Patents Assigned to Teijin Chemicals
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Patent number: 8524824Abstract: To provide a resin composition comprising an aromatic polycarbonate resin and having excellent appearance, impact strength, thermal stability, hydrolysis resistance, and flame retardancy. The present invention relates to a resin composition comprising (A) 75 to 99.98 wt % of an aromatic polycarbonate resin (component A), (B) 0.01 to 5 wt % of a mixture of polytetrafluoroethylene particles and an organic polymer (component B) and (C) 0.01 to 20 wt % of a flame retardant (component C), wherein the sodium metal ion content of the component B (excluding sodium metal ion contained in the polytetrafluoroethylene particles) is 10 ppm or less, and molded articles therefrom.Type: GrantFiled: July 30, 2007Date of Patent: September 3, 2013Assignee: Teijin Chemicals, Ltd.Inventors: Takuya Tomoda, Yoshihisa Shinagawa, Shinichi Soda
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Patent number: 8501303Abstract: A resin composition comprising an aromatic polycarbonate resin having excellent transparency and flame retardancy. The resin composition comprises 100 parts by weight of an aromatic polycarbonate resin having a branched structure with a branching ratio of 0.7 to 1.1 mol % (component A) and 0.005 to 12 parts by weight of at least one flame retardant.Type: GrantFiled: October 18, 2010Date of Patent: August 6, 2013Assignee: Teijin Chemicals, Ltd.Inventors: Yoji Ohira, Toshiyuki Miyake, Hiroshi Shuto, Hiroshi Okamoto, Takayuki Ozaki, Maiko Murai
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Publication number: 20130169593Abstract: Provided is a touch panel device which prevents a problem such as generation of Newton's rings even if an air layer between the touch panel device and a display device has a small thickness. This capacitance type touch panel device (100) includes: a protective transparent base (10) having an observation-side surface and a display device-side surface; and two polymer films with position detection electrode layers (20b, 22; 30b, 32) which are arranged on the display device-side surface of the protective transparent base. The difference between the minimum value and the maximum value of the linear expansion coefficients in the surface direction of all the polymer films (20b; 30b) arranged on the display device-side surface of the protective transparent base is 10.0×10?6 cm/cm. ° C. or below. Furthermore, the display device with a touch panel device (100, 200, 300) according to the present invention has such a touch panel device.Type: ApplicationFiled: September 8, 2011Publication date: July 4, 2013Applicant: TEIJIN CHEMICALS LTD.Inventors: Koichi Imamura, Haruhiko Ito, Koki Ikeda
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Publication number: 20130165570Abstract: A laminate having excellent weatherability and abrasion resistance as well as adhesion. The laminate comprises a base, a first layer formed by thermally curing an acrylic resin composition and a second layer formed by thermally curing an organosiloxane resin composition, all of which are formed in the mentioned order, wherein the acrylic resin composition comprises: (A) an acrylic copolymer which contains at least 70 mol % of a recurring unit represented by the following formula (A): wherein X is a hydrogen atom or methyl group, and Y is a methyl group, ethyl group, cycloalkyl group, hydroxyalkyl group having 2 to 5 carbon atoms or triazine-based ultraviolet absorber residue; (B) a blocked polyisocyanate compound; (C) a curing catalyst; and (D) a triazine-based ultraviolet absorber, and the organosiloxane resin composition comprises: (E) colloidal silica and (F) a hydrolysis condensate of an alkoxysilane.Type: ApplicationFiled: February 8, 2013Publication date: June 27, 2013Applicant: TEIJIN CHEMICALS, LTD.Inventor: TEIJIN CHEMICALS, LTD.
