| SK Chemicals Co., Ltd. Patent applications |
| Patent application number | Title | Published |
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| 20160137834 | POLYMER RESIN COMPOSITION HAVING EXCELLENT CHEMICAL RESISTANCE - The present invention relates to a polymer resin composition that is capable of providing an environmentally friendly biomass-containing synthetic resin having improved chemical resistance. The present invention provides a polymer resin composition including: a polyester copolymer including a residue of a dicarboxylic acid component containing terephthalic acid, and a residue of a diol component including dianhydrohexitol; and one or more copolymers selected from the group consisting of an unsaturated nitrile-diene-based rubber-aromatic vinyl graft copolymer, an alkyl methacrylate-diene-based rubber-aromatic vinyl graft copolymer, and an alkyl methacrylate-silicone/alkyl acrylate graft copolymer, and which has a tensile strength loss defined in the following Equation 1 ranging from 0.5 to 30%. | 05-19-2016 |
| 20160122536 | CHEMICAL RESISTANT POLYMER RESIN COMPOSITION FOR VEHICLE OVERHEAD CONSOLE - A chemical resistant polymer resin composition for an overhead console includes a polyester resin including a residue of a dicarboxylic acid component containing terephthalic acid and a residue of a diol component containing 5 to 60 mol % of isosorbide, 5 to 80 mol % of cyclohexanedimethanol, and a residual amount of other diol compounds; polycarbonate; and an unsaturated nitrile-aromatic vinyl-alkylacrylate graft copolymer based on the total weight of the polyester resin, polycarbonate, and unsaturated nitrile-aromatic vinyl-alkylacrylate graft copolymer. The composition further includes 0.1 to 10 parts by weight of a weather resistant additive, based on 100 parts by weight of the polyester resin, polycarbonate, and unsaturated nitrile-aromatic vinyl-alkylacrylate graft copolymer. | 05-05-2016 |
| 20150368460 | POLYMER RESIN COMPOSITION HAVING EXCELLENT IMPACT RESISTANCE OR HEAT RESISTANCE - 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. | 12-24-2015 |
| 20150343076 | MULTIVALENT PNEUMOCOCCAL POLYSACCHARIDE-PROTEIN CONJUGATE COMPOSITION - 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. | 12-03-2015 |
| 20150231225 | PRODUCTION METHOD FOR CAPSULAR POLYSACCHARIDE HAVING PNEUMOCOCCAL SEROTYPE - The present invention provides an improved method of producing a capsular polysaccharide having a pneumococcal serotype. The method according to the present invention includes a step of additionally culturing bacterial cells producing a pneumococcal serotype without pH adjustment, thereby removing a protein precipitation process by acidification with a pH adjuster. | 08-20-2015 |
| 20150197605 | POLYARYLENE SULFIDE AND A PREPARATION METHOD THEREOF - The present invention relates to a polyarylene sulfide having more improved miscibility with other polymer materials or fillers, and a method of preparing the same. At least part of end groups of the main chain of the polyarylene sulfide is carboxyl group (—COOH) or amine group (—NH | 07-16-2015 |
| 20150045749 | PERCUTANEOUS ABSORPTION PREPARATION CONTAINING DONEPEZIL, AND METHOD FOR PREPARING SAME - Provided is a transdermal delivery system (for example, in the form of a patch) having a double-layer structure including a drug-containing matrix layer and an adhesive layer, wherein the drug-containing matrix layer is obtained by completely dissolving donepezil using a certain polymer and then formulating along with an adhesive; and a process for preparing the same. The transdermal delivery system according to the present invention does not show any crystallization of donepezil in the formulation, can release donepezil at a uniform rate for a long time, and can inhibit the release dumping phenomenon that occurs in a transdermal delivery system having a single-layer structure. | 02-12-2015 |
