Patents by Inventor Il Nam Jung
Il Nam Jung 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: 11685702Abstract: Provided is a method for producing (alkyl)arene compounds represented by Formulae 3-1, 3-2, and 3-3 by the Friedel-Crafts alkylation reaction of alkyl halide compounds and arene compounds using organic phosphine compounds as a catalyst.Type: GrantFiled: December 7, 2020Date of Patent: June 27, 2023Assignee: JSI SILICONE CO.Inventors: Il Nam Jung, A Ra Cho, Seung Hwan Kang, Young Min Kim
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Publication number: 20210188739Abstract: Provided is a method for producing (alkyl)arene compounds represented by Formulae 3-1, 3-2, and 3-3 by the Friedel-Crafts alkylation reaction of alkyl halide compounds and arene compounds using organic phosphine compounds as a catalyst.Type: ApplicationFiled: December 7, 2020Publication date: June 24, 2021Inventors: Il Nam JUNG, A Ra CHO, Seung Hwan KANG, Young Min KIM
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Patent number: 8450515Abstract: The present invention relates to a preparation method for a linear or cyclic trisilaalkane which is a substance useful in the preparation of polycarbosilane and silicon carbide precursors. Linear or cyclic trisilaalkane and organic trichlorosilane derivatives can be synthesized simultaneously and in high yield by reacting bis(chlorosily)methane having a Si—H bond, either alone or together with an organic chloride, using a quaternary organic phosphonium salt compound as a catalyst. Further, since the catalyst can be recovered after use, the present invention is very economical and is thus effective for mass-producing precursors for organic/inorganic hybrid substances.Type: GrantFiled: May 22, 2009Date of Patent: May 28, 2013Assignee: Samsung Fine Chemicals Co., LtdInventor: Il Nam Jung
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Patent number: 8415494Abstract: The present invention relates to novel 1,4-disilacyclohexane derivatives and a preparation method thereof. More particularly, the present invention provides a method for preparing 1,4-disilacyclohexane derivatives with a hexagonal ring structure at high yield through double silylation of an organosilane compound and a vinyl silane compound having an unsaturated double bond using quarternary organophosphonium salts as a catalyst. According to the present invention, tris(silyl)ethanes having three silyl groups in one molecule can be prepared at the same time and the catalyst can be recovered after reaction. Thus, the method is economical and enables mass-production of 1,4-disilacydohexane derivatives and tris(silyl)ethanes which are precursors of organic/inorganic hybrid materials.Type: GrantFiled: April 21, 2009Date of Patent: April 9, 2013Assignee: Samsung Fine Chemical Co., Ltd.Inventor: Il Nam Jung
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Publication number: 20120114544Abstract: Provided is an organic chlorohydrosilane, a useful starting material for preparing silicon polymers and a method for preparing the same. More particularly, the present invention enables the synthesis of various novel organic chlorohydrosilanes in high yield by an exchange reaction between an Si—H bond of a chlorosilane which can be obtained in an inexpensive and easy manner and an Si—Cl bond of an another organic chlorosilane using a quaternary organic phosphonium salt compound as a catalyst. Since the catalyst can be recovered after its use and reused, the present invention is very economical and thus effective for mass-producing silicon raw materials.Type: ApplicationFiled: July 13, 2010Publication date: May 10, 2012Applicant: SAMSUNG FINE CHEMICALS CO., LTDInventors: Il Nam Jung, Soon Hyun Hong, Eun Seong Kim, Sang Il Hyun
