Abstract: The present invention provides a light-diffusive polycarbonate-based resin composition which includes (A) 100 parts by mass of an aromatic polycarbonate resin, (B) 0.01 to parts by mass of a light-diffusing agent, and (C) 0.1 to parts by mass of a styrene-(meth)acrylic ester copolymer, and a light-diffusing plate formed from the composition. The light-diffusive polycarbonate-based resin composition can be injection-molded to form a light-diffusing plate having satisfactory precision in thickness for use in comparatively large liquid crystal displays having a size larger than 20 inches.

Abstract: The present invention provides a light shielding highly reflective laminated sheet, which is a multilayer sheet comprising at least two layers, wherein the total light reflectance (Y value) of the surface of the first layer is 96% or more, the total light reflectance (Y value) of the surface of the outermost layer opposite to the first layer in the multilayer sheet is 30% or less and the total light transmittance of the laminated sheet is 0.3% or less, and a thermomolded article and a case using thereof. In application to light reflection for a liquid crystal backlight unit and the like, the light shielding highly reflective laminated sheet, the thermomolded article and the case using thereof of the present invention can prevent light leakage from a lamp holder portion and also make it possible to integrate a plurality of components of the backlight unit into a single body owing to improved workability of the sheet.

Abstract: A light reflecting sheet having high light reflectance and an excellent light shielding property and a molded product using the same are provided. The light reflecting sheet has a light reflecting layer that has voids inside thereof and formed from a thermoplastic resin composition provided on at least one side of a base material sheet formed from a polycarbonate resin composition containing a combination of (A) 90 to 50% by mass of a polycarbonate-based polymer and (B) 10 to 50% by mass of titanium oxide. The molded product is formed from the light-reflecting sheet.

Abstract: A modularized reflector is produced by integrating or laminating: a sheet metal back chassis in which a light source supporting section, a through-hole or a groove for extracting a light source electrode terminal, and a frame for supporting a light diffusing plate and an optical film are integrally formed through sheet metal working; and a light reflecting layer made of a molded product of a light reflective thermoplastic resin material formed into a shape for covering the back chassis. By producing a backlight device and a liquid crystal display using the reflector, there are provided the reflector reduced in the number of components, in the number of assembly steps, and in weight and thickness, and a back light and a liquid crystal display using the reflector.

Abstract: The present invention provides a thin light-reflecting sheet with excellent light property of flame retardancy, a high light-reflectance and a high light-shielding ability, which is formed from a polycarbonate resin composition containing a combination of 70% to 30% by mass of a polycarbonate-based polymer (A) and 30% to 70% by mass of titanium oxide (B) having a difference of moisture concentration at 100° C. with that at 300° C. of 2700 ppm by mass or less. The invention also provides a shaped article thereof.

Abstract: The present invention provides a light-diffusing resin composition comprising (A) an aromatic polