Patents by Inventor Young-Taik Hong
Young-Taik Hong has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 9975995Abstract: The present invention relates to an ion conducting polymer including a partially branched block copolymer; a method of preparing the same; an ion conductor including the ion conducting polymer; an electrolytic membrane including the ion conducting polymer; a membrane-electrode assembly comprising the electrolytic membrane, and a battery comprising the same; and a separation membrane for a redox flow battery including the ion conducting polymer, and a redox flow battery comprising same. Specifically, the partially branched block copolymer includes: a first block including a hydrophilic first polymer; a second block derived from a hydrophobic second polymer having two or more reactive groups respectively on its both ends, in such a way as to form branching points forming side branches on a main chain; and optionally a third block including a hydrophobic third polymer.Type: GrantFiled: May 11, 2015Date of Patent: May 22, 2018Assignee: Korea Research Institute of Chemical TechnologyInventors: Young Taik Hong, Jang Yong Lee, Tae Ho Kim, Duk Man Yu, Seog Je Kim
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Patent number: 9540319Abstract: The present invention relates to an improved method for purifying a sulfonated aromatic monomer. The method is an economical method capable of providing a highly pure sulfonated aromatic monomer, in which a salt precipitation step and a recrystallization step are simplified while maintaining the reaction conditions used in a conventional method for synthesizing the sulfonated aromatic monomer, and a purification process is carried out using an easily available and stable chemical substance. The sulfonated aromatic monomer obtained by the purification method will be useful for the preparation of a polymer for a polymer electrolyte membrane and will be advantageous to synthesize polymer with high molecular weight.Type: GrantFiled: November 14, 2011Date of Patent: January 10, 2017Assignee: KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGYInventors: Young Taik Hong, Seog Je Kim, Ji Young Park, Dong Hyun Lee
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Patent number: 9325023Abstract: The present invention provides a method for manufacturing a membrane-electrode assembly for a polymer electrolyte fuel cell, in which the glass transition temperature of an electrolyte membrane is reduced using a hydrophilic solvent, and a membrane-electrode assembly for a polymer electrolyte fuel cell, manufactured by the method. In the method of the invention, the glass transition temperature of the electrolyte membrane to which a catalyst is transferred is reduced compared to that in a conventional method for manufacturing a membrane-electrode assembly for a polymer electrolyte fuel cell using the decal process. Thus, even to an electrolyte membrane material having a relatively high glass transition temperature, the catalyst may be transferred at a rate of 100% at a temperature of about 120° C., at which hot pressing is carried out. Thus, the problems associated with electrolyte membrane deterioration occurring in conventional methods can be solved.Type: GrantFiled: March 29, 2012Date of Patent: April 26, 2016Assignee: Korea Research Institute of Chemical TechnologyInventors: Young Taik Hong, Tae Ho Kim, Young Jun Yoon, Kyung Seok Yoon, Duk Man Yu
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Publication number: 20150307659Abstract: The present invention relates to an ion conducting polymer including a partially branched block copolymer; a method of preparing the same; an ion conductor including the ion conducting polymer; an electrolytic membrane including the ion conducting polymer; a membrane-electrode assembly comprising the electrolytic membrane, and a battery comprising the same; and a separation membrane for a redox flow battery including the ion conducting polymer, and a redox flow battery comprising same. Specifically, the partially branched block copolymer includes: a first block including a hydrophilic first polymer; a second block derived from a hydrophobic second polymer having two or more reactive groups respectively on its both ends, in such a way as to form branching points forming side branches on a main chain; and optionally a third block including a hydrophobic third polymer.Type: ApplicationFiled: May 11, 2015Publication date: October 29, 2015Inventors: Young Taik HONG, Jang Yong LEE, Tae Ho KIM, Duk Man YU, Seog Je KIM
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Publication number: 20140377685Abstract: The present invention provides a method for manufacturing a membrane-electrode assembly for a polymer electrolyte fuel cell, in which the glass transition temperature of an electrolyte membrane is reduced using a hydrophilic solvent, and a membrane-electrode assembly for a polymer electrolyte fuel cell, manufactured by the method. In the method of the invention, the glass transition temperature of the electrolyte membrane to which a catalyst is transferred is reduced compared to that in a conventional method for manufacturing a membrane-electrode assembly for a polymer electrolyte fuel cell using the decal process. Thus, even to an electrolyte membrane material having a relatively high glass transition temperature, the catalyst may be transferred at a rate of 100% at a temperature of about 120° C., at which hot pressing is carried out. Thus, the problems associated with electrolyte membrane deterioration occurring in conventional methods can be solved.Type: ApplicationFiled: March 29, 2012Publication date: December 25, 2014Applicant: Korea Research Institute of Chemical TechnologyInventors: Young Taik Hong, Tae Ho Kim, Young Jun Yoon, Kyung Seok Yoon, Duk Man Yu
