Patents Assigned to Kyoeisha Chemical Co., Ltd.
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Publication number: 20240052128Abstract: Provided is an EVOH extractant capable of efficiently extracting EVOH from an EVOH layer-containing multilayer resin molded body. Provided is a method for efficiently extracting and recovering EVOH from an EVOH layer-containing multilayer resin molded body. An EVOH extractant including a polar solvent having an SP value of 9 to 13 and a quaternary ammonium salt. An EVOH extraction method for extracting EVOH, including applying the EVOH extractant described above to an EVOH layer-containing multilayer resin molded body. An EVOH recovery method including a step of mixing a solution containing EVOH that has been extracted by the EVOH extraction method described above with water and/or a lower alcohol to deposit EVOH, followed by filtration or centrifugation.Type: ApplicationFiled: January 5, 2022Publication date: February 15, 2024Applicant: KYOEISHA CHEMICAL CO., LTD.Inventors: Makoto ISHIKAWA, Yoshihisa KATSUNISHI, Masashi KINUGAWA
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Publication number: 20240043573Abstract: The present invention provides a polymerizable unsaturated group-containing cyclodextrin derivative, which can be efficiently prepared with a higher yield and a higher purity, and which can be mass-produced. The polymerizable unsaturated group-containing cyclodextrin derivative is represented by the following general formula (1). (In the formula, R1 represents any one of (A) the following general formula (2) —R3—NH—R4 ??(2) (R3 is an alkylene group having 3 to 20 carbon atoms, may be linear or branched, and may have a substituent. R4 represents a (meth)acryloyl group or a vinyl group-containing alkyl group having 3 to 50 carbon atoms.) (B) the following general formula (3) —R5—NHCONH—R6 ??(3) (R5 is an alkylene group having 3 to 20 carbon atoms, may be linear or branched, and may have a substituent.Type: ApplicationFiled: July 21, 2021Publication date: February 8, 2024Applicant: KYOEISHA CHEMICAL CO., LTD.Inventors: Yuya TAKAHASHI, Bunsho KURE, Tsuyoshi YAMAGUCHI, Naomi TAKENAKA, Yoshinori TAKASHIMA, Akira HARADA, Motofumi OSAKI
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Publication number: 20230151154Abstract: A viscosity modifier is thermally stable and can provide an excellent viscosity-increasing effect and/or an anti-sagging effect, and is used by the addition to a paint, a coating agent, a painting agent, a flux, an adhesive material, and a sealing material that are produced/used under high temperature conditions. A film-forming agent contains the viscosity modifier including a polyamide component that contains a polyamide compound from a C2-10 aliphatic and/or C6-10 aromatic primary diamine and a C12-36 polybasic acid and/or a C12-30 unsubstituted or hydroxy-substituted aliphatic monocarboxylic acid. The film-forming agent contains the viscosity modifier and a film-forming component and is at least any one selected from a paint, a coating material, a painting material, a flux, an adhesive material, and a sealing material.Type: ApplicationFiled: November 17, 2021Publication date: May 18, 2023Applicant: KYOEISHA CHEMICAL CO., LTD.Inventors: Shu NODA, Yousuke KATAOKA, Nobuaki NAKATSUKA, Masahiro TAKAGI
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Publication number: 20230110863Abstract: Provided is a thermosetting resin composition that has high reactivity, can be adapted to various curing conditions, and has extremely high versatility. The thermosetting resin composition contains a resin component (A) containing —COOR (R is an alkyl group having 50 or less carbon atoms) and a hydroxy group, and a transesterification catalyst (B). A curing start temperature is 130° C. or lower, and a gel fraction when cured under a condition of baking at 150° C. for 30 minutes is 80% or more.Type: ApplicationFiled: February 24, 2021Publication date: April 13, 2023Applicant: KYOEISHA CHEMICAL CO., LTD.Inventors: Yuya MORIWAKI, Tomoya MATSUDA, Kosuke ASADA, Masaru DONKAI, Hiroki NAKAGAWA, Keiji MAEO, Narutoshi YOSHIDA, Naomi TAKENAKA
