Abstract: Provided are a retardation film that has a high heat resistance, has excellent formability and handleability even in a single-layer structure, has a negative thickness-direction retardation Rth value, and is suitable as a negative A-plate or a positive C-plate and a method for producing the film. The retardation film is formed of a stretched film of a polyester resin, contains a unit (A1) represented by the formula (1) as a diol unit (A) and a unit (B1) represented by the formula (2a) or (2b) as a dicarboxylic acid unit (B), and is a negative A-plate or a positive C-plate. In the formulae, Z1 and Z2 represent an aromatic hydrocarbon ring, R1, R2a, R2b, R3a and R3b represent a substituent, k, p1 and p2 denotes an integer of 0 to 8, q denotes an integer of 0 to 4, m1, m2, n1 and n2 denotes an integer of not less than 0, A1a and A1b represents an alkylene group, and A2a, A2b and A3 represents a divalent hydrocarbon group.

Abstract: Provided are a novel ultraviolet absorber that has an excellent absorbing property for UV-A or UV-B, furthermore specifically absorbs only ultraviolet ray at a specific wavelength, and is capable of being used for general purposes, and an ultraviolet absorbing resin excellent in bleed-out resistance in addition to the characteristics described above. The ultraviolet absorber is a fluorene compound represented by the general formula (1) or a resin comprising the fluorene compound as a constituent unit.

Abstract: A retardation film comprising: a first resin layer comprising resin A having negative intrinsic birefringence, wherein in-plane phase difference Ro(450) at an angle of incidence of 0° for light at a wavelength of 450 nm, in-plane phase difference Ro(550) at an angle of incidence of 0° for light at a wavelength of 550 nm, and in-plane phase difference Ro(650) at an angle of incidence of 0° for light at a wavelength of 650 nm meet Ro(450)>Ro(550)>Ro(650); and a second resin layer comprising resin B having positive intrinsic birefringence, wherein in-plane phase difference Ro(450) at an angle of incidence of 0° for light at a wavelength of 450 nm, in-plane phase difference Ro(550) at an angle of incidence of 0° for light at a wavelength of 550 nm, and in-plane phase difference Ro(650) at an angle of incidence of 0° for light at a wavelength of 650 nm meet Ro(450)>Ro(550)>Ro(650), the retardation film having a Nz coefficient of ?1.0 to 1.

Abstract: Provided is a polarizer protective film which is a multilayer film having a polyester-based resin layer comprising a fluorene-based polyester resin, and an acrylic resin layer comprising an acrylic resin.

Abstract: A phase difference film comprising one layer or multiple layers, wherein at least one layer thereof comprises a composition containing a polyester resin having arylated fluorene in a side chain, a relationship between phase differences Ro(450) and Ro(550) in an in-plane direction of the layer comprising the polyester resin is Ro(450)/Ro(550)?1.22, and the layer(s) is drawn.

Abstract: A retardation film includes a polyester-series resin exhibiting a negative orientation birefringence and a forward wavelength dispersibility in retardation in combination with a polyamide-series resin exhibiting a positive orientation birefringence and a flat dispersibility in retardation. The polyester-series resin may contain a constitutional unit having a fluorene-9,9-diyl group, and the polyamide-series resin may contain a constitutional unit having an alicyclic skeleton. The polyester-series resin may contain at least one constitutional unit selected from a fluorenedicarboxylic acid unit (A1) containing a unit of the formula (1) and a fluorenediol unit (B1) containing a unit of the formula (2): wherein R1 and R2 each represent a substituent; k and m each denote an integer of 0 to 8; X1a, X1b, X2a, and X2b each represent a hydrocarbon group; A1a and A1b each represent an alkylene group; n1 and n2 each denote an integer of not less than 0.

Abstract: Provided are a retardation film that has a high heat resistance, has excellent formability and handleability even in a single-layer structure, has a negative thickness-direction retardation Rth value, and is suitable as a negative A-plate or a positive C-plate and a method for producing the film. The retardation film is formed of a stretched film of a polyester resin, contains a unit (A1) represented by the formula (1) as a diol unit (A) and a unit (B1) represented by the formula (2a) or (2b) as a dicarboxylic acid unit (B), and is a negative A-plate or a positive C-plate. In the formulae, Z1 and Z2 represent an aromatic hydrocarbon ring, R1, R2a, R2b, R3a and R3b represent a substituent, k, p1 and p2 denotes an integer of 0 to 8, q denotes an integer of 0 to 4, m1, m2, n1 and n2 denotes an integer of not less than 0, A1a and A1b represents an alkylene group, and A2a, A2b and A3 represents a divalent hydrocarbon group.