Patents Assigned to MGC Filsheet Co., Ltd.
-
Publication number: 20210016485Abstract: A front panel for on-board liquid crystal displays has a high hardness resin composition (B) on at least one side of a layer containing a resin (A) having a polycarbonate resin (a1). The front panel satisfies the following conditions (i) to (iv): (i) the thickness of the layer containing a high hardness resin composition (B) is 10 to 250 ?m, and the total thickness of the layer containing a resin (A) comprising a polycarbonate resin (a1) and the layer containing a high hardness resin composition (B) is 100 to 3,000 ?m; (ii) the high hardness resin composition (B) consists of any one of specific resin compositions (B1) to (B3); (iii) the retardation of the front panel is 3,000 nm or more; and (iv) the standard deviation of the second derivative of the irregular shape of the hard coat layer having irregularities is 0.1 or more.Type: ApplicationFiled: July 14, 2020Publication date: January 21, 2021Applicants: MITSUBISHI GAS CHEMICAL COMPANY, INC., MGC FILSHEET CO., LTD.Inventors: Hirokazu TAKENAKA, Yasuo OOSE, Takuya GOTO
-
Patent number: 10838238Abstract: 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: GrantFiled: January 22, 2019Date of Patent: November 17, 2020Assignees: MITSUBISHI GAS CHEMICAL COMPANY, INC., MGC FILSHEET CO., LTD.Inventors: Terutaka Tokumaru, Hideaki Kimura, Masayuki Akaki, Kyousuke Nakamura
-
Patent number: 10816699Abstract: The present invention provides a functional sheet including a functional layer provided between protective layers. The functional layer is a polarizing film layer, a photochromic layer, or a combination of the polarizing film layer and the photochromic layer. At least one of the protective layers includes a layer formed of a resin (C) containing a polyester resin (A) obtained as a result of polycondensation of 1,4-cyclohexanedimethanol and 1,4-cyclohexanedicarboxylic acid and an aromatic polycarbonate resin (B), the polyester resin (A) being contained at a content of 10 to 100 parts by mass and the aromatic polycarbonate resin (B) being contained at a content of 0 to 90 parts by mass with respect to 100 parts by mass as a total of the polyester resin (A) and the aromatic polycarbonate resin (B). A lens is provided with such a functional sheet.Type: GrantFiled: December 1, 2015Date of Patent: October 27, 2020Assignees: MITSUBISHI GAS CHEMICAL COMPANY, INC., MGC FILSHEET CO., LTD.Inventors: Kyousuke Nakamura, Takuya Gotou, Hirotaka Tsuruya, Kazuhisa Mitsuhata
-
Publication number: 20200277123Abstract: A package of a heat-bent polarizing sheet for producing an injection-molded polarizing lens and an injection-molded polarizing lens that uses said sheet is provided. The heat-bent polarizing sheet is cumulatively packaged by a non-adhesive isolation film so as to withstand moisture and then stored or transported and can be used in injection molding without performing preliminary drying as a pretreatment of injection molding and without substantial protective-film removal work.Type: ApplicationFiled: September 7, 2018Publication date: September 3, 2020Applicants: WINTEC, INC., MITSUBISHI GAS CHEMICAL COMPANY, INC., MGC FILSHEET CO., LTD.Inventors: Hideaki KIMURA, Masayuki AKAKI, Takashi FUJII
-
Publication number: 20200262110Abstract: Provided is an aromatic polycarbonate resin sheet/film which has excellent bending characteristics and surface smoothness. It is found that a sheet having excellent surface smoothness, which cannot be achieved by conventional sheets, can be obtained by adjusting sheet extrusion conditions for a polycarbonate resin sheet/film into which a reinforcing filler is blended. It is also found that a thermally shaped article having excellent appearance can be obtained by using this sheet in pressure molding or in thermal press molding.Type: ApplicationFiled: May 4, 2020Publication date: August 20, 2020Applicants: MITSUBISHI GAS CHEMICAL COMPANY, INC., MGC FILSHEET CO., LTD.Inventors: Haruhiko KUROKAWA, Hiroki ISHII, Masatoshi NAKASHIMA
-
