Patents by Inventor Byoung Cheon Jo
Byoung Cheon Jo 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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Publication number: 20240034036Abstract: The present disclosure relates to a recyclable polyethylene-based laminated packaging material with openability and a method of manufacturing the same including a multi-layered polyethylene film C in which a surface layer A and a sealant layer B are bonded to each other. The sealant layer B is a layer in which a polyolefin plastomer layer b1, a mixed resin layer b2 obtained by mixing a high-density polyethylene resin and a low-density polyethylene resin, and a composition layer b3 containing a resin composition obtained by mixing medium-density polyethylene and low-density polyethylene are sequentially laminated. Also disclosed is a method of manufacturing the same.Type: ApplicationFiled: July 18, 2023Publication date: February 1, 2024Inventors: Jae Myoung Son, Byoung Cheon Jo, Joo Hyun Nam, Eun Jung Baek
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Publication number: 20240009979Abstract: Provided is a polyethylene cling film. The polyethylene cling film has a 3-layer structure and also has a specific range of a difference between the melt index of an outer layer and/or an inner layer and the melt index of a middle layer, thereby showing excellent adhesiveness, resilience, usage sensation, and the like for use as a packaging film for food and/or non-food.Type: ApplicationFiled: June 6, 2023Publication date: January 11, 2024Inventors: Byoung Cheon Jo, Sung Won Lee, Hak Bin Kim, Dae Sig Hong, Jun Cheol Song
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Patent number: 11168163Abstract: An ethylene-(meth)acrylic acid copolymer has a polydispersity index (PDI) in a range from 3.5 to 8.0, and has a melt flow index (MFI) measured at 190° C. and 2.16 kg in a range from 350 g/10 min to 1800 g/10 min A water-dispersive composition includes the ethylene (meth)acrylic acid copolymer, a neutralizing agent and an aqueous medium.Type: GrantFiled: January 25, 2019Date of Patent: November 9, 2021Assignees: SK Innovation Co., Ltd., SK Global Chemical Co., Ltd., SKGC Americas Inc.Inventors: Yong Zheng, Doh Yeon Park, Mark Jasek, Suk Joon Kim, Hai Jin Shin, Ju Eun Jung, Byoung Cheon Jo, Christopher Balhoff, Du Youn Ka
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Publication number: 20200239611Abstract: An ethylene-(meth)acrylic acid copolymer has a polydispersity index (PDI) in a range from 3.5 to 8.0, and has a melt flow index (MFI) measured at 190° C. and 2.16 kg in a range from 350 g/10 min to 1800 g/10 min A water-dispersive composition includes the ethylene (meth)acrylic acid copolymer, a neutralizing agent and an aqueous medium.Type: ApplicationFiled: January 25, 2019Publication date: July 30, 2020Inventors: Yong Zheng, Doh Yeon Park, Mark Jasek, Suk Joon Kim, Hai Jin Shin, Ju Eun Jung, Byoung Cheon Jo, Christopher Balhoff, Du Youn Ka
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Patent number: 10130931Abstract: Disclosed are a granular super absorbent polymer, including particles (A) having an average diameter of 150 to 850 ?m, wherein the particles (A) includes particles (a1) having an average diameter of 500 to 850 ?m; and particles (a2) having an average diameter of 150 to 250 ?m, and the particles (a1 and a2) have a water-solubility index of 0.08 to 2.0 (represented by Equation 1), thereby it is possible to maintain a proper amount of extractables in a resin, and to exhibit excellent flow conductivity and water absorption ability in a case of being actually applied to products, without inducing any skin problem when, as well as a preparation method thereof.Type: GrantFiled: February 1, 2016Date of Patent: November 20, 2018Assignees: SK INNOVATION CO., LTD., SK GLOBAL CHEMICAL CO., LTD.Inventors: Byoung-Cheon Jo, Du-Youn Ka, Ju-Hee Kim, Byoung-Tak Yim