| 20140350215 | METHOD FOR PREPARING POLYARYLENE SULFIDE HAVING REDUCED IODINE CONTENT - This disclosure relates to a method for preparing polyarylene sulfide having reduced iodine content while having excellent thermal stability, specifically to a method comprising polymerization reacting a composition comprising diiodide aromatic compounds, sulfur compounds, and a polymerization terminator. The preparation method may effectively reduce iodine content of polyarylene sulfide to prevent corrosion of post processing equipment, improve properties of polyarylene sulfide such as thermal stability, and the like, and thus, it may be usefully applied in the industrial field relating to preparation of polyarylene sulfide. | 11-27-2014 |
| 20140302297 | POLYLACTIC ACID RESIN COMPOSITION AND A PACKAGING FILM - The present invention relates to a polylactic acid resin composition useful as a packaging material which has not only improved flexibility but also superior external appearance and superior properties such as mechanical property, transparency, heat resistance, anti-blocking property, workability of a film, and the like, and a packaging film including the same. | 10-09-2014 |
| 20140220104 | PATCH CONTAINING RIVASTIGMINE - The present invention relates to a rivastigmine-containing patch having improved storage stability and proper release property. | 08-07-2014 |
| 20140213647 | COMPOUND USEFUL FOR PREVENTING OR TREATING IRRITABLE BOWEL SYNDROME AND COMPOSITION INCLUDING SAME - The present invention provides a compound of formula (I) or a prodrug thereof useful for treating or preventing irritable bowel syndrome, and a composition comprising the compound as an active ingredient. Also, the present invention provides a method for treating or preventing irritable bowel syndrome, which comprises administrating a therapeutically or prophylactically effective amount of the compound or the composition to a subject in need of treating or preventing irritable bowel syndrome. | 07-31-2014 |
| 20140194592 | POLYARYLENE SULFIDE RESIN WITH EXCELLENT LUMINOSITY AND PREPARATION METHOD THEREOF - The present invention relates to a polyarylene sulfide that is prepared from a composition including 100 parts by weight of solid sulfur, 500 to 10,000 parts by weight of iodinated aryl compounds, and 0.03 to 30 parts by weight of a sulfur-containing polymerization terminator with respect to 100 parts by weight of the solid sulfur, and has a melting temperature (Tm) of 255 to 285° C., and luminosity of 40 or higher as defined by the CIE Lab color model, and a process of preparing the same. The PAS resin is prepared from a composition including a sulfur-containing polymerization terminator and thus has excellent thermal properties and luminosity. | 07-10-2014 |
| 20140194501 | COMPOSITION FOR EYELASH GROWTH - 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 F2α analogues. | 07-10-2014 |
| 20140187775 | COMPOSITION FOR REDUCING SKIN WRINKLES INCLUDING PDE5 INHIBITOR - 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. | 07-03-2014 |
| 20140179701 | COMPOSITION FOR REDUCING SKIN WRINKLES INCLUDING PDE5 INHIBITOR - 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. | 06-26-2014 |
| 20140072531 | METHOD FOR PREPARING MICROPARTICLES WITH REDUCED INITIAL BURST AND MICROPARTICLES PREPARED THEREBY - A method for preparing polymer microparticles with a reduced initial burst, and the polymer microparticles prepared thereby, the method including: contacting polymer microparticles with an alcohol aqueous solution, the polymer microparticles prepared thereby, and use for drug delivery of the polymer microparticles. | 03-13-2014 |
| 20140039149 | COPOLYMER POLYESTER RESIN AND MOLDED PRODUCT USING SAME - 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—(CH | 02-06-2014 |
| 20140037931 | POLYLACTIC ACID RESIN FILM - The present invention relates to a polylactic acid resin film which has excellent flexibility, mechanical properties, stability, and transparency while having a specific biodegradability of the polylactic acid resin, and is useful as a packaging material. | 02-06-2014 |
| 20140018497 | COPOLYMER POLYESTER RESIN AND MOLDED PRODUCT USING SAME - 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 HOH | 01-16-2014 |
