Patents Assigned to Teijin Chemicals, Ltd.
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Patent number: 7643104Abstract: This invention relates to a foamed resin sheet containing closed-cells which have a specific average diameter and a specific volume ratio. The foamed resin sheet of this invention is excellent in light reflectance or light transmittance to visible light and is also excellent in light diffusing capability, and in particular it is suitable as a light reflective plate or light diffusing plate to be incorporated and used in a direct backlight unit for a large-screen liquid crystal display or a 15- to 39-inch large-screen liquid crystal television set. The industrial effect that this invention produces is remarkable.Type: GrantFiled: July 7, 2006Date of Patent: January 5, 2010Assignee: Teijin Chemicals, Ltd.Inventors: Shigemaru Komatsubara, Toru Horiguchi
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Patent number: 7591505Abstract: A window structure in which a metal frame is firmly bonded to a sheet material comprising an aromatic polycarbonate resin and which has wet heat resistance and a window member for the structure are provided. The sheet window member comprises: A: a sheet material (A) comprising an aromatic polycarbonate resin, B: a frame member (B) laminated along the periphery of one surface of the sheet material (A), and C: a rubber-like buffer layer (C) formed on the surface of the frame member (B), wherein the frame member (B) is formed from a resin composition comprising the following (i) to (iii): (i) 50 to 90 parts by weight of aromatic polycarbonate resin (B-1), (ii) 10 to 50 parts by weight of polyethylene terephthalate resin (B-2), and (iii) 0 to 50 parts by weight of fibrous filler (B-3) based on 100 parts by weight of the total of(B-1) and (B-2).Type: GrantFiled: May 10, 2004Date of Patent: September 22, 2009Assignee: Teijin Chemicals, Ltd.Inventors: Tomomitsu Onizawa, Toshiaki Hotaka
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Publication number: 20090186168Abstract: A polycarbonate resin film which has an average thickness of 10 to 150 ?m, a thickness nonuniformity of 2% or less, a retardation R(589) in the plane of the film measured at a wavelength of 589 nm of 12 nm or less, a retardation Rth(589) in the thickness direction of the film measured at a wavelength of 589 nm of 35 nm or less and is used for optical purposes.Type: ApplicationFiled: December 27, 2006Publication date: July 23, 2009Applicant: TEIJIN CHEMICALS, LTD.Inventors: Hideaki Nitta, Masahiro Murakami, Kunio Hatanaka, Takatsune Yanagida, Hironobu Katoh, Kinji Hasegawa
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Publication number: 20090103003Abstract: This invention relates to a foamed resin sheet containing closed-cells which have a specific average diameter and a specific volume ratio. The foamed resin sheet of this invention is excellent in light reflectance or light transmittance to visible light and is also excellent in light diffusing capability, and in particular it is suitable as a light reflective plate or light diffusing plate to be incorporated and used in a direct backlight unit for a large-screen liquid crystal display or a 15- to 39-inch large-screen liquid crystal television set. The industrial effect that this invention produces is remarkable.Type: ApplicationFiled: July 7, 2006Publication date: April 23, 2009Applicant: TEIJIN CHEMICALS LTD.Inventors: Shigemaru Komatsubara, Toru Horiguchi
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Patent number: 7473723Abstract: A spectacles lens and an optical transparent molded article are provided that are formed from a polycarbonate resin composition comprising: (1) 100 parts by weight of polycarbonate resin (A), (2) 0.05 to 0.5 parts by weight of at least one ultraviolet absorber (B) selected from the group consisting of 2-(2?-hydroxy-5?-methylphenyl)benzotriazole (B-1) and 2-(2?-hydroxy-5?-tert-octylphenyl)benzotriazole (B-2), (3) 0.01 to 0.3 parts by weight of at least one ultraviolet absorber (C) selected from the group consisting of 2-(3-tert-butyl-5-methyl-2-hydroxyphenyl)-5-chlorobenzotriazole (C-1), 2,2?-methylenebis[4-(1,1,3,3-tetramethylbutyl)-6-(2H-benzotriazole) -2-ylphenol] (C-2) and 2-[2-hydroxy-3,5-bis(?,?-dimethylbenzyl)phenyl]-2H-benzotriazole (C-3), and (4) 0.0005 to 0.1 parts by weight of lactone compound having a specific structure.Type: GrantFiled: January 19, 2005Date of Patent: January 6, 2009Assignee: Teijin Chemicals, Ltd.Inventors: Keizo Ikari, Jiro Ariki
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Patent number: 7381763Abstract: A flame retardant aromatic polycarbonate resin composition comprising: (A) an aromatic polycarbonate resin (component A); (B) an acrylonitrile-styrene copolymer (component B); (C) inorganic fillers (components C); (D) an organic phosphorus compound-based flame retardant (component D); and (E) a fluorine-containing anti-dripping agent (component E), the amounts of the above components are specific and particularly the components C consist of (C1) mica and (C2) talc and/or wollastonite in a specific ratio, and a molded article formed from the resin composition. According to the present invention, there are provided a resin composition which has excellent mechanical properties, flame retardancy and dimensional stability, is light in weight and rarely wears away a mold and a molded article of the resin composition.Type: GrantFiled: November 21, 2005Date of Patent: June 3, 2008Assignee: Teijin Chemicals, Ltd.Inventor: Seiji Kikuchi