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Publication number: 20140206899Abstract: The present invention relates to an improved method for purifying a sulfonated aromatic monomer. The method is an economical method capable of providing a highly pure sulfonated aromatic monomer, in which a salt precipitation step and a recrystallization step are simplified while maintaining the reaction conditions used in a conventional method for synthesizing the sulfonated aromatic monomer, and a purification process is carried out using an easily available and stable chemical substance. The sulfonated aromatic monomer obtained by the purification method will be useful for the preparation of a polymer for a polymer electrolyte membrane and will be advantageous to synthesize polymer with high molecular weight.Type: ApplicationFiled: November 14, 2011Publication date: July 24, 2014Applicant: KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGYInventors: Young Taik Hong, Seog Je Kim, Ji Young Park, Dong Hyun Lee
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Patent number: 8419918Abstract: A method of surface modifying a polyimide film, a method of manufacturing a flexible copper clad laminate using the same, and a flexible copper clad laminate (FCCL) having a two-layer structure manufactured thereby. The method of surface modifying a polyimide film is conducted by modifying the surface of a polyimide film through a first plasma treatment, dipping the polyimide film into a solution containing an ethyleneimine-based silane coupling agent prepared by mixing the compound of Formula 1 and the compound of Formula 2 at a molar ratio of with 0.25˜1, and then modifying the surface of the polyimide film through a second plasma treatment. The method of surface modifying a polyimide film is advantageous because it may be substituted for a conventional surface treatment processes using ion beams.Type: GrantFiled: May 18, 2006Date of Patent: April 16, 2013Assignee: Korea Research Institute of Chemical TechnologyInventors: Young-Taik Hong, Hyung Dae Kang, Seog Je Kim, Jae Heung Lee
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Publication number: 20120077109Abstract: The present invention relates to a ceramic porous substrate, a reinforced composite electrolyte membrane using the same, and a membrane-electrode assembly having the same. The ceramic porous substrate comprises: a porous polymer base; and void structures formed on the surface of the porous polymer base by linking the space of the inorganic nanoparticles using a polymer binder or a silane-based inorganic binder. The ceramic porous substrate has improved mechanical properties compared to the porous polymer substrate alone, and the void structures thereof can be controlled in various ways.Type: ApplicationFiled: June 26, 2009Publication date: March 29, 2012Applicant: KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGYInventors: Young Taik Hong, Jong Ho Choi, Kyung Seok Yoon, Sang Young Lee
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Patent number: 7803460Abstract: A filament type nano-sized lone fiber and a method of producing the same are disclosed. In the method, a spinning solution or a spinning melt is electro-spun in drops using a spinneret to which a critical voltage is applied, and the spun drops are continuously collected on a multi-collector. The spinning solution is produced dissolving a blend or copolymer consisting of two or more kinds of polymers in a solvent. The spinning melt is produced by melting the polymers. The multi-collector is selected from the group consisting of a plate type collector, a roll type collector, and a combination thereof. The filament type nano-sized long fiber is processed into a yarn through one step during the electrospinning process, and thus, mechanical properties are better than those of conventional nanofiber non-woven fabric. Consequently, the filament type nano-sized long fiber can be utilized for the extended application.Type: GrantFiled: September 4, 2009Date of Patent: September 28, 2010Assignee: Korea Research Institute of Chemical TechnologyInventors: Jae Rock Lee, Seung Yong Jee, Hyo Joong Kim, Young Taik Hong, Seok Kim, Soo Jin Park
