Patents by Inventor Eui-chul Kang
Eui-chul Kang 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: 10435509Abstract: A hetero type monodispersed polyethylene glycol containing a compound represented by the following formula (1): NH2—(CH2CH2O)a—CH2CH2COOH??(1) (in the formula (1), a represents an integer from 6 to 40); wherein any of (A) a chromatogram detected by a differential refractometer when the hetero type monodispersed polyethylene glycol is separated using reverse phase chromatography, (B) a chromatogram detected by a differential refractometer when the hetero type monodispersed polyethylene glycol is separated using cation exchange chromatography, and (C) a chromatogram detected by a differential refractometer when the hetero type monodispersed polyethylene glycol containing a compound represented by the formula (1) shown above is derivatized and separated using anion exchange chromatography satisfy specific relational expressions, respectively.Type: GrantFiled: June 29, 2016Date of Patent: October 8, 2019Assignees: TOHOKU TECHNO ARCH CO., LTD., NOF CORPORATIONInventors: Kazushi Kinbara, Takahiro Muraoka, Adam Marcin Wawro, Tomoyuki Ohtake, Eui-chul Kang, Tomoki Uruga, Ryutaro Imamura
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Patent number: 10017655Abstract: Provided are a silver element containing silver acetonedicarboxylate with high silver content, and capable of providing a silver element with excellent electrical conductivity, flatness, and adhesivity through heating even for a short time at a low temperature of below the decomposition temperature of the silver salt, and having excellent storage stability, as well as a substrate having a silver element formed thereon with the composition. The composition is characterized by a particular ratio of silver compound (A) represented by formula (1) and amine compound (B) represented by formula (2): (R1: H, —(CY2)a-CH3, —((CH2)b-O—CHZ)c-CH3; R2: —(CY2)d-CH3, —((CH2)e-O—CHZ)f-CH3, Y: H, —(CH2)g-CH3; Z: H, —(CH2)h-CH3; a: 0-8; b: 1-4; c: 1-3; d: 1-8; e: 1-4; f: 1-3; g: 1-3; h: 1-2).Type: GrantFiled: July 17, 2012Date of Patent: July 10, 2018Assignee: NOF CORPORATIONInventors: Koichi Aoki, Eui-Chul Kang, Tatsuya Kozu, Toshinobu Fujimura
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Publication number: 20180186931Abstract: A hetero type monodispersed polyethylene glycol containing a compound represented by the following formula (1): NH2—(CH2CH2O)a—CH2CH2COOH??(1) (in the formula (1), a represents an integer from 6 to 40); wherein any of (A) a chromatogram detected by a differential refractometer when the hetero type monodispersed polyethylene glycol is separated using reverse phase chromatography, (B) a chromatogram detected by a differential refractometer when the hetero type monodispersed polyethylene glycol is separated using cation exchange chromatography, and (C) a chromatogram detected by a differential refractometer when the hetero type monodispersed polyethylene glycol containing a compound represented by the formula (1) shown above is derivatized and separated using anion exchange chromatography satisfy specific relational expressions, respectively.Type: ApplicationFiled: June 29, 2016Publication date: July 5, 2018Applicants: TOHOKU TECHNO ARCH CO., LTD., NOF CORPORATIONInventors: Kazushi KINBARA, Takahiro MURAOKA, Marcin Adam WAWRO, Tomoyuki OHTAKE, Eui-chul KANG, Tomoki URUGA, Ryutaro IMAMURA
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Patent number: 9496069Abstract: Provided are silver nanoparticles having excellent dispersion stability and capable of forming on a substrate a silver element, such as a silver film or line, having excellent electrical conductivity and adhesivity through heating. A method for producing the silver nanoparticles, its dispersion liquid, and a substrate having a silver element formed thereon using the dispersion liquid are disclosed. The silver nanoparticles contain silver compound (A) of formula (1): amine compound (B) having a primary amino group; and polymer (C) obtained by polymerization of a monomer composition containing diol (meth)acrylate compound (c1) having a urethane bond of formula (2): (R1: hydrogen atom or methyl group; R2: —(CH2)n-; n: 1 to 4), and at least one monomer (c2) selected from (meth)acrylate monomers, acrylamide monomers, vinyl monomers, vinyl ether monomers, or monomers having an epoxy group.Type: GrantFiled: May 29, 2013Date of Patent: November 15, 2016Assignee: NOF CORPORATIONInventors: Tatsuya Kozu, Masaya Hikita, Eui-chul Kang