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Patent number: 7285332Abstract: A wound laminate obtained by laminating a plastic film composed of an aromatic polycarbonate comprising bisphenol A as an aromatic dihydroxy component, and a protective film composed of an aromatic polyester, using an intervening adhesive having a weak adhesive strength of 3-50 gf (0.0294-0.49 N), and winding the laminate. The wound laminate is used as a transparent protective layer (protective film) for an optical disk to fabricate a film surface side-incident optical disk.Type: GrantFiled: July 2, 2002Date of Patent: October 23, 2007Assignees: Teijin Chemicals Ltd., Sony CorporationInventors: Masahiro Hosoi, Kazuo Yahata, Junichi Shibata, Takeshi Yamasaki, Tomomi Yukumoto
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Patent number: 7244804Abstract: There are provided a polycarbonate copolymer (A) which has excellent light resistance and heat resistance and comprises an aromatic dihydroxy component comprising 5 to 95 mol % of fluorene-skeleton-containing dihydroxy compound (1) having a specific structure and 95 to 5 mol % of ordinary bisphenol type dihydroxy compound (2), the content of fluorene-9-one in the copolymer being not higher than 15 ppm; and a polycarbonate composition comprising 0.01 to 5 parts by weight of ultraviolet absorber (B) based on 100 parts by weight of the copolymer (A), and the composition comprising the copolymer.Type: GrantFiled: November 13, 2003Date of Patent: July 17, 2007Assignee: Teijin Chemicals, Ltd.Inventors: Koki Ikeda, Toshimasa Tokuda, Hiroshi Shuto, Manabu Matsui, Toshiyuki Miyake, Kazushi Tando
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Patent number: 7241825Abstract: The object of the present invention is to provide a polycarbonate resin composition which has excellent transparency and durability against molding heat, which gives a molded article having an excellent mold release property, reduced strains, improved cracking resistance and, preferably, weatherability, and which is particularly suitable for a transparent member for a vehicle, pellets thereof and a molded article thereof, and the present invention provides a polycarbonate resin composition obtained by blending 100 parts by weight of a polycarbonate resin (Component A) and 0.005 to 2 parts by weight of a full ester (Component B) from an aliphatic polyhydric alcohol having 4 to 8 hydroxyl groups and 5 to 30 carbon atoms and an aliphatic carboxylic acid having 10 to 22 carbon atoms, said Component B having a 5% weight loss temperature, measured by TGA (thermogravimetric analysis), of 250 to 360° C. and having an acid value of 4 to 20, pellets thereof and a molded article thereof.Type: GrantFiled: May 1, 2003Date of Patent: July 10, 2007Assignee: Teijin Chemicals, Ltd.Inventors: Takashi Koga, Mitsuhiro Takeo, Daisuke Takahashi
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Patent number: 7205375Abstract: An optical disk substrate and a light guide plate which are formed from a resin composition comprising 0.1 to 20 parts by weight of compound represented by the following formula (I): based on 100 parts by weight of polycarbonate resin. There can be provided an optical disk substrate formed from the resin composition of the present invention, particularly an optical disk substrate which allows the shape of a stamper to be transferred thereon with high precision and hardly undergoes warpage caused by environmental changes as a high density recording medium, and a light guide plate which has little uneven brightness and hardly undergoes warpage.Type: GrantFiled: April 8, 2003Date of Patent: April 17, 2007Assignee: Teijin Chemicals, Ltd.Inventors: Shintaro Nishida, Kuniyuki Hayashi, Hideyuki Tsunemori
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Patent number: 7189796Abstract: An object of the present invention is to provide an aromatic polycarbonate resin composition having good rigidity and good hydrolysis resistance. The present invention is an aromatic polycarbonate resin composition comprising: (A) 100 parts by weight of aromatic polycarbonate (component A) (B) 0.1 to 20 parts by weight of layer silicate (component B) having 50 to 200 milliequivalents/100 g of cation exchange capacity and ion-exchanged by an organic onium ion represented by the following general formula (I): (wherein M represents a nitrogen atom or a phosphorus atom, R1 and R2 represent an alkyl group having 6 to 16 carbon atoms and may be the same as or different from each other, and R3 and R4 represent an alkyl group having 1 to 4 carbon atoms and may be the same as or different from each other), (C) 0.1 to 50 parts by weight of compound (component C) having an affinity for the component A and having a hydrophilic component, and (D) 0.Type: GrantFiled: October 29, 2003Date of Patent: March 13, 2007Assignee: Teijin Chemicals, Ltd.Inventors: Masaki Mitsunaga, Katsuhiko Hironaka