Patent number: 10737471Abstract: According to the present invention, a synthetic resin laminate comprising two transparent synthetic resin layers (A), two or more functional layers (B) having photochromic properties interposed between the two synthetic resin layers (A), and a transparent resin layer (C) interposed between the two or more functional layers (B), wherein the functional layer (B) is a cured layer comprising a photochromic dye and obtained from a diisocyanate and a polyol can be provided.Type: GrantFiled: March 7, 2017Date of Patent: August 11, 2020Assignees: MITSUBISHI GAS CHEMICAL COMPANY, INC., MGC FILSHEET CO., LTD.Inventors: Katsuyuki Murai, Kyousuke Nakamura, Hideaki Kimura
-
Publication number: 20200247098Abstract: According to an embodiment, provided is a molding resin sheet including: a base material layer containing a polycarbonate resin (a1); a high-hardness resin layer containing a high-hardness resin; and a hard coat layer, wherein the high-hardness resin layer is located between the base material layer and the hard coat layer, the high-hardness resin has a pencil hardness of HB or more, and the glass transition points of the polycarbonate resin (a1) and the high-hardness resin satisfy the following relationship: ?10° C.?(the glass transition point of the high-hardness resin)?(the glass transition point of the polycarbonate resin (a1))?40° C.Type: ApplicationFiled: August 27, 2018Publication date: August 6, 2020Applicants: MITSUBISHI GAS CHEMICAL COMPANY, INC., MGC FILSHEET CO., LTD.Inventors: Atsuhiro TOKITA, Masaki HIRABAYASHI, Masato TAKASAKI
-
Patent number: 10710291Abstract: A front panel for on-board liquid crystal displays has a high hardness resin composition (B) on at least one side of a layer containing a resin (A) having a polycarbonate resin (a1). The front panel satisfies the following conditions (i) to (iv): (i) the thickness of the layer containing a high hardness resin composition (B) is 10 to 250 ?m, and the total thickness of the layer containing a resin (A) comprising a polycarbonate resin (a1) and the layer containing a high hardness resin composition (B) is 100 to 3,000 ?m; (ii) the high hardness resin composition (B) consists of any one of specific resin compositions (B1) to (B3); (iii) the retardation of the front panel is 3,000 nm or more; and (iv) the standard deviation of the second derivative of the irregular shape of the hard coat layer having irregularities is 0.1 or more.Type: GrantFiled: March 2, 2017Date of Patent: July 14, 2020Assignees: MITSUBISHI GAS CHEMICAL COMPANY, INC., MGC FILSHEET CO., LTD.Inventors: Hirokazu Takenaka, Yasuo Oose, Takuya Goto
-
Publication number: 20200207067Abstract: The present invention realizes a card-use resin composition that exhibits beautiful colors and that has high laser-marking coloring properties, a card-use resin sheet formed with the card-use resin composition, and a card. The above problem has been solved by a card-use resin composition containing a laser coloring agent and a thermoplastic resin, wherein the thermoplastic resin contains a polycarbonate resin, and the laser coloring agent contains at least one type of black pigment, the primary particle diameter of the black pigment being 40 to 80 nm, and the amount of the black pigment with respect to the entire mass of the card-use resin composition being 20 to 40 mass ppm.Type: ApplicationFiled: June 12, 2018Publication date: July 2, 2020Applicants: MITSUBISHI GAS CHEMICAL COMPANY, INC., MGC FILSHEET CO., LTD.Inventors: Kentaro SUZUKI, Masahide TAKEDA, Satoshi KANEKO
-
Patent number: 10696818Abstract: The present invention provides a polycarbonate resin composition characterized by containing 73 to 94.5 mass % of a polycarbonate resin (A), 5 to 25 mass % of a phosphorus-based flame retardant (B), and 0.1 to 2 mass % of a fluoropolymer (C), and by having a flow value of 1×0.01 to 10×0.01 cm3/sec at 280° C. The present invention also provides a sheet and a film using the polycarbonate resin composition.Type: GrantFiled: August 29, 2016Date of Patent: June 30, 2020Assignees: MITSUBISHI GAS CHEMICAL COMPANY, INC., MGC FILSHEET CO., LTD.Inventors: Haruhiko Kurokawa, Atsuhiro Tokita, Hiroki Ishii
