Abstract: A polycarbonate copolymer which has siloxane constituent units represented by any of formulae (1-1) to (1-4) and prescribed polycarbonate constituent units.

Abstract: Provided are a resin composition which can provide a resin sheet having excellent light shielding properties with titanium oxide sufficiently dispersed, as well as a resin sheet, a multilayered article and a card produced therefrom. The resin composition includes a polycarbonate resin in an amount of 30 to 95 parts by mass, and titanium oxide in an amount of 5 to 40 parts by mass, wherein the titanium oxide has an average primary particle size of 0.22 to 0.26 µm based on measurement of an image observed by a scanning electron microscope (SEM), and wherein the titanium oxide has an Si content of 1.0 to 1.8 % by mass and an Al content of 1.6 to 2.2 % by mass based on measurement by X-ray fluorescence (XRF) analysis after firing at 700° C. for 2 hours.

Abstract: Provided is a resin composition capable of providing a plate-shaped molded article having a high refractive index as well as a high hardness, and a plate-shaped molded article, a multilayered article, and an anti-reflection film formed from the resin composition. The resin composition contains 10 to 99 parts by mass of an acrylic resin (A); and 90 to 1 part by mass of a random copolymer (B) derived from a monomer composition B composed of 5 to 95 mass % of a (meth)acrylate represented by the formula (b1) (b-1), 5 to 95 mass % of an aromatic (meth)acrylate (b-2), and 0 to 20 mass % of an additional monomer (b-3); in the formula (b1), Rb1 is a hydrogen atom or a methyl group, and Rb2 is an aliphatic group.

Abstract: A polycarbonate resin composition containing 0.1 to 10 parts by mass of a polycarbonate copolymer (B) having carbonate bonding between (B1) bisphenol A and a (B2) polyalkylene glycol and 0.005 to 0.5 parts by mass of a phosphorus-containing stabilizer (C) relative to 100 parts by mass of a polycarbonate resin (A).

Abstract: A method for producing a polycarbonate copolymer which has siloxane constituent units represented by any of formulae (1-1) to (1-4) and prescribed polycarbonate constituent units, the method having a polymerization step for polymerizing a silane-based compound selected from among a prescribed diaryloxysilane compound, a prescribed dialkoxysilane compound and a prescribed silicon compound, a carbonate compound and a diol compound such as an aromatic diol compound or an alicyclic diol compound in the presence of a transesterification catalyst. The polymerization step is carried out in a molten state under reduced pressure while removing alcohols derived from the carbonate compound.

Abstract: An adhesive film or the like which is a laminate containing a substrate film containing a polycarbonate, a primer layer laminated on the surface of the substrate film, and an adhesive layer laminated on the surface of the primer layer opposite the substrate film.

Abstract: Provided a resin composition that is excellent in formability, and is also excellent in heat resistance and transparency when made into a formed article, as well as a formed article using the resin composition. The resin composition of the present invention contains a bisphenol AP type polycarbonate resin having a viscosity average molecular weight of 18,500 to 23,000; and a bisphenol A type polycarbonate resin having a viscosity average molecular weight of 25,000 to 35,000, wherein the ratio (WAP/WA) of the mass (WAP) of the bisphenol AP type polycarbonate resin to the mass (WA) of the bisphenol A type polycarbonate resin is 20/80 to 90/10, and the difference (|?A??AP|) between the intrinsic viscosity (?AP) of the bisphenol AP type polycarbonate resin and the intrinsic viscosity (?A) of the bisphenol A type polycarbonate resin is 0.04 to 0.18 dL/g.

Abstract: Provided is a resin composition that is excellent in formability, and is also excellent in heat resistance and transparency when made into a formed article, as well as a formed article. The resin composition of the present invention contains a bisphenol AP type polycarbonate resin having a viscosity average molecular weight of 18,500 to 23,000; and a bisphenol A type polycarbonate resin having a viscosity average molecular weight of 10,000 to 15,000, wherein the mass ratio of the bisphenol AP type polycarbonate resin to the bisphenol A type polycarbonate resin is 20/80 to 90/10, the difference between the viscosity average molecular weight of the bisphenol AP type polycarbonate resin and the viscosity average molecular weight of the bisphenol A type polycarbonate resin is 5,000 to 13,000, and the total content of the bisphenol AP type polycarbonate resin and the bisphenol A type polycarbonate resin is more than 85% by mass of resin components contained in the composition.

Abstract: A method for producing a polycarbonate copolymer which has siloxane constituent units represented by any of formulae (1-1)? to (1-4)? and prescribed polycarbonate constituent units, the method having a polymerization step for polymerizing a silane-based compound selected from among a prescribed diaryloxysilane compound, a prescribed dialkoxysilane compound and a prescribed silicon compound, a carbonate compound and a diol compound such as an aromatic diol compound or an alicyclic diol compound in the presence of a transesterification catalyst. The polymerization step is carried out in a molten state under reduced pressure while removing alcohols derived from the carbonate compound.

Abstract: A polycarbonate resin composition for an optical component, the composition comprising 0.1 to 4 parts by mass of a polyalkylene glycol (B) and 0.005 to 0.5 parts by mass of a phosphorus-containing stabilizer (C) relative to 100 parts by mass of a polycarbonate resin (A), wherein the polyalkylene glycol (B) contains 40 to 80 mol % of a tetramethylene glycol unit (b1), 5 to 45 mol % of a (2-methyl)ethylene glycol unit (b2), and 5 to 50 mol % of an ethylene glycol unit (b3), and wherein at least two units selected from the tetramethylene glycol unit (b1), the (2-methyl)ethylene glycol unit (b2), and the ethylene glycol unit (b3) are contained as a copolymer component obtained by copolymerizing them.