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Patent number: 11618816Abstract: An object of the present invention is to provide a method for forming a multilayer coating film with excellent performance such as acid resistance, by using a coating composition which is completely different from conventional clear coating compositions and cheaper than conventional non-melamine curing type, acid/epoxy type, and isocyanate type clear coating compositions. A method for forming a multilayer coating film comprising a step (1) of applying a base coating composition and a step (2) of applying a clear coating composition on a coating film formed in the step (1), wherein the clear coating composition causes a curing reaction through a transesterification reaction between a hydroxyl group and an alkyl ester group.Type: GrantFiled: June 3, 2020Date of Patent: April 4, 2023Assignee: KYOEISHA CHEMICAL CO., LTD.Inventors: Yuya Moriwaki, Kosuke Asada, Masaru Donkai, Naomi Takenaka
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Publication number: 20230087596Abstract: Provided is a thermosetting resin composition, from which a cured product having excellent transparency with less yellowing than that in the related art can be obtained, and which is advantageous in cost because a monomer obtained by using an inexpensive raw material is used. An ester compound contains, in one molecule, at least one functional group represented by the following general formula (1) or (2). (In both the general formulae (1) and (2), R1 is an alkyl group having 50 or less carbon atoms. R2 is an alkylene group having 50 or less carbon atoms that may contain an oxygen atom and a nitrogen atom as a portion thereof.Type: ApplicationFiled: December 22, 2020Publication date: March 23, 2023Applicant: KYOEISHA CHEMICAL CO., LTD.Inventors: Masaru DONKAI, Yuya MORIWAKI, Tomoya MATSUDA, Kosuke ASADA, Hiroki NAKAGAWA, Keiji MAEO, Narutoshi YOSHIDA, Naomi TAKENAKA
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Publication number: 20230002530Abstract: [Problem] To obtain a thermosetting resin composition that has curing performance at a lower temperature and uses transesterification capable of also suitably coping with conversion into an aqueous form as a curing reaction. [Solution] A thermosetting resin composition containing a resin component (A), which includes a structure (a) represented by the following general formula (1) and a hydroxy group (b), and a transesterification catalyst (B). n=0 to 20 R1 is an alkyl group having 50 or less carbon atoms. R3 is hydrogen or an alkyl group having 10 or less carbon atoms.Type: ApplicationFiled: November 14, 2019Publication date: January 5, 2023Applicant: KYOEISHA CHEMICAL CO., LTD.Inventors: Yuya MORIWAKI, Tomoya MATSUDA, Kosuke ASADA, Masaru DONKAI, Hiroki NAKAGAWA, Keiji MAEO, Narutoshi YOSHIDA, Naomi TAKENAKA
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Publication number: 20220355253Abstract: A desalination performance restoration agent for a cellulose acetate membrane contains: a solvent; and a modified polyvinyl alcohol mixed in the solvent. The modified polyvinyl alcohol has an acetyl group structure in at least part of polyvinyl alcohol.Type: ApplicationFiled: October 20, 2020Publication date: November 10, 2022Applicants: MITSUBISHI HEAVY INDUSTRIES, LTD., KYOEISHA CHEMICAL CO., LTD.Inventors: Takayoshi HORI, Katsunori MATSUI, Sho YOKOGAWA, Yoshiaki ITO, Ryo KAMITO, Yoshihisa KATSUNISHI, Atsuyoshi UEDA, Takahiro MASUI
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Publication number: 20220251274Abstract: To provide a resin composition, which has both a thermosetting property and active energy curability, satisfactory performances, and excellent performances including handleability of being inexpensive without having a concern about a short pot life after blending with a thermal cross-linking agent as in the related art. The curable resin composition contains: a resin component (A) containing a (meth)acryloyl group (a), a hydroxy group (b), and an alkyl ester group (c); and an initiator (B).Type: ApplicationFiled: July 8, 2020Publication date: August 11, 2022Applicant: KYOEISHA CHEMICAL CO., LTD.Inventors: Yuya MORIWAKI, Tomoya MATSUDA, Kosuke ASADA, Masaru DONKAI, Naomi TAKENAKA, Hiroki NAKAGAWA
