Patents Assigned to Japan U-PICA Company, Ltd.
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Publication number: 20230082542Abstract: An object of the present invention is to provide a crystalline radically polymerizable composition for fixing a magnet of a rotating electric machine rotor core, which is excellent in handleability around room temperature, excellent in fluidity from the injection step to the curing step, and excellent in strength of the cured product. A crystalline radical polymerizable composition for fixing a magnet of a rotating electric machine rotor core of the present invention is characterized by fixing the magnet inserted in a magnet accommodating portion provided in a rotor core of a rotating electric machine formed of a laminated steel sheet and the laminated steel sheet, wherein the crystalline radical polymerizable composition contains at least a crystalline radical polymerizable compound A, an inorganic filler B, a silane coupling agent C, and a radical polymerization initiator D, wherein the crystalline radical polymerizable compound A is solid at 23° C.Type: ApplicationFiled: March 29, 2021Publication date: March 16, 2023Applicants: Japan U-Pica Company, Ltd., AISIN CORPORATION, TOYOBO CO., LTD.Inventors: Tomohito OYAMA, Yuichi OZAWA, Ryo UETA, Yusaku SAKURABA, Motoki KORI, Toshiyuki SABURI, Masahito TANIGAWA, Daiki FUNAOKA
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Patent number: 11485801Abstract: [Problems] An object of the present invention is to provide a crystalline radical polymerizable composition which is excellent in flowability and is easy to handle. [Solution Means] The crystalline radical polymerizable composition for sealing electrical and electronic component according to the present invention is characterized by comprising at least a crystalline radical polymerizable compound, an inorganic filler, a silane coupling agent, and a radical polymerization initiator. In addition, in a preferred embodiment of the crystalline radical polymerizable composition for sealing electrical and electronic component according to the present invention, the crystalline radical polymerizable compound is characterized by comprising one or more selected from unsaturated polyester, epoxy (meth) acrylate, urethane (meth) acrylate, polyester (meth) acrylate, -polyether (meth) acrylate, radical polymerizable monomer and radical polymerizable polymer.Type: GrantFiled: February 20, 2018Date of Patent: November 1, 2022Assignee: Japan U-Pica Company, Ltd.Inventors: Yuichi Ozawa, Tomohito Oyama
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Publication number: 20220169776Abstract: The objective of the present invention is to provide a liquid composition which is for a fiber reinforced plastic intermediate base material, and which imparts excellent FRP mechanical properties and can suppress voids as much as possible. The liquid composition for a fiber reinforced plastic intermediate base material according to the present invention is characterized by being obtained by mixing (A) and (B). (A): a composition including a compound (a) having at least two isocyanate groups, and (B): a composition which includes (b1) as an essential component and may include (b2) and (b3). (b1): a monoalcohol compound having an ethylenically unsaturated group, (b2): a compound having at least two reactive groups with isocyanate groups , and (b3): a polymerization inhibitor.Type: ApplicationFiled: February 5, 2020Publication date: June 2, 2022Applicant: Japan U-Pica Company, Ltd.Inventors: Tetsuji MOROIWA, Nozomi ISHINE, Hiroki OKADO, Katsunori IRIE, Hideaki FURUKI
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Publication number: 20200231714Abstract: [Problems] An object of the present invention is to provide a crystalline radical polymerizable composition which is excellent in flowability and is easy to handle. [Solution Means] The crystalline radical polymerizable composition for sealing electrical and electronic component according to the present invention is characterized by comprising at least a crystalline radical polymerizable compound, an inorganic filler, a silane coupling agent, and a radical polymerization initiator. In addition, in a preferred embodiment of the crystalline radical polymerizable composition for sealing electrical and electronic component according to the present invention, the crystalline radical polymerizable compound is characterized by comprising one or more selected from unsaturated polyester, epoxy (meth) acrylate, urethane (meth) acrylate, polyester (meth) acrylate, -polyether (meth) acrylate, radical polymerizable monomer and radical polymerizable polymer.Type: ApplicationFiled: February 20, 2018Publication date: July 23, 2020Applicant: Japan U-Pica Company, Ltd.Inventors: Yuichi OZAWA, Tomohito OYAMA
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Publication number: 20190169387Abstract: The purpose of the present invention is to provide a prepreg sheet including a radical-polymerizable resin composition contributing to excellent mechanical properties of a fiber reinforced plastic, excellent curability with storability. The prepreg sheet of the present invention is obtained by infiltrating a radical-polymerizable resin composition into fibers, and is characterized in that the radical-polymerizable resin composition contains at least a urethane (meth) acrylate compound (a) represented by the following chemical formula [Chemical 1]: X?M[n??]Chemical 1] (in the formula, wherein n is within a range from 2 to 100, X is a compound residue having two or more isocyanate groups, and M contains at least formula [Chemical 2]: —N?C?O??[Chemical 2] in the formula [Chemical 3], Q represents a mono alcohol compound residue containing ethylenically unsaturated groups.).Type: ApplicationFiled: March 30, 2017Publication date: June 6, 2019Applicant: Japan U-Pica Company, Ltd.Inventors: Tetsuji MOROIWA, Nozomi ISHINE
