Patents by Inventor Naoya Otsuki
Naoya Otsuki 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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Publication number: 20220251431Abstract: An object of the present invention is to provide an adhesive composition that causes less warpage in adhering materials made of different substances and is superior in adhesion force with keeping bulk strength in the cured product. The present invention is an adhesive composition containing the following components (A) to (D): component (A): an epoxy-modified plant oil; component (B): a curable resin at least containing an elastomer-modified epoxy resin, provided that the component (A) is excluded; component (C): a tackifier; and component (D): a latent curing agent.Type: ApplicationFiled: June 3, 2020Publication date: August 11, 2022Inventor: Naoya OTSUKI
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Publication number: 20220177748Abstract: An object of the present invention is to provide an adhesive composition that causes less warpage when dissimilar materials are bonded together, and has excellent adhesive strength. The present invention relates to an adhesive composition comprising a component (A) that is a monofunctional epoxy resin, a component (B) that is a polyfunctional radically polymerizable compound, a component (C) that is a curing agent, and a component (D) that is a thermal radical initiator, the component (C) being one or more selected from the group consisting of a component (c-1) that is an epoxy adduct-type latent curing agent, a component (c-2) that is a hydrazide compound, a component (c-3) that is a cyclic amidine salt, and a component (c-4) that is a thermal cationic polymerization initiator.Type: ApplicationFiled: March 13, 2020Publication date: June 9, 2022Inventor: Naoya OTSUKI
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Patent number: 10294310Abstract: An object of the present invention is to provide a photocurable composition from which a cured product having high concealing property is obtained by irradiation with an active energy ray such as ultraviolet ray, and which inhibits color fading of the cured product in a high temperature and high humidity (85 C and 85% RH) environment or a high temperature (100 C) environment. A photocurable composition including the following components (A) to (D): component (A): a leuco dye; component (B): a salt having an anion selected from the group consisting of [P(Rf)aF6-a]?, [Sb(Rf)bF6-b]? and [B(Rf)cF4-c]? (in the formulae, Rf represents a fluoroalkyl group having 1 to 20 carbon atoms, a and b each independently represent an integer of from 1 to 5, and c represents an integer of from 1 to 3); component (C): a radical polymerizable compound; and component (D): a photoradical initiator.Type: GrantFiled: January 21, 2016Date of Patent: May 21, 2019Assignee: THREE BOND CO., LTD.Inventors: Yuko Takeo, Naoya Otsuki
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Patent number: 10246538Abstract: The object of the present invention is to provide a photocurable resin composition which allows obtainment of a cured product that has high concealability, while being suppressed in fading due to ultraviolet light, a cured product of the photocurable resin composition, and a method for producing a cured product. The present invention relates to a photocurable resin composition containing the following component (A) to component (D): component (A): leuco dye; component (B): photoacid generating agent; component (C): radical polymerizable compound; and component (D): ?-hydroxy acetophenone-based radical initiator which has a 5% weight loss temperature (thermal decomposition temperature) in a nitrogen atmosphere of 200° C., or higher as determined by a TGA method at a temperature increase rate, of 10° C./minute.Type: GrantFiled: September 2, 2015Date of Patent: April 2, 2019Assignee: THREE BOND CO., LTD.Inventors: Yuko Takeo, Naoya Otsuki
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Patent number: 10240026Abstract: An object of the present invention is to provide a photocurable resin composition having excellent thick-film curability and further excellent storage stability, and a cured product of the photocurable resin composition has a high concealing effect. The present invention is a photocurable resin composition containing components (A) to (E): a component (A): a leuco dye; a component (B): a photoacid generator; a component (C): a radical polymerizable compound (except for a (meth)acrylate having a tertiary amine skeleton); a component (D): a photoradical polymerization initiator; and a component (E): a tertiary amine compound.Type: GrantFiled: July 10, 2015Date of Patent: March 26, 2019Assignee: THREE BOND CO., LTD.Inventors: Yuko Takeo, Naoya Otsuki
