| HYOSUNG CORPORATION Patent applications |
| Patent application number | Title | Published |
|---|
| 20120036677 | METHOD FOR MANUFACTURING A COMPOSITE BUSHING, AND PARTIAL DISCHARGE DIAGNOSTIC SYSTEM FOR COMPOSITE BUSHING - Disclosed are a method of manufacturing a composite bushing and a diagnostic system for the partial discharge of the composite bushing that may provide a thin-film ultra high frequency (UHF) sensor to a composite bushing, thereby measuring a partial discharge of a composite bushing and preventing a safety accident of the composite bushing that may occur due to the partial discharge. | 02-16-2012 |
| 20110263416 | DEHYDROGENATION CATALYST - This invention relates to a dehydrogenation catalyst having a macropore size and a high active density of platinum, suitable for use in dehydrogenation of a hydrocarbon gas. This dehydrogenation catalyst having a macropore size and a high active density of platinum is highly active, has high active density per unit catalytic surface area, facilitates material transfer of reactants and products, delays deactivation due to coke formation, keeps the initial activity constant after being regenerated thanks to the disposal of coke, has high strength and so is resistant to external impact, and undergoes neither structural changes due to heat nor changes in the properties of active materials. | 10-27-2011 |
| 20100304115 | SHAPE MEMORY POLYAMIDE AND METHOD OF PRODUCING SHAPE MEMORY POLYAMIDE FABRIC USING THE SAME - Disclosed is a shape memory polyamide, produced by adding a polyvalent carboxylic acid and a polyvalent amine when polyamide is polymerized from e-caprolactam or hexamethylenediamine and adipic acid, and having an aromatic component which is introduced by one or more among the polyvalent carboxylic acid and the polyvalent amine and has a total amount ranging from 0.4 mol % to 10 mol % based on the amount of the raw material for polyamide. Also, a method of producing a shape memory polyamide fabric using the shape memory polyamide is provided. The polyamide fabric produced using the shape memory polyamide is a highly functional fabric which does not easily wrinkle and easily recovers its original shape even when wrinkled, and thus may be applied as material for various kinds of clothing. | 12-02-2010 |
| 20100249363 | Process for Preparing Polyethylenenaphthalate with 2,6-Naphthalenedicarboxylic Acid - The present invention relates to a process for preparing polyethylene naphthalate, comprising the steps of: esterifying 2,6-naphthalene dicarboxylic acid and ethylene glycol, or glycols using the two materials as major material to obtain prepolymer which comprises bis(beta-hydroxyethyl)naphthalate or low polymer as main material; and performing polycondensation reaction to thereby prepare polyethylene naphthalate. The process of the present invention has advantages of: enabling esterification with a low molar ratio of ethylene glycol to reduce reaction time, thereby increasing process efficiency; minimizing formation of side reaction products to improve properties; and preventing deterioration of the products by performing polycondensation at a low temperature to thereby obtain polyethylene naphthalate polymers of high quality. | 09-30-2010 |
| 20100228070 | Method for Achieving High Purity Separation and Refinement of Controlling Morphology and Particle Size of 2,6-Dimethylnaphthalene Dicarboxylic Crystals - The present invention relates to a method for achieving high purity separation and refinement by controlling morphology and particle size of 2,6-dimethylnaphthalene. And more particularly, the present invention relates to a method for obtaining high purity 2,6-dimethylnaphthalene crystals, in which crystallization is carried out with a solvent that enables the crystals to form a square-platy shape. During the process, crystallization variables such as, stirring speed, cooling speed, solvent and composition ratio, are adjusted to control morphology and particle size of 2,6-dimethylnaphthalene and to remove aggregation, thereby obtaining 2,6-dimethylnaphthalene crystals of high purity. | 09-09-2010 |
| 20100198181 | DISPOSABLE HYGIENE PRODUCTS APPLYING AN ELASTIC SPANDEX FIBER WITH HIGH POWER RETENTION - The present invention relates to disposable hygiene products such as a diaper or a sanitary napkin applying an elastic spandex fiber with high power retention. A polyurethane-based spandex fiber is produced by reacting an organic diisocyanate with a polymer diol to prepare a prepolymer, dissolving the prepolymer in an organic solvent, and reacting the resulting solution with a diamine and a monoamine. A disposable hygiene product having better functionality and wearing comfort is provided by using a spandex fiber as an elastic yarn, wherein the spandex fiber has power retention of 70% or more. | 08-05-2010 |
| 20100098945 | Polyethylene terephthalate filament having high tenacity for industrial use - A polyethylene terephthalate monofilament obtained by spinning a polyethylene terephthalate chip having an intrinsic viscosity of 0.8 to 1.3, which gives a stress-strain curve exhibiting an elongation of less than 2.5% at an initial stress of 2.0 g/d, with an initial modulus value of 80 to 160 g/d, an elongation of 7.5% or less in a stress range of from 2.0 g/d to 9.0 g/d, and an elongation of at least 2.0% or more in a stress range of from 10.0 g/d to the point of break, is provided. | 04-22-2010 |
