Patents Assigned to SK Global Chemical Co., Ltd.
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Publication number: 20130253128Abstract: Provided is a non-crosslinked polyethylene composition for a power cable in which crosslinked polyethylene widely used in the world as an existing insulator for a power cable is replaced with a non-crosslinked polyethylene resin, and more particularly, a non-crosslinked polyethylene composition for a power cable having excellent processability, AC dielectric breakdown strength, space charge distribution, and water tree resistance.Type: ApplicationFiled: March 25, 2013Publication date: September 26, 2013Applicants: SK GLOBAL CHEMICAL CO., LTD., SK INNOVATION CO., LTD.Inventors: Jae Soon LEE, Kyu Cheol CHO, Kwang Hoi KU
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Publication number: 20130225834Abstract: The present invention relates to a new transition metal compound based on cyclopenta[b]fluorenyl group, a transition metal catalyst composition containing the same and having high catalytic activity for preparing an ethylene homopolymer or a copolymer of ethylene and one ?-olefin, a method of preparing an ethylene homopolymer or a copolymer of ethylene and ?-olefin using the same, and the prepared ethylene homopolymer or the copolymer of ethylene and ?-olefin.Type: ApplicationFiled: June 8, 2012Publication date: August 29, 2013Applicants: SK GLOBAL CHEMICAL CO., LTD., SK INNOVATION CO., LTD.Inventors: Dong Cheol Shin, Ho Seong Lee, Seong Kyun Kim, Sang Ick Lee, Sun Young Kim, Jong Sok Hahn, Chan Woong Jeon, Jeong Hwan Kim
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Patent number: 8513479Abstract: The present invention relates to a zinc ferrite catalyst, a method of producing the same, and a method of preparing 1,3-butadiene using the same. Specifically, the present invention relates to a zinc ferrite catalyst which is produced in a pH-adjusted solution using a coprecipitation method, a method of producing the same, and a method of preparing 1,3-butadiene using the same, in which the 1,3-butadiene can be prepared directly using a C4 mixture including n-butene and n-butane through an oxidative dehydrogenation reaction. The present invention is advantageous in that 1,3-butadiene can be obtained at a high yield directly using a C4 fraction without performing an additional process for separating n-butene, as a reactant, from a C4 fraction containing impurities.Type: GrantFiled: May 8, 2008Date of Patent: August 20, 2013Assignees: SK Global Chemical Co., Ltd, SK Innovation Co., Ltd.Inventors: Young Min Chung, Seong Jun Lee, Tae Jin Kim, Seung Hoon Oh, Yong Seung Kim, In Kyu Song, Hee Soo Kim, Ji Chul Jung, Ho Won Lee
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Publication number: 20130184398Abstract: Provided is a poly(alkylene carbonate) resin composition having superior low-temperature resistance, including: a) a poly(alkylene carbonate) resin prepared by copolymerization of carbon dioxide and at least one epoxide compound selected from the group consisting of (C2-C20)alkyleneoxide substituted or unsubstituted with halogen, (C1-C20)alkyloxy, (C6-C20)aryloxy, or (C6-C20)ar(C1-C20)alkyloxy; (C4-C20)cycloalkyleneoxide substituted or unsubstituted with halogen, (C1-C20)alkyloxy, (C6-C20)aryloxy or (C6-C20)ar(C1-C20)alkyoxy; and (C8-C20)styreneoxide substituted or unsubstituted with halogen, (C1-C20)alkyloxy, (C6-C20)aryloxy, (C6-C20)ar(C1-C20)alkyloxy, or (C1-C20)alkyl; and b) any one or two or more partially aromatic polyesters selected from polyester based on aliphatic and aromatic dicarboxylic acid and an aliphatic dihydroxy compound, and aliphatic polyesters prepared from aliphatic dicarboxylic acid and aliphatic diol.Type: ApplicationFiled: January 16, 2013Publication date: July 18, 2013Applicants: SK GLOBAL CHEMICAL CO., LTD., SK INNOVATION CO., LTD.Inventors: SK INNOVATION CO., LTD., SK GLOBAL CHEMICAL CO., LTD.
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Publication number: 20130172434Abstract: Provided herein are a method for preparing a resin composition for an expandable polypropylene carbonate and an expandable polypropylene carbonate prepared therefrom. More particularly, the present invention relates to a method for preparing a resin composition for an expandable polypropylene carbonate capable of using supercritical carbon dioxide as a foaming agent and preparing a foam having excellent moldability by an appropriate foaming method, and an expandable polypropylene carbonate prepared therefrom. The expandable polypropylene carbonate capable of having high magnification, excellent thermal stability, and dimensional stability may be prepared by using the resin composition according to the present invention.Type: ApplicationFiled: December 27, 2012Publication date: July 4, 2013Applicants: SK GLOBAL CHEMICAL CO., LTD., SK INNOVATION CO., LTD.Inventors: SK INNOVATION CO., LTD., SK GLOBAL CHEMICAL CO., LTD.