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Publication number: 20180272625Abstract: [Objective] The object of the present invention is to provide a fiber reinforced plastic molded article having favorable close contact properties with reinforcing fibers and superior mechanical strength.Type: ApplicationFiled: November 10, 2016Publication date: September 27, 2018Applicant: Japan U-Pica Company, Ltd.Inventors: Tetsuji MOROIWA, Nozomi ISHINE
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Patent number: 9518007Abstract: The present invention provides a thermosetting resin which enables the production of a carbon fiber reinforced plastic having a good workability and excellent mechanical properties by hand lay up (HUP) molding, resin transfer molding (RTM) or vacuum assisted resin transfer molding (VaRTM). The urethane (meth) acrylate compound (A) according to the present invention is an urethane (meth) acrylate produced by reacting a compound having two or more isocyanate groups with a monoalcohol compound containing ethylenically unsaturated groups or by reacting a compound having two or more isocyanate groups with a monoalcohol compound containing ethylenically unsaturated groups and an alcohol compound having two or more hydroxyl groups, said urethane (meth) acrylate compound (A) being characterized by having an isocyanate group and ethylenically unsaturated groups.Type: GrantFiled: January 15, 2014Date of Patent: December 13, 2016Assignee: JAPAN U-PICA COMPANY, LTD.Inventors: Tetsuji Moroiwa, Nozomi Ishine, Hiroshi Hayashi
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Publication number: 20150361035Abstract: The present invention provides a thermosetting resin which enables the production of a carbon fiber reinforced plastic having a good workability and excellent mechanical properties by hand lay up (HUP) molding, resin transfer molding (RTM) or vacuum assisted resin transfer molding (VaRTM). The urethane (meth) acrylate compound (A) according to the present invention is an urethane (meth) acrylate produced by reacting a compound having two or more isocyanate groups with a monoalcohol compound containing ethylenically unsaturated groups or by reacting a compound having two or more isocyanate groups with a monoalcohol compound containing ethylenically unsaturated groups and an alcohol compound having two or more hydroxyl groups, said urethane (meth) acrylate compound (A) being characterized by having an isocyanate group and ethylenically unsaturated groups.Type: ApplicationFiled: January 15, 2014Publication date: December 17, 2015Applicant: JAPAN U-PICA COMPANY, LTD.Inventors: Tetsuji MOROIWA, Nozomi ISHINE, Hiroshi HAYASHI
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Publication number: 20150138778Abstract: The purpose of the present invention is to provide a crystalline unsaturated polyester resin composition which has improved fluidability upon being mixed with an inorganic filler, a white pigment or the like. A crystalline unsaturated polyester resin composition for an LED reflector according to the present invention is a crystalline unsaturated polyester resin composition comprising at least a crystalline unsaturated polyester resin and an inorganic filler, and is characterized in that the crystalline unsaturated polyester resin comprises a crystalline unsaturated polyester and a copolymerizable monomer and/or a copolymerizable prepolymer and the crystalline unsaturated polyester resin composition contains a white pigment. A preferred embodiment of the crystalline unsaturated polyester resin composition for an LED reflector according to the present invention is characterized in that the crystalline unsaturated polyester resin has a solid state in a temperature range that does not exceed 50° C.Type: ApplicationFiled: April 26, 2013Publication date: May 21, 2015Applicant: JAPAN U-PICA COMPANY, LTD.Inventor: Tomohito Oyama
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Patent number: 8828636Abstract: It is an object of the present invention to provide a new alcohol compound, a polyester resin, an unsaturated polyester resin, a resin particle and an electrophotographic toner using the compound capable of using the renewable resources as a part of a raw material. An alcohol compound according to the present invention is characterized by representing the chemical formula [Chemical 1]. Furthermore, the polyester resin or the unsaturated polyester resin according to the present invention, is characterized in that the compound (wherein X is an aliphatic or an aromatic residue, Y is a refined rosin residue, a disproportionated rosin residue or a hydrogenated rosin residue, and n=0 to 1 in the formula.) is an essential component of an alcohol component. Further, the resin particle of the present invention is characterized by comprising the polyester resin.Type: GrantFiled: March 2, 2011Date of Patent: September 9, 2014Assignee: Japan U-Pica Company, Ltd.Inventors: Tetsuji Moroiwa, Nobutaka Yoshida, Hiroshi Aihara, Akira Yamane, Kei Yamasaki, Keiko Taniuchi