-
Publication number: 20200174159Abstract: Provided is a functional polyamide sheet in which air bubbles are not generated or are reduced in a polarizing and/or photochromic functional sheet when the polarizing and/or photochromic functional sheet are/is manufactured using a sheet or film formed by a polyamide resin as a protective layer, and a functional polyamide lens using the functional polyamide sheet. Provided are a polyamide functional sheet obtained by disposing a protective layer formed by a transparent plastic sheet or film on at least one surface of a functional layer, which is a polyvinyl alcohol-based polarizing film layer, a photochromic layer, or a combination of these layers, with an adhesive layer being interposed therebetween, in which the protective layer is a sheet or film formed by a polyamide resin, and an oxygen transmission rate at 23° C. and 85% RH is 50 cm3/m2·24 hr·bar or more, and a functional polyamide lens using the polyamide functional sheet.Type: ApplicationFiled: July 5, 2018Publication date: June 4, 2020Applicants: MITSUBISHI GAS CHEMICAL COMPANY, INC., MGC FILSHEET CO., LTD.Inventors: Hideaki KIMURA, Masayuki AKAKI, Kenta NONAKA, Takashi FUJII, Katsuyuki MURAI, Shotaro OHNO
-
Patent number: 10649123Abstract: Provided are: an optical Elm that has a good appearance, small in-plane retardation Re, and large thickness-direction retardation Rth; and a method for producing such an optical film. Also provided is a multilayer optical film that uses the optical film, that exhibits little change in retardation as a result of wavelength, and that has small retardation at low wavelengths. The optical film is obtained by sandwiching a melted resin between a first cooling roll comprising an elastic metal roll and a second cooling roll comprising a non-elastic metal roll and molding said melted resin. The optical film has a good appearance, the absolute value of the in-plane retardation Re thereof is 10 nm or less, and the thickness-direction retardation Rth thereof is 40 nm or more.Type: GrantFiled: July 30, 2015Date of Patent: May 12, 2020Assignees: MITSUBISHI GAS CHEMICAL COMPANY, INC., MGC FILSHEET CO., LTD.Inventors: Osamu Kakinoki, Koji Komuro
-
Patent number: 10564325Abstract: A protective film-attached functional sheet includes a protective film bonded to a functional sheet including aromatic polycarbonate sheets and a functional layer sandwiched between the aromatic polycarbonate sheets, the functional layer being a polyvinyl alcohol polarizing film layer, a photochromic layer, or a combination. The protective film is a polyolefin resin film that includes at least two layers: a base layer formed of a polypropylene having a melting point equal to or higher than a glass transition temperature of the aromatic polycarbonate and an adhesive layer on one surface of the base layer and being a resin composition containing a polyolefin rubber and a polyolefin having a melting point lower than the glass transition temperature but equal to or higher than 15° C. lower than the glass transition temperature; or at least three layers: the aforementioned two layers and an intermediate layer between the base layer and the adhesive layer.Type: GrantFiled: November 18, 2015Date of Patent: February 18, 2020Assignees: MITSUBISHI GAS CHEMICAL COMPANY, INC., MGC FILSHEET CO., LTD.Inventors: Ryuji Yoshida, Toshihiko Takano
-
Publication number: 20200016877Abstract: The present invention enables the achievement of: a resin laminate which has high durability, high heat resistance and excellent easy processability, while maintaining transparency; and a card which comprises a resin laminate. The above-described problem is solved by a resin laminate according to the present invention, which is obtained by laminating a plurality of resin sheets, and wherein the outermost resin sheet that constitutes the outermost layer of the resin laminate contains a polycarbonate resin (A) that has a viscosity average molecular weight of from 30,000 to 60,000 (inclusive).Type: ApplicationFiled: February 26, 2018Publication date: January 16, 2020Applicants: MITSUBISHI GAS CHEMICAL COMPANY, INC., MGC FILSHEET CO., LTD.Inventors: Kentaro SUZUKI, Masahide TAKEDA, Junya ASANO