| 20140018484 | POLYESTER BINDER RESIN FOR COATING AND COATING COMPOSITION CONTAINING SAME - 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. | 01-16-2014 |
| 20140011976 | POLYESTER RESIN RESULTING FROM THE COPOLYMERISATION OF LACTIC ACID AND ISOSORBIDE, AND A PRODUCTION METHOD THEREFOR - 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. | 01-09-2014 |
| 20140004330 | POLYLACTIC ACID RESIN, PREPARATION METHOD THEREOF, AND PACKING FILM COMPRISING THE SAME | 01-02-2014 |
| 20130331608 | DIIMMONIUM-BASED COMPONENT AND NEAR INFRARED ABSORPTION FILTER USING SAME - 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 | 12-12-2013 |
| 20130315689 | FIBER REINFORCED PLASTIC BOLT AND METHOD FOR PRODUCING THE SAME - 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. | 11-28-2013 |
| 20130296534 | FUSION PROTEIN HAVING FACTOR IX ACTIVITY - 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. | 11-07-2013 |
| 20130295306 | POLYESTER RESIN COMPOSITION AND A PRODUCTION METHOD THEREFOR - 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. | 11-07-2013 |
| 20130245066 | 2-Pyridyl substituted imidazoles as ALK5 and/or ALK4 inhibitors - 2-pyridyl-substituted imidazoles which are used advantageously in the treatment of diseases mediated by ALK 5 or ALK 4 receptor or both. | 09-19-2013 |
| 20130236945 | Fusion Protein Having Factor VII Activity - 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. | 09-12-2013 |
| 20130224257 | METHOD FOR PREPARING MICROSPHERES AND MICROSPHERES PRODUCED THEREBY - 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. | 08-29-2013 |
| 20130217835 | POLYESTER/POLYCARBONATE BLEND HAVING EXCELLENT THERMAL STABILITY AND COLOR STABILITY - 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 %. | 08-22-2013 |
| 20130210811 | PICOLINAMIDE AND PYRIMIDINE-4-CARBOXAMIDE COMPOUNDS, PROCESS FOR PREPARING AND PHAMACEUTICAL COMPOSITION COMPRISING THE SAME - 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 11β-HSD1 enzyme. The picolinamide and pyrimidine-4-carboxamide compounds of the present invention are selective inhibitors of human-derived 11β-HSD1 enzymes, and are useful in an agent for preventing, regulating, and treating diseases related to glucocorticoid regulation in which human-derived 11β-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. | 08-15-2013 |
| 20130183741 | MDCK-DERIVED CELL LINES ADAPTED TO SERUM-FREE CULTURE AND SUSPENSION CULTURE AND METHOD FOR PREPARING VACCINE VIRUS USING THE CELLS - 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. | 07-18-2013 |
| 20130137661 | Gonadotropin Releasing Hormone Receptor Antagonist, Preparation Method Thereof And Pharmaceutical Composition Comprising The Same - Disclosed are compounds useful as gonadotrophin-releasing hormone (“GnRH”) receptor antagonist. | 05-30-2013 |
| 20130116484 | CATION-EXCHANGED ZEOLITE CATALYST AND PROCESS FOR PRODUCING MONO-IODO BENZENE THROUGH TRANSIODINATION BY USING IT - 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. | 05-09-2013 |
| 20130072642 | BLEND OF POLYLACTIC ACID RESIN AND COPOLYESTER RESIN, AND MOLDED PRODUCT USING SAME - A blend of polylactic acid resin and copolyester resin and a molded article using the same having superior impact resistance and heat resistance are disclosed. The blend of polylactic acid resin and copolyester resin includes: 5 to 95 weight % of polylactic acid resin; and 5 to 95 weight % of copolyester resin which is a copolymerization product of an acid component including terephthalic acid and a diol component including 5 to 99 mol % of 1,4-cyclohexanedimethanol and 1 to 60 mol % of isosorbide(bio monomer), and has a repeated structure of an acid moiety derived from the acid component and a diol moiety derived from the diol component. | 03-21-2013 |
| 20130046026 | COMPOSITION WITH IMPROVED SKIN PENETRATION FOR TRANSDERMAL DELIVERY OF TOLTERODINE - Disclosed is a composition for transdermal administration containing tolterodine. The composition comprises lidocaine or a pharmaceutically acceptable salt thereof to achieve enhanced skin penetration. The composition enhances the skin penetration of tolterodine. Therefore, a successful commercial application of a tolterodine-containing transdermal preparation based on the composition can be expected. | 02-21-2013 |
