Patents by Inventor Tae-bin Ahn
Tae-bin Ahn 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: 11712678Abstract: The present invention relates to a method for preparing superabsorbent polymer. The method for preparing superabsorbent polymer according to the present invention enables providing superabsorbent polymer having excellent absorption ratio, absorption speed and permeability.Type: GrantFiled: December 26, 2017Date of Patent: August 1, 2023Inventors: Dong Hyun Kim, Tae Bin Ahn, Jun Wye Lee, Chang Sun Han
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Patent number: 11633720Abstract: The super absorbent polymer comprises: a base polymer powder including a first crosslinked polymer of a water-soluble ethylenically unsaturated monomer having at least partially neutralized acidic groups; and a surface crosslinked layer formed on the base polymer powder and including a second crosslinked polymer in which the first crosslinked polymer is further crosslinked via a surface crosslinking agent, wherein the super absorbent polymer has: a fixed height absorption (FHA) of 22.5 g/g to 29 g/g, a saline flow conductivity (SFC) of 35 (·10?7 cm3·s/g) or more, and T-20 of 180 seconds or less.Type: GrantFiled: March 15, 2021Date of Patent: April 25, 2023Inventors: Tae Bin Ahn, Dong Hyun Kim, Yeon Soo Kim, Hyun Sup Lee, Chang Sun Han, Myung Han Lee
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Publication number: 20210197173Abstract: The super absorbent polymer comprises: a base polymer powder including a first crosslinked polymer of a water-soluble ethylenically unsaturated monomer having at least partially neutralized acidic groups; and a surface crosslinked layer formed on the base polymer powder and including a second crosslinked polymer in which the first crosslinked polymer is further crosslinked via a surface crosslinking agent, wherein the super absorbent polymer has: a fixed height absorption (FHA) of 22.5 g/g to 29 g/g, a saline flow conductivity (SFC) of 35 (·10?7 cm3·s/g) or more, and T-20 of 180 seconds or less.Type: ApplicationFiled: March 15, 2021Publication date: July 1, 2021Applicant: LG Chem, Ltd.Inventors: Tae Bin Ahn, Dong Hyun Kim, Yeon Soo Kim, Hyun Sup Lee, Chang Sun Han, Myung Han Lee
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Patent number: 11000829Abstract: The super absorbent polymer comprises: a base polymer powder including a first crosslinked polymer of a water-soluble ethylenically unsaturated monomer having at least partially neutralized acidic groups; and a surface crosslinked layer formed on the base polymer powder and including a second crosslinked polymer in which the first crosslinked polymer is further crosslinked via a surface crosslinking agent, wherein the super absorbent polymer has: a fixed height absorption (FHA) of 22.5 g/g to 29 g/g, a saline flow conductivity (SFC) of 35 (·10?7 cm3·s/g) or more, and T-20 of 180 seconds or less.Type: GrantFiled: October 25, 2017Date of Patent: May 11, 2021Inventors: Tae Bin Ahn, Dong Hyun Kim, Yeon Soo Kim, Hyun Sup Lee, Chang Sun Han, Myung Han Lee
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Publication number: 20200164344Abstract: The present invention relates to a method for preparing superabsorbent polymer. The method for preparing superabsorbent polymer according to the present invention enables providing superabsorbent polymer having excellent absorption ratio, absorption speed and permeability.Type: ApplicationFiled: December 26, 2017Publication date: May 28, 2020Applicants: LG Chem, Ltd., LG Chem, Ltd.Inventors: Dong Hyun Kim, Tae Bin Ahn, Jun Wye Lee, Chang Sun Han
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Publication number: 20200009530Abstract: The super absorbent polymer comprises: a base polymer powder including a first crosslinked polymer of a water-soluble ethylenically unsaturated monomer having at least partially neutralized acidic groups; and a surface crosslinked layer formed on the base polymer powder and including a second crosslinked polymer in which the first crosslinked polymer is further crosslinked via a surface crosslinking agent, wherein the super absorbent polymer has: a fixed height absorption (FHA) of 22.5 g/g to 29 g/g, a saline flow conductivity (SFC) of 35(·10?7 cm3·s/g) or more, and T-20 of 180 seconds or less.Type: ApplicationFiled: October 25, 2017Publication date: January 9, 2020Applicant: LG Chem, Ltd.Inventors: Tae Bin Ahn, Dong Hyun Kim, Yeon Soo Kim, Hyun Sup Lee, Chang Sun Han, Myung Han Lee
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Patent number: 10335768Abstract: The present invention relates to a super absorbent polymer which is excellent in various physical properties required for a super absorbent polymer, while exhibiting excellent water absorption capacity, absorption rate and liquid permeability, and a method for preparing the same.Type: GrantFiled: March 30, 2016Date of Patent: July 2, 2019Assignee: LG Chem, Ltd.Inventors: Tae Bin Ahn, Chang Sun Han, Seung Do Hong, Chul Hee Ryu, Dong Hyun Kim