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Publication number: 20180022838Abstract: An object of the present invention is to provide a photocurable composition from which a cured product having high concealing property is obtained by irradiation with an active energy ray such as ultraviolet ray, and which inhibits color fading of the cured product in a high temperature and high humidity (85 C and 85% RH) environment or a high temperature (100 C) environment. A photocurable composition including the following components (A) to (D): component (A): a leuco dye; component (B): a salt having an anion selected from the group consisting of [P(Rf)aF6-a]?, [Sb(Rf)bF6-b]? and [B(Rf)cF4-c]? (in the formulae, Rf represents a fluoroalkyl group having 1 to 20 carbon atoms, a and b each independently represent an integer of from 1 to 5, and c represents an integer of from 1 to 3); component (C): a radical polymerizable compound; and component (D): a photoradical initiator.Type: ApplicationFiled: January 21, 2016Publication date: January 25, 2018Inventors: Yuko TAKEO, Naoya OTSUKI
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Publication number: 20170313801Abstract: The object of the present invention is to provide a photocurable resin composition. which allows obtainment of a cured product that has high concealability, while being suppressed in fading due to ultraviolet light, a cured product of the photocurable resin composition, and a method for producing a cured product. The present invention relates to a photocurable resin composition containing the, following component (A) to component (D): component (A): leuco dye; component (B): photoacid generating agent; component (C): radical polymerizable compound; and component (D): ?-hydroxy acetophenone-based radical initiator which has a 5% weight loss temperature (thermal decomposition temperature) in a nitrogen atmosphere of 200° C., or higher as determined by a TGA method at a temperature increase rate, of 10° C./minute.Type: ApplicationFiled: September 2, 2015Publication date: November 2, 2017Inventors: Yuko TAKEO, Naoya OTSUKI
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Publication number: 20170283584Abstract: An object of the present invention is to provide a photocurable resin composition having excellent thick-film curability and further excellent storage stability, and a cured product of the photocurable resin composition has a high concealing effect. The present invention is a photocurable resin composition containing components (A) to (E): a component (A): a leuco dye; a component (B): a photoacid generator; a component (C): a radical polymerizable compound (except for a (meth)acrylate having a tertiary amine skeleton); a component (D): a photoradical polymerization initiator; and a component (E): a tertiary amine compound.Type: ApplicationFiled: July 10, 2015Publication date: October 5, 2017Inventors: Yuko TAKEO, Naoya OTSUKI
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Patent number: 9023949Abstract: Conventionally, a photocurable resin can be used for forming a soft cured product but is difficult to have thick film curability and exhibit moisture resistance. A photocurable composition containing components (A) to (D), in which a ratio of a (meth)acrylate monomer having an aromatic group in the component (C) is 30 to 100%: the component (A): an isoprene polymer having a (meth)acrylic group, the component (B): an isoprene polymer having a hydroxyl group, the component (C): at least one kind of (meth)acrylate monomers selected from a (meth)acrylate monomer having an aromatic group and an alkyl (meth)acrylate monomer, and the component (D): a hydrogenated terpene resin.Type: GrantFiled: March 6, 2014Date of Patent: May 5, 2015Assignee: Three Bond Fine Chemical Co., Ltd.Inventors: Yusuke Imai, Naoya Otsuki, Huo Chuanjia
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Publication number: 20140256882Abstract: Conventionally, a photocurable resin can be used for forming a soft cured product but is difficult to have thick film curability and exhibit moisture resistance. A photocurable composition containing components (A) to (D), in which a ratio of a (meth)acrylate monomer having an aromatic group in the component (C) is 30 to 100%: the component (A): an isoprene polymer having a (meth)acrylic group, the component (B): an isoprene polymer having a hydroxyl group, the component (C): at least one kind of (meth)acrylate monomers selected from a (meth)acrylate monomer having an aromatic group and an alkyl (meth)acrylate monomer, and the component (D): a hydrogenated terpene resin.Type: ApplicationFiled: March 6, 2014Publication date: September 11, 2014Inventors: Yusuke Imai, Naoya Otsuki, Huo Chuanjia