Abstract: Provided is a resin composition comprising: a polycarbonate resin (A) containing, as main repeating units, a unit (a-1) represented by the following formula (a-1) and a unit (a-2) represented by the following formula (a-2) (wherein, W represents a C1-20 alkylene group or a C6-20 cycloalkylene group, R represents a branched or linear-chain C1-20 alkyl group or a C6-20 cycloalkyl group optionally substituted, and m represents an integer of 0 to 10) and an acrylic resin (B), and the polycarbonate resin and the acrylic resin are in a weight ratio of 40:60 to 99:1, wherein the resin composition has a single glass transition temperature, which is in the range of 90° C. to 150° C., and the resin composition has excellent transparency, chemical resistance, surface hardness and heat resistance, and has a low photoelastic coefficient.

Abstract: A multilayer body includes at least one layer (C) including a resin composition; and at least one layer (D) including a thermoplastic resin, in which the resin composition includes a polycarbonate resin (A) and an acrylic resin (B) in a weight ratio of 40:60 to 99:1, the polycarbonate resin (A) includes, as main repeating units, a unit (a-1) represented by the following formula (a-1): and a unit (a-2) represented by the following formula (a-2): wherein W represents an alkylene group having 1 to 20 carbon atoms or a cycloalkylene group having 6 to 20 carbon atoms, R represents a branched or linear alkyl group having 1 to 20 carbon atoms, or a cycloalkyl group having 6 to 20 carbon atoms and optionally having a substituent, and m represents an integer of 0 to 10, and the molar ratio of the unit (a-1) and the unit (a-2) (a-1/a-2) is 40/60 to 95/5. The multilayer body has excellent transparency, chemical resistance, surface hardness, and adhesion.

Abstract: A polycarbonate resin composition or a copolymer, comprising, as main repeating units, a carbonate unit (a-1) having a fluorene ring in a side chain, a carbonate unit (a-2) represented by the following formula (a-2): (wherein W represents an alkylene group having 1 to 20 carbon atoms or a cycloalkylene group having 6 to 20 carbon atoms, R represents a branched or linear-chain alkyl group having 1 to 20 carbon atoms or a cycloalkyl group having 6 to 20 carbon atoms optionally having a substituent, and u represents an integer of 0 to 3), and a carbonate unit (a-3) derived from 2,2-bis(4-hydroxyphenyl)propane, wherein 1) a molar ratio of the carbonate unit (a-1) to the carbonate unit (a-2) is from 50/50 to 80/20, and 2) a molar ratio of the total of the carbonate unit (a-1) and the carbonate unit (a-2) to the carbonate unit (a-3) is from 1:99 to 70:30. This polycarbonate resin composition or copolymer has excellent heat resistance, transparency, and bending resistance and has low retardation.

Abstract: A multilayer body includes at least one layer (C) including a resin composition; and at least one layer (D) including a thermoplastic resin, in which the resin composition includes a polycarbonate resin (A) and an acrylic resin (B) in a weight ratio of 40:60 to 99:1, the polycarbonate resin (A) includes, as main repeating units, a unit (a-1) represented by the following formula (a-1): and a unit (a-2) represented by the following formula (a-2): wherein W represents an alkylene group having 1 to 20 carbon atoms or a cycloalkylene group having 6 to 20 carbon atoms, R represents a branched or linear alkyl group having 1 to 20 carbon atoms, or a cycloalkyl group having 6 to 20 carbon atoms and optionally having a substituent, and m represents an integer of 0 to 10, and the molar ratio of the unit (a-1) and the unit (a-2) (a-1/a-2) is 40/60 to 95/5. The multilayer body has excellent transparency, chemical resistance, surface hardness, and adhesion.

Abstract: Provided is a resin composition comprising: a polycarbonate resin (A) containing, as main repeating units, a unit (a-1) represented by the following formula (a-1) and a unit (a-2) represented by the following formula (a-2) (wherein, W represents a C1-20 alkylene group or a C6-20 cycloalkylene group, R represents a branched or linear-chain C1-20 alkyl group or a C6-20 cycloalkyl group optionally substituted, and m represents an integer of 0 to 10) and an acrylic resin (B), and the polycarbonate resin and the acrylic resin are in a weight ratio of 40:60 to 99:1, wherein the resin composition has a single glass transition temperature, which is in the range of 90° C. to 150° C., and the resin composition has excellent transparency, chemical resistance, surface hardness and heat resistance, and has a low photoelastic coefficient.

