Patents by Inventor Masashi Mamino
Masashi Mamino 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: 20230151197Abstract: Provided is a halogen-free resin composition including a polyolefin resin, containing a phosphorus compound in an amount of 0.05 to 2.5 mass % as a phosphorus content; a NOR-type hindered amine in an amount of 0.05 to 5 mass %; and an inorganic filler in an amount of 3 to 50 mass %, respectively, with respect to the total amount of the resin composition, wherein a DTA (Differential Thermal Analysis) curve obtained by differential thermal analysis of the inorganic filler has an endothermic portion in a temperature range of 180 to 500° C.; and in the inorganic filler, a ratio value of a number of particles having a maximum diameter of 300 ?m or more to a number of particles having a maximum diameter of 100 ?m or more is ? or less, or there are no particles having a maximum diameter of 100 ?m or more.Type: ApplicationFiled: November 4, 2022Publication date: May 18, 2023Applicant: KONICA MINOLTA, INC.Inventors: Yo NAKAJIMA, Masashi MAMINO, Takeshi KOJIMA, Yuuki NAGAI
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Publication number: 20220389196Abstract: Provided is a resin composition for injection molding including a polyolefin resin, containing: at least one selected from the group consisting of aluminum hydroxide, magnesium hydroxide and a phosphorus compound in an amount of 10 to 60 mass %; a NOR-type hindered amine compound in an amount of 0.05 to 5 mass %; and a fibrous filler having an aspect ratio of 10 or more in an amount of 1 to 20 mass %, respectively, relative to the total amount of the resin composition, wherein a phosphorous content is 5 mass % or less relative to the total amount of the resin composition.Type: ApplicationFiled: May 26, 2022Publication date: December 8, 2022Inventors: Takeshi KOJIMA, Masashi MAMINO, Yuuki NAGAI, Yo NAKAJIMA
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Publication number: 20210317292Abstract: Provided is a thermoplastic resin composition containing a thermoplastic resin A, a hard filler B and a compatibilizer C, wherein the hard filler B contains a hard filler B1 having an average particle diameter in the range of 0.7 to 40 ?m and a hard filler B2 having an average particle diameter in the range of 0.01 to 0.5 ?m, the compatibilizer C at least adheres to a surface of the hard filler B1, and a ratio WB1/WB2 is 1.5 or more, when WB1 and WB2 are adhesion masses of the compatibilizer C adhered to the surfaces of the hard filler B1 and the hard filler B2, respectively, and WB1 and WB2 each are measured per unit cross-sectional area.Type: ApplicationFiled: March 15, 2021Publication date: October 14, 2021Inventors: Yo NAKAJIMA, Yuuki NAGAI, Masashi MAMINO, Takeshi KOJIMA
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Publication number: 20200255658Abstract: Provided is a resin composition containing a polycarbonate, a glass fiber, and an olefin-acrylate copolymer or an olefin-acrylic acid copolymer, wherein a mass ratio value (GF/OA) of a content of the glass fiber (GF) to a content of the olefin-acrylate copolymer or the olefin-acrylic acid copolymer (OA) is in the range of 1.0 to 6.0.Type: ApplicationFiled: December 13, 2019Publication date: August 13, 2020Inventors: Kosuke NAKAMURA, Masashi MAMINO, Yo NAKAJIMA
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Patent number: 9994708Abstract: A method for producing a thermoplastic resin composition includes melt-blending 50 to 80 parts by mass of a crystalline polyester resin and 20 to 50 parts by mass of an amorphous polyester resin with an extruder, thereby producing a first polyester resin compound. The method further includes melt-blending 90 to 99 parts by mass of the crystalline polyester resin and 1 to 10 parts by mass of a styrene-acrylonitrile-glycidyl methacrylate terpolymer with the extruder or a different extruder, thereby producing a second polyester resin compound. The method further includes compounding 1 to 10 parts by mass of the first polyester resin compound, 1 to 10 parts by mass of the second polyester resin compound, and respective predetermined amounts of a polycarbonate resin, a flame retardant, an antidrip agent, an antioxidant, a lubricant and a toughening agent.Type: GrantFiled: March 8, 2016Date of Patent: June 12, 2018Assignees: KONICA MINOLTA, INC., SHANGHAI KUMHOSUNNY PLASTICS CO., LTD.Inventors: Masashi Mamino, Keita Miyazaki, Ryuji Kitani, Minqi Xin, Minghua Luo, Qiang Li, Wenqiang Li, Lei Gao