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Patent number: 7169837Abstract: A flame retardant resin composition comprising: (A) 100 parts by weight of a resin component (component a) containing at least 50% by weight of a high impact polystyrene, and (B) 1 to 50 parts by weight of a phosphorous-containing compound (component b) represented by the following general formula (I): wherein A and A? are the same or different and represent —OR or -Q wherein R and Q represent an alkyl group having 1 to 12 carbon atoms, a cycloalkyl group having 5 to 10 carbon atoms, an aralkyl group having 7 to 20 carbon atoms or an aryl group having 6 to 15 carbon atoms. According to the present invention, there are provided a polystyrene resin composition containing substantially no halogen and having heat resistance, particularly a high heat distortion temperature under load, and an article from the composition.Type: GrantFiled: December 17, 2003Date of Patent: January 30, 2007Assignee: Teijin Chemicals, Ltd.Inventors: Katsuhiro Yamanaka, Kazuhiko Koya, Yutaka Taketani
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Patent number: 7148313Abstract: A polycarbonate resin composition comprising 100 parts by weight of a polycarbonate resin (component A), 0.01 to 10 parts by weight of at least one ultraviolet light absorber (component B) selected from the group of a specific cyclic imino ester, and 0.01 to 1 part by weight of a fatty acid ester compound (component C) which is an ester of a polyhydric alcohol and an aliphatic carboxylic acid and has a molecular weight of 500 to 2,000 g/mol, as well as molded articles thereof. The polycarbonate resin composition provides molded articles having excellent transparency, color and resistance to ultraviolet radiation, is excellent in heat stability at the time of molding and releasability and fully suppresses the production of a deposit on a metal mold.Type: GrantFiled: July 8, 2004Date of Patent: December 12, 2006Assignee: Teijin Chemicals, Ltd.Inventors: Takashi Koga, Daisuke Takahashi, Mitsuhiro Takeo
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Patent number: 7098263Abstract: A thermoplastic resin composition comprising: (A) 100 parts by weight of a noncrystalline thermoplastic resin component (component A); (B) 0.1 to 50 parts by weight of a layered silicate (component B) which satisfies the following (i) to (iii): (i) it has a cation exchange capacity of 50 to 200 milliequivalents/100 g, and at least 40% of the cation exchange capacity being exchanged with an organic onium ion, (ii) 60% or more of the layered silicate particles have a thickness of 100 nm or less in the resin composition, and (iii) the interlayer spacing of the layered silicate (component B) in the resin composition is smaller than the interlayer spacing of the layered silicate alone by 0.5 nm or more; and (C) 0 to 50 parts by weight of a compound (component C) having affinity for the noncrystalline thermoplastic resin component as the component A and a hydrophilic component; and molded articles thereof.Type: GrantFiled: July 19, 2002Date of Patent: August 29, 2006Assignee: Teijin Chemicals, Ltd.Inventors: Masaki Mitsunaga, Katsuhiko Hironaka, Masami Okamoto
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Patent number: 7087667Abstract: A flame retardant resin composition consisting essentially of: (A) 100 parts by weight of the total of resin components (components A) which include at least 60 wt % of an aromatic polyester resin; (B) an organic phosphorus compound (component B-1) represented by the following general formula (1) and having an acid value of 0.7 mgKOH/g or less or an organic phosphorus compound (component B-2) represented by the following general formula (2); (C) 0 to 50 parts by weight of a flame retardancy improving resin (component C); and (D) 0 to 200 parts by weight of a filler (component D), and a molded article thereof. Wherein, when the organic phosphorus compound is the component B-1, the amount of the component B-1 is 1 to 100 parts by weight and when the organic phosphorus compound is the component B-2, the component B-2 is used in combination with a biscumyl compound (component B-3), the amount of the component B-2 is 5 to 3.0 parts by weight, and the amount of the component B-3 is 0.01 to 5 parts by weight.Type: GrantFiled: May 14, 2002Date of Patent: August 8, 2006Assignee: Teijin Chemicals, Ltd.Inventors: Katsuhiro Yamanaka, Yutaka Taketani