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Patent number: 9157004Abstract: A composition for copper patterning and a method of copper patterning using the composition are provided, which composition is excellently safe in copper patterning, sintering at lower temperatures, and capable of forming a highly conducive copper pattern of a desired shape even on a plastic substrate. The composition contains Component A: a copper ?-ketocarboxylate compound of formula (1): (R1, R2: H or C1-C6 straight- or C3-C6 branched-hydrocarbon group, etc.); and based on 1 mol of this compound, Component B: an amine compound having a boiling point of not higher than 250° C. at 0.1 to 500 mol; and Component C-1: an organic acid having pKa of not more than 4 at 0.01 to 20 mol, and/or Component C-2: an organic copper compound composed of copper and an organic acid having pKa of not more than 4 at 0.01 to 100 mol. The composition is useful in the field of electronics.Type: GrantFiled: October 23, 2012Date of Patent: October 13, 2015Assignees: NOF CORPORATION, OSAKA UNIVERSITYInventors: Eui-chul Kang, Tomoyuki Ohtake, Katsuaki Suganuma, Masaya Nogi, Natsuki Komoda
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Publication number: 20150206618Abstract: Provided are silver nanoparticles having excellent dispersion stability and capable of forming on a substrate a silver element, such as a silver film or line, having excellent electrical conductivity and adhesivity through heating. A method for producing the silver nanoparticles, its dispersion liquid, and a substrate having a silver element formed thereon using the dispersion liquid are disclosed. The silver nanoparticles contain silver compound (A) of formula (1): amine compound (B) having a primary amino group; and polymer (C) obtained by polymerization of a monomer composition containing diol (meth)acrylate compound (c1) having a urethane bond of formula (2): (R1: hydrogen atom or methyl group; R2: —(CH2)n-; n: 1 to 4), and at least one monomer (c2) selected from (meth)acrylate monomers, acrylamide monomers, vinyl monomers, vinyl ether monomers, or monomers having an epoxy group.Type: ApplicationFiled: May 29, 2013Publication date: July 23, 2015Applicant: NOF CORPORATIONInventors: Tatsuya Kozu, Masaya Hikita, Eui-chul Kang
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Publication number: 20150203699Abstract: Provided are a silver element containing silver acetonedicarboxylate with high silver content, and capable of providing a silver element with excellent electrical conductivity, flatness, and adhesivity through heating even for a short time at a low temperature of below the decomposition temperature of the silver salt, and having excellent storage stability, as well as a substrate having a silver element formed thereon with the composition. The composition is characterized by a particular ratio of silver compound (A) represented by formula (1) and amine compound (B) represented by formula (2): (R1: H, —(CY2)a-CH3, —((CH2)b-O—CHZ)c-CH3; R2: —(CY2)d-CH3, —((CH2)e-O—CHZ)f-CH3, Y: H, —(CH2)g-CH3; Z: H, —(CH2)h-CH3; a: 0-8; b: 1-4; c: 1-3; d: 1-8; e: 1-4; f: 1-3; g: 1-3; h: 1-2).Type: ApplicationFiled: July 17, 2012Publication date: July 23, 2015Applicant: NOF CORPORATIONInventors: Koichi Aoki, Eui-chul Kang, Tatsuya Kozu, Toshinobu Fujimura
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Publication number: 20140305684Abstract: A composition for copper patterning and a method of copper patterning using the composition are provided, which composition is excellently safe in copper patterning, sintering at lower temperatures, and capable of forming a highly conducive copper pattern of a desired shape even on a plastic substrate. The composition contains Component A: a copper ?-ketocarboxylate compound of formula (1): (R1, R2: H or C1-C6 straight- or C3-C6 branched-hydrocarbon group, etc.); and based on 1 mol of this compound, Component B: an amine compound having a boiling point of not higher than 250° C. at 0.1 to 500 mol; and Component C-1: an organic acid having pKa of not more than 4 at 0.01 to 20 mol, and/or Component C-2: an organic copper compound composed of copper and an organic acid having pKa of not more than 4 at 0.01 to 100 mol. The composition is useful in the field of electronics.Type: ApplicationFiled: October 23, 2012Publication date: October 16, 2014Applicants: OSAKA UNIVERSITY, NOF CORPORATIONInventors: Eui-chul Kang, Tomoyuki Ohtake, Katsuaki Suganuma, Masaya Nogi, Natsuki Komoda
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Patent number: 8399558Abstract: The present disclosure provides an inorganic-organic hybrid film which is excellent in transparency, adhesion, heat resistance, weatherability, and anti-rust property, whose refractive index may be controlled easily, and which is also excellent in hardness. Also provided are an inorganic-organic hybrid composition as a starting material for the film, and a hard coating material, an optical material, an anti-rust coating material, and a conductive coating material, all utilizing the composition. The composition is characterized by containing organic component (A) composed of monomer component (a1) containing a particular diol (meth)acrylate compound (U) having a urethane bond, or polymer component (a2) containing polymer (P) obtained by polymerization of monomer component (a1), and inorganic component (B), wherein the ratio of the organic component (A) to the inorganic component (B) is 1:99 to 99:1 by mass.Type: GrantFiled: June 19, 2007Date of Patent: March 19, 2013Assignee: NOF CorporationInventors: Eui-chul Kang, Atsuhiko Ogura, Shingo Kataoka, Kenji Ito
