Patents by Inventor Sun-Keun Kim
Sun-Keun Kim 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: 11958874Abstract: According to the embodiment of the present disclosure, an organo tin compound is represented by the following Chemical Formula 1: In Chemical Formula 1, L1 and L2 are each independently selected from an alkoxy group having 1 to 10 carbon atoms and an alkylamino group having 1 to 10 carbon atoms, R1 is a substituted or unsubstituted aryl group having 6 to 8 carbon atoms, and R2 is selected from a substituted or unsubstituted linear alkyl group having 1 to 4 carbon atoms, a branched alkyl group having 3 to 4 carbon atoms, a cycloalkyl group having 3 to 6 carbon atoms, and an allyl group having 2 to 4 carbon atoms.Type: GrantFiled: April 11, 2022Date of Patent: April 16, 2024Assignees: EGTM Co., Ltd., SK hynix Inc.Inventors: Jang Keun Sim, Sung Jun Ji, Tae Young Lee, Shin Beom Kim, Sun Young Baik, Tae Hwan Lim, Dong Kyun Lee, Sang Hyun Lee, Su Pill Chun
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Patent number: 11427668Abstract: A modified conjugated diene-based polymer, and more particularly, a modified conjugated diene-based polymer having a unimodal molecular weight distribution curve measured by gel permeation chromatography (GPC), molecular weight distribution (PDI; MWD) of less than 1.7, and a Si content of 100 ppm or more based on weight, and including a repeating unit derived from an aromatic vinyl monomer in an amount from 15 wt % to less than 30 wt %, and a rubber composition including the same.Type: GrantFiled: December 8, 2017Date of Patent: August 30, 2022Inventors: Ro Mi Lee, No Ma Kim, Yu Jin Kim, Ho Young Lee, Sun Keun Kim, Su Min Na, Youk Reol Na, Heung Yeal Choi
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Patent number: 11339238Abstract: A modified conjugated diene-based polymer, and more particularly, a modified conjugated diene-based polymer having a unimodal molecular weight distribution curve measured by gel permeation chromatography (GPC), molecular weight distribution (PDI; MWD) of less than 1.7, and a Si content of 100 ppm or more based on weight, and a rubber composition including the same.Type: GrantFiled: December 8, 2017Date of Patent: May 24, 2022Inventors: Ho Young Lee, Ki Seok Son, Da Won Chai, No Ma Kim, Sun Keun Kim, Youk Reol Na, Hyoung Woo Lee, Heung Yeal Choi
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Patent number: 11254755Abstract: A modified conjugated diene-based polymer, and more particularly, a modified conjugated diene-based polymer having a unimodal molecular weight distribution curve measured by gel permeation chromatography (GPC), molecular weight distribution (PDI; MWD) of less than 1.7, and a Si content of 100 ppm or more based on weight, and including a repeating unit derived from an aromatic vinyl monomer in an amount of greater than 0 wt % and less than 15 wt %, and a rubber composition including the same.Type: GrantFiled: December 8, 2017Date of Patent: February 22, 2022Inventors: Min Sik Mun, Ro Mi Lee, No Ma Kim, Sun Keun Kim, Youk Reol Na, Heung Yeal Choi
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Publication number: 20210171689Abstract: The present invention provides a method for preparing a modified and conjugated diene-based polymer, which may prevent processability degradation by restraining the increase of mooney viscosity during post-treatment using steam with high temperature or storage for a long time by stabilizing a modified polymer using a modification stabilizer, and a modified and conjugated diene-based polymer prepared by the preparation method.Type: ApplicationFiled: February 17, 2021Publication date: June 10, 2021Applicant: LG Chem, Ltd.Inventors: Ho Young Lee, No Ma Kim, Sang Mi Lee, Sun Keun Kim
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Patent number: 11001661Abstract: A modified conjugated diene-based polymer, and more particularly, a modified conjugated diene-based polymer having a unimodal molecular weight distribution curve measured by gel permeation chromatography (GPC), molecular weight distribution (PDI; MWD) of less than 1.7, and a Si content of 100 ppm or more based on weight, and including a repeating unit derived from an aromatic vinyl monomer in an amount of 30 wt % or more, and a rubber composition including the same.Type: GrantFiled: December 8, 2017Date of Patent: May 11, 2021Inventors: Hae Sung Sohn, Tae Chul Lee, He Seung Lee, No Ma Kim, Sun Keun Kim, Youk Reol Na, Kyung Chang Seo, Heung Yeal Choi