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Publication number: 20220195233Abstract: An object of the present invention is to provide a thermosetting coating material composition of which a transesterification reaction is a curing reaction, the thermosetting coating material having a property of being usable as a coating material composition. The thermosetting resin composition includes a compound (A) which is a compound (A-a) having two or more —COOR (R is a primary or secondary alkyl group) and/or a compound (A-b) having one —COOR (R is a primary or secondary alkyl group) and a hydroxyl group, and a polyol (B) having two or more hydroxyl groups and a transesterification catalyst (C).Type: ApplicationFiled: April 1, 2020Publication date: June 23, 2022Applicant: KYOEISHA CHEMICAL CO., LTD.Inventors: Yuya MORIWAKI, Kosuke ASADA, Masaru DONKAI, Naomi TAKENAKA
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Publication number: 20220112320Abstract: An object of the present invention is to obtain an aqueous thermosetting resin composition capable of obtaining satisfactory curing performance by a transesterification reaction between alkyl ester and a hydroxyl group. The aqueous thermosetting resin composition includes a resin component (A) that has —COOR (R is an alkyl group having 50 or less carbon atoms) and a hydroxyl group and a transesterification catalyst (B).Type: ApplicationFiled: April 1, 2020Publication date: April 14, 2022Applicant: KYOEISHA CHEMICAL CO., LTD.Inventors: Yuya MORIWAKI, Kosuke ASADA, Masaru DONKAI, Naomi TAKENAKA
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Patent number: 11155705Abstract: It is an object of the present invention to provide an unsaturated group-containing ester compound which can be used as a raw material of a curable composition using transesterification reaction and which is inexpensive and has a good curability, and a polymer, a thermosetting resin composition, and a curable composition which containing the unsaturated group-containing ester compound, respectively.Type: GrantFiled: April 10, 2019Date of Patent: October 26, 2021Assignee: KYOEISHA CHEMICAL CO., LTD.Inventors: Yuya Moriwaki, Kosuke Asada, Masaru Donkai, Naomi Takenaka
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Publication number: 20200291219Abstract: An object of the present invention is to provide a method for forming a multilayer coating film with excellent performance such as acid resistance, by using a coating composition which is completely different from conventional clear coating compositions and cheaper than conventional non-melamine curing type, acid/epoxy type, and isocyanate type clear coating compositions. A method for forming a multilayer coating film comprising a step (1) of applying a base coating composition and a step (2) of applying a clear coating composition on a coating film formed in the step (1), wherein the clear coating composition causes a curing reaction through a transesterification reaction between a hydroxyl group and an alkyl ester group.Type: ApplicationFiled: June 3, 2020Publication date: September 17, 2020Applicant: KYOEISHA CHEMICAL CO., LTD.Inventors: Yuya MORIWAKI, Kosuke ASADA, Masaru DONKAI, Naomi TAKENAKA
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Patent number: 10538610Abstract: A thermosetting resin composition using a transesterification reaction as a curing reaction, which has a good curability and can be used in various applications. A thermosetting resin composition comprising a polymer (A) composed of a monomer having a (meth) acrylic acid tertiary alkyl ester and a monomer having a hydroxyl group as a structural unit, and a transesterification catalyst (B) as an essential component, and being organic solvent-type or water-borne, wherein the polymer (A) has a glass transition temperature of 80° C. or lower.Type: GrantFiled: November 30, 2018Date of Patent: January 21, 2020Assignee: KYOEISHA CHEMICAL CO., LTD.Inventors: Yuya Moriwaki, Kosuke Asada, Masaru Donkai
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Publication number: 20190284385Abstract: It is an object of the present invention to provide an unsaturated group-containing ester compound which can be used as a raw material of a curable composition using transesterification reaction and which is inexpensive and has a good curability, and a polymer, a thermosetting resin composition, and a curable composition which containing the unsaturated group-containing ester compound, respectively.Type: ApplicationFiled: April 10, 2019Publication date: September 19, 2019Applicant: KYOEISHA CHEMICAL CO., LTD.Inventors: Yuya MORIWAKI, Kosuke ASADA, Masaru DONKAI, Naomi TAKENAKA