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Publication number: 20120276179Abstract: The invention provides a cosmetic product which has a good texture and allows full expression of the inherent functions of ceramide as an intercellular lipid, such as skin barrier function and hair protection effect, as well as nanoparticles for cosmetics and powder for cosmetics which may be used in the above cosmetic product, exhibit good skin barrier function and hair protection effect, and are easy to incorporate into the above cosmetic product. The cosmetic product, the nanoparticles, and the powder for cosmetics according to the present invention contain a polymer obtained by polymerization of a monomer material containing a glycerol(meth)acrylate monomer represented by the formula (1): (R1: —H, —CH3; R2: —(CH2)n-; n is an integer of 1 to 4).Type: ApplicationFiled: June 29, 2012Publication date: November 1, 2012Applicant: NOF CORPORATIONInventors: Hiroki Fukui, Yoshimi Sekine, Daisuke Kayaba, Eui-chul Kang, Atsuhiko Ogura, Kenshiro Shuto
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Patent number: 7763694Abstract: The present invention provides compounds having in their molecule a structure contributing to high hydrophilicity, and having high photopolymerizability, as well as polymers of such compounds, and a method for producing the compound. The compounds are diol (meth)acrylate having a urethane bond represented by the formula (1), and cyclic ketal (meth)acrylate having a urethane bond represented by the formula (2): (R1: H, —CH3; R2: —(CH2)n-; R3: —(CH2)m-; n: 1-4; m: 1-8; (AO): C2-C4 oxyalkylene group; x: 0-1000; R4, R5: H, —CH3, —C2H5).Type: GrantFiled: December 4, 2009Date of Patent: July 27, 2010Assignee: NOF CorporationInventors: Eui-chul Kang, Atsuhiko Ogura, Shingo Kataoka, Takashi Iwata
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Patent number: 7763695Abstract: The present invention provides compounds having in their molecule a structure contributing to high hydrophilicity, and having high photopolymerizability, as well as polymers of such compounds, and a method for producing the compound. The compounds are diol (meth)acrylate having a urethane bond represented by the formula (1), and cyclic ketal (meth)acrylate having a urethane bond represented by the formula (2): (R1: H, —CH3; R2: —(CH2)n-; R3: —(CH2)m-; n: 1-4; m: 1-8; (AO): C2-C4 oxyalkylene group; x: 0-1000; R4, R5: H, —CH3, —C2H5).Type: GrantFiled: December 4, 2009Date of Patent: July 27, 2010Assignee: NOF CorporationInventors: Eui-chul Kang, Atsuhiko Ogura, Shingo Kataoka, Takashi Iwata
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Publication number: 20100081779Abstract: The present invention provides compounds having in their molecule a structure contributing to high hydrophilicity, and having high photopolymerizability, as well as polymers of such compounds, and a method for producing the compound. The compounds are diol (meth)acrylate having a urethane bond represented by the formula (1), and cyclic ketal (meth)acrylate having a urethane bond represented by the formula (2): (R1: H, —CH3; R2: —(CH2)n—; R3: —(CH2)m—; n: 1-4; m: 1-8; (AO): C2-C4 oxyalkylene group; x: 0-1000; R4, R5: H, —CH3, —C2H5).Type: ApplicationFiled: December 4, 2009Publication date: April 1, 2010Applicant: NOF CorporationInventors: Eui-chul Kang, Atsuhiko Ogura, Shingo Kataoka, Takashi Iwata
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Publication number: 20100081780Abstract: The present invention provides compounds having in their molecule a structure contributing to high hydrophilicity, and having high photopolymerizability, as well as polymers of such compounds, and a method for producing the compound. The compounds are diol (meth)acrylate having a urethane bond represented by the formula (1), and cyclic ketal (meth)acrylate having a urethane bond represented by the formula (2): (R1: H, —CH3; R2: —(CH2)n-; R3: —(CH2)m-; n: 1-4; m: 1-8; (AO): C2-C4 oxyalkylene group; x: 0-1000; R4, R5: H, —CH3, —C2H5).Type: ApplicationFiled: December 4, 2009Publication date: April 1, 2010Applicant: NOF CorporationInventors: Eui-chul Kang, Atsuhiko Ogura, Shingo Kataoka, Takashi Iwata