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Patent number: 11001646Abstract: A modified conjugated diene-based polymer, and more particularly, a modified conjugated diene-based polymer having a unimodal molecular weight distribution curve measured by gel permeation chromatography (GPC), molecular weight distribution (PDI; MWD) of less than 1.7, and a Si content of 100 ppm or more based on weight, and including a repeating unit derived from an aromatic vinyl monomer in an amount of greater than 0 wt % and less than 15 wt %, and a rubber composition including the same.Type: GrantFiled: December 8, 2017Date of Patent: May 11, 2021Inventors: Min Sik Mun, Ro Mi Lee, No Ma Kim, Sun Keun Kim, Youk Reol Na, Heung Yeal Choi
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Patent number: 10968302Abstract: The present invention provides a method for preparing a modified and conjugated diene-based polymer, which may prevent processability degradation by restraining the increase of mooney viscosity during post-treatment using steam with high temperature or storage for a long time by stabilizing a modified polymer using a modification stabilizer, and a modified and conjugated diene-based polymer prepared by the preparation method.Type: GrantFiled: June 12, 2017Date of Patent: April 6, 2021Inventors: Ho Young Lee, No Ma Kim, Sang Mi Lee, Sun Keun Kim
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Publication number: 20200223968Abstract: A modified conjugated diene-based polymer, and more particularly, a modified conjugated diene-based polymer having a unimodal molecular weight distribution curve measured by gel permeation chromatography (GPC), molecular weight distribution (PDI; MWD) of less than 1.7, and a Si content of 100 ppm or more based on weight, and including a repeating unit derived from an aromatic vinyl monomer in an amount of 30 wt % or more, and a rubber composition including the same.Type: ApplicationFiled: December 8, 2017Publication date: July 16, 2020Applicant: LG Chem, Ltd.Inventors: Hae Sung Sohn, Tae Chul Lee, He Seung Lee, No Ma Kim, Sun Keun Kim, Youk Reol Na, Kyung Chang Seo, Heung Yeal Choi
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Publication number: 20200223969Abstract: A modified conjugated diene-based polymer, and more particularly, a modified conjugated diene-based polymer having a unimodal molecular weight distribution curve measured by gel permeation chromatography (GPC), molecular weight distribution (PDI; MWD) of less than 1.7, and a Si content of 100 ppm or more based on weight, and including a repeating unit derived from an aromatic vinyl monomer in an amount from 15 wt % to less than 30 wt %, and a rubber composition including the same.Type: ApplicationFiled: December 8, 2017Publication date: July 16, 2020Applicant: LG Chem, Ltd.Inventors: Ro Mi Lee, No Ma Kim, Yu Jin Kim, Ho Young Lee, Sun Keun Kim, Su Min Na, Youk Reol Na, Heung Yeal Choi
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Publication number: 20200002454Abstract: A modified conjugated diene-based polymer, and more particularly, a modified conjugated diene-based polymer having a unimodal molecular weight distribution curve measured by gel permeation chromatography (GPC), molecular weight distribution (PDI; MWD) of less than 1.7, and a Si content of 100 ppm or more based on weight, and a rubber composition including the same.Type: ApplicationFiled: December 8, 2017Publication date: January 2, 2020Applicant: LG Chem, Ltd.Inventors: Ho Young Lee, Ki Seok Son, Da Won Chai, No Ma Kim, Sun Keun Kim, Youk Reol Na, Hyoung Woo Lee, Heung Yeal Choi