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Publication number: 20130129928Abstract: Provided is a resin composition for paper-coating comprising aliphatic polycarbonate having an average molecular weight of 30,000 to 300,000 obtained by reaction of one or at least two different kinds of epoxide compounds selected from a group consisting of (C2-C10)alkylene oxide substituted or unsubstituted with carbon dioxide, halogen, or alkoxy; (C4-C20)cycloalkylene oxide substituted or unsubstituted with halogen or alkoxy; and (C8-C20)styrene oxide substituted or unsubstituted with halogen, alkoxy, alkyl or aryl, wherein it contains 0 to 40 weight % of polyolefin-based resin such as polyethylene or polypropylene, based on the total amount of the composition. In addition, the present invention relates to a paper coating method of extrusion-coating the resin composition for paper-coating on paper at 130 to 250° C. to manufacture a coated paper.Type: ApplicationFiled: November 21, 2012Publication date: May 23, 2013Applicants: SK GLOBAL CHEMICAL CO., LTD., SK INNOVATION CO., LTD.Inventors: SK INNOVATION CO., LTD., SK GLOBAL CHEMICAL CO., LTD.
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Patent number: 8436113Abstract: There is provided a method for producing copolymer that is composed of ethylene and alpha-olefin by a solution polymerization, and more specifically, a method for producing copolymer that is composed of ethylene and aromatic monomer as main components by using a transition metal catalyst including a cyclopentadiene derivative, and one or more anionic ligand having aryloxy group in which an aryl derivative is substituted at an ortho-positionType: GrantFiled: December 14, 2010Date of Patent: May 7, 2013Assignees: SK Innovations Co., Ltd., SK Global Chemical Co., Ltd.Inventors: Hwan Kyu Jung, Young Wook Kim, Byoung Tak Yim, Ho Seong Lee, Myung Ahn Ok, Jong Sok Hahn, Dong Cheol Shin
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Patent number: 8410328Abstract: A method of preparing multicomponent bismuth molybdate catalysts composed of four metal components and a method of preparing 1,3-butadiene using the catalyst, and particularly, to multicomponent bismuth molybdate catalysts composed of a divalent cationic metal, a trivalent cationic metal, bismuth and molybdenum, a preparation method thereof, and a method of preparing 1,3-butadiene from a C4 mixture including n-butene and n-butane using oxidative dehydrogenation are described.Type: GrantFiled: August 24, 2008Date of Patent: April 2, 2013Assignees: SK Innovation Co., Ltd., SK Global Chemical Co., Ltd.Inventors: Young Min Chung, Tae Jin Kim, Seong Jun Lee, Yong Seung Kim, Seung Hoon Oh, In Kyu Song, Hee Soo Kim, Ji Chul Jung, Ho Won Lee
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Publication number: 20130075666Abstract: Disclosed is a polymer electrolyte composition, a gel-type polymer electrolyte obtained by mixing the same at normal temperature, and a dye-sensitized solar cell containing the electrolyte. Since the poly(alkylene carbonate)-based polymer is included, a crosslinking process by radiation of heat or UV is not required when the polymer electrolyte is manufactured, such that a manufacturing process is simple. Accordingly, the polymer electrolyte is useful for mass production of a solar cell and maintained in a uniform state without a phase separation between two components due to excellent affinity between the polymer and the organic solvent included in the electrolyte, and has excellent electrode-electrolyte interface property in the solar cell due to an adhesive property of the gelled polymer electrolyte.Type: ApplicationFiled: March 27, 2012Publication date: March 28, 2013Applicants: SK Global Chemical Co., Ltd., SK INNOVATION CO., LTD.Inventors: Yonggyu Han, Sujith Sudevan, MyungAhn Ok, Jisu Jeong, SungJae Na, KwangJin Chung, Dong Won Kim, YeonJeong Choi
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Publication number: 20130072611Abstract: The present invention provides an ester plasticizer for polyvinyl chloride (PVC) resin, epoxy resin or urethane resin and a method of preparing the same. More particularly, the present invention provides an ester plasticizer using triacetin and coconut oil-based biodiesel as raw materials, which can prepare a resin composition having excellent plasticizing efficiency and improved physical properties such as tensile strength and the like. When a polyvinyl chloride resin or the like is manufactured using the ester plasticizer, there are advantages in that an environment-friendly product having an excellent plasticizing efficiency and in that the physical properties such as hardness, tensile strength, etc. of the product are improved.Type: ApplicationFiled: February 28, 2011Publication date: March 21, 2013Applicants: SK GLOBAL CHEMICAL CO., LTD., SK INNOVATION CO., LTD.Inventors: Tae Wook Kwon, Sung Gi Lee, Ki Nam Chung, Seung Gweon Hong
