiesterase 5 (PDE5) inhibitor as an active ingredient. Further disclosed is a method for reducing skin wrinkles using the composition.
    Type: Grant
    Filed: March 3, 2014
    Date of Patent: October 13, 2015
    Assignee: SK Chemicals Co., Ltd.
    Inventors: Soo-Min Lee, Sooheun Lee, Keun-Ho Ryu, Bong-Yong Lee, Jae-Sun Kim, Jung-Hoon Oh, Ye-Ji Jeon
  • Patent number: 9155715
    Abstract: A transdermal composition comprising tolterodine having improved storage stability is disclosed. The transdermal composition comprising tolterodine contains an antioxidant to stabilize tolterodine and can be stored for a long period of time.
    Type: Grant
    Filed: May 27, 2010
    Date of Patent: October 13, 2015
    Assignee: SK Chemicals Co., Ltd.
    Inventors: Yong Youn Hwang, Won Jae Choi, Yeo-Jin Park, Joon-gyo Oh
  • Patent number: 9142784
    Abstract: The present invention relates to a highly efficient carbazole-based compound and to an organic electroluminescence device including the same. According to the present invention, provided are a compound for an organic electroluminescence device and an organic electroluminescence device including the compound, in which a carbazole-based phosphine oxide compound, which is a compound intended for an organic electroluminescence device, is employed to overcome the problems of conventional compounds for organic electroluminescence devices, i.e. those of instable thermal stability and low efficiency, and particularly, the compound of the present invention exhibits superior efficiency in pure-blue phosphorescent devices.
    Type: Grant
    Filed: June 23, 2011
    Date of Patent: September 22, 2015
    Assignee: SK CHEMICALS CO., LTD.
    Inventors: Jun Yeob Lee, Soon Ok Jeon, Hyo Suk Son, Kyoung Soo Yook, Sang Eok Jang
  • Patent number: 9138730
    Abstract: The present invention relates to a cation-exchanged zeolite catalyst for an transiodination and a process for producing mono-iodo benzene by using it. Particularly, the cation-exchanged zeolite catalyst has a molar ratio of Si/Al from 5 to 100 and is ion-exchanged with an alkali metal or an alkaline earth metal in range of 2% to 50% of ion exchange capacity. Further, the process for producing mono-iodo benzene of the present invention comprises the step of performing a transiodination by using the cation-exchanged zeolite catalyst to produce mono-iodo benzene from reactants including benzene and one or more multi-iodo benzenes selected from the group consisting of di-iodo benzene and tri-iodo benzene.
    Type: Grant
    Filed: December 7, 2012
    Date of Patent: September 22, 2015
    Assignee: SK Chemicals Co., Ltd.
    Inventors: Yong-Jin Yi, Jae-Bong Lim, Il-Hoon Cha, Han-Seok Kim, Yong-ki Park, Won-Choon Choi, Da-Young Min
  • Publication number: 20150250758
    Abstract: The present invention provides a rivastigmine medicine having improved stability. The invention also provides a method, for packing pharmaceutical medicines containing rivastigmine, capable of improving stability.
    Type: Application
    Filed: September 17, 2013
    Publication date: September 10, 2015
    Applicant: SK CHEMICAL CO., LTD.
    Inventors: Yong-Youn Hwang, Won-No Youn, Won-Jae Choi, Yeo-Jin Park, Joon-Gyo Oh, Sung-Hyuk Kim, Hye-Min Kim, Sae byeok Shin, Hun-Taek Kim, Jin H. Sung
  • Patent number: 9120949
    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: Grant
    Filed: April 5, 2012
    Date of Patent: September 1, 2015
    Assignee: SK Chemicals Co., Ltd.
    Inventors: Dong-Jin Kim, Kye-Yune Lee