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Publication number: 20190233547Abstract: A modified conjugated diene-based polymer, and more particularly, a modified conjugated diene-based polymer having a unimodal molecular weight distribution curve measured by gel permeation chromatography (GPC), molecular weight distribution (PDI; MWD) of less than 1.7, and a Si content of 100 ppm or more based on weight, and including a repeating unit derived from an aromatic vinyl monomer in an amount of greater than 0 wt % and less than 15 wt %, and a rubber composition including the same.Type: ApplicationFiled: December 8, 2017Publication date: August 1, 2019Applicant: LG Chem, Ltd.Inventors: Min Sik Mun, Ro Mi Lee, No Ma Kim, Sun Keun Kim, Youk Reol Na, Heung Yeal Choi
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Publication number: 20190048115Abstract: The present invention provides a method for preparing a modified and conjugated diene-based polymer, which may prevent processability degradation by restraining the increase of mooney viscosity during post-treatment using steam with high temperature or storage for a long time by stabilizing a modified polymer using a modification stabilizer, and a modified and conjugated diene-based polymer prepared by the preparation method.Type: ApplicationFiled: June 12, 2017Publication date: February 14, 2019Applicant: LG Chem, Ltd.Inventors: Ho Young LEE, No Ma KIM, Sang Mi LEE, Sun Keun KIM
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Patent number: 9650460Abstract: The present invention relates to a long-chain branched elastic terpolymer capable of satisfying excellent processability and elasticity (flexibility) at the same time, which is obtained in the presence of a Group IV transition metal catalyst, and a preparation method thereof. The elastic terpolymer is a copolymer of ethylene, an alpha-olefin having 3 to 20 carbon atoms, and a diene, wherein i) its weight average molecular weight measured by GPC is 100,000 to 500,000, and ii) x which is the ethylene content (% by weight) and y which is the density value (g/cm3) of the copolymer measured when the ethylene content is X satisfy a relationship of 0.0000175214x(x?75.65420571)+0.875?y?0.0000175214x(x?75.65420571)+0.881.Type: GrantFiled: June 30, 2014Date of Patent: May 16, 2017Assignee: LG Chem, Ltd.Inventors: Sung Ho Park, Sung Cheol Yoon, Sun Keun Kim, Jun Seok Ko, Sang Eun Park, Soo Young Choi
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Patent number: 9493593Abstract: The present invention relates to a long-chain branched elastic terpolymer capable of satisfying excellent processability and elasticity (flexibility) at the same time, which is obtained in the presence of a Group IV transition metal catalyst, and a preparation method thereof. The elastic terpolymer is a copolymer of ethylene, an alpha-olefin having 3 to 20 carbon atoms, and a diene, wherein i) its weight average molecular weight measured by GPC is 100,000 to 500,000, and ii) its LCB Index which is a ratio of 1st harmonics of storage modulus to 5th harmonics of storage modulus measured at 125° C. using a rubber process analyzer according to a LAOS (Large Angles of Oscillation and high Strains) method has a positive value.Type: GrantFiled: June 30, 2014Date of Patent: November 15, 2016Assignee: LG Chem, Ltd.Inventors: Sun Keun Kim, Sung Ho Park, Sung Cheol Yoon, Jun Seok Ko, Soo Young Choi
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Publication number: 20160289359Abstract: The present invention relates to a long-chain branched elastic terpolymer capable of satisfying excellent processability and elasticity (flexibility) at the same time, which is obtained in the presence of a Group IV transition metal catalyst, and a preparation method thereof. The elastic terpolymer is a copolymer of ethylene, an alpha-olefin having 3 to 20 carbon atoms, and a diene, wherein i) its weight average molecular weight measured by GPC is 100,000 to 500,000, and ii) x which is the ethylene content (% by weight) and y which is the density value (g/cm3) of the copolymer measured when the ethylene content is X satisfy a relationship of 0.0000175214x(x?75.65420571)+0.875?y?0.0000175214x(x?75.65420571)+0.881.Type: ApplicationFiled: June 30, 2014Publication date: October 6, 2016Inventors: Sung Ho PARK, Sung Cheol YOON, Sun Keun KIM, Jun Seok KO, Sang Eun PARK, Soo Young CHOI