Abstract: A film having high transparency, weather resistance, moist heat resistance, excellent tensile characteristics, a good hue and high surface hardness. The film comprises: (a) 100 parts by weight of a polycarbonate resin (component a) containing a carbonate unit (A) represented by the following formula (A) and having a specific viscosity measured from a 20° C. methylene chloride solution of 0.2 to 0.5; (b) 0.03 to 2.5 parts by weight of at least one ultraviolet absorbent (component b) selected from the group consisting of an ultraviolet absorbent having a benzotriazole skeleton and an ultraviolet absorbent having a triazine skeleton; (c) 0.0001 to 0.02 part by weight of a coloring agent (component c); and (d) 0.

Abstract: A multi-layer film having excellent surface hardness and transparency, a small heat shrinkage factor and such high brittleness that it is easily trimmed after decorative molding. The multi-layer film comprises a layer (layer A) which contains a polycarbonate resin having a viscosity average molecular weight of 13,000 or more to less than 20,000 and layers (layer B-1 and layer B-2) which contain an acrylic resin and are formed on both sides of the layer A, respectively, wherein the total thickness of the multi-layer film is 50 to 200 ?m, and the thickness of the layer A accounts for 5 to 30 $ of the total thickness.

Abstract: An optical film having a desired wavelength dispersion characteristic, a low photoelastic coefficient and a desired Nz coefficient. The optical film is formed from a copolymer and meets the following conditions (i) to (v): (i) the thickness (d) is 20 to 80 ?m; (ii) the following formulas (1) and (2) are satisfied: 0.6<R(450)/R(550)<1??(1) 1.01<R(650)/R(550)<1.40??(2) (R(450), R(550) and R(650) are retardations within the plane of the film at respective wavelengths); (iii) R(550) is 120 to 160 nm; (iv) the birefringence (?n) is not less than 1.5×10?3; and (v) the Nz coefficient represented by the following formula (4) is 1.18 to 2.40: Nz=(nx?nz)/(nx?ny)??(4) (nx, ny and nz are 3-dimensional birefringences of the film).

Abstract: A multi-layer film having excellent surface hardness and transparency, a small heat shrinkage factor and such high brittleness that it is easily trimmed after decorative molding. The multi-layer film comprises a layer (layer A) which contains a polycarbonate resin having a viscosity average molecular weight of 13,000 or more to less than 20,000 and layers (layer B-1 and layer B-2) which contain an acrylic resin and are formed on both sides of the layer A, respectively, wherein the total thickness of the multi-layer film is 50 to 200 ?m, and the thickness of the layer A accounts for 5 to 30% of the total thickness.

Abstract: An optical film having a desired wavelength dispersion characteristic, a low photoelastic coefficient and a desired Nz coefficient. The optical film is formed from a copolymer and meets the following conditions (i) to (v): (i) the thickness (d) is 20 to 80 ?m; (ii) the following formulas (1) and (2) are satisfied: 0.6<R(450)/R(550)<1??(1) 1.01<R(650)/R(550)<1.40??(2) (R(450), R(550) and R(650) are retardations within the plane of the film at respective wavelengths); (iii) R(550) is 120 to 160 nm; (iv) the birefringence (?n) is not less than 1.5×10?3; and (v) the Nz coefficient represented by the following formula (4) is 1.18 to 2.40: Nz=(nx?nz)/(nx?ny)??(4) (nx, ny and nz are 3-dimensional birefringences of the film).

Abstract: A multi-layer film which is excellent in transferability to a metal shape during thermoforming and hardly produces uneven thickness, wrinkles, whitening or cracks on the surface of the obtained molded article. The multi-layer film has a layer (layer A) containing a polycarbonate resin and a polyester-based thermoplastic elastomer and a layer (layer B) containing an acrylic resin, wherein the layer B is formed on at least one side of the layer A.

Abstract: A multi-layer film which is excellent in transferability to a metal shape during thermoforming and hardly produces uneven thickness, wrinkles, whitening or cracks on the surface of the obtained molded article. The multi-layer film has a layer (layer A) containing a polycarbonate resin and a polyester-based thermoplastic elastomer and a layer (layer B) containing an acrylic resin, wherein the layer B is formed on at least one side of the layer A.

Abstract: An optical film having a desired wavelength dispersion characteristic, a low photoelastic coefficient and a desired Nz coefficient. The optical film is formed from a copolymer and meets the following conditions (i) to (v): (i) the thickness (d) is 20 to 80 ?m; (ii) the following formulas (1) and (2) are satisfied: 0.6<R(450)/R(550)<1??(1) 1.01<R(650)/R(550)<1.40??(2) (R(450), R(550) and R(650) are retardations within the plane of the film at respective wavelengths); (iii) R(550) is 120 to 160 nm; (iv) the birefringence (?n) is not less than 1.5×10?3; and (v) the Nz coefficient represented by the following formula (4) is 1.18 to 2.40: Nz=(nx?nz)/(nx?ny)??(4) (nx, ny and nz are 3-dimensional birefringences of the film).