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Patent number: 9796847Abstract: Provided is a thermoplastic resin composition having high flame resistance, high fluidity during injection molding, and improved impact resistance in a molded article. To provide a method for producing a thermoplastic resin composition, the method including a step (1) of obtaining a polyester resin mixture by melt-kneading a crystalline terephthalate-based polyester resin, and a polyester resin A including at least one kind selected from the group consisting of isophthalic acid, orthophthalic acid, naphthalenedicarboxylic acid, anthracene dicarboxylic acid and pyridine dicarboxylic acid as an aromatic dicarboxylic acid component with an extruder, and a step (2) of mixing the polyester resin mixture, a polycarbonate resin, a flame retardant and a toughening agent.Type: GrantFiled: May 18, 2015Date of Patent: October 24, 2017Assignee: KONICA MINOLTA, INC.Inventors: Yo Nakajima, Masashi Mamino, Yiqiang Yu, Ryuji Kitani
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Publication number: 20160280911Abstract: A method for producing a thermoplastic resin composition includes melt-blending 50 to 80 parts by mass of a crystalline polyester resin and 20 to 50 parts by mass of an amorphous polyester resin with an extruder, thereby producing a first polyester resin compound. The method further includes melt-blending 90 to 99 parts by mass of the crystalline polyester resin and 1 to 10 parts by mass of a styrene-acrylonitrile-glycidyl methacrylate terpolymer with the extruder or a different extruder, thereby producing a second polyester resin compound. The method further includes compounding 1 to 10 parts by mass of the first polyester resin compound, 1 to 10 parts by mass of the second polyester resin compound, and respective predetermined amounts of a polycarbonate resin, a flame retardant, an antidrip agent, an antioxidant, a lubricant and a toughening agent.Type: ApplicationFiled: March 8, 2016Publication date: September 29, 2016Inventors: Masashi MAMINO, Keita MIYAZAKI, Ryuji KITANI, Minqi XIN, Minghua LUO, Qiang LI, Wenqiang LI, Lei GAO
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Patent number: 9353259Abstract: Provided is a thermoplastic resin composition having high flame resistance and high fluidity during injection molding, and improved impact resistance in a molded article. A method for producing a thermoplastic resin composition, the method including the step (1) of obtaining a polyester resin mixture by melt-kneading 50 to 80 parts by weight of crystalline polyester resin and 20 to 50 parts by weight of amorphous polyester resin with an extruder, and the step (2) of mixing the polyester resin mixture, a polycarbonate resin, a flame retardant, a dripping inhibitor and a toughening agent, wherein the cylinder temperature of the extruder is 250 to 280° C.Type: GrantFiled: November 13, 2014Date of Patent: May 31, 2016Assignee: KONICA MINOLTA, INC.Inventors: Yiqiang Yu, Masashi Mamino, Ryuji Kitani
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Publication number: 20150337131Abstract: Provided is a thermoplastic resin composition having high flame resistance, high fluidity during injection molding, and improved impact resistance in a molded article. To provide a method for producing a thermoplastic resin composition, the method including a step (1) of obtaining a polyester resin mixture by melt-kneading a crystalline terephthalate-based polyester resin, and a polyester resin A including at least one kind selected from the group consisting of isophthalic acid, orthophthalic acid, naphthalenedicarboxylic acid, anthracene dicarboxylic acid and pyridine dicarboxylic acid as an aromatic dicarboxylic acid component with an extruder, and a step (2) of mixing the polyester resin mixture, a polycarbonate resin, a flame retardant and a toughening agent.Type: ApplicationFiled: May 18, 2015Publication date: November 26, 2015Inventors: Yo NAKAJIMA, Masashi Mamino, Yiqiang Yu, Ryuji Kitani