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Publication number: 20130164538Abstract: There is disclosed a composite comprising a first substrate comprising a formed resin body containing a silicone-modified resin, and a second substrate having a to-be-joined surface joined'to a to-be-joined surface of the first substrate, wherein the to-be-joined surface of the first substrate, or the to-be-joined surfaces of the first and second substrates has/have been subjected to application of one or more of an ultraviolet light irradiating treatment, a corona treatment, and a plasma treatment. As a result, there is provided a composite and an expedient production method of such a composite, which composite comprises a substrate comprising a formed resin body containing a silicone-modified resin, and another substrate joined to the firstly mentioned substrate in a strong manner with excellent durability therebetween.Type: ApplicationFiled: December 20, 2012Publication date: June 27, 2013Applicants: TEIJIN CHEMICALS LTD, SHIN-ETSU CHEMICAL CO., LTD.Inventors: SHIN-ETSU CHEMICAL CO., LTD., TEIJIN CHEMICALS LTD
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Publication number: 20130165557Abstract: It is an object of the present invention to provide a laminate having excellent weatherability and abrasion resistance as well as adhesion. The present invention relates to a laminate comprising a base, a first layer formed by thermally curing an acrylic resin composition and a second layer formed by thermally curing an organosiloxane resin composition, all of which are formed in the mentioned order, wherein the acrylic resin composition comprises: (A) an acrylic copolymer which contains at least 70 mol % of a recurring unit represented by the following formula (A): wherein X is a hydrogen atom or methyl group, and Y is a methyl group, ethyl group, cycloalkyl group, hydroxyalkyl group having 2 to 5 carbon atoms or triazine-based ultraviolet absorber residue; (B) a blocked polyisocyanate compound; (C) a curing catalyst; and (D) a triazine-based ultraviolet absorber, and the organosiloxane resin composition comprises: (E) colloidal silica and (F) a hydrolysis condensate of an alkoxysilane.Type: ApplicationFiled: February 8, 2013Publication date: June 27, 2013Applicant: TEIJIN CHEMICALS, LTD.Inventor: Teijin Chemicals, Ltd.
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Patent number: 8455611Abstract: An optical film comprising a copolycarbonate composed of 25 to 90 mol % of unit (A) of the following formula, and 10 to 75 mol % of unit (B) of the following formula, wherein the substituents are defined herein, and the optical film satisfies the following expression (1), R(450)<R(550)<R(650) (1), wherein R(450), R(550) and R(650) are in-plane retardation values of the film at wavelengths of 450 nm, 550 nm and 650 nm. The optical film exhibits a desired chromatic dispersion, low photoelasticity and excellent melt processability.Type: GrantFiled: September 13, 2012Date of Patent: June 4, 2013Assignee: Teijin Chemicals Ltd.Inventors: Tetsuya Motoyoshi, Masatoshi Ando, Akiko Washizu
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Patent number: 8425032Abstract: This invention provides a spectacle lens excellent in hue, and provides a spectacle lens formed from a resin composition containing (1) 100 parts by weight of a polycarbonate resin, (2) 0.05 to 0.5 part by weight of a fatty acid ester mold release agent that is at least one member selected from the group consisting of (i) an ester of a monohydric alcohol having 1 to 20 carbon atoms and a saturated or unsaturated fatty acid having 10 to 30 carbon atoms and (ii) a full ester of glycerin and a saturated or unsaturated fatty acid having 10 to 30 carbon atoms, and that has a metal potassium content of 15 ppm or less and a metal sodium content of 30 ppm or less, (3) 0.1 to 0.25 part by weight of a benzotriazole ultraviolet absorbent, (4) 0.1 to 0.3 part by weight of a hindered phenol antioxidant, and (5) 0.005 to 0.1 part by weight of a phosphorus heat stabilizer, and a process for the production thereof.Type: GrantFiled: May 21, 2009Date of Patent: April 23, 2013Assignee: Teijin Chemicals, Ltd.Inventors: Naoshi Takahashi, Tomomitsu Onizawa, Shinichi Sato
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Patent number: 8415410Abstract: A resin composition for giving molded articles that effectively block heat radiation from sunlight and are excellent in transparency, and molded articles thereof. The resin composition comprises an aromatic polycarbonate resin (Component A), hexaboride particles of at least one element selected from the group consisting of Y, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Sr and Ca (Component B-1) and other resin different from Component A (Component B-2), wherein the total content of Component B-1 and Component B-2 is 0.001 to 1 part by weight per 100 parts by weight of Component A, the resin composition contains particles (1) composed of Component B-1 and particles (2) composed of Component B-1 and Component B-2, both the particles (1) and (2) having a number average secondary particle diameter of 50 ?m or less and a maximum secondary particle diameter of 300 ?m or less.Type: GrantFiled: March 26, 2009Date of Patent: April 9, 2013Assignee: Teijin Chemicals, Ltd.Inventor: Akihiro Nitta