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Publication number: 20190144603Abstract: It is an object of the present invention to provide a thermosetting resin composition using a transesterification reaction as a curing reaction, which is inexpensive and has a good curability and can be used in various applications. A thermosetting resin composition which comprises an ester compound having two or more alkyl ester groups in a molecule (A), a compound having two or more hydroxyl groups in a molecule (B), and a transesterification catalyst (C).Type: ApplicationFiled: December 20, 2018Publication date: May 16, 2019Applicant: KYOEISHA CHEMICAL CO., LTD.Inventors: Yuya MORIWAKI, Kosuke ASADA, Masaru DONKAI, Naomi TAKENAKA
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Publication number: 20190092889Abstract: It is an object of the present invention to provide a thermosetting resin composition using a transesterification reaction as a curing reaction, which has a good curability and can be used in various applications. A thermosetting resin composition comprising a polymer (A) composed of a monomer having a (meth)acrylic acid tertiary alkyl ester and a monomer having a hydroxyl group as a structural unit, and a transesterification catalyst (B) as an essential component, and being organic solvent-type or water-borne, wherein the polymer (A) has a glass transition temperature of 80° C. or lower.Type: ApplicationFiled: November 30, 2018Publication date: March 28, 2019Applicant: KYOEISHA CHEMICAL CO., LTD.Inventors: Yuya MORIWAKI, Kosuke ASADA, Masaru DONKAI
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Patent number: 9409929Abstract: A (meth)allylsilane compound chemically bonded to various alcohol derivatives including polyol derivatives such as saccharides, is raw material used to cause a substrate to express functionalities such as a defogging property and separation characteristics for column chromatography, can be easily prepared, is easily purified, and is stable and easy to handle, and a functional material in which those functionalities are expressed, while silyl group-containing groups are conveniently carried at a high density on the surface of the substrate, by using the (meth)allylsilane compound as a silane coupling agent for silane-coupling to the substrate. The (meth)allylsilane compound includes a (meth)allylsilyl group-containing alkyl group or a (meth)allylsilylalkyl group-containing aralkyl group that is bonded to an alcohol derivative.Type: GrantFiled: June 28, 2012Date of Patent: August 9, 2016Assignees: KYOEISHA CHEMICAL CO., LTD., DAICEL CORPORATIONInventor: Toyoshi Shimada
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Patent number: 9228107Abstract: A (meth)allylsilane compound that a functional group of a (meth)allylsilyl group or a halogenosilyl group bonded to the (meth)allylsilyl group via a spacer group is bonded directly or through a divergent spacer group to a dehydrogenated residue of an amino group of an amino group-containing compound; a carbaminic acid ester group or an amide group derived from a dehydrogenated residue of the amino group; an aromatic compound; a polymerizable unsaturated groups; perfluoro group; a dehydrogenated residue of saccharide or a carbohydrate polyol (excluding when the divergent spacer group is an alkylene group, or an alkylene group and an arylene group); a dehydrogenated residue of an amino acid; a halogenosilyl group; or a substituted silyl group in which a halogen of the halogenosilyl group is substituted.Type: GrantFiled: June 28, 2012Date of Patent: January 5, 2016Assignees: KYOEISHA CHEMICAL CO., LTD., TOYOSHI SHIMADAInventors: Toyoshi Shimada, Yoshinori Takamatsu
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Publication number: 20150119524Abstract: Provided is an antifoaming agent for a coating agent, which suppresses foaming of a coating agent by being blended into a nonaqueous agent in a small amount, thereby improving pinhole preventing performance, and which may form a thermo-setting coating film or a thermo-drying coating film having an excellent aesthetic appearance by suppressing the generation of pinholes without deteriorating smoothing performance of the coating film even under conditions where pinholes are easily generated.Type: ApplicationFiled: April 25, 2013Publication date: April 30, 2015Applicant: KYOEISHA CHEMICAL CO., LTD.Inventors: Daisuke Mitomi, Yuusuke Sainouchi, Yousuke Kataoka