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Patent number: 8568949Abstract: A toner for developing an electrostatic charge image which contains a polyester resin as a binder resin is provided. The toner has excellent toner properties including low temperature fixing properties, anti-blocking property and anti-offset property, etc. Also a polyester resin for a toner is provided, which is used in the above-mentioned toner. As the binder resin for toner, a polyester resin comprising (1) an aromatic dicarboxylic acid and (2) a disproportionated rosin as an acid component, and (3) a tri- or more-valent polyhydric alcohol as an alcohol component is used, wherein the molar ratio (3)/(1) of the alcohol component (3) and the acid component (1) is from 1.05 to 1.65 and the molar ratio (2)/(1) of the acid components (2) and (1) is from 0.40 to 2.60.Type: GrantFiled: June 9, 2009Date of Patent: October 29, 2013Assignee: Japan U-Pica Company Ltd.Inventors: Akira Yamane, Tetsuji Moroiwa, Koji Yamamoto
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Publication number: 20130071785Abstract: It is an object of the present invention to provide a new alcohol compound, a polyester resin, an unsaturated polyester resin, a resin particle and an electrophotographic toner using the compound capable of using the renewable resources as a part of a raw material. An alcohol compound according to the present invention is characterized by representing the chemical formula [Chemical 1]. Furthermore, the polyester resin or the unsaturated polyester resin according to the present invention, is characterized in that the compound (wherein X is an aliphatic or an aromatic residue, Y is a refined rosin residue, a disproportionated rosin residue or a hydrogenated rosin residue, and n=0 to 1 in the formula.) is an essential component of an alcohol component. Further, the resin particle of the present invention is characterized by comprising the polyester resin.Type: ApplicationFiled: March 2, 2011Publication date: March 21, 2013Applicant: Japan U-Pica Company, Ltd.Inventors: Tetsuji Moroiwa, Nobutaka Yoshida, Hiroshi Aihara, Akira Yamane, Kei Yamasaki, Keiko Taniuchi
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Publication number: 20110123922Abstract: A toner for developing an electrostatic charge image which contains a polyester resin as a binder resin is provided. The toner has excellent toner properties including low temperature fixing properties, anti-blocking property and anti-offset property, etc. Also a polyester resin for a toner is provided, which is used in the above-mentioned toner. As the binder resin for toner, a polyester resin comprising (1) an aromatic dicarboxylic acid and (2) a disproportionated rosin as an acid component, and (3) a tri- or more-valent polyhydric alcohol as an alcohol component is used, wherein the molar ratio (3)/(1) of the alcohol component (3) and the acid component (1) is from 1.05 to 1.65 and the molar ratio (2)/(1) of the acid components (2) and (1) is from 0.40 to 2.60.Type: ApplicationFiled: June 9, 2009Publication date: May 26, 2011Applicant: Japan U-Pica Company Ltd.Inventors: Akira Yamane, Tetsuji Moroiwa, Koji Yamamoto
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Patent number: 7569320Abstract: A polyester resin for toner, wherein an acid component of the polyester comprises (1) disproportionated rosin and (2) terephthalic acid and/or isophthalic acid, an alcohol component of the polyester comprises (3) glycidyl ester of tertiary fatty acid and (4) an aliphatic diol containing from 2 to 10 carbon atoms, and a cross-linking component of the polyester comprises a polycarboxylic acid having three or more carboxyl groups and/or a polyol having three or more hydroxyl groups, with the molar ratio of the acid component (1) to the acid component (2), (1)/(2), being from 0.2 to 0.6 and the molar ratio of the alcohol component (3) to the alcohol component (4), (3)/(4), being from 0.05 to 0.4. A toner for developing an electrostatic charge image contains the polyester resin for a toner (binder resin), a colorant and a charge control agent. Further, the invention also relates to an image-forming method using the toner for developing an electrostatic charge image.Type: GrantFiled: December 16, 2003Date of Patent: August 4, 2009Assignees: Toyo Ink Mfg. Co., Ltd, Japan U-PICA Company, Ltd.Inventors: Yasushi Nakanishi, Hirofumi Iemura, Akira Yamane, Yoshinori Onose
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Patent number: 6756413Abstract: The present invention relates to an O/W type aqueous dispersion which comprises mixing a radical polymerization type thermosetting resin and water together to uniformly disperse particles of the resin in the aqueous phase; the aqueous dispersion is stable and thixotropic and has excellent workability; moreover, as with a normal radical polymerization type thermosetting resin, the aqueous dispersion can be cured at ambient temperature or with heating in the presence of a curing agent and if necessary an accelerator, and the cured material obtained is a porous cured material having fine particles bound together and fine interconnected pores between the bound particles.Type: GrantFiled: August 8, 2002Date of Patent: June 29, 2004Assignee: Japan U-PICA Company, Ltd.Inventor: Keizo Masawaki