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Patent number: 8399375Abstract: The invention relates to a supported metallocene catalyst composition and a process for the preparation of polyolefin using the same. A supported metallocene catalyst composition according to the invention is prepared by bringing a compound of a group IV transition metal into contact with an inorganic or organic porous carrier treated with an ionic compound. Advantages of a supported metallocene catalyst composition of the invention include an increase in the catalyst activity during polymerization of slurry and an olefin compound in the vapor phase even at a low content of metallocene metal components within the carrier, and an improvement in solving process problems such as fouling, sheeting, plugging or the like.Type: GrantFiled: March 26, 2009Date of Patent: March 19, 2013Assignees: SK Global Chemical Co., Ltd., SK Innovation Co., Ltd.Inventors: Seungyeol Han, Myungahn Ok, Young-Soo Ko, Chang-il Lee
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Patent number: 8367885Abstract: This invention relates to a method of preparing a multicomponent bismuth molybdate catalyst by changing the pH of a coprecipitation solution upon coprecipitation and a method of preparing 1,3-butadiene using the catalyst. The multicomponent bismuth molybdate catalyst, coprecipitated using a solution having an adjusted pH, the preparation method thereof, and the method of preparing 1,3-butadiene through oxidative dehydrogenation using a C4 mixture including n-butene and n-butane as a reactant are provided. The C4 raffinate, containing many impurities, is directly used as a reactant without an additional process for separating n-butane or extracting n-butene, thus obtaining 1,3-butadiene at high yield. The activity of the multicomponent bismuth molybdate catalyst can be simply increased through precise pH adjustment upon coprecipitation, which is not disclosed in the conventional techniques.Type: GrantFiled: May 8, 2008Date of Patent: February 5, 2013Assignees: SK Innovation Co., Ltd, SK Global Chemical Co., Ltd.Inventors: Young Min Chung, Seong Jun Lee, Tae Jin Kim, Seung Hoon Oh, Yong Seung Kim, In Kyu Song, Hee Soo Kim, Ji Chul Jung, Ho Won Lee
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Publication number: 20130005893Abstract: The present invention relates to a polyolefin composition for an interior sheet/film. The polyolefin composition of the present invention for an interior sheet comprises 70 to 99 wt % of polyolefin and 1 to 30 wt % of modified polyethylene terephthalate having a melting point of 130 to 180° C. The polyolefin composition of the present invention is environmentally friendly and has good physical properties such as workability, printing characteristics, and adhesiveness. In addition, sheets having various thicknesses can be produced by extrusion without having to stretch the sheets, and thus the sheets can be used separately or in combination in various application fields.Type: ApplicationFiled: February 12, 2010Publication date: January 3, 2013Applicant: SK Global Chemical Co., Ltd.Inventors: Sang Min Kwon, Seok Kim, Tae Keun Lee, Woon Ki Chung
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Publication number: 20120288709Abstract: Provided is a molded body where aliphatic polycarbonate and polypropylene are laminated in two or more layers, and more particularly, if aliphatic polycarbonate and polypropylene according to the present invention are co-extruded and bi-axially oriented, since two layers are easily attached by only a simple process while an additional process for introducing a barrier layer and an adhesion agent or a adhesion layer (tie layer) are not provided, stripping does not occur, excellent oxygen barrier property may be provided as compared to only bi-axially oriented polypropylene, in the case where aliphatic polycarbonate is present on a surface layer, a heat sealing property and a thermal adhesion property to paper may be provided at low temperatures, and an additional adhesion agent or adhesion layer (tie layer) are not required, cost is reduced and a layer constitution is simplified to significantly reduce manufacturing costs.Type: ApplicationFiled: May 8, 2012Publication date: November 15, 2012Applicants: SK GLOBAL CHEMICAL CO., LTD., SK INNOVATION CO., LTD.Inventors: MinHo Jeon, MoonJung Choi, MyungAhn Ok
