Patents Assigned to MGC Filsheet Co., Ltd.
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Patent number: 9063276Abstract: Provided is a polarizing lens which is excellent especially in terms of impact resistance, appearance, and prevention of eye strain and which has high precision of the surface shape. The polarizing lens is formed by laminating a sheet of an aromatic polycarbonate through an adhesive layer to each surface of a film having polarizing properties, curving the resultant laminate so as to impart spherical or aspherical surfaces thereto to obtain a polarizing sheet, inserting the polarizing sheet into a mold, and injecting an aromatic polycarbonate, wherein the polarizing sheet is obtained through the laminating so that the stretch axis of one of the aromatic-polycarbonate sheets is perpendicular to the absorption axis of the film having the polarizing properties.Type: GrantFiled: June 9, 2011Date of Patent: June 23, 2015Assignees: MITSUBISHI GAS CHEMICAL COMPANY, INC., MGC FILSHEET CO., LTD.Inventors: Terutaka Tokumaru, Ken Shimomai, Katunori Suzuki, Kyousuke Nakamura, Masaki Yagoura, Akio Ohkubo
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Publication number: 20150160479Abstract: According to the present invention, a functional sheet, comprising a polarizing or photochromic functional layer and protective layers provided on both surfaces of the functional layer can be provided. The protective layers include an aromatic polycarbonate resin sheet or film. At least one of the protective layers is a co-extruded sheet or film including an aromatic polycarbonate resin layer and an acrylic-based resin layer provided on one surface or both surfaces of the aromatic polycarbonate resin layer. At least one surface of the functional sheet is of the acrylic-based resin layer. Also according to the present invention, a lens using such a functional sheet can be provided.Type: ApplicationFiled: February 19, 2015Publication date: June 11, 2015Applicants: MITSUBISHI GAS CHEMICAL COMPANY, INC., MGC FILSHEET CO., LTD.Inventors: Akio OHKUBO, Hideaki KIMURA, Masukazu HIRATA, Masaki YAGOURA
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Publication number: 20150111015Abstract: A synthetic resin laminate is excellent in shape stability in high-temperature high-humidity environments and in surface hardness and usable for a transparent substrate material or protection material. A synthetic resin laminate includes a substrate layer containing a polycarbonate (B); and a resin layer laminated on one or both surfaces of the substrate layer, the resin layer containing a resin (A) that contains a (meth)acrylate copolymer (a1) and a polycarbonate (a2); wherein (a1) is a (meth)acrylate copolymer composed of 5 to 80% by mass of an aromatic (meth)acrylate unit (a11) and 20 to 95% by mass of a methyl methacrylate unit (a12); (a2) is a polycarbonate containing a constituent unit represented by formula [1]; and the ratio of (a1) with respect to the resin (A) is 5 to 55% by mass, and the ratio of (a2) with respect to the resin (A) is 95 to 45% by mass.Type: ApplicationFiled: May 15, 2013Publication date: April 23, 2015Applicants: MITSUBISHI GAS CHEMICAL COMPANY, INC., MGC FILSHEET CO., LTD.Inventors: Kosei Hino, Takeshi Onishi, Osamu Kakinoki, Hidetaka Shimizu, Hirohiko Aikawa, Toshinari Aoki
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Patent number: 8936363Abstract: The present invention relates to a polarizing lens molded by inserting a polarizing sheet bent into a sphere or an asphere after having an aromatic polycarbonate sheet bonded via an adhesive layer to both surfaces of a film with polarized nature into a mold, and injecting aromatic polycarbonate, wherein heat treatment at a temperature not less than a temperature of 50° C. lower than the glass transition point and less than the glass transition point for an appropriate time has been performed after injecting aromatic polycarbonate to approximate a designed value of the lens curvature.Type: GrantFiled: February 11, 2014Date of Patent: January 20, 2015Assignees: Mitsubishi Gas Chemical Company, Inc., MGC Filsheet Co., Ltd.Inventors: Terutaka Tokumaru, Katsunori Suzuki, Ken Shimomai, Masaki Yagoura, Kyousuke Nakamura, Akio Ohkubo
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Publication number: 20140375945Abstract: Provided is a polarizing lens which is excellent in terms of impact resistance, outer appearance and prevention of eye strain and which exhibits little variation in color tone and transmittance during formation. The polarizing lens is formed by stretching a polyvinyl alcohol film and dyeing it with a dichroic dye, bonding an aromatic polycarbonate sheet to both surfaces of the film by means of an adhesive layer, and then inserting a polarizing sheet, bent to have a spherical or aspherical surface, into a mold, and injecting aromatic polycarbonate thereto, wherein the area in which the dichroic dye seeps from the surface of the polyvinyl alcohol film is not more than a quarter of the thickness of the polyvinyl alcohol film.Type: ApplicationFiled: October 1, 2012Publication date: December 25, 2014Applicants: MGC FILSHEET CO., LTD., MITSUBISHI GAS CHEMICAL COMPANY, INC.Inventors: Terutaka Tokumaru, Hideaki Kimura, Masayuki Akaki, Kyousuke Nakamura