| 20100036155 | METHOD AND APPARATUS FOR THE PURIFICATION OF HIGH-PURITY 2,6-NAPHTHALENE DICARBOXYLIC ACID - Disclosed is a method for purifying 2,6-naphthalenedicarboxylic acid (NDA) that is present in a solid state in a solution. According to the method, sintered metal membrane filtration units are used to efficiently separate and purify 2,6-naphthalenedicarboxylic acid separated after hydrogenation and crystallization in a continuous process. An apparatus for implementing the method is further provided. | 02-11-2010 |
| 20090288748 | Cellulose raw cord for rubber reinforcement - The present invention provides a lyocell raw cord prepared from at least 2-ply lyocell multifilaments, which gives a stress-strain curve exhibiting that (a) the lyocell raw cord has an elongation of 1.5% or less at an initial stress of 1.0 g/d, and an initial modulus value of 50 to 100 g/d; (b) has an elongation of 7% or less in a stress region of 1.0 g/d to 4.0 g/d; and (c) has an elongation of 1% or more at a tensile strength of 4.0 g/d to the breaking point, as measured in the dried state. | 11-26-2009 |
| 20090270539 | The method of preparation of polyethylene terephthalate nanocomposite with enhanced modulus - The present invention relates to a polyethylene terephthalate nanocomposite fiber with enhanced modulus, and specifically to a technique for preparing a PET nanocomposite fiber with excellent initial and high-temperature modulus, which comprises adding 1 to 4% by weight of a compound selected from the group consisting of C | 10-29-2009 |
| 20090215136 | PSEUDOMONAS SP, HN-72 AND PURIFICATION METHOD OF 2,6-NAPHTHALENE DICARBOXYLIC ACID USING THE SAME - Provided are a novel microorganism and a method for purifying 2,6-naphthalene dicarboxylic acid with high purity using the microorganism. The microorganism is | 08-27-2009 |
| 20090137776 | Process for producing poly-tetrahydrofuran - The present invention relates to a process for producing tetrahydrofuran polymer or tetrahydrofuran copolymer by using heteropolyacid catalyst, and more particularly, to a process for producing tetrahydrofuran polymer by using hydronium ion water having a pH of 5.5 or less as a reaction initiator in the initiation step. | 05-28-2009 |
| 20090043022 | Polyester Fiber Having Excellent Light-Shielding And Flame Retardant Characteristic And Textile Goods Using The Same - Disclosed herein is a Polyester Fiber Having Excellent Light-Shielding and Flame Retardant Characteristic. The Polyester Fiber comprises: phosphorus-based flame retardant 0.05˜5% by weight, based on phosphorus atom; and inorganic particles having 0.05˜1 μm average particle size 1-5% by weight, based on fiber weight. Further disclosed is Textile Goods prepared from the Polyester Fiber. The polyester fiber according to the present invention is prepared from polyester polymer having Intrinsic viscosity of 0.55˜0.75 dl/g and the Intrinsic viscosity difference of between the fiber and polymer (IV drop) is within 0.03 dl/g and it exhibits the excellent flame retardant and light shielding characteristic. Therefore, the polyester fiber can be applied to fiber for clothes, light shielding curtain for a car and blackout curtain for a house and theater. | 02-12-2009 |
| 20090035817 | Method for Preparing Transformants Expressing Benzaldehyde Dehydrogenase and Preparation of 2,6-Naphthalene Dicarboxylic Acid Using the Transformants - Disclosed herein are a method for preparing a transformant which carries a gene encoding benzaldehyde dehydrogenase derived from | 02-05-2009 |
| 20090011234 | Cellulose Multi-Filament - The present invention relates to cellulose fiber containing 500 to 2000 of filaments and having homogeneous physical properties and the multi-filaments according to the present invention is characterized in that the strength and the breaking elongation of the multi-filaments are 4 to 9 g/d and 4 to 15%, respectively. In particular, the present invention is characterized in that each mono-filament selected 100 strands from every three part divided from multi-filaments has properties as following: (a) 3 to 9 g/d in average strength, 7 to 15% in average breaking elongation and 0.035 to 0.055 in by birefringence, (b) the differences of the above three parts are below 1.0 g/d in average strength, 1.5% in breaking elongation and 0.7 denier in denier, (c) the CV (%) (coefficient of variation) of the above three parts are below 10%, and (d) the birefringence differences of the above three parts are below 0.004. | 01-08-2009 |
| 20080268736 | Dope Dyed Flame Retardant Polyester Fibers, Textile Products Therefrom and the Method of Manufacturing Thereof - The present invention relates to dope dyed flame retardant polyester fibers, textile products therefrom, and the method of manufacturing thereof. The polyester fiber comprises flame retardant polyester polymers containing 500-50,000 ppm of phosphorus-based flame retardant agent based on phosphorus atom, and 500 5,000 ppm of carbon black based on said polyester polymers. The polyester fibers can provide excellent fastness and flame retardant characteristic without occurring hazardous, materials such as a dioxin during an incineration, and can be applied for fiber products such as blackout curtain having an effective light shielding. | 10-30-2008 |