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Publication number: 20150141560Abstract: Provided is a thermoplastic resin composition having high flame resistance and high fluidity during injection molding, and improved impact resistance in a molded article. A method for producing a thermoplastic resin composition, the method including the step (1) of obtaining a polyester resin mixture by melt-kneading 50 to 80 parts by weight of crystalline polyester resin and 20 to 50 parts by weight of amorphous polyester resin with an extruder, and the step (2) of mixing the polyester resin mixture, a polycarbonate resin, a flame retardant, a dripping inhibitor and a toughening agent, wherein the cylinder temperature of the extruder is 250 to 280° C.Type: ApplicationFiled: November 13, 2014Publication date: May 21, 2015Inventors: Yiqiang YU, Masashi Mamino, Ryuji Kitani
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Publication number: 20140371363Abstract: A thermoplastic resin composition having a high flowability during the injection molding, which suppresses generation of burning, silver and the like in a molded article, is provided as an injection molding material. A thermoplastic resin composition containing at least a polycarbonate resin, a polyester resin, and a lubricant, wherein the lubricant contains a compound represented by the following General Formula (1) or (2) is provided.Type: ApplicationFiled: June 5, 2014Publication date: December 18, 2014Inventors: Yuka NAKAMURA, Ryuji KITANI, Masashi MAMINO, Shinichi HADEHARA
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Patent number: 8293181Abstract: Provided is a tubular flow reactor containing: a cylindrical channel; a mixing shaft which is concentric with the cylindrical channel; and a mixing blade attached to the mixing shaft, wherein the tubular flow reactor satisfy the following requirements: t<2C and t/2C<A/C?1, provided that C is a radius of the mixing shaft, t is a thickness of the mixing blade; A is a distance between a mixing blade plane B located at a forward position in a rotating direction of the mixing blade and a plane S passing through the center of the mixing shaft in a shaft direction, when plane B and plane S are parallel; and the mixing blade plane B is located at a more forward position in the rotating direction than the plane S.Type: GrantFiled: June 16, 2010Date of Patent: October 23, 2012Assignee: Konica Minolta Business Technologies, Inc.Inventors: Yasuharu Saita, Ryuji Kitani, Masashi Mamino
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Publication number: 20120235327Abstract: Disclosed are a recycled resin manufacturing process and a recycled resin, the process comprising the steps of sorting a molded waste resin product, pulverizing the sorted molded waste resin product into resin flakes, washing the resin flakes, separating the washed resin flakes to remove different kinds of resins, drying the separated resin flakes, classifying the dried resin flakes to remove foreign matter deposited on the flakes, the classifying being carried out employing a classifying apparatus comprising a classifying section and provided therein, a physical field application device having an airflow force field and another physical field other than the airflow force field, and pelletizing the classified resin flakes, wherein the recycled resin has an oligomer content of not more than 1% by mass.Type: ApplicationFiled: March 5, 2012Publication date: September 20, 2012Applicant: KONICA MINOLTA BUSINESS TECHNOLOGIES, INC.Inventors: Yasuo KURACHI, Akira OHIRA, Ryuji KITANI, Yasuharu SAITA, Masashi MAMINO
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Publication number: 20120095129Abstract: Disclosed is a resin composition comprising (A) a polyester resin or a polycarbonate resin, (B) a polyethylene resin, (C) an aromatic compound other than the polyester resin and the polycarbonate resin, the aromatic compound having a residual carbon rate of not less than 20% by mass, and (D) a flame retardant, wherein the polyethylene resin is dispersed as crystal particles in the resin composition, and the content of the polyethylene resin crystal particles having a major axis diameter of 0.1 to 10 ?m and an aspect ratio of 1 to 10 is not less than 60% by number based on the total polyethylene resin crystal particle number.Type: ApplicationFiled: October 7, 2011Publication date: April 19, 2012Applicant: KONICA MINOLTA BUSINESS TECHNOLOGIES, INC.Inventors: Masashi MAMINO, Yasuo KURACHI, Ryuji KITANI, Yasuharu SAITA