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Publication number: 20110105777Abstract: The present invention relates to novel 1,4-disilacyclohexane derivatives and a preparation method thereof. More particularly, the invention provides a method for preparing 1,4-disilacyclohexane derivatives with a hexagonal ring structure at high yield through double silylation of an organosilane compound and a vinyl silane compound having an unsaturated double bond using quaternary organophosphonium salts as a catalyst. According to the present invention, tris(silyl)ethanes having three silyl groups in one molecule can be prepared at the same time and the catalyst can be recovered after reaction. Thus, the method is economical and enables mass-production of 1,4-disilacyclohexane derivatives and tris(silyl)ethanes which are precursors of organic-inorganic hybrid materials.Type: ApplicationFiled: April 21, 2009Publication date: May 5, 2011Applicant: SAMSUNG FINE CHEMICALS CO., LTDInventor: Il Nam Jung
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Publication number: 20110077420Abstract: The present invention relates to a preparation method for a linear or cyclic trisilaalkane which is a substance useful in the preparation of polycarbosilane and silicon carbide precursors. Linear or cyclic trisilaalkane and organic trichlorosilane derivatives can be synthesized simultaneously and in high yield by reacting bis(chlorosily)methane having a Si—H bond, either alone or together with an organic chloride, using a quaternary organic phosphonium salt compound as a catalyst. Further, since the catalyst can be recovered after use, the present invention is very economical and is thus effective for mass-producing precursors for organic/inorganic hybrid substances.Type: ApplicationFiled: May 22, 2009Publication date: March 31, 2011Applicant: SAMSUNG FINE CHEMICALS CO., LTD.Inventor: Il Nam Jung
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Patent number: 6911552Abstract: A method for preparing alkyldichlorosilanes having a Si—H bond by directly reacting metallic silicon with a mixture of alkyl chloride and (i) hydrogen chloride, or (ii) an alkyl chloride which can generate hydrogen chloride at a reaction temperature in the presence of copper catalyst.Type: GrantFiled: December 31, 2002Date of Patent: June 28, 2005Assignee: Korea Institute of Science and TechnologyInventors: Il Nam Jung, Bok Ryul Yoo, Joon Soo Han, Weon Cheol Lim, Mu Yeol Kim
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Patent number: 6740766Abstract: The present invention relates to a process for preparing organosilicon compounds by the silylation of conjugated dienes and more particularly, to the process for preparing organosilicon compounds expressed by the following Formulas 1a and 1b in high yield, comprising the steps of heating trichlorosilane in the presence of quaternary organophosphonium salt catalystto generate dichlorosilylene (:SiCl2); and silylating the result with linear or cyclic conjugated dienes, wherein R1, R2, R3, R4, R5 and R6 are independently a hydrogen atom, a C1-C6 alkyl, phenyl group, or two functional groups among R1, R2, R3, R4, R5 and R6 may be covalently bonded to each other to form a cyclic compound of C4-C8.Type: GrantFiled: March 11, 2003Date of Patent: May 25, 2004Assignee: Korea Institute of Science and TechnologyInventors: Il Nam Jung, Bok Ryul Yoo, Joon Soo Han, Seung-Hyun Kang
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Publication number: 20040082803Abstract: The present invention provides organosilicon compounds containing two trichlorosilyl groups and their preparation methods. Organosilicon compounds of formula II are prepared by reacting linear chain or cyclic olefins of formula I with trichlorosilane in the presence of quaternary organophosphonium salt as a catalyst.Type: ApplicationFiled: March 28, 2003Publication date: April 29, 2004Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGYInventors: Il Nam Jung, Bok Ryul Yoo, Joon Soo Han, Seung-Hyun Kang
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Publication number: 20030166958Abstract: A method for preparing alkyldichlorosilanes having a Si—H bond by directly reacting metallic silicon with a mixture of alkyl chloride and hydrogen chloride or alkyl chloride which generates hydrogen chloride at a reaction temperature in the presence of copper catalyst.Type: ApplicationFiled: December 31, 2002Publication date: September 4, 2003Applicant: Korea Institute of Science and TechnologyInventors: Il Nam Jung, Bok Ryul Yoo, Joon Soo Han, Weon Cheol Lim, Mu Yeol Kim