| 20130046025 | COMPOSITION WITH LOW SKIN IRRITATION FOR TRANSDERMAL DELIVERY OF TOLTERODINE - Disclosed is a composition for transdermal administration containing tolterodine. The composition comprises at least one essential oil as an abirritant to minimize skin irritation caused by tolterodine. The composition relieves skin irritation caused by tolterodine. Therefore, a successful commercial application of a tolterodine-containing transdermal preparation based on the composition can be expected. | 02-21-2013 |
| 20130030174 | COMPOSITION FOR REDUCING SKIN WRINKLES INCLUDING PDE5 INHIBITOR - 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. | 01-31-2013 |
| 20130018052 | 2-PYRIDYL SUBSTITUTED IMIDAZOLES AS ALK5 AND/OR ALK4 INHIBITORS - The present invention provides a novel 2-pyridyl substituted imidazole derivative, or a pharmaceutically acceptable salt or solvate thereof, which selectively inhibits the transforming growth factor-β (TGF-β) type I receptor (ALK5) and/or the activin type I receptor (ALK4); a pharmaceutical composition comprising same as an active ingredient; and a use of the 2-pyridyl substituted imidazole derivative for the manufacture of a medicament for preventing or treating a disease mediated by ALK5 and/or ALK4 receptors in a mammal. | 01-17-2013 |
| 20120330061 | PREPARATION METHOD OF N,N'-DIALKYL-3,3'-DITHIODIPROPIONAMIDE - This disclosure relates to a method for preparing N,N′-dimethyl-3,3′-dithiodipropionamides, which is an intermediate compound used for preparation of substituted 3-isothiazolones, including reacting 3,3′-dithiopropionic acid alkyl ester with an alkylamine at a temperature of from 0 to 50° C. in the presence of a polar solvent. | 12-27-2012 |
| 20120322971 | RECYCLABLE POLYARYLENE SULFIDE AND PREPARATION METHOD THEREOF - This disclosure relates 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. | 12-20-2012 |
| 20120302726 | METHOD FOR PREPARING POLYARYLENE SULFIDE HAVING REDUCED IODINE CONTENT - This disclosure relates to a method for preparing polyarylene sulfide having reduced iodine content while having excellent thermal stability, specifically to a method comprising polymerization reacting a composition comprising diiodide aromatic compounds, sulfur compounds, and a polymerization terminator. The preparation method may effectively reduce iodine content of polyarylene sulfide to prevent corrosion of post processing equipment, improve properties of polyarylene sulfide such as thermal stability, and the like, and thus, it may be usefully applied in the industrial field relating to preparation of polyarylene sulfide. | 11-29-2012 |
| 20120128807 | COMPOSITION FOR PREVENTING OR TREATING IRRITABLE BOWEL SYNDROME - The present invention relates to a composition or a method for treating or preventing irritable bowel syndrome. The present invention uses | 05-24-2012 |
| 20120123162 | TRANSDERMAL COMPOSITION COMPRISING TOLTERODINE - 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. | 05-17-2012 |
| 20120029163 | METHOD OF PREPARING A HEAT-RESISTANT POLYAMIDE - The present invention relates to a method of prepairing a heat-resistant polyamide by carrying out condensation polymerisation with a monomer mixture including a diester compound and a diamine compound. The present invention provides an economical method of prepairing a heat-resistant polyamide in that a monomer, a raw material, is simply and chiefly prepared, and the polymerizing reaction time is short because it does not need solvent separately. | 02-02-2012 |
| 20110275847 | VANADIUM PHTHALOCYANINE COMPOUNDS AND NEAR-INFRARED ABSORPTION FILTER USING THE SAME - A novel vanadium phthalocyanine compound with low absorptivity in the visible light region and high absorptivity in the near-infrared light region, and a near-infrared absorption filter using the same are disclosed. The near-infrared absorption vanadium phthalocyanine compound is represented by Formula 1 of claim | 11-10-2011 |
