Patents Assigned to Teijin Chemicals, Ltd.
  • Patent number: 8501303
    Abstract: 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: Grant
    Filed: October 18, 2010
    Date of Patent: August 6, 2013
    Assignee: Teijin Chemicals, Ltd.
    Inventors: Yoji Ohira, Toshiyuki Miyake, Hiroshi Shuto, Hiroshi Okamoto, Takayuki Ozaki, Maiko Murai
  • Publication number: 20130169593
    Abstract: 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: Application
    Filed: September 8, 2011
    Publication date: July 4, 2013
    Applicant: TEIJIN CHEMICALS LTD.
    Inventors: Koichi Imamura, Haruhiko Ito, Koki Ikeda
  • Publication number: 20130165557
    Abstract: 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: Application
    Filed: February 8, 2013
    Publication date: June 27, 2013
    Applicant: TEIJIN CHEMICALS, LTD.
    Inventor: Teijin Chemicals, Ltd.
  • Publication number: 20130164538
    Abstract: 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: Application
    Filed: December 20, 2012
    Publication date: June 27, 2013
    Applicants: TEIJIN CHEMICALS LTD, SHIN-ETSU CHEMICAL CO., LTD.
    Inventors: SHIN-ETSU CHEMICAL CO., LTD., TEIJIN CHEMICALS LTD
  • Publication number: 20130165570
    Abstract: 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: Application
    Filed: February 8, 2013
    Publication date: June 27, 2013
    Applicant: TEIJIN CHEMICALS, LTD.
    Inventor: TEIJIN CHEMICALS, LTD.
  • Patent number: 8455611
    Abstract: 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: Grant
    Filed: September 13, 2012
    Date of Patent: June 4, 2013
    Assignee: Teijin Chemicals Ltd.
    Inventors: Tetsuya Motoyoshi, Masatoshi Ando, Akiko Washizu
  • Patent number: 8425032
    Abstract: 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: Grant
    Filed: May 21, 2009
    Date of Patent: April 23, 2013
    Assignee: Teijin Chemicals, Ltd.
    Inventors: Naoshi Takahashi, Tomomitsu Onizawa, Shinichi Sato
  • Patent number: 8415410
    Abstract: 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: Grant
    Filed: March 26, 2009
    Date of Patent: April 9, 2013
    Assignee: Teijin Chemicals, Ltd.
    Inventor: Akihiro Nitta
  • Patent number: 8404349
    Abstract: 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: Grant
    Filed: March 7, 2007
    Date of Patent: March 26, 2013
    Assignee: Teijin Chemicals, Ltd.
    Inventors: Toshio Kita, Shunsuke Kajiwara, Ryou Niimi, Takehiro Suga, Tatsuya Ekinaka, Nobuaki Takaoka
  • Patent number: 8378055
    Abstract: 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: Grant
    Filed: July 16, 2010
    Date of Patent: February 19, 2013
    Assignee: Teijin Chemicals, Ltd.
    Inventors: Kazunori Nunome, Manabu Matsui, Kazushi Tando, Teruyuki Shigematsu, Tetsuya Motoyoshi, Tomokiyo Doi
  • Patent number: 8304476
    Abstract: 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: Grant
    Filed: May 20, 2010
    Date of Patent: November 6, 2012
    Assignee: Teijin Chemicals, Ltd.
    Inventors: Katsuhiro Yamanaka, Fumitaka Kondo
  • Patent number: 8298630
    Abstract: 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: Grant
    Filed: December 27, 2006
    Date of Patent: October 30, 2012
    Assignee: Teijin Chemicals, Ltd.
    Inventors: Hideaki Nitta, Masahiro Murakami, Kunio Hatanaka, Takatsune Yanagida, Hironobu Katoh, Kinji Hasegawa
  • Publication number: 20120271009
    Abstract: 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: Application
    Filed: July 28, 2010
    Publication date: October 25, 2012
    Applicant: TEIJIN CHEMICALS, LTD.
    Inventors: Yuji Higaki, Katsuhiro Yamanaka, Fumitaka Kondo
  • Patent number: 8293861
    Abstract: 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: Grant
    Filed: June 3, 2011
    Date of Patent: October 23, 2012
    Assignee: Teijin Chemicals Ltd.
    Inventors: Tetsuya Motoyoshi, Masatoshi Ando, Akiko Washizu
  • Patent number: 8278377
    Abstract: 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: Grant
    Filed: May 26, 2009
    Date of Patent: October 2, 2012
    Assignee: Teijin Chemicals, Ltd.
    Inventor: Takuya Tomoda
  • Publication number: 20120217439
    Abstract: 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: Application
    Filed: November 5, 2010
    Publication date: August 30, 2012
    Applicant: Teijin Chemicals Ltd.
    Inventors: Yuji Higaki, Takashi Oda
  • Publication number: 20120123083
    Abstract: 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: Application
    Filed: July 16, 2010
    Publication date: May 17, 2012
    Applicant: TEIJIN CHEMICALS, LTD.
    Inventors: Kazunori Nunome, Manabu Matsui, Kazushi Tando, Teruyuki Shigematsu, Tetsuya Motoyoshi, Tomokiyo Doi
  • Publication number: 20120092290
    Abstract: 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: Application
    Filed: March 30, 2010
    Publication date: April 19, 2012
    Applicants: TEIJIN CHEMICALS LTD., TEIJIN LIMITED
    Inventors: Haruhiko Itoh, Kouki Ikeda
  • Publication number: 20120094071
    Abstract: 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: Application
    Filed: March 31, 2010
    Publication date: April 19, 2012
    Applicants: TEIJIN CHEMICALS LTD., TEIJIN LIMITED
    Inventors: Haruhiko Itoh, Kouki Ikeda
  • Patent number: 8158747
    Abstract: A method for manufacturing a molded article by melting and molding a granule of a polycarbonate resin at a temperature of 280 to 380° C., wherein the granule satisfies condition (a): when 100 parts by weight of the granule is cleaned with 100 parts by weight of a 1N nitric acid aqueous solution, the amount of an Fe compound eluted into the cleaning liquid of the 1N nitric acid aqueous solution is 1 to 100 ppb in terms of an Fe atom based on the granule. The molded article exhibits excellent color and transparency.
    Type: Grant
    Filed: February 26, 2008
    Date of Patent: April 17, 2012
    Assignee: Teijin Chemicals, Ltd.
    Inventors: Seiichi Tanabe, Yoshiaki Abe