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Publication number: 20100021732Abstract: A filament type nano-sized lone fiber and a method of producing the same are disclosed. In the method, a spinning solution or a spinning melt is electro-spun in drops using a spinneret to which a critical voltage is applied, and the spun drops are continuously collected on a multi-collector. The spinning solution is produced dissolving a blend or copolymer consisting of two or more kinds of polymers in a solvent. The spinning melt is produced by melting the polymers. The multi-collector is selected from the group consisting of a plate type collector, a roll type collector, and a combination thereof. The filament type nano-sized long fiber is processed into a yarn through one step during the electrospinning process, and thus, mechanical properties are better than those of conventional nanofiber non-woven fabric. Consequently, the filament type nano-sized long fiber can be utilized for the extended application.Type: ApplicationFiled: September 4, 2009Publication date: January 28, 2010Applicant: KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGYInventors: Jae-Rock Lee, Seung-Yong Jee, Hyo-Jung Kim, Young-Taik Hong, Seok Kim, Soo-Jin Park
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Publication number: 20090117380Abstract: A filament type nano-sized long fiber and a method of producing the same. In the method, a spinning solution or a spinning melt is electro-spun in drops using a spinneret to which a critical voltage is applied, and the spun drops are continuously collected on a multi-collector. The spinning solution is produced by dissolving a blend or copolymer consisting of two or more kinds of polymers in a solvent. The spinning melt is produced by melting the polymers. The multi-collector is selected from the group consisting of a plate type collector, a roll type collector, and a combination thereof. The filament type nano-sized long fiber is processed into a yarn through one step during the electrospinning process, and thus, mechanical properties are better than those of a conventional nanofiber non-woven fabric. Consequently, the filament type nano-sized long fiber can be utilized for the extended application.Type: ApplicationFiled: May 15, 2006Publication date: May 7, 2009Applicant: Korea Research Institute of Chemical TechnologyInventors: Jae-Rock Lee, Seung-Yong Jee, Hyo-Joong Kim, Young-Taik Hong, Seok Kim, Soo-Jin Park
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Publication number: 20090023010Abstract: A method of surface modifying a polyimide film, a method of manufacturing a flexible copper clad laminate using the same, and a flexible copper clad laminate (FCCL) having a two-layer structure manufactured thereby. The method of surface modifying a polyimide film is conducted by modifying the surface of a polyimide film through a first plasma treatment, dipping the polyimide film into a solution containing an ethyleneimine-based silane coupling agent prepared by mixing the compound of Formula 1 and the compound of Formula 2 at a molar ratio of with 0.25˜1, and then modifying the surface of the polyimide film through a second plasma treatment. The method of surface modifying a polyimide film is advantageous because it may be substituted for a conventional surface treatment processes using ion beams.Type: ApplicationFiled: May 18, 2006Publication date: January 22, 2009Applicant: Korea Research Institute of Chemical TechnologyInventors: Young-Taik Hong, Hyung Dae Kang, Seog Je Kim, Jae Heung Lee
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Publication number: 20080241538Abstract: A filament type nano-sized long fiber and a method of producing the same are disclosed. In the method, a spinning solution or a spinning melt is electro-spun in drops using a spinneret to which a critical voltage is applied, and the spun drops are continuously collected on a multi-collector. The spinning solution is produced by dissolving a blend or copolymer consisting of two or more kinds of polymers in a solvent. The spinning melt is produced by melting the polymers. The multi-collector is selected from the group consisting of a plate type collector, a roll type collector, and a combination thereof. The filament type nano-sized long fiber is processed into a yarn through one step during the electrospinning process, and thus, mechanical properties are better than those of a conventional nanofiber non-woven fabric. Consequently, the filament type nano-sized long fiber can be utilized for the extended application.Type: ApplicationFiled: September 17, 2004Publication date: October 2, 2008Applicant: KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGYInventors: Jae-Rock Lee, Seung-Yong Jee, Hyo-Jung Kim, Young-Taik Hong, Seok Kim, Soo-Jin Park
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Patent number: 6433184Abstract: The present invention relates to polyamide-imides having head-to-tail backbone and more particularly, to polyamide-imimdes having head-to-tail ragularity to provide excellent heat and chemical resistance, physical and mechanical properties, processability, and gas permeability and selectivity.Type: GrantFiled: June 28, 2000Date of Patent: August 13, 2002Assignee: Korea Research Institute of Chemical TechnologyInventors: Kil-Yeong Choi, Jae Heung Lee, Young-Taik Hong, Moon Young Jin, Kyoung-Su Choi, Ho-Jin Park