| 20110269935 | METHOD FOR PREPARING POLYARYLENE SULFIDE WITH REDUCED FREE IODINE CONTENT - 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. | 11-03-2011 |
| 20110269933 | METHOD FOR PREPARING A POLYESTER RESIN - Disclosed is a method for preparing a polyester resin, wherein phosphate additives are used in preparing polyester resin to improve the reactive property of the esterification reaction or transesterification, as well as the flame retardancy property and the color stability of a polyester resin. The method for preparing a polyester resin comprises the steps of: esterification reacting and/or transesterifying diacid ingredients diol ingredients in the presence of one or more phosphate additives selected from the group consisting of the compounds as defined in Chemicals in the detailed description of the invention; and polycondensing the products obtained from the esterification reaction and/or transesterification. | 11-03-2011 |
| 20110269879 | HIGH-STRENGTH POLYPHENYLENE SULFIDE/POLYETHYLENE TEREPHTHALATE BLEND RESIN COMPOSITION AND METHOD FOR PREPARING THE SAME - The present invention relates to a high-strength inflammable blend resin composition including a polyphenylene sulfide resin and a polyethylene terephthalate resin. More specifically, the resin composition of the present invention includes: a basic blend resin containing 10 to 80 wt. % of a polyphenylene sulfide resin, and 20 to 90 wt. % of a polyethylene terephthalate resin; and 0.1 to 20 parts by weight of a modified polystyrene or a styrene-based elastomer with respect to 100 parts by weight of the basic blend resin. | 11-03-2011 |
| 20110251342 | METHOD FOR PREPARING A POLYESTER RESIN IN WHICH ISOSORBIDE IS COPOLYMERIZED - The present invention relates to a method for preparing a polyester resin in which isosorbide is copolymerized, and more particularly, to a method for preparing a copolymerized polyester resin containing isosorbide, comprising the steps of: adding glycols containing ethylene glycol and isosorbide to terephthalic acid or dimethyl terephthalate such that the feed molar ratio of total glycols to terephthalic acid or dimethyl terephthalate is 1.05 to 3.0 to allow an esterification reaction; and polycondensing the esterification product using titanium-based compounds of copolymers of titanium dioxide and silicon dioxide, and copolymers of titanium dioxide and zirconium dioxide, as a copolymerization catalyst, and using phosphorous compounds as a stabilizer. The copolymerized polyester resin containing isosorbide prepared according to the present invention exhibits superior reactive properties and productivity, and reduces the quantity of metal used as a catalyst and improves the clarity of a polymer. Further, a high molecular weight copolymerized polyester resin can be prepared using a small amount of catalyst. | 10-13-2011 |
| 20110245550 | PROCESS FOR PREPARING IODINATED AROMATIC COMPOUNDS - 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. | 10-06-2011 |
| 20110230635 | COPOLYMER POLYESTER RESIN AND MOLDED PRODUCT USING SAME - 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—R | 09-22-2011 |
| 20110230634 | COPOLYMER POLYESTER RESIN AND MOLDED PRODUCT USING SAME - 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 HOH | 09-22-2011 |
| 20110224400 | COPOLYMER POLYESTER RESIN AND MOLDED PRODUCT USING SAME - 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—(CH | 09-15-2011 |
| 20110217341 | METHOD FOR PREPARING MICROSPHERES AND MICROSPHERES PRODUCED THEREBY - The present invention relates to a method for preparing microspheres and microspheres prepared thereby, more particularly to a method for preparing a polymeric microsphere, including preparing an emulsion including a polymer compound, a drug, a water-insoluble organic solvent and a dispersion solvent and adding to the prepared emulsion a base or an acid to remove the water-insoluble organic solvent from the emulsion, a polymeric microsphere prepared thereby, and a composition for drug delivery including the microsphere. According to the present invention, a drug-containing polymer microsphere may be prepared quickly and simply without the solvent evaporation or solvent extraction process, thereby reducing water consumption and minimizing wastewater generation. | 09-08-2011 |