Abstract: A polycarbonate resin composition containing 0.1 to 10 parts by mass of a polycarbonate copolymer (B) having carbonate bonding between (B1) bisphenol A and a (B2) polyalkylene glycol and 0.005 to 0.5 parts by mass of a phosphorus-containing stabilizer (C) relative to 100 parts by mass of a polycarbonate resin (A).

Abstract: A polycarbonate resin composition for an optical component, the composition comprising 0.1 to 4 parts by mass of a polyalkylene glycol (B) and 0.005 to 0.5 parts by mass of a phosphorus-containing stabilizer (C) relative to 100 parts by mass of a polycarbonate resin (A), wherein the polyalkylene glycol (B) contains 40 to 80 mol % of a tetramethylene glycol unit (b1), 5 to 45 mol % of a (2-methyl)ethylene glycol unit (b2), and 5 to 50 mol % of an ethylene glycol unit (b3), and wherein at least two units selected from the tetramethylene glycol unit (b1), the (2-methyl)ethylene glycol unit (b2), and the ethylene glycol unit (b3) are contained as a copolymer component obtained by copolymerizing them.

Abstract: Provided are a polycarbonate resin composition for a thin optical component that has a high transmittance and a good hue, and a thin optical component. The polycarbonate resin composition for a thin optical component contains, per 100 mass parts of a polycarbonate resin (A), 0.1 to 4 mass parts of a polyalkylene glycol copolymer (B) having a linear alkylene ether unit (B1) given by general formula (I) and a branched alkylene ether unit (B2) selected from units given by general formulas (II-1) to (II-4), and 0.005 to 0.5 mass parts of a phosphorus stabilizer (C).

Abstract: Provided are a polycarbonate resin composition for a thin optical component that has a high transmittance and a good hue, and a thin optical component. The polycarbonate resin composition for a thin optical component contains, per 100 mass parts of a polycarbonate resin (A), 0.1 to 4 mass parts of a polyalkylene glycol copolymer (B) having a linear alkylene ether unit (B1) given by general formula (I) and a branched alkylene ether unit (B2) selected from units given by general formulas (II-1) to (II-4), and 0.005 to 0.5 mass parts of a phosphorus stabilizer (C).

Abstract: A polycarbonate resin composition for a thin optical component is provided, which has a high transmittance and a good hue and an excellent resistance to thermal discoloration, and a thin optical component is also provided. The polycarbonate resin composition for a thin optical component comprising, per 100 mass parts of a polycarbonate resin (A), 0.1 to 2 mass parts of a polyalkylene ether glycol compound (B) represented by general formula (1) and 0.005 to 0.5 mass parts of a phosphorus stabilizer (C).

Abstract: The present invention provides a polycarbonate resin composition for molding a molded article having a thin-walled section and exhibiting a high level of flame resistance and impact resistance, and an excellent surface appearance (low-gloss property). More specifically, the present invention is a polycarbonate resin composition for molding a polycarbonate resin molded article having a thin-walled section with a wall thickness of 0.

Abstract: A polycarbonate resin composition is provided, which exhibits a high flame retardancy, a high impact resistance, and an excellent thermal stability. The polycarbonate resin composition is characterized by containing, per 100 mass parts of (A) a polycarbonate resin, 0.001 to 1 mass part of (B) a metal organosulfonate salt and 0.5 to 5 mass parts of (C) a core/shell graft copolymer that has an Si content of at least 300 ppm and that has a butadienic rubber component for the core, and per 100 mass parts of the core/shell graft copolymer (C), 0.1 to 3 mass parts of (D) a metal salt of an organophosphate ester.

Abstract: A polycarbonate resin composition for a thin optical component is provided, which has a high transmittance and a good hue and an excellent resistance to thermal discoloration, and a thin optical component is also provided. The polycarbonate resin composition for a thin optical component comprising, per 100 mass parts of a polycarbonate resin (A), 0.1 to 2 mass parts of a polyalkylene ether glycol compound (B) represented by general formula (1) and 0.005 to 0.5 mass parts of a phosphorus stabilizer (C).

Abstract: A polycarbonate resin composition is provided, which exhibits a high flame retardancy, a high impact resistance, and an excellent thermal stability. The polycarbonate resin composition is characterized by containing, per 100 mass parts of (A) a polycarbonate resin, 0.001 to 1 mass part of (B) a metal organosulfonate salt and 0.5 to 5 mass parts of (C) a core/shell graft copolymer that has an Si content of at least 300 ppm and that has a butadienic rubber component for the core, and per 100 mass parts of the core/shell graft copolymer (C), 0.1 to 3 mass parts of (D) a metal salt of an organophosphate ester.

Abstract: The present invention provides a polycarbonate resin composition for molding a molded article having a thin-walled section and exhibiting a high level of flame resistance and impact resistance, and an excellent surface appearance (low-gloss property). More specifically, the present invention is a polycarbonate resin composition for molding a polycarbonate resin molded article having a thin-walled section with a wall thickness of 0.