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Patent number: 9879122Abstract: A super-absorbent polymer satisfying Equation 1 exhibits remarkably improved shape rupture under pressure while maintaining excellent absorption ability. The super-absorbent polymer may be prepared by preparing a base resin by polymerizing a polymeric compound containing an acrylic monomer by using a polyfunctional nitroxide mediated radical polymerization initiator, substituting a terminal of the polymer prepared in the polymerization step with maleic anhydride, cross-linking each maleic anhydride terminal of different polymers prepared in the substitution step by using alkylenediamine having 2 to 8 carbon atoms, drying and grinding the base resin, and surface cross-linking the ground base resin.Type: GrantFiled: February 1, 2016Date of Patent: January 30, 2018Assignees: SK INNOVATION CO., LTD., SK GLOBAL CHEMICAL CO., LTD.Inventors: Ju-Hee Kim, Du-Youn Ka, Byoung-Tak Yim, Byoung-Cheon Jo
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Patent number: 9669384Abstract: Disclosed are a water-absorbing resin and a method of preparing the same, wherein absorbency under unload of the water-absorbing resin is 25 g/g or more, the absorbency under load is 20 g/g or more, and an increase in extractables at a high temperature represented by Equation 1 ranges from 1 or more but less than 3, thereby it is possible to solve a problem that gel-blocking of the water-absorbing resin is accelerated at a high temperature, and improve absorption rate and dry efficiency of the water-absorbing resin.Type: GrantFiled: February 1, 2016Date of Patent: June 6, 2017Assignees: SK GLOBAL CHEMICAL CO., LTD., SK INNOVATION CO., LTD.Inventors: Ju-Hee Kim, Du-Youn Ka, Byoung-Tak Yim, Byoung-Cheon Jo
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Patent number: 9623640Abstract: Provided are a multilayer separator capable of improving interlayer peel strength and exhibiting excellent permeability due to a high degree of alignment, and a method of manufacturing the same. The method of manufacturing a multilayer separator includes: manufacturing a precursor film by co-extruding and molding a polypropylene based resin melt having a melt index (2.16 kg, 230° C.) of 0.3 to 5 g/10 min and a polyethylene based resin melt having a melt index (2.16 kg, 190° C.) of 0.1 to 1.5 g/10 min so as to be alternately laminated; and heat-treating and stretching the manufactured film, wherein a melt index ratio (A/B) of the polypropylene based resin melt (A) and polyethylene based resin melt (B) is 2 to 10.Type: GrantFiled: December 23, 2014Date of Patent: April 18, 2017Assignee: SK Innovation Co., Ltd.Inventors: Min Ho Jeon, Byoung Cheon Jo, Sang Bae Cheong, Sang Hyun Park, Tae Gyu Kan
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Publication number: 20160220983Abstract: Disclosed are a granular super absorbent polymer, including particles (A) having an average diameter of 150 to 850 ?m, wherein the particles (A) includes particles (a1) having an average diameter of 500 to 850 ?m; and particles (a2) having an average diameter of 150 to 250 ?m, and the particles (a1 and a2) have a water-solubility index of 0.08 to 2.0 (represented by Equation 1), thereby it is possible to maintain a proper amount of extractables in a resin, and to exhibit excellent flow conductivity and water absorption ability in a case of being actually applied to products, without inducing any skin problem when, as well as a preparation method thereof.Type: ApplicationFiled: February 1, 2016Publication date: August 4, 2016Inventors: Byoung-Cheon JO, Du-Youn KA, Ju-Hee KIM, Byoung-Tak YIM
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Publication number: 20160220980Abstract: Disclosed are a water-absorbing resin and a method of preparing the same, wherein absorbency under unload of the water-absorbing resin is 25 g/g or more, the absorbency under load is 20 g/g or more, and an increase in extractables at a high temperature represented by Equation 1 ranges from 1 or more but less than 3, thereby it is possible to solve a problem that gel-blocking of the water-absorbing resin is accelerated at a high temperature, and improve absorption rate and dry efficiency of the water-absorbing resin.Type: ApplicationFiled: February 1, 2016Publication date: August 4, 2016Inventors: Ju-Hee KIM, Du-Youn KA, Byoung-Tak YIM, Byoung-Cheon JO
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Publication number: 20160220981Abstract: A water-absorbing resin and a method of preparing the same, and more specifically, to a method of preparing the water-absorbing resin includes crosslinking and polymerization of an unsaturated monomer including an acrylic acid monomer in the presence of a first internal crosslinking agent and a second internal crosslinking agent having a lower reactivity than the first internal crosslinking agent, thereby preparing a water-absorbing resin having significantly improved absorbency due to a uniform crosslinking structure and a suitable degree of crosslinking.Type: ApplicationFiled: February 1, 2016Publication date: August 4, 2016Inventors: Byoung-Tak YIM, Du-Youn KA, Byoung-Cheon JO