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Publication number: 20140293618Abstract: The present invention solves glare of an embossed matte film of a conventional product produced and sold by the applicant of the present application, and provides a light diffusion film and the like having a surface shape of an irregular pattern that significantly suppresses the glare even when an LED light source is used and also maintains the good optical characteristics. The following is believed sufficient for maintaining good optical characteristics of an embossed matte film and also for solving the glare. To maintain the optical characteristics, the surface shape was defined by use of an inclination angle histogram profile of an embossed surface. In order to solve the glare, the size of unit patterns which make up an entire pattern and do not cause glare was defined by use of the value of the average length RSm of the roughness curve element of the embossed surface.Type: ApplicationFiled: October 23, 2012Publication date: October 2, 2014Applicants: MGC FILSHEET CO., LTD., MITSUBISHI GAS CHEMICAL COMPANY, INC.Inventors: Koshi Koide, Kishin Ozawa, Yasutaka Fukunaga
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Publication number: 20140242392Abstract: An acrylic resin composition containing an acrylic resin as a main component and a terminal-modified polycarbonate resin having terminal groups represented by the following formula (1): wherein each of R1 to R2 independently represents an alkylene group having 1-20 carbon atoms, each of R3 to R7 independently represents a hydrogen atom, a fluorine atom, a chlorine atom, a bromine atom, an iodine atom, an alkyl group having 1-9 carbon atoms, an aryl group having 6-12 carbon atoms, an alkenyl group having 2-5 carbon atoms, an alkoxy group having 1-5 carbon atoms or an aralkyl group having 7-17 carbon atoms, and “a” represents an integer of 1 to 1000.Type: ApplicationFiled: May 8, 2014Publication date: August 28, 2014Applicants: MITSUBISHI GAS CHEMICAL COMPANY, INC., MGC Filsheet Co., Ltd.Inventors: Noriyoshi OGAWA, Tatsuya KANAGAWA
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Patent number: 8815373Abstract: The present invention provides a method for manufacturing a laminate, comprising the steps of laminating two or more layers of polycarbonate resin film and/or sheet using a (meth)acrylate-based adhesive composition containing a (A) (meth)acrylate monomer, a (B) meth(acrylate) olygomer, an (C) acrylamide derivative, and a (D) silane compound and/or an (E) organophosphorus compound to form a laminate having a thickness of 0.1 mm to 30 mm; heating the laminate at 130° C. to 185° C. so that a temperature difference between a top surface and a bottom surface of the laminate is within 20° C.; and bending the post-heating laminate into a curved shape having a radius of curvature of 10 mm or greater.Type: GrantFiled: October 16, 2013Date of Patent: August 26, 2014Assignees: Mitsubishi Gas Chemical Company, Inc., MGC Filsheet Co., Ltd.Inventors: Takatoshi Matsumura, Yoshiya Kimura
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Publication number: 20140232983Abstract: Provided is a spherical or aspherical polarized mirrored glasses lens that substantially prevents the appearance of reflections caused by reflection from the mirrored surface, has a high transmittance, and with the use of a colored absorption-polarization film layer, allows arbitrary selection of the color of the field of view of the sunglasses user and the color of the lens as seen by others. A polarized mirrored glasses lens is fabricated, said lens being characterized by having, in order from the light-incidence side, at least a reflection-polarization film layer and an absorption-polarization film layer, and further characterized in that: the transmission axes of said layers are aligned; and the light-incidence side is a convex spherical or aspherical surface.Type: ApplicationFiled: October 1, 2012Publication date: August 21, 2014Applicants: MGC FILSHEET CO., LTD., MITSUBISHI GAS CHEMICAL COMPANY, INC.Inventors: Terutaka Tokumaru, Kazuhisa Mitsuhata
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Patent number: 8790766Abstract: The present invention can provide a polymer film having an Ra (arithmetic average roughness) of 0.5 ?m to 2.5 ?m, an Ry (maximum height) of 3 ?m to 11 ?m, an Rz (ten-point average height) of 3 ?m to 8 ?m, and a light transmittance of 85% or higher. A preferable embodiment of the present invention can provide, at the same time, an optical diffusion function, an improved luminance, a transmittance and the like which are of a sufficient level not realized conventionally. In a still preferable embodiment, Sm (average concave-concave/convex-convex interval) of 90 ?m to 160 ?m and the average inter-local peak interval (S) is 5 ?m to 15 ?m.Type: GrantFiled: December 21, 2007Date of Patent: July 29, 2014Assignees: MGC Filsheet Co., Ltd., Mitsubishi Gas Chemical Company Inc.Inventors: Kenji Kato, Katsushige Hayashi, Jun Yokoyama, Mitsuo Miura, Tsutomu Nara