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Patent number: 8309779Abstract: Disclosed herein is a catalyst system for selective oligomerization of ethylene, which comprises a P—C—C—P frame-work ligand, which is (R1)(R2)P—(R5)CHCH(R6)—P(R3)(R4), and a chromium-based metal compound. Also disclosed is a method of greatly enhancing the activity and selectivity of oligomerization, such as trimerization or tetramerization, using a ligand having a specific steric arrangement structure.Type: GrantFiled: December 24, 2007Date of Patent: November 13, 2012Assignees: SK Innovation Co., Ltd., SK Global Chemical Co., Ltd.Inventors: Taek Kyu Han, Sung Seok Chae, Sang Ook Kang, Kyung Ryang Wee, Sung Kwan Kim
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Publication number: 20120232245Abstract: Provided is a method for preparing poly(alkylene carbonate) containing ether linkages, by the copolymerization of an epoxy compound and carbon dioxide, with a trivalent metal complex prepared from a salen type ligand containing a quaternary ammonium salt, and a double metal cyanide (DMC) catalyst together. The amount of ether linkages can be controlled by regulating the weight ratio of two catalysts and the carbon dioxide pressure.Type: ApplicationFiled: February 27, 2012Publication date: September 13, 2012Applicants: SK GLOBAL CHEMICAL CO., LTD., SK INNOVATION CO., LTD.Inventors: JISU JEONG, SUNGJAE NA, SUJITH SUDEVAN, MYUNGAHN OK, YONGGYU HAN, KWANGJIN CHUNG, BUNYEOUL LEE, KODIYAN VARGHESE JOBI
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Patent number: 8222361Abstract: The present invention relates to a method for the production of an ethylene/propylene/diene copolymer by means of solution polymerization, and more specifically one for a copolymer whose main components are ethylene, propylene and diene monomers using a catalyst of a transition metal coordination compound; the constituent components and characteristics of the copolymer being as follows. The catalyst composition provided by the present invention, which is used to produce a copolymer of which (a) the ethylene content is from 30 wt. % to 80 wt. %, (b) the propylene content is from 19.9% to 60 wt. % and (c) the diene content is from more than 0 wt. % to 15 wt.Type: GrantFiled: December 21, 2009Date of Patent: July 17, 2012Assignees: SK Innovation Co., Ltd., SK Global Chemical Co., Ltd.Inventors: Byoungtak Yim, Youngwook Kim, Myungahn Ok, Jongsok Hahn, Dongcheol Shin
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Publication number: 20120130086Abstract: This invention relates to a chromium complex compound for selective ethylene oligomerization including a chiral ligand, and to a method of selectively preparing 1-hexene or 1-octene from ethylene using the same.Type: ApplicationFiled: March 3, 2010Publication date: May 24, 2012Applicants: SK GLOBAL CHEMICAL CO., LTD., SK INNOVATION CO., LTD.Inventors: Tack-Kyu Han, Sang-Ook Kang, Sung-Kwan Kim
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Publication number: 20120077914Abstract: The present invention relates to an ester compound using alicyclic polyhydric acid and to a plasticizer for plastics, particularly, polyvinylchloride (PVC), including the ester compound More particularly, the present invention relates to a plasticizer, which is derived by the esterification reaction of alicyclic polyhydric acid and alcohol. When a polyvinylchloride resin is manufactured using the plasticizer, there are advantages in that the obtained products are excellent in terms of plasticizing efficiency, and in that their physical properties, such as hardness, tensile strength and the like, can be improved.Type: ApplicationFiled: June 4, 2009Publication date: March 29, 2012Applicants: SK GLOBAL CHEMICAL CO., LTD., SK INNOVATION CO., LTD.Inventors: Ki Nam Chung, Seung Gweon Hong, Tae Wook Kwon, Ho Wang
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Publication number: 20120012363Abstract: Disclosed is uncrosslinked linear medium-density polyethylene resin composition for a power cable, which is applicable to an insulating layer, a semi-conducting layer or a sheath layer. Specifically, the uncrosslinked polyethylene composition includes: 100 parts by weight of a polymer comprising a linear medium-density polyethylene resin comprising an ?-olefin having 4 or more carbon atoms as a comonomer and having a melt index of 0.6-2.2 g/10 min (at 190° C. under a load of 5 kg), a differential scanning calorimetry (DSC) enthalpy of 130-190 joule/g and a molecular weight distribution of 2-30; and 0.1 to 10 parts by weight of one or more additive(s) selected from a flame retardant, an oxidation stabilizer, a UV stabilizer, a heat stabilizer and a process aid.Type: ApplicationFiled: March 22, 2010Publication date: January 19, 2012Applicants: SK GLOBAL CHEMICAL CO., LTD., SK INNOVATION CO., LTD.Inventors: Kyucheol Cho, Moonseok Lee, Hongdae Kim, Sungseok Chae