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Publication number: 20160222175Abstract: A super-absorbent polymer satisfying Equation 1 exhibits remarkably improved shape rupture under pressure while maintaining excellent absorption ability. The super-absorbent polymer may be prepared by preparing a base resin by polymerizing a polymeric compound containing an acrylic monomer by using a polyfunctional nitroxide mediated radical polymerization initiator, substituting a terminal of the polymer prepared in the polymerization step with maleic anhydride, cross-linking each maleic anhydride terminal of different polymers prepared in the substitution step by using alkylenediamine having 2 to 8 carbon atoms, drying and grinding the base resin, and surface cross-linking the ground base resin.Type: ApplicationFiled: February 1, 2016Publication date: August 4, 2016Inventors: Ju-Hee KIM, Du-Youn KA, Byoung-Tak YIM, Byoung-Cheon JO
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Publication number: 20160220724Abstract: An absorbent polymer has an absorbency under pressure (AUL) ranging from 20 to 45 g/g; a phase angle (67 ) of swollen gel ranging from 3 to 30 degrees; and a decrease in phase angle ranging from 3 to 35%. Thereby, the absorbent polymer may have favorable gel elasticity under pressure after swelling, so as to reduce adhesion between swollen particles. Accordingly, even after absorbing the liquid to swell the absorbent polymer, the polymer may maintain excellent flow conductivity, thereby reducing a decrease in absorption ability of the absorbent polymer.Type: ApplicationFiled: February 1, 2016Publication date: August 4, 2016Inventors: Du-Youn KA, Ju-Hee KIM, Byoung-Tak YIM, Ju-Eun JUNG, Byoung-Cheon JO
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Publication number: 20160220723Abstract: Disclosed are an absorbent polymer and a method of preparing the same. The absorbent polymer may be mixed with a cross-linking additive in order to allow the polymerized hydrogel to have a uniform cross-linkage structure, and thereby enhancing flow conductivity while having excellent absorption ability.Type: ApplicationFiled: February 1, 2016Publication date: August 4, 2016Inventors: Du-Youn KA, Ju-Hee KIM, Byoung-Tak YIM, Ju-Eun JUNG, Byoung-Cheon JO
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Publication number: 20150183195Abstract: Provided are a multilayer separator capable of improving interlayer peel strength and exhibiting excellent permeability due to a high degree of alignment, and a method of manufacturing the same. The method of manufacturing a multilayer separator includes: manufacturing a precursor film by co-extruding and molding a polypropylene based resin melt having a melt index (2.16 kg, 230° C.) of 0.3 to 5 g/10 min and a polyethylene based resin melt having a melt index (2.16 kg, 190° C.) of 0.1 to 1.5 g/10 min so as to be alternately laminated; and heat-treating and stretching the manufactured film, wherein a melt index ratio (A/B) of the polypropylene based resin melt (A) and polyethylene based resin melt (B) is 2 to 10.Type: ApplicationFiled: December 23, 2014Publication date: July 2, 2015Inventors: Min Ho Jeon, Byoung Cheon Jo, Sang Bae Cheong, Sang Hyun Park, Tae Gyu Kan
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Patent number: 8323547Abstract: Disclosed in the present invention are a microporous polyethylene film and a method of manufacture thereof. The polyethylene microporous film manufactured according to the present invention may contribute to an increased productivity of stable products as its extrusion and stretching may be done readily. And thus manufactured product may be used for battery separators and various filters owing to its high gas permeability, superior puncture strength, and small ratio of shrinkage.Type: GrantFiled: May 24, 2007Date of Patent: December 4, 2012Assignee: SK Innovation Co., Ltd.Inventors: Young-Keun Lee, Jang-Weon Rhee, Jung-Moon Sung, Byoung-Cheon Jo, Chol-Ho Lee, Gwi-Gwon Kang, In-Hwa Jung, Je-An Lee