-
Patent number: 10534199Abstract: 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: GrantFiled: February 19, 2015Date of Patent: January 14, 2020Assignees: MITSUBISHI GAS CHEMICAL COMPANY, INC., MGC FILSHEET CO., LTD.Inventors: Akio Ohkubo, Hideaki Kimura, Masukazu Hirata, Masaki Yagoura
-
Patent number: 10509252Abstract: Provided is a polymer film which can eliminate both moire and glitter and is suitable for use as a diffusion film. The above-mentioned problems are solved with a polymer film, a surface of which has an arithmetic average roughness Ra of 0.63-1.80 ?m, a root mean square roughness Rq of 0.76-2.40 ?m, and an average height Rc of roughness-curve elements of 2.45-7.20 ?m.Type: GrantFiled: June 2, 2016Date of Patent: December 17, 2019Assignees: MITSUBISHI GAS CHEMICAL COMPANY, INC., MGC FILSHEET CO., LTD.Inventors: Takeshi Onishi, Masahide Takeda, Shotaro Ohno, Shohei Takahagi
-
Patent number: 10508191Abstract: The present invention provides: a polycarbonate resin composition which contains 18-75% by mass of (A) a polycarbonate resin having a viscosity average molecular weight of 28,000-60,000, 5-30% by mass of (B) a phosphorus flame retardant, 18-50% by mass of (C) a fibrous or plate-like inorganic filler, and 0.1-2% by mass of (D) a fluoropolymer; and a sheet and a film, each of which uses this polycarbonate resin composition.Type: GrantFiled: August 29, 2016Date of Patent: December 17, 2019Assignees: MITSUBUSHI GAS CHEMICAL COMPANY, INC., MGC FILSHEET CO., LTD.Inventors: Hiroki Ishii, Haruhiko Kurokawa, Atsuhiro Tokita
-
Publication number: 20190299572Abstract: A resin laminate which has excellent warping deformation resistance even under exposure to high temperature and high humidity is produced by layering a thermoplastic resin (B) on at least one surface of a polycarbonate-based resin (A) sheet of which the main component is a polycarbonate resin, the thermoplastic resin (B) containing: a copolymer (b1) comprising 45-85 mass % of an aromatic vinyl monomer unit, 5-50 mass % of an unsaturated dicarboxylic anhydride monomer unit, and 5-35 mass % of an acrylic compound monomer unit; and either a copolymer (b2) comprising 1-30 mass % of an aromatic vinyl monomer unit, 5-45 mass % of an N-substituted maleimide monomer unit, and 25-94 mass % of an acrylic compound monomer unit, or a copolymer (b3) comprising 5-40 mass % of an aromatic vinyl monomer unit, and 1-50 mass % of an unsaturated dicarboxylic anhydride monomer unit, and 45-94 mass % of an acrylic compound monomer unit.Type: ApplicationFiled: February 8, 2017Publication date: October 3, 2019Applicants: MITSUBISHI GAS CHEMICAL COMPANY, INC., MGC FILSHEET CO., LTD.Inventor: Masaki HIRABAYASHI
-
Patent number: 10427335Abstract: The manufacturing device is provided with a first roller and a second roller for molding an uneven-thickness film. The first roller is provided with a truncated-cone-shaped portion and a disc-shaped portion, the diameter of the disc-shaped portion is larger than the diameter of a large-diameter face of the truncated-cone-shaped portion, and the second roller is provided with a column-shaped portion. A thick part is formed in a molded body of the uneven-thickness film between the truncated-cone-shaped portion of the first roller and the column-shaped portion of the second roller, and a thin connecting part is formed in the molded body between the disc-shaped portion of the first roller and the column-shaped portion of the second roller.Type: GrantFiled: November 20, 2014Date of Patent: October 1, 2019Assignees: MITSUBISHI GAS CHEMICAL COMPANY, INC., MGC FILSHEET CO., LTD.Inventor: Reiki Akita
-
Patent number: 10414133Abstract: 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: GrantFiled: May 15, 2013Date of Patent: September 17, 2019Assignees: MITSUBISHI GAS CHEMICAL COMPANY, INC., MGC FILSHEET CO., LTD.Inventors: Kosei Hino, Takeshi Onishi, Osamu Kakinoki, Hidetaka Shimizu, Hirohiko Aikawa, Toshinari Aoki