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Publication number: 20020082438Abstract: The present invention relates to a process for preparing organochlorosilanes and more particularly, to the process for preparing organochlorosilanes of formula I by a dehydrohalogenative coupling of hydrochlorosilanes of formula II with organic halides of formula III in the presence of quaternary phosphonium salt as a catalyst to provide better economical matter and yield compared with conventional methods, because only catalytic amount of phosphonium chloride is required and the catalyst can be separated from the reaction mixture and recycled easily, 1Type: ApplicationFiled: August 1, 2001Publication date: June 27, 2002Inventors: Il-Nam Jung, Bok-Ryul Yoo, Joon-Soo Han, Seung-Hyun Kang
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Patent number: 6392077Abstract: The present invention relates to a process for preparing organochlorosilanes and more particularly, to the process for preparing organochlorosilanes of R4R3CHSiR1Cl2 (I) by a dehydrohalogenative coupling of hydrochlorosilanes of HSiR1Cl2 (II) with organic halides of R2R3 CHX (III) in the presence of quaternary phosphonium salt as a catalyst to provide better economical matter and yield compared with conventional methods, because only a catalytic amount of phosphonium chloride is required and the catalyst can be separated from the reaction mixture and recycled easily.Type: GrantFiled: August 1, 2001Date of Patent: May 21, 2002Assignee: Korea Institute of Science and TechnologyInventors: Il-Nam Jung, Bok-Ryul Yoo, Joon-Soo Han, Seung-Hyun Kang
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Patent number: 6251057Abstract: The present invention relates to methods for making the compounds of formula I which is a dehydrohalogenative coupling of hydrochlorosilanes of formula II with organic halides of formula III in the presence of a Lewis base catalyst. R3CH2SiR1Cl2 (I) HSiR1Cl2 (II) R2CH2X (III) In formulas I and II, R1 represents a hydrogen, chloro, or methyl; in formula III, X represents a chloro or bromo; in formula III, R2 can be selected from the group consisting of a C1-17 alkyl, a C1-10 fluorinated alkyl with partial or full fluorination, a C1-5 alkenyl groups, a silyl group containing alkyls, (CH2)nSiMe3-mClm wherein n is 0 to 2 and m is 0 to 3, aromatic groups, Ar(R′)1 wherein Ar is C6-14 aromatic hydrocarbon, R′ is a C1-4 alkyl, halogen, alkoxy, or vinyl, and q is 0 to 5, a haloalkyl group, (CH2)pX wherein p is 1 to 9 and X is a chloro or bromo; or an aromatic hydrocarbon, Ar CH2X wherein Ar is C6-14 aromatic hydrocarbon and X is a chloro or bromo.Type: GrantFiled: April 5, 2000Date of Patent: June 26, 2001Assignee: Korea Institute of Science and TechnologyInventors: Il Nam Jung, Bok Ryul Yoo, Joon Soo Han, Seung-Hyun Kang, Yeon Seok Cho
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Patent number: 6087521Abstract: The present invention is organosilicon compounds described by formula (1) ##STR1## and formula (2) ##STR2## were R.sup.1 is selected from the group consisting of hydrogen, dichlorosilyl, trichlorosilyl, methyldichlorosilyl, dimethylchlorosilyl, and trimethylsilyl, each R.sup.2, R.sup.3, and R.sup.4 are independently selected from the group consisting of hydrogen, chlorine, alkoxy radicals comprising 1 to about 12 carbon atoms, aryloxy radicals comprising up to about 12 carbon atoms, aryl radicals comprising up to about 12 carbon atoms, and saturated hydrocarbon radicals comprising 1 to about 12 carbon atoms, and n=2 to 6; and methods for the making of organosilicon compounds described by formulas (1) and (2).Type: GrantFiled: May 17, 1999Date of Patent: July 11, 2000Inventors: Il Nam Jung, Bok Ryul Yoo, Joon Soo Han, Weon Cheol Lim