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Patent number: 8404349Abstract: It is an object of the present invention to provide a laminate having excellent weatherability and abrasion resistance as well as adhesion. The present invention relates to a laminate comprising a base, a first layer formed by thermally curing an acrylic resin composition and a second layer formed by thermally curing an organosiloxane resin composition, all of which are formed in the mentioned order, wherein the acrylic resin composition comprises: (A) an acrylic copolymer which contains at least 70 mol % of a recurring unit represented by the following formula (A): wherein X is a hydrogen atom or methyl group, and Y is a methyl group, ethyl group, cycloalkyl group, hydroxyalkyl group having 2 to 5 carbon atoms or triazine-based ultraviolet absorber residue; (B) a blocked polyisocyanate compound; (C) a curing catalyst; and (D) a triazine-based ultraviolet absorber, and the organosiloxane resin composition comprises: (E) colloidal silica and (F) a hydrolysis condensate of an alkoxysilane.Type: GrantFiled: March 7, 2007Date of Patent: March 26, 2013Assignee: Teijin Chemicals, Ltd.Inventors: Toshio Kita, Shunsuke Kajiwara, Ryou Niimi, Takehiro Suga, Tatsuya Ekinaka, Nobuaki Takaoka
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Patent number: 8378055Abstract: This invention is to provide a polyester carbonate copolymer suitable for an optical lens that has high refractivity and transparency and low birefringence and little optical strain, and optical lenses formed therefrom. This invention is a polyester carbonate copolymer for an optical lens, which comprises 67 to 95 mol % of a unit of the following formula (I) and 33 to 5 mol % of a unit of the following formula (II) and has a specific viscosity of 0.12 to 0.30, wherein Y in the formula (II) is a phenylene group or a naphthalenediyl group.Type: GrantFiled: July 16, 2010Date of Patent: February 19, 2013Assignee: Teijin Chemicals, Ltd.Inventors: Kazunori Nunome, Manabu Matsui, Kazushi Tando, Teruyuki Shigematsu, Tetsuya Motoyoshi, Tomokiyo Doi
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Patent number: 8304476Abstract: It is a purpose of the present invention to provide a flame retardant resin composition having a high level of flame retardancy and excellent physical properties and a molded article thereof. The flame retardant resin composition comprises: (A) 100 parts by weight of a resin component (component A) containing polylactic acid (component A-1); (B) 10 to 50 parts by weight of an organic phosphorus compound represented by the following formula (1) (component B): (in the above formula, the phenyl group may have a substituent); (C) 5 to 30 parts by weight of a hydrogenated styrene-based thermoplastic elastomer (component C); and (D) 1 to 10 parts by weight of talc (component D).Type: GrantFiled: May 20, 2010Date of Patent: November 6, 2012Assignee: Teijin Chemicals, Ltd.Inventors: Katsuhiro Yamanaka, Fumitaka Kondo
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Patent number: 8298630Abstract: 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: GrantFiled: December 27, 2006Date of Patent: October 30, 2012Assignee: Teijin Chemicals, Ltd.Inventors: Hideaki Nitta, Masahiro Murakami, Kunio Hatanaka, Takatsune Yanagida, Hironobu Katoh, Kinji Hasegawa
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Publication number: 20120271009Abstract: It is an object of the present invention to provide a polycarbonate-polydiorganosiloxane copolymer having improved transparency. The present invention is the polycarbonate-polydiorganosiloxane copolymer comprises a polycarbonate block and a polydiorganosiloxane block, wherein (i) the copolymer has an aggregation structure comprising a matrix of the polycarbonate and polydiorganosiloxane domains dispersed therein; (ii) the polydiorganosiloxane domains have an average size of 5 to 40 nm and a normalized dispersity of not more than 30%; and (iii) the total light transmittance is not less than 88%.Type: ApplicationFiled: July 28, 2010Publication date: October 25, 2012Applicant: TEIJIN CHEMICALS, LTD.Inventors: Yuji Higaki, Katsuhiro Yamanaka, Fumitaka Kondo
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Patent number: 8293861Abstract: An optical film comprising a copolycarbonate composed of 25 to 90 mol % of unit (A) of the following formula, and 10 to 75 mol % of unit (B) of the following formula, wherein the substituents are defined herein, and the optical film satisfies the following expression (1), R(450)<R(550)<R(650) (1), wherein R(450), R(550) and R(650) are in-plane retardation values of the film at wavelengths of 450 nm, 550 nm and 650 nm. The optical film exhibits a desired chromatic dispersion, low photoelasticity and excellent melt processability.Type: GrantFiled: June 3, 2011Date of Patent: October 23, 2012Assignee: Teijin Chemicals Ltd.Inventors: Tetsuya Motoyoshi, Masatoshi Ando, Akiko Washizu