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Patent number: 8148477Abstract: In the present invention, a tubular flow reactor can maintain a plug flow property even though the tubular flow reactor is downsized, and provided is the tubular flow reactor with which uniform resin fine particles exhibiting a narrow particle size distribution and a narrow molecular weight distribution can be prepared when the tubular flow reactor is used for preparation of the resin fine particle via emulsion polymerization or the like. Disclosed is a tubular flow reactor possessing a stirring blade and a cylindrical channel, wherein a ratio d/D is 0.3-0.9 when a diameter of the stirring blade is represented by d and an inner diameter of the cylindrical channel is represented by D, and a ratio Lb/La is 0.80-0.99 when a length of the stirring blade is represented by Lb and a length of the cylindrical channel is represented by La.Type: GrantFiled: March 2, 2009Date of Patent: April 3, 2012Assignee: Konica Minolta Business Technologies, Inc.Inventors: Yasuharu Saita, Masashi Mamino
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Publication number: 20110040049Abstract: In the present invention, a tubular flow reactor can maintain a plug flow property even though the tubular flow reactor is downsized, and provided is the tubular flow reactor with which uniform resin fine particles exhibiting a narrow particle size distribution and a narrow molecular weight distribution can be prepared when the tubular flow reactor is used for preparation of the resin fine particle via emulsion polymerization or the like. Disclosed is a tubular flow reactor possessing a stirring blade and a cylindrical channel, wherein a ratio d/D is 0.3-0.9 when a diameter of the stirring blade is represented by d and an inner diameter of the cylindrical channel is represented by D, and a ratio Lb/La is 0.80-0.99 when a length of the stirring blade is represented by Lb and a length of the cylindrical channel is represented by La.Type: ApplicationFiled: March 2, 2009Publication date: February 17, 2011Applicant: KONICA MINOLTA BUSINESS TECHNOLOGIES, INC.Inventors: Yasuharu Saita, Masashi Mamino
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Publication number: 20100331488Abstract: Provided is a tubular flow reactor containing: a cylindrical channel; a mixing shaft which is concentric with the cylindrical channel; and a mixing blade attached to the mixing shaft, wherein the tubular flow reactor satisfy the following requirements: t<2C and t/2C<A/C?1, provided that C is a radius of the mixing shaft, t is a thickness of the mixing blade; A is a distance between a mixing blade plane B located at a forward position in a rotating direction of the mixing blade and a plane S passing through the center of the mixing shaft in a shaft direction, when plane B and plane S are parallel; and the mixing blade plane B is located at a more forward position in the rotating direction than the plane S.Type: ApplicationFiled: June 16, 2010Publication date: December 30, 2010Applicant: KONICA MINOLTA BUSINESS TECHNOLOGIES, INC.Inventors: Yasuharu SAITA, Ryuji KITANI, Masashi MAMINO
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Publication number: 20090036603Abstract: Disclosed is a method for continuously producing polymer resin particles, including the steps of: introducing a mixed solution of a polymerizable monomer and a chain transfer agent into an aqueous solution of a surface active agent and dispersing a resulting mixture via a mechanical dispersion apparatus to obtain an oil droplet dispersion containing oil droplets exhibiting a median size (D50) of 50 nm-500 ?m; feeding the oil droplet dispersion and a solution of a polymerization initiator into a tubular polymerization reactor; polymerizing the polymerizable monomer in the reactor to produce polymer resin particles, wherein the chain transfer agent exhibits a chain transfer constant (Cx) of 1.9-17.1, and the mixed solution of the polymerizable monomer and the polymerization initiator are continuously fed into the reactor and are kept in a plug flow condition in the reactor so as to be polymerized to produce the polymer resin particles.Type: ApplicationFiled: July 7, 2008Publication date: February 5, 2009Applicant: KONICA MINOLTA BUSINESS TECHNOLOGIES, INC.Inventors: Yasuharu Saita, Kazuya Isobe, Masashi Mamino