| 20100331552 | ACID SALT OF TOLTERODINE HAVING EFFECTIVE STABILITY FOR TRANSDERMAL DRUG DELIVERY SYSTEM - The present invention relates to an acid salt of tolterodine with superior stabililty and useful as a transdermal drug delivery system. More specifically, the present invention relates to a novel acid salt of tolterodine with superior stabililty to the conventional acid salts of tolterodine, which is useful as a pharmaceutical composition for the treatment of overactive bladder and can be formulated into a transdermal drug delivery system. | 12-30-2010 |
| 20100310687 | ANTI-GASTRITIS AND ANTI-ULCER AGENT CONTAINING MOMORDICAE SEMEN EXTRACT AND MOMORDICA SAPONIN I ISOLATED FROM THE SAME - The present invention relates to a Momordicae semen extract effective in the prevention and treatment of gastritis or gastric ulcer and | 12-09-2010 |
| 20100222617 | METHOD OF PREPARING IODINATED AROMATIC COMPOUNDS - The present invention relates to a method of preparing iodinated aromatic compounds, and more preferably a method of preparing iodinated aromatic compounds comprising a step of iodinating a reactant including an aromatic compound, a di-iodo aromatic compound or water, and iodine (I2) in the presence of a zeolite catalyst and oxygen. The method of the present invention has an advantage that by iodination of a reactant including the aromatic compound, and the di-iodo aromatic compound or water in the presence of the zeolite catalyst and oxygen, the temperature of the iodinating reactor can be controlled reliably and constantly, thereby resulting in improved productivity per unit weight of catalyst and inhibition of a side reaction in accordance with suppression of producing impurities. In addition, the productivity of the iodinated aromatic compound, preferably the di-iodo aromatic compound, more preferably a p-di-iodo aromatic compound can be improved, and thus can be widely used in the preparation of a di-iodo aromatic compound such as a p-di-iodo aromatic compound. | 09-02-2010 |
| 20100185031 | MANUFACTURING PROCESS FOR IODINATED AROMATIC COMPOUNDS - Disclosed is a method for preparing an iodinated aromatic compound. More specifically, disclosed is a method of preparing an iodinated aromatic compound by iodinating an aromatic compound in the presence of oxygen over a zeolite catalyst, in which the aromatic compound and its monoiodo compound, as raw materials, are allowed to react with iodine. In comparison with a method in which only the aromatic compound is used as a raw material without adding the monoiodo compound, the disclosed method can increase the productivity of diiodo compounds and the selectivity to a p-diiodo compound and, at the same time, suppress side reactions, thus lengthening the life span of the catalyst. | 07-22-2010 |
| 20100105845 | METHOD FOR PRODUCTION OF POLYARYLENE SULFIDE RESIN WITH EXCELLENT LUMINOSITY AND THE POLYARYLENE SULFIDE RESIN - 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. The process of polyarylene sulfide resin further includes a step of heating the polymerized product at a high temperature following the polymerization step, and uses the polymerization terminator in a suitable amount to control the molecular weight of polyarylene sulfide, thereby producing polyarylene sulfide with excellent thermal properties and luminosity. | 04-29-2010 |
| 20100094067 | METHOD OF PREPARING MONO-IODO BENZENE THROUGH TRANSIODINATION - The present invention relates to a method of preparing mono-iodo benzene with a transiodination reaction, and more preferably a method of preparing mono-iodo benzene including a step of performing transiodination of a reactant including benzene and at least a multi-iodo benzene selected from the group consisting of di-iodo benzene and tri-iodo benzene with an HY or HBeta type of zeolite having a Si/Al molar ratio of 10 to 100 as a catalyst. The method of the present invention has an advantage that iodine is recovered from by-products including m-di-iodo benzene, o-di-iodo benzene, and tri-iodo benzene obtained in the process of preparing p-di-iodo benzene, thereby resulting in minimizing the loss of iodine. | 04-15-2010 |