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Publication number: 20140151911Abstract: The present invention relates to a polarizing lens molded by inserting a polarizing sheet bent into a sphere or an asphere after having an aromatic polycarbonate sheet bonded via an adhesive layer to both surfaces of a film with polarized nature into a mold, and injecting aromatic polycarbonate, wherein heat treatment at a temperature not less than a temperature of 50° C. lower than the glass transition point and less than the glass transition point for an appropriate time has been performed after injecting aromatic polycarbonate to approximate a designed value of the lens curvature.Type: ApplicationFiled: February 11, 2014Publication date: June 5, 2014Applicants: MGC FILSHEET CO., LTD., MITSUBISHI GAS CHEMICAL COMPANY, INC.Inventors: Terutaka TOKUMARU, Katsunori Suzuki, Ken Shimomai, Masaki Yagoura, Kyousuke Nakamura, Akio Ohkubo
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Publication number: 20140044927Abstract: The present invention provides a method for manufacturing a laminate, comprising the steps of laminating two or more layers of polycarbonate resin film and/or sheet using a (meth)acrylate-based adhesive composition containing a (A) (meth)acrylate monomer, a (B) meth(acrylate) olygomer, an (C) acrylamide derivative, and a (D) silane compound and/or an (E) organophosphorus compound to form a laminate having a thickness of 0.1 mm to 30 mm; heating the laminate at 130° C. to 185° C. so that a temperature difference between a top surface and a bottom surface of the laminate is within 20° C.; and bending the post-heating laminate into a curved shape having a radius of curvature of 10 mm or greater.Type: ApplicationFiled: October 16, 2013Publication date: February 13, 2014Applicants: MGC FILSHEET CO., LTD., MITSUBISHI GAS CHEMICAL COMPANY, INC.Inventors: Takatoshi Matsumura, Yoshiya Kimura
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Patent number: 8585860Abstract: The present invention provides a method for manufacturing a laminate, comprising the steps of laminating two or more layers of polycarbonate resin film and/or sheet using a (meth)acrylate-based adhesive composition containing a (A) (meth)acrylate monomer, a (B) meth(acrylate) olygomer, an (C) acrylamide derivative, and a (D) silane compound and/or an (E) organophosphorus compound to form a laminate having a thickness of 0.1 mm to 30 mm; heating the laminate at 130° C. to 185° C. so that a temperature difference between a top surface and a bottom surface of the laminate is within 20° C.; and bending the post-heating laminate into a curved shape having a radius of curvature of 10 mm or greater.Type: GrantFiled: May 7, 2009Date of Patent: November 19, 2013Assignees: Mitsubishi Gas Chemical Company, Inc., MGC Filsheet Co., Ltd.Inventors: Takatoshi Matsumura, Yoshiya Kimura
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Publication number: 20130272020Abstract: The problem is to provide a front plate of a TN liquid crystal display device capable of reducing occurrence of color unevenness caused by retardation of a polycarbonate resin sheet, even when the liquid crystal panel is observed through polarizing glasses or liquid crystal shutter glasses for 3D, while having excellent impact resistance, heat resistance and transparency. The solution means are that the direction of the slow axis or the fast axis of a polycarbonate resin sheet is parallel to the lengthwise direction of a TN liquid crystal panel, and that retardation is not less than 5000 nm.Type: ApplicationFiled: September 22, 2011Publication date: October 17, 2013Applicants: MGC FILSHEET CO., LTD., MITSUBISHI GAS CHEMICAL COMPANY, INC.Inventors: Koshi Koide, Osamu Kakinoki
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Publication number: 20130251919Abstract: The problem is to provide a front plate of a TN liquid crystal panel capable of inhibiting occurrence of color unevenness caused by retardation of a polycarbonate resin sheet, even when a liquid crystal panel is observed through polarizing glasses or liquid crystal shutter glasses for 3D, while having excellent impact resistance, heat resistance and transparency. The solution means is the front plate 1 of a TN liquid crystal panel provided with the polycarbonate resin sheet 10, wherein the direction of the slow axis X or the fast axis Y of the polycarbonate resin sheet 10 is inclined by 45° with respect to the lengthwise direction L of a liquid crystal panel.Type: ApplicationFiled: August 8, 2011Publication date: September 26, 2013Applicants: MGC FILSHEET CO., LTD., MITSUBISHI GAS CHEMICAL COMPANY, INC.Inventors: Koshi Koide, Osamu Kakinoki