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Publication number: 20160280823Abstract: The present invention relates to a long-chain branched elastic terpolymer capable of satisfying excellent processability and elasticity (flexibility) at the same time, which is obtained in the presence of a Group IV transition metal catalyst, and a preparation method thereof. The elastic terpolymer is a copolymer of ethylene, an alpha-olefin having 3 to 20 carbon atoms, and a diene, wherein i) its weight average molecular weight measured by GPC is 100,000 to 500,000, and ii) its LCB Index which is a ratio of 1st harmonics of storage modulus to 5th harmonics of storage modulus measured at 125° C. using a rubber process analyzer according to a LAOS (Large Angles of Oscillation and high Strains) method has a positive value.Type: ApplicationFiled: June 30, 2014Publication date: September 29, 2016Applicant: LG Chem, Ltd.Inventors: Sun Keun KIM, Sung Ho PARK, Sung Cheol YOON, Jun Seok KO, Soo Young CHOI
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Patent number: 9428600Abstract: The present invention relates to a long-chain branched elastic terpolymer capable of satisfying excellent processability and elasticity (flexibility) at the same time, which is obtained in the presence of a Group IV transition metal catalyst, and a preparation method thereof. The elastic terpolymer is a copolymer of ethylene, an alpha-olefin having 3 to 20 carbon atoms, and a diene, wherein (i) its weight average molecular weight measured by GPC is 100,000 to 500,000, and (ii) x which is an ethylene content (% by weight) and y which is a crystallization temperature (K) of the copolymer measured when the ethylene content is X satisfy a relationship of 2.628x+100?y?2.628x+112.Type: GrantFiled: June 30, 2014Date of Patent: August 30, 2016Assignee: LG CHEM, LTD.Inventors: Sung Ho Park, Sung Cheol Yoon, Sun Keun Kim, Jun Seok Ko, Sang Eun Park, Soo Young Choi
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Publication number: 20160137764Abstract: The present invention relates to a long-chain branched elastic terpolymer capable of satisfying excellent processability and elasticity (flexibility) at the same time, which is obtained in the presence of a Group IV transition metal catalyst, and a preparation method thereof. The elastic terpolymer is a copolymer of ethylene, an alpha-olefin having 3 to 20 carbon atoms, and a diene, wherein (i) its weight average molecular weight measured by GPC is 100,000 to 500,000, and (ii) x which is an ethylene content (% by weight) and y which is a crystallization temperature (K) of the copolymer measured when the ethylene content is X satisfy a relationship of 2.628x+100?y?2.628x+112.Type: ApplicationFiled: June 30, 2014Publication date: May 19, 2016Inventors: Sung Ho PARK, Sung Cheol YOON, Sun Keun KIM, Jun Seok KO, Sang Eun PARK, Soo Young CHOI
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Publication number: 20090036587Abstract: Disclosed is a polypropylene resin composition with flame retardance and abrasion resistance. The polypropylene resin composition according to the present invention includes 20 to 200 parts by weight of an inorganic flame retardant; and 0.1 to 10 parts by weight of at least one additive, based on 100 parts by weight of a base resin comprising 30 to 90% by weight of polypropylene copolymer resin and 10 to 70% by weight of polyolefin alpha copolymer resin. The polypropylene resin composition according to the present invention can be used for industrial cables with potent endurance since it includes an inorganic flame retardant to show flame retardance and it can remove or reduce a whitening phenomenon and show a significantly improved abrasion resistance without deteriorating moldability or mechanical property even when the contents of the composition are varied to enhance abrasion resistance.Type: ApplicationFiled: February 16, 2007Publication date: February 5, 2009Applicant: LS CABLE LTD.Inventors: Do-Hoon Chang, June-Sun Kim, In-Hwoi Lee, Gun-Ju Lee, In-Ha Kim, Sun-Keun Kim