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Patent number: 8313678Abstract: The present invention discloses a microporous high-density polyethylene film for a battery separator, and process for preparing the same. The microporous high-density polyethylene film according to the present invention comprises of high-density polyethylene with weight average molecular weight of 2×105˜4×105, containing not more than 5 wt % of molecules with molecular weight of 1×104 or less and not more than 5 wt % of molecules with molecular weight of 1×106 or more, and has the properties of puncture strength of 0.22 N/?m or more, Darcy's permeability constant of 1.8×10?5 Darcy or more, and shrinkage of 4% or less in machine and transverse direction, respectively. Particularly, the microporous high-density polyethylene film has excellent extrusion-compoundability and stretchability with high productivity and enhances performances and stability of the battery using the film.Type: GrantFiled: May 24, 2007Date of Patent: November 20, 2012Assignee: SK Innovation Co., Ltd.Inventors: Young-Keun Lee, Jang-Weon Rhee, Jung-Moon Sung, Byoung-Cheon Jo
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Patent number: 8057718Abstract: Disclosed herein is a microporous polyethylene film for a battery separator and a method of producing the same. The microporous polyethylene film is made from a resin composition. The resin composition comprises 100 parts by weight of a polyethylene composition including 10-50 wt % polyethylene having a weight average molecular weight of from 2×105 to less than 5×105 (component I) and 90-50 wt % diluent (component II), and 0-150 parts by weight of inorganic powder (component III). The film has a puncture strength of 0.20 N/?m or more and a gas permeability (Darcy's permeability constant) of 1×10?5 Darcy or more. The microporous polyethylene film has excellent physical properties, thus improving the performance and stability of a battery.Type: GrantFiled: January 26, 2007Date of Patent: November 15, 2011Assignee: SK Innovation Co., Ltd.Inventors: Young Keun Lee, Jang Weon Rhee, Jung Moon Sung, Byoung Cheon Jo, Chol Ho Lee
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Patent number: 7947752Abstract: Disclosed is a microporous high density polyethylene film for a battery separator and a method of producing the same. The microporous high density polyethylene film includes high density polyethylene with a weight average molecular weight of 2×105-5×105, containing 5 wt % or less molecule with a molecular weight of 1×104 or less. The microporous high density polyethylene film has tensile strengths of 1,100 kg/cm2 or more in transverse and machine directions respectively, a puncture strength of 0.22 N/?m or more, a gas permeability (Darcy's permeability constant) of 1.3×10?5 Darcy or more, and shrinkages of 5% or less in machine and transverse directions, respectively. Particularly, the microporous high density polyethylene film has an excellent extrusion-compoundabiliy and stretchability and a high productivity, and can improve the performances and stability of a battery produced using the same.Type: GrantFiled: February 12, 2008Date of Patent: May 24, 2011Assignee: SK Energy Co., Ltd.Inventors: Young Keun Lee, Jang Weon Rhee, Won Young Cho, Jung Moon Sung, Byoung Cheon Jo, Chol Ho Lee, In Hwa Jung, Byung Rae Jung
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Publication number: 20090023825Abstract: Disclosed is a microporous polyethylene film for a battery separator and a method of producing the same. The microporous polyethylene film comprises a resin mixture, which includes 100 parts by weight of composition containing 20-50 wt % polyethylene with a weight average molecular weight of 5×104-3×105 (component I) and 80-50 wt % diluent (component II), 0.1-2 parts by weight of peroxide (component III), and 0.05-0.5 parts by weight of anti-oxidant (component IV). The microporous polyethylene film has a puncture strength of 0.22 N/?m or more and a gas permeability (Darcy's permeability constant) of 1.3×10?5 Darcy or more. The present invention increases production efficiency of the microporous film, and improves performances and stability of the battery when the microporous polyethylene film is used in a battery separator.Type: ApplicationFiled: September 12, 2008Publication date: January 22, 2009Inventors: Young Keun Lee, Jang Weon Rhee, Won Young Cho, Jung Moon Sung, Byoung Cheon Jo, Chol Ho Lee, In Hwa Jung, Byung Rae Jung