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Patent number: 8278377Abstract: A resin composition which is excellent in appearance, impact strength, hydrolysis resistance and drip prevention properties. The resin composition comprises (A) 100 parts by weight of an aromatic polycarbonate resin (component A), (B) 0.01 to 6 parts by weight of a polymer mixture (component B) obtained by suspension polymerizing a styrene monomer, a maleic anhydride monomer and an acrylic monomer in the presence of polytetrafluoroethylene particles, and (C) 0.01 to 30 parts by weight of a flame retardant (component C).Type: GrantFiled: May 26, 2009Date of Patent: October 2, 2012Assignee: Teijin Chemicals, Ltd.Inventor: Takuya Tomoda
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Publication number: 20120217439Abstract: This invention seeks to provide an extrusion-molded product formed from a resin composition that contains an aromatic polycarbonate resin and is excellent in transparency, appearance and flame retardancy. This invention is an extrusion-molded product formed from a resin composition comprising 100 parts by weight of an aromatic polycarbonate resin having a branched structure and a branching ratio of 0.7 to 1.5 mol % (component A) and 0.005 to 5 parts by weight of a flame retardant.Type: ApplicationFiled: November 5, 2010Publication date: August 30, 2012Applicant: Teijin Chemicals Ltd.Inventors: Yuji Higaki, Takashi Oda
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Publication number: 20120123083Abstract: This invention is to provide a polyester carbonate copolymer suitable for an optical lens that has high refractivity and transparency and low birefringence and little optical strain, and optical lenses formed therefrom. This invention is a polyester carbonate copolymer for an optical lens, which comprises 67 to 95 mol % of a unit of the following formula (I) and 33 to 5 mol % of a unit of the following formula (II) and has a specific viscosity of 0.12 to 0.30, wherein Y in the formula (II) is a phenylene group or a naphthalenediyl group.Type: ApplicationFiled: July 16, 2010Publication date: May 17, 2012Applicant: TEIJIN CHEMICALS, LTD.Inventors: Kazunori Nunome, Manabu Matsui, Kazushi Tando, Teruyuki Shigematsu, Tetsuya Motoyoshi, Tomokiyo Doi
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Publication number: 20120092290Abstract: The present invention provides a transparent electroconductive laminate having a combination of high transparency, small haze and sufficient lubricity; and a transparent touch panel comprising such a transparent electroconductive laminate. The transparent electroconductive laminate of the present invention comprises a transparent organic polymer substrate which has, on at least one surface thereof, a cured resin layer, and a transparent electroconductive layer in this order, and satisfies the following conditions (a) the cured resin layer contains a resin component and first ultrafine particles having an average primary particle diameter of 1 to 100 nm, (b) the resin component and the first ultrafine particles contain the same metal and/or metalloid element, and (c) in the cured resin layer, the content of the first ultrafine particles is from 0.01 to 3 parts by mass per 100 parts by mass of the resin component, and (d) the cured resin layer has a thickness of 0.01 to 2 ?m.Type: ApplicationFiled: March 30, 2010Publication date: April 19, 2012Applicants: TEIJIN CHEMICALS LTD., TEIJIN LIMITEDInventors: Haruhiko Itoh, Kouki Ikeda
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Publication number: 20120094071Abstract: The present invention provides a transparent electroconductive laminate suitable for use in combination with a display device such as a liquid crystal display, and a transparent touch panel having the transparent electroconductive laminate. The transparent electroconductive laminate comprises a transparent organic polymer substrate 33 having, on at least one surface thereof, a hardcoat (HC) layer 33h, an optical interference layer 32, and a transparent electroconductive layer 31 in this order. The transparent electroconductive laminate satisfies the following conditions: the refractive indexes n3 and n3h of the transparent organic polymer substrate and the HC layer satisfy the following formula: |na?n3h|0.02, the thickness of the HC layer is from 1 to 10 ?m, the thickness of the optical interference layer is from 5 to 500 nm, the thickness of the transparent electroconductive layer is from 5 to 200 nm, the total light transmittance is 85% or more, and the b* value is from ?1.0 to less than 1.Type: ApplicationFiled: March 31, 2010Publication date: April 19, 2012Applicants: TEIJIN CHEMICALS LTD., TEIJIN LIMITEDInventors: Haruhiko Itoh, Kouki Ikeda