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Patent number: 6022987Abstract: Aryl substituted alkylsilanes represented by the formula I and a preparation method thereof by reacting substituted benzenes represented by the formula II with aryl substituted alkylsilanes represented by the formula III in the presence of Lewis acid catalysts such as aluminum chloride: ##STR1## wherein m, p, and q are 0 or 1, respectively; n and y are 0, 1, or 2, respectively; X.sup.1, X.sup.2, X.sup.3, X.sup.4, and X.sup.5 which are same or different represent hydrogen, fluoro, chloro; R represents C.sub.1 -C.sub.12 alkyl group; provided that if n is 0, m is 0 and if n is 1 or 2, at least two of X.sup.1, X.sup.2, X.sup.3, X.sup.4, and X.sup.5 represent chloro or fluoro group.Type: GrantFiled: December 23, 1997Date of Patent: February 8, 2000Assignee: Korea Institute of Science and TechnologyInventors: Il Nam Jung, Bok Ryul Yoo, Joon Soo Han, Yeon Seok Cho
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Patent number: 5998649Abstract: The invention is cyclic organosilicon compounds described by formula ##STR1## and by formula ##STR2## and linear organosilicon compounds by formula ##STR3## and by formula ##STR4## where R.sup.1 is selected from the group consisting of hydrogen, dichlorosilyl, trichlorosilyl, methyldichlorosilyl, dimethylchlorosilyl, and trimethylsilyl, and each R.sup.2 is independently selected from the group consisting of hydrogen, alkyls comprising one to about 6 carbon atoms, and aryls; and methods for making the described cyclic organosilicon compounds and linear organosilicon compounds.Type: GrantFiled: May 17, 1999Date of Patent: December 7, 1999Inventors: Il Nam Jung, Bok Ryul Yoo, Joon Soo Han, Weon Cheol Lim
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Patent number: 5965762Abstract: New chlorohydrosilane derivatives having the general formula (I) and preparation method thereof. The chlorohydrosilane derivatives (I) of the present invention which have both Si--Cl and Si--H bonds are prepared by partially reducing chlorosilane of the formula (II) which have at least two Si--Cl bonds with lithiumaluminum hydride. The chlorohydrosilane derivatives (I) of the present invention, which have both Si--H and Si--Cl bonds in a molecule can be advantageously used in preparing various compounds because a Si--H bond enables the hydrosilylation with unsaturated organic compounds, while a Si--Cl bond can participate in hydrolysis or in a reaction with a nucleophilic compound such as Grignard reatent: ##STR1## wherein R.sup.1 is straight, branched, or cyclic alkyl group having 1 to 30 carbon atoms, which can include an aromatic group or heterocyclic group, and R.sup.Type: GrantFiled: July 9, 1998Date of Patent: October 12, 1999Assignee: Korea Institute of Science and TechnologyInventors: Il Nam Jung, Bok Ryul Yoo, Joon Soo Han, Weon-Cheol Lim
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Patent number: 5847182Abstract: The present invention relates to fluorenyl substituted organosilanes represented by the formula I and preparation methods thereof by reacting substituted biphenyls represented by the formul II with (dichloroalkyl)silanes represented by the formul III in the presence of Lewis acid catalysts such as aluminum chloride: ##STR1## (wherein m is 0 or 1 and n is 0, 1, or 2. y1 and y2 represent hydrogen, bromo, phenyl and they can be same or different. R represents hydrogen or methyl group. R.sub.j.sup.- can be dichloromethyl, 2,2-dichloroethyl, 3,3-dichloropropyl, 1,2-dichloroethyl, 2,3-dichloropropyl, 2,3-dichlorobutyl).Type: GrantFiled: March 19, 1998Date of Patent: December 8, 1998Assignee: Korea Institue of Science and TechnologyInventors: Il Nam Jung, Bok Ryul Yoo, Joon Soo Han, Yeon Seok Cho
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Patent number: 5760263Abstract: The present invention relates to ferrocenes containing silylalkyl groups, represented by formula(I) and their preparation methods by reacting ferrocene with allylchlorosilanes represented by formula(II) in the presence of Lewis acid catalysts such as aluminum chloride: ##STR1## wherein R.sup.1 represents hydrogen, C.sub.1 -C.sub.12 alkyl, or C.sub.1 -C.sub.12 alkyl containing phenyl group; R.sup.2 represents chloro, C.sub.1 -C.sub.12 alkyl, or C.sub.1 -C.sub.12 alkyl containing phenyl group; and n and m are 0, 1 or 2, respectively, and at least one of n and m is not zero.Type: GrantFiled: June 23, 1997Date of Patent: June 2, 1998Assignee: Korea Institute of Science and TechnologyInventors: Il Nam Jung, Sam Young Ahn, Bok Ryul Yoo, Joon Soo Han