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Patent number: 8451540Abstract: Disclosed is a film suitable for improvement of luminance, contrast and view angle of a liquid crystal display. Specifically disclosed is a retardation film having a thickness of 30-500 ?m, a light transmittance of not less than 85%, and an Nz factor of not less than 10.Type: GrantFiled: September 11, 2007Date of Patent: May 28, 2013Assignees: MGC Filsheet Co., Ltd., Mitsubishi Gas Chemical Company, Inc.Inventors: Kenji Kato, Katsushige Hayashi, Noriyuki Kato, Haruaki Eto, Syoichi Nito
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Publication number: 20130070196Abstract: Provided is a polarizing lens which is excellent especially in terms of impact resistance, appearance, and prevention of eye strain and which has high precision of the surface shape. The polarizing lens is formed by laminating a sheet of an aromatic polycarbonate through an adhesive layer to each surface of a film having polarizing properties, curving the resultant laminate so as to impart spherical or aspherical surfaces thereto to obtain a polarizing sheet, inserting the polarizing sheet into a mold, and injecting an aromatic polycarbonate, wherein the polarizing sheet is obtained through the laminating so that the stretch axis of one of the aromatic-polycarbonate sheets is perpendicular to the absorption axis of the film having the polarizing properties.Type: ApplicationFiled: June 9, 2011Publication date: March 21, 2013Applicants: MGC FILSHEET CO., LTD., MITSUBISHI GAS CHEMICAL COMPANY, INC.Inventors: Terutaka Tokumaru, Ken Shimomai, Katunori Suzuki, Kyousuke Nakamura, Masaki Yagoura, Akio Ohkubo
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Publication number: 20130059158Abstract: A synthetic resin laminate for use for transparent substrate materials and transparent protective materials is excellent in interlayer adhesiveness, form stability in high-temperature and high humidity environments, surface hardness and impact resistance. The synthetic resin laminate has a vinyl copolymer resin (A) layer and a polycarbonate resin (B) layer, wherein layer (A) is directly laminated on one surface of layer (B), and in which (A) contains a (meth)acrylate structural unit (a) represented by a specific formula and an aliphatic vinyl structural unit (b) represented by a specific formula, the total proportion of the (meth)acrylate structural unit (a) and the aliphatic vinyl structural unit (b) is from 90 to 100 mol % relative to the total of all the structural units in (A), and the proportion of the (meth)acrylate structural unit (a) is from 65 to 80 mol % relative to the total of all the structural units in (A).Type: ApplicationFiled: May 17, 2011Publication date: March 7, 2013Applicants: MGC FILSHEET CO., LTD., MITSUBISHI GAS CHEMICAL COMPANY, INC.Inventors: Hiroki Oguro, Nobuyuki Koike, Yoshio Aoki, Kazuya Sato, Toshinari Aoki
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Publication number: 20130010253Abstract: The present invention relates to a polarizing lens molded by inserting a polarizing sheet bent into a sphere or an asphere after having an aromatic polycarbonate sheet bonded via an adhesive layer to both surfaces of a film with polarized nature into a mold, and injecting aromatic polycarbonate, wherein heat treatment at a temperature not less than a temperature of 50° C. lower than the glass transition point and less than the glass transition point for an appropriate time has been performed after injecting aromatic polycarbonate to approximate a designed value of the lens curvature.Type: ApplicationFiled: February 22, 2011Publication date: January 10, 2013Applicants: MGC Filsheet Co., Ltd., Mitsubishi Gas Chemical Company, Inc.Inventors: Terutaka Tokumaru, Katsunori Suzuki, Ken Shimomai, Masaki Yagoura, Kyousuke Nakamura, Akio Ohkubo
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Publication number: 20120206689Abstract: According to the present invention, a functional sheet, comprising a polarizing or photochromic functional layer and protective layers provided on both surfaces of the functional layer can be provided. The protective layers include an aromatic polycarbonate resin sheet or film. At least one of the protective layers is a co-extruded sheet or film including an aromatic polycarbonate resin layer and an acrylic-based resin layer provided on one surface or both surfaces of the aromatic polycarbonate resin layer. At least one surface of the functional sheet is of the acrylic-based resin layer. Also according to the present invention, a lens using such a functional sheet can be provided.Type: ApplicationFiled: October 20, 2010Publication date: August 16, 2012Applicants: MGC FILSHEET CO., LTD., MITSUBISHI GAS CHEMICAL COMPANY, INC.Inventors: Akio Ohkubo, Hideaki Kimura, Masukazu Hirata, Masaki Yagoura