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Publication number: 20100040697Abstract: The invention provides a cosmetic product which has a good texture and allows full expression of the inherent functions of ceramide as an intercellular lipid, such as skin barrier function and hair protection effect, as well as nanoparticles for cosmetics and powder for cosmetics which may be used in the above cosmetic product, exhibit good skin barrier function and hair protection effect, and are easy to incorporate into the above cosmetic product. The cosmetic product, the nanoparticles, and the powder for cosmetics according to the present invention contain a polymer obtained by polymerization of a monomer material containing a glycerol (meth)acrylate monomer represented by the formula (1): (R1: —H, —CH3; R2: —(CH2)n-; n is an integer of 1 to 4).Type: ApplicationFiled: October 19, 2009Publication date: February 18, 2010Applicant: NOF CORPORATIONInventors: Hiroki Fukui, Yoshimi Sekine, Daisuke Kayaba, Eui-chul Kang, Atsuhiko Ogura, Kenshiro Shuto
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Patent number: 7649106Abstract: The present invention provides compounds having in their molecule a structure contributing to high hydrophilicity, and having high photopolymerizability, as well as polymers of such compounds, and a method for producing the compound. The compounds are diol (meth)acrylate having a urethane bond represented by the formula (1), and cyclic ketal (meth)acrylate having a urethane bond represented by the formula (2): (R1: H, —CH3; R2: —(CH2)n-; R3: —(CH2)m-; n: 1-4; m: 1-8; (AO): C2-C4 oxyalkylene group; x: 0-1000; R4, R5: H, —CH3, —C2H5).Type: GrantFiled: June 4, 2009Date of Patent: January 19, 2010Assignee: NOF CorporationInventors: Eui-chul Kang, Atsuhiko Ogura, Shingo Kataoka, Takashi Iwata
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Patent number: 7649105Abstract: The present invention provides compounds having in their molecule a structure contributing to high hydrophilicity, and having high photopolymerizability, as well as polymers of such compounds, and a method for producing the compound. The compounds are diol (meth)acrylate having a urethane bond represented by the formula (1), and cyclic ketal (meth)acrylate having a urethane bond represented by the formula (2): (R1: H, —CH3; R2: —(CH2)n-; R3: —(CH2)m-; n: 1-4; m: 1-8; (AO): C2-C4 oxyalkylene group; x: 0-1000; R4, R5: H, —CH3, —C2H5).Type: GrantFiled: June 4, 2009Date of Patent: January 19, 2010Assignee: NOF CorporationInventors: Eui-chul Kang, Atsuhiko Ogura, Shingo Kataoka, Takashi Iwata
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Publication number: 20090247718Abstract: The present invention provides compounds having in their molecule a structure contributing to high hydrophilicity, and having high photopolymerizability, as well as polymers of such compounds, and a method for producing the compound. The compounds are diol (meth)acrylate having a urethane bond represented by the formula (1), and cyclic ketal (meth)acrylate having a urethane bond represented by the formula (2): (R1: H, —CH3; R2: —(CH2)n-; R3: —(CH2)m-; n: 1-4; m: 1-8; (AO): C2-C4 oxyalkylene group; x: 0-1000; R4, R5: H, —CH3, —C2H5).Type: ApplicationFiled: June 4, 2009Publication date: October 1, 2009Applicant: NOF CorporationInventors: Eui-chul KANG, Atsuhiko OGURA, Shingo KATAOKA, Takashi IWATA
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Publication number: 20090240015Abstract: The present invention provides compounds having in their molecule a structure contributing to high hydrophilicity, and having high photopolymerizability, as well as polymers of such compounds, and a method for producing the compound. The compounds are diol (meth)acrylate having a urethane bond represented by the formula (1), and cyclic ketal (meth)acrylate having a urethane bond represented by the formula (2): (R1: H, —CH3; R2: —(CH2)n-; R3: —(CH2)m-; n: 1-4; m: 1-8; (AO): C2-C4 oxyalkylene group; x: 0-1000; R4, R5: H, —CH3, —C2H5).Type: ApplicationFiled: June 4, 2009Publication date: September 24, 2009Applicant: NOF CorporationInventors: Eui-chul Kang, Atsuhiko Ogura, Shingo Kataoka, Takashi Iwata
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Publication number: 20090208719Abstract: The present disclosure provides an inorganic-organic hybrid film which is excellent in transparency, adhesion, heat resistance, weatherability, and anti-rust property, whose refractive index may be controlled easily, and which is also excellent in hardness. Also provided are an inorganic-organic hybrid composition as a starting material for the film, and a hard coating material, an optical material, an anti-rust coating material, and a conductive coating material, all utilizing the composition. The composition is characterized by containing organic component (A) composed of monomer component (a1) containing a particular diol (meth)acrylate compound (U) having a urethane bond, or polymer component (a2) containing polymer (P) obtained by polymerization of monomer component (a1), and inorganic component (B), wherein the ratio of the organic component (A) to the inorganic component (B) is 1:99 to 99:1 by mass.Type: ApplicationFiled: June 19, 2007Publication date: August 20, 2009Applicant: NOF CorporationInventors: Eui-chul Kang, Atsuhiko Ogura, Shingo Kataoka, Kenji Ito