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Publication number: 20180185819Abstract: The present invention relates to a super absorbent polymer which is excellent in various physical properties required for a super absorbent polymer, while exhibiting excellent water absorption capacity, absorption rate and liquid permeability, and a method for preparing the same.Type: ApplicationFiled: March 30, 2016Publication date: July 5, 2018Applicant: LG Chem, Ltd.Inventors: Tae Bin Ahn, Chang Sun Han, Seung Do Hong, Chul Hee Ryu, Dong Hyun Kim
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Patent number: 9976003Abstract: The present invention relates to a method for preparing a super absorbent polymer. The method for preparing a super absorbent polymer according to the present invention can provide a super absorbent resin exhibiting fast absorption rate and high saline flow conductivity while having excellent absorption properties such as a centrifuge retention capacity and an absorbency under pressure, by using the polycarboxylic acid-based copolymer under pulverization of the hydrous gel phase polymer.Type: GrantFiled: November 9, 2015Date of Patent: May 22, 2018Assignee: LG Chem, Ltd.Inventors: Yong Hun Lee, Tae Bin Ahn, Chang Sun Han, Sung Jong Seo
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Patent number: 9701796Abstract: Provided is a method of preparing a superabsorbent polymer. According to the method of preparing the superabsorbent polymer of the present invention, provided is a superabsorbent polymer having improved physical properties, in which the superabsorbent polymer has improved absorption rate and liquid permeability without reduction in centrifuge retention capacity or absorbency under load.Type: GrantFiled: December 5, 2014Date of Patent: July 11, 2017Assignee: LG Chem, Ltd.Inventors: Hwayoon Jung, Chang Sun Han, Chul Hee Ryu, Mi Young Kim, Tae Bin Ahn
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Patent number: 9700873Abstract: The present invention relates to a method for preparing a super absorbent polymer. The method for preparing a super absorbent polymer according to the present invention can provide a super absorbent resin having fast absorption rate and high absorption properties under pressure by using the polycarboxylic acid-based copolymer under pulverization of the hydrous gel phase polymer.Type: GrantFiled: October 19, 2015Date of Patent: July 11, 2017Assignee: LG Chem, Ltd.Inventors: Yong Hun Lee, Tae Bin Ahn, Chang Sun Han, Hwayoon Jung
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Publication number: 20170029576Abstract: The present invention relates to a method for preparing a super absorbent polymer. The method for preparing a super absorbent polymer according to the present invention can provide a super absorbent resin exhibiting fast absorption rate and high saline flow conductivity while having excellent absorption properties such as a centrifuge retention capacity and an absorbency under pressure, by using the polycarboxylic acid-based copolymer under pulverization of the hydrous gel phase polymer.Type: ApplicationFiled: November 9, 2015Publication date: February 2, 2017Applicant: LG Chem, Ltd.Inventors: Yong Hun Lee, Tae Bin Ahn, Chang Sun Han, Sung Jong Seo
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Publication number: 20160318002Abstract: The present invention relates to a method for preparing a super absorbent polymer. The method for preparing a super absorbent polymer according to the present invention can provide a super absorbent resin having fast absorption rate and high absorption properties under pressure by using the polycarboxylic acid-based copolymer under pulverization of the hydrous gel phase polymer.Type: ApplicationFiled: October 19, 2015Publication date: November 3, 2016Applicant: LG Chem, Ltd.Inventors: Yong Hun Lee, Tae Bin Ahn, Chang Sun Han, Hwayoon Jung
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Publication number: 20160311985Abstract: Provided is a method of preparing a superabsorbent polymer. According to the method of preparing the superabsorbent polymer of the present invention, provided is a superabsorbent polymer having improved physical properties, in which the superabsorbent polymer has improved absorption rate and liquid permeability without reduction in centrifuge retention capacity or absorbency under load.Type: ApplicationFiled: December 5, 2014Publication date: October 27, 2016Applicant: LG CHEM, LTD.Inventors: Hwayoon Jung, Chang Sun Han, Chul Hee Ryu, Mi Young Kim, Tae Bin Ahn