| 20100069632 | SALTS OF PYRROLOPYRIMIDINONE DERIVATIVES AND PROCESS FOR PREPARING THE SAME - The present invention relates to salts of a pyrrolopyrimidinone derivative having superior PDE-5 inhibition activity and a process for preparing the same. More particularly, the present invention relates to a crystalline acid addition salt prepared by reacting a pyrrolopyrimidinone derivative with an acid selected from gentisic acid, maleic acid, citric acid, fumaric acid and tartaric acid. With no hygroscopic property and superior long-term storage stability, photostability and thermal stability, the salts of the pyrrolopyrimidinone derivative are appropriate to be prepared into medications and, with superior PDE-5 inhibition activity, are useful for the treatment and prevention of erectile dysfunction, pulmonary arterial hypertension, chronic obstructive pulmonary disease, benign prostatic hypertrophy and lower urinary tract diseases. | 03-18-2010 |
| 20100022535 | 2-Pyridyl substituted imidazoles as ALK5 and/or ALK4 Inhibitors - 2-pyridyl-substituted imidazoles which are used advantageously in the treatment of diseases mediated by ALK 5 or ALK 4 inhibitors or both. | 01-28-2010 |
| 20090318569 | METHOD FOR PRODUCING MICROSPHERES LOADED WITH DRUGS AND MICROSPHERES LOADED WITH DRUGS PRODUCED THEREBY - The present invention relates to a method for producing polymeric microspheres loaded with drugs and polymeric microspheres loaded with drugs produced thereby, specifically a method for producing polymeric microspheres loaded with drugs, the method comprising the steps of a) adding a dispersion phase containing a high molecular compound, a drug, and a water-insoluble organic solvent to a dispersion solvent to produce an O/W (oil-in-water) type or 0/0 (oil-in-oil) type emulsion, or adding a W/O (water-in-oil) type emulsion, which is prepared by emulsifying an aqueous solution, in which a drug is dissolved, in a water-insoluble organic solvent, in which the high molecular compound is dissolved, to the dispersion solvent to produce a W/O/W (water-in-oil-in-water) type emulsion; and b) adding an ammonia solution to the emulsion produced in step a) to convert the water-insoluble organic solvent into water-soluble solvents, and polymeric microspheres loaded with drugs produced thereby. According to the present invention, the desired polymeric microspheres loaded with drugs can be simply produced with a small amount of water in a short period of time. | 12-24-2009 |
| 20080319022 | 2-Pyridyl substituted imidazoles as ALK5 and/or ALK4 inhibitors - 2-pyridyl-substituted imidazoles and their use in inhibiting ALK 5 and/or ALK 4 receptors is disclosed. | 12-25-2008 |
| 20080319012 | 2-Pyridyl substituted imidazoles as ALK5 and/or ALK4 inhibitors - 2-pyridyl-substituted imidazoles which are used advantageously in the treatment of diseases mediated by ALK 5 or ALK 4 receptor or both. | 12-25-2008 |
| 20080249314 | Optical Resolution Method of Amlodipine - The present invention relates to a method for optical resolution of amlodipines by using isopropanol solvent and optically active O,O′-dibenzoyl tartaric acid as chiral reagent. More particularly, the present invention relates to a method comprising (a) obtaining (R)— or (S)-amlodipine dibenzoyl tartrate salt or solvate thereof by reacting (R,S)-amlodipines with optically active O,O′-dibenzoyl tartaric acid in isopropanol solvent, and (b) treating the (R)— or (S)-amlodipine salt with a base, thus obtaining optically active amlodipine. | 10-09-2008 |
| 20080207614 | QUINAZOLINE DERIVATIVES FOR THE TREATMENT AND PREVENTION OF DIABETES AND OBESITY - The present invention relates to novel quinazoline derivatives effective in lowering blood glucose level and body weight, and a medicine for treatment and/or prevention of diabetes and/or obesity, which comprises the compound as an active ingredient. | 08-28-2008 |