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Patent number: 7070859Abstract: A laminate which is excellent in appearance, adhesion, scratch resistance, abrasion resistance and hot water resistance and has a high level of weatherability and excellent durability, and an acrylic resin composition and an organosiloxane resin composition both of which can be used for the manufacture of the above laminate and have excellent storage stability. The laminate comprises a polycarbonate substrate, a first layer formed on the surface of the polycarbonate substrate, and a second layer formed on the surface of the first layer, wherein the first layer is composed of a crosslinked acrylic copolymer and an ultraviolet light absorber, and the second layer is composed of a crosslinked organosiloxane polymer; and the crosslinked acrylic copolymer comprises specific recurring units and an urethane bond in a specific ratio, and the organosiloxane polymer has a specific structure composed of colloidal silica and alkoxysilanes.Type: GrantFiled: June 20, 2003Date of Patent: July 4, 2006Assignee: Teijin Chemicals, Ltd.Inventors: Yoshihiko Imanaka, Shunsuke Kajiwara, Tatsuya Ekinaka, Toshio Kita, Takehiro Suga, Ryou Niimi, Isao Sogou
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Patent number: 7045555Abstract: A regenerated resin composition comprising (I) a molded article pulverized material (Component A) that satisfies conditions (1) that the molded article pulverized material is a pulverized material of a molded article having an aromatic polycarbonate resin content of 30 to 98% by weight, (2) that the pulverized material has a viscosity average molecular weight of 17,000 to 30,000, and (3) that the pulverized material has a wet heat retention ratio of at least 60%, and (II) an aromatic polycarbonate resin (Component B). According to the present invention, there is provided a regenerated resin composition that comprises a pulverized material from a molded article made of an aromatic polycarbonate resin and that is excellent in the property of retaining physical properties for a long period of time and excellent in mechanical strength.Type: GrantFiled: December 22, 2003Date of Patent: May 16, 2006Assignee: Teijin Chemicals Ltd.Inventor: Makoto Takagi
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Patent number: 7041247Abstract: In an injection compression-molding apparatus, a molded article is produced by setting molds 10 and 11 to an intermediate clamped state, and then by setting the molds 10 and 11 to a final clamped state by re-clamping the molds 10 and 11 to each other after injecting melted resin into a cavity defined by the molds 10 and 11. The apparatus includes a clamping mechanism and a parallelism retaining mechanism 20. The clamping mechanism has a mold-driving cylinder 7 for moving the movable mold 10 toward and away from the fixed mold 11, a guide engaging member 8, support panels 4, 5, etc. so as to selectively set the molds 10 and 11 to the intermediate clamped state and the final clamped state. The parallelism retaining mechanism 20 retains parallelism between the molds 10 and 11 in the intermediate clamped state by giving a corrective force to mold attaching surfaces of the clamping mechanism where the respective molds 10 and 11 are mounted.Type: GrantFiled: May 31, 2002Date of Patent: May 9, 2006Assignees: Kabushiki Kaisha Kobe Seiko Sho, Teijin Chemicals, Ltd.Inventors: Tsutomu Nagaoka, Toshiaki Hotaka
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Publication number: 20050272903Abstract: An object of the present invention is to provide an aromatic polycarbonate resin composition having good rigidity and good hydrolysis resistance. The present invention is an aromatic polycarbonate resin composition comprising: (A) 100 parts by weight of aromatic polycarbonate (component A) (B) 0.1 to 20 parts by weight of layer silicate (component B) having 50 to 200 milliequivalents/100 g of cation exchange capacity and ion-exchanged by an organic onium ion represented by the following general formula (I): (wherein M represents a nitrogen atom or a phosphorus atom, R1 and R2 represent an alkyl group having 6 to 16 carbon atoms and may be the same as or different from each other, and R3 and R4 represent an alkyl group having 1 to 4 carbon atoms and may be the same as or different from each other), (C) 0.1 to 50 parts by weight of compound (component C) having an affinity for the component A and having a hydrophilic component, and (D) 0.Type: ApplicationFiled: October 29, 2003Publication date: December 8, 2005Applicant: TEIJIN CHEMICALS LTD.Inventors: Masaki Mitsunaga, Katsuhiko Hironaka
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Publication number: 20050250930Abstract: There are provided a polycarbonate copolymer (A) which has excellent light resistance and heat resistance and comprises an aromatic dihydroxy component comprising 5 to 95 mol % of fluorene-skeleton-containing dihydroxy compound (1) having a specific structure and 95 to 5 mol % of ordinary bisphenol type dihydroxy compound (2), the content of fluorene-9-one in the copolymer being not higher than 15 ppm; and a polycarbonate composition comprising 0.01 to 5 parts by weight of ultraviolet absorber (B) based on 100 parts by weight of the copolymer (A), and the composition comprising the copolymer.Type: ApplicationFiled: November 13, 2003Publication date: November 10, 2005Applicant: TEIJIN CHEMICALS LTD.Inventors: Koki Ikeda, Toshima Tokuda, Hiroshi Shuto, Manabu Matsui, Toshiyuki Miyake, Kazushi Tando