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Patent number: 8378024Abstract: The present invention relates to a low surface gloss styrene resin composition. The composition of the present invention is composed of (A) 80-99.9 weight % of the basic resin comprising rubber-modified styrene resin and (B) 0.1-20 weight % of syndiotactic polystyrene, the matting agent. The composition also includes (C) hydrogenated styrene block copolymer comprising styrene block and butadiene rubber block as a compatibilizer by 0.1-20 weight % for the total weight of the low surface gloss styrene resin composed of (A) the basic resin and (B) the matting agent and additionally includes (D) a plasticizer by 0.1-30 weight %. The composition of the present invention has excellent weatherability and impact-resistance in addition to the low surface gloss properties, so that it can be applied in various products, particularly exterior products for structures such as sidings and window frames, etc.Type: GrantFiled: January 30, 2008Date of Patent: February 19, 2013Assignee: LG Chem, Ltd.Inventors: Yun-kyoung Cho, Seon-mo Son, Bong-keun Lee, Tae-bin Ahn, Han-jong You, Sung-tae Ahn
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Patent number: 8129469Abstract: The present invention relates to a graft copolymer, a method for preparing the same and a thermoplastic resin composition comprising the same. The graft copolymer of the present invention comprises a composite rubber polymer (A-1) having an average particle diameter of 250-600 nm prepared by particle enlargement after mixing a diene rubber polymer (a-1) latex having an average particle diameter of 50-150 nm and a core-shell structured, cross-linked alkyl acrylate rubber polymer (b-1) latex having an average particle diameter of 50-250 nm. A thermoplastic resin composition prepared by mixing the graft copolymer of the present invention with a hard matrix (B) has very superior weathering resistance and superior pigmentation property, gloss, impact resistance and low-temperature impact strength.Type: GrantFiled: October 21, 2005Date of Patent: March 6, 2012Assignee: LG Chem, Ltd.Inventors: Hyun-taek O, Tae-bin Ahn, Jung-tae Park, Min-jung Kim, Keun-hoon Yoo
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Patent number: 7936510Abstract: The present invention provides an optical film that includes i) a (meth)acrylic resin, and 5 to 45 parts by weight of ii) a graft copolymer, prepared by grafting a (meth)acrylic resin onto a copolymer of (meth)acrylic rubber and aromatic vinyl compound, based on 100 parts by weight of the i) (meth)acrylic resin, and an electronic device including the optical film.Type: GrantFiled: October 1, 2008Date of Patent: May 3, 2011Assignee: LG Chem, Ltd.Inventors: Tae-Bin Ahn, Yong-Yeon Hwang, Min-Jung Kim, Jae-Hyun Jeong, Ki-Heon Song
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Publication number: 20100075165Abstract: The present invention relates to a low surface gloss styrene resin composition. The composition of the present invention is composed of (A) 80-99.9 weight % of the basic resin comprising rubber-modified styrene resin and (B) 0.1-20 weight % of syndiotactic polystyrene, the matting agent. The composition also includes (C) hydrogenated styrene block copolymer comprising styrene block and butadiene rubber block as a compatibilizer by 0.1-20 weight % for the total weight of the low surface gloss styrene resin composed of (A) the basic resin and (B) the matting agent and additionally includes (D) a plasticizer by 0.1-30 weight %. The composition of the present invention has excellent weatherability and impact-resistance in addition to the low surface gloss properties, so that it can be applied in various products, particularly exterior products for structures such as sidings and window frames, etc.Type: ApplicationFiled: January 30, 2008Publication date: March 25, 2010Applicant: LG CHEM, LTD.Inventors: Yun-kyoung Cho, Seon-mo Son, Bong-keun Lee, Tae-bin Ahn, Han-jong You, Sung-tae Ahn
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Publication number: 20090086319Abstract: The present invention provides an optical film that includes i) a (meth)acrylic resin, and 5 to 45 parts by weight of ii) a graft copolymer, prepared by grafting a (meth)acrylic resin onto a copolymer of (meth)acrylic rubber and aromatic vinyl compound, based on 100 parts by weight of the i) (meth)acrylic resin, and an electronic device including the optical film.Type: ApplicationFiled: October 1, 2008Publication date: April 2, 2009Applicant: LG Chem, Ltd.Inventors: Tae-Bin Ahn, Yong-Yeon Hwang, Min-Jung Kim, Jae-Hyun Jeong, Ki-Heon Song
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Patent number: 7417088Abstract: The present invention relates to a thermoplastic resin composition, more precisely, a thermoplastic resin composition with enhanced impact resistance, gloss, weather resistance and scratch resistance, compared with the conventional thermoplastic resin compositions, by containing an acrylate-styrene-acrylonitrile (ASA) graft copolymer, an aromatic vinyl compound and vinyl cyan compound copolymer, an alkyl methacrylate/aromatic vinyl compound/vinyl cyan compound terpolymer and a di-block copolymer (aromatic vinyl compound/vinyl cyan compound—alkyl methacrylate/aromatic vinyl compound/vinyl cyan compound).Type: GrantFiled: August 29, 2006Date of Patent: August 26, 2008Assignee: LG Chem, Ltd.Inventors: Tae-bin Ahn, Hyun-taek O, Jung-tae Park, Min-jung Kim, Keun-hoon Yoo