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Patent number: 6018055Abstract: A polyarylether of the formula (VIII) ##STR1## wherein wherein Z' is 1-3 optionally substituted rings selected from the group consisting of an aromatic ring, a hetero aromatic ring or an aliphatic ring.A is --R.sub.1 --Z--Y in which R.sub.1 is H, C.sub.1 -C.sub.30 -alkyl or -aralkyl or phenyl, Z is a direct bond or CH.sub.2, S, O or NH, Y is CH.sub.3, OR.sub.3, SR.sub.3, NHR.sub.3, N(R.sub.3).sub.2, COOR.sub.3, COOM, SO.sub.3 R.sub.3 or SO.sub.3 M in which R.sub.3 is C.sub.1 -C.sub.30 alkyl and M is alkali metal,produced from 3,6-dihalogen- or -dintro-1,2,4,5-diimide having an N,N-substituent and which is suitable for use as a monomer for high temperature structural and functional polymers, and a process for producing the same are disclosed.Type: GrantFiled: July 15, 1997Date of Patent: January 25, 2000Assignee: Korea Research Institute of Chemical TechnologyInventors: Kil-Yeong Choi, Dong-Hack Suh, Young-Taik Hong, Eun-Young Chung
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Patent number: 5955568Abstract: The disclosure describes a process for preparing a polyamideimide resin having high molecular weight in a simple manner wherein major problems of the prior processes such as low heat resistance and low melt flowability are improved. The process comprises condensation of an aromatic tricarboxylic acid anhydride and an aromatic diamine in a polar solvent, subjecting the resulting diimidedicarboxylic acid to acyl halogenating agent treatment to give an intermediate having good reactivity at low temperature, and then subjecting the latter to direct polymerization by using diamine as a nucleophilic agent to give a polyamideimide resin having high molecular weight. The polyamideimide resin prepared by the present invention can be used as major heat resistant structural material in advanced industries and as paint, sheet, adhesives, sliding material, fiber and film having heat resistance.Type: GrantFiled: October 23, 1997Date of Patent: September 21, 1999Assignee: Korea Research Institute of Chemical TechnologyInventors: Kil-Yeong Choi, Dong-Hack Suh, Mi-Hie Yi, Young-Taik Hong, Moon-Young Jin
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Patent number: 5919942Abstract: The disclosure describes a cyclohexane-1,2,4,5-diimide derivative which can be used for the production of colorless transparent polymer and novel engineering plastics having good processability and solubility with an excellent physical property, and a process for preparing the same which comprises reacting a bicyclooctene-1,2,4,5-tetracarboxylic anhydride with alkylamine and aniline derivative and then oxidizing the resulting product with ozone, potassium permanganate, ruthenium chloride hydroxide and aqeous hydrogen peroxide under non-basic condition to convert double bond to dicarboxylic acid or dialdehyde without destroying the imide group.Type: GrantFiled: June 20, 1997Date of Patent: July 6, 1999Assignee: Korea Research Institute of Chemical TechnologyInventors: Kil-Yeong Choi, Dong-Hack Suh, Young-Taik Hong, Sang-Hyun Park
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Patent number: 5824766Abstract: A polyamideamic acid resin prepolymer represented by formula A having isophorone diamine as one of monomers, ##STR1## in which k, l, m and n are integer of 1 or more, respectively, and ##EQU1## --R-- is at least one group selected from the group consisting of ##STR2## --R'-- is a cis- and trans-conformational mixture of ##STR3## high heat resistant polyamideimide foam produced therefrom, and processes for producing them are disclosed.Type: GrantFiled: January 16, 1996Date of Patent: October 20, 1998Assignee: Korea Research Institute of Chemical TechnologyInventors: Kil-Yeong Choi, Mi-Hie Yi, Moon-Young Jin, Young-Taik Hong
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Patent number: 5532334Abstract: A process for preparing polyamideimide resins having high molecular weights as described wherein major problems of prior art processes such as low heat resistance and low melt flowability are improved. Polyamideimide resins having an intrinsic viscosity of 0.4 to 1.50 dl/g as measured on a solution of dimethylacetamide as a solvent at a concentration of 0.5 g/dl at 30.degree. C., are prepared by reacting an aromatic tricarboxylic acid anhydride with an aromatic diamine in N-methyl pyrrolidone solvent in the presence of a first catalyst selected from a group consisting of thionyl chloride, p-toluenesulphonly chloride, sulfuryl chloride, cyanuric chloride and phosphorus trichloride at a temperature of 50.degree. C. to 130.degree. C. over a period of 1 to 5 hours and further reacting the resultant reaction mixture in the presence of a second catalyst which is a compound of the formula (RO).sub.Type: GrantFiled: November 14, 1994Date of Patent: July 2, 1996Assignee: Korea Research Institute of Chemical TechnologyInventors: Kil-Yeong Choi, Dong-Hack Suh, Mi-Hie Yi, Young-Taik Hong, Jong-Chan Won
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Patent number: 5521276Abstract: Polyamideimide resins having the formula (I) ##STR1## in which repeating units are bound in a head to tail or head to head manner,R is at least two divalent groups selected from the group consisting of ##STR2## (cis-, trans- conformational mixture) wherein one divalent group is ##STR3## group in a PAI molecule, produced by introducing isophorone diamine into the conventional aromatic polyamideimide resins.Type: GrantFiled: June 22, 1994Date of Patent: May 28, 1996Assignee: Korea Research Institute of Chemical TechnologyInventors: Kil-Yeong Choi, Mi-Hie Yi, Jae-Heung Lee, Moon-Young Jin, Young-Taik Hong