Abstract: One embodiment of the present invention relates to a polymer, a composition, a cured product, a laminate, or an electronic component, and the polymer has a repeating structural unit represented by Formula (1) and has a group Y represented by Formula (a) at a terminal: wherein X's are each independently —O—, —S—, or —N(R3)—, R3 is a hydrogen atom, a monovalent hydrocarbon group having 1 to 20 carbon atoms, a monovalent halogenated hydrocarbon group having 1 to 20 carbon atoms, or a group obtained by substituting a part of the hydrocarbon group or the halogenated hydrocarbon group with at least one selected from an oxygen atom and a sulfur atom, R1 is a divalent organic group, and R2 is a divalent unsubstituted or substituted nitrogen-containing heteroaromatic ring; —Y??(a) wherein Y is a group containing an ethylenically unsaturated double bond and having 3 to 50 carbon atoms, an unsubstituted or substituted aromatic hydrocarbon group having 6 to 50 carbon atoms, an unsubstituted or substituted

Abstract: Provided is a prepreg for producing a multilayer printed wiring board having high reliability and being excellent in adhesiveness with respect to a base material or the like. The prepreg includes: a base material; and a polymer having a structural unit represented by at least one kind of the following formulae (1-1), (1-2), and (1-3).

Abstract: An emulsion composition according to the present invention includes: a polymerizable compound comprising two or more (meth)acryloyl groups; a surfactant; and a dispersion medium including water as a principal component, in which an oil droplet diameter D90 corresponding to a diameter at cumulative 90% by volume in the oil droplet size distribution of oil droplets comprising the polymerizable compound and the surfactant, measured according to a laser diffraction and scattering measurement process is less than 1.8 ?m. A maximum oil droplet diameter Dmax of the oil droplets, measured according to the laser diffraction and scattering measurement process is preferably less than 4.0 ?m. A content of the polymerizable compound in the composition with respect to 100 parts by mass of a total of components other than the dispersion medium is preferably no less than 40 parts by mass. The oil droplets may further comprise an inorganic particle.

Abstract: An emulsion composition according to the present invention includes: a polymerizable compound comprising two or more (meth)acryloyl groups; a surfactant; and a dispersion medium including water as a principal component, in which an oil droplet diameter D90 corresponding to a diameter at cumulative 90% by volume in the oil droplet size distribution of oil droplets comprising the polymerizable compound and the surfactant, measured according to a laser diffraction and scattering measurement process is less than 1.8 ?m. A maximum oil droplet diameter Dmax of the oil droplets, measured according to the laser diffraction and scattering measurement process is preferably less than 4.0 ?m. A content of the polymerizable compound in the composition with respect to 100 parts by mass of a total of components other than the dispersion medium is preferably no less than 40 parts by mass. The oil droplets may further comprise an inorganic particle.

Abstract: A method for manufacturing a molded article includes applying a photosensitive composition to at least one of a first plate and a second plate to form a coated film. The first plate is pressed against the second plate with the coated film therebetween. The coated film of the photosensitive composition is exposed. The first plate is separated from the second plate. The exposed coated film is heated. At least one of the first plate and the second plate has a pattern including concave and convex on its surface, and the coated film conforms to the pattern in the step of pressing the first plate against the second plate. The photosensitive composition includes a thioether compound, a photopolymerization initiator other than a phosphine oxide compound and an ?-aminoalkylphenone compound, and a compound having 1 to 6 (meth)acryloyl groups in one molecule.

Abstract: [Problems] To provide an optical film for a liquid crystal display, in which a wide range of a retardation of transmitted light can be controlled in manufacturing and good viewing angle compensation effects on such as preventing light leakage or color dropout (coloring) in true black display and achieving a high contrast in all directions can be obtained when used in liquid crystal display. [Means for Solving Problems] The optical film of the invention includes a film (a) layer made of a cyclic olefin resin and a film (b) layer made of a polyimide resin or a polyetherimide resin, wherein following formulae (1) and (2) are preferably satisfied: (1) 200 nm?Rth?1,000 nm and (2) 0?R550?200 nm, wherein Rth and R550 represent the retardation in the direction of film thickness and the in-plane retardation of the film, respectively, at wavelength of 550 nm.

Abstract: Each of the thermoplastic resin composition and the optical film of the present invention comprises a cycloolefin-based polymer (A) and a vinyl-based polymer (B) having a structural unit derived from p-isopropenylphenol. The thermoplastic resin composition and the optical film exhibit excellent compatibility of their components with keeping property of low birefringence inherent in the thermoplastic resin composition comprising the cycloolefln-based polymer and the vinyl-based polymer, and they are excellent in weathering resistance and heat resistance.

Abstract: [Problems] To provide an optical film for a liquid crystal display that has good viewing angle compensation effects such as preventing color dropout (coloration) and achieving high contrast in all directions when used in a liquid crystal display. [Means for solving problems] An optical film of the invention comprises at least one film (a) layer made of a cyclic olefin resin exhibiting positive birefringence and a film (b) layer made of a polymer exhibiting negative birefringence laminated on said film (a) layer, and satisfies (1) 0.1?Nz-coefficient?0.9, (2) 0.5?R450/R550?0.9, (3) 1.0?R650/R550?1.3 and (4) 200 nm?R550?350 nm; wherein R450, R550 and R650 represent the retardation R at wavelengths of 450 nm, 550 nm and 650 nm, respectively.

Abstract: The thermoplastic resin composition of the present invention comprises (A) a cycloolefin-based polymer and (B) a vinyl-based polymer having a polar group, has a glass transition temperature of not lower than 100° C. and has a difference in glass transition temperature between the polymers (A) and (B) of less than 50° C. The optical film of the present invention comprises the thermoplastic resin composition of the invention. According to the present invention, it is possible to improve development of retardation at a low stress in the film stretching while retaining excellent heat resistance and optical properties and maintaining wavelength dispersion properties.

Abstract: The present invention is intended to provide a thermoplastic resin composition which exhibits excellent compatibility while retaining low birefringence and is excellent in weathering resistance and heat resistance, an optical film which is obtained from the thermoplastic resin composition and a retardation film which is excellent in weathering resistance and heat resistance and has reciprocal wavelength dispersion properties. The thermoplastic resin composition comprises a vinyl-based polymer (A) having a unit represented by the following formula (I) and a cycloolefin-based polymer (B). wherein R1 to R3 are each a hydrogen atom, a halogen atom, a substituted or unsubstituted hydrocarbon group of 1 to 30 carbon atoms which may have a linkage containing an oxygen atom, a sulfur atom, a nitrogen atom or a silicon atom, or a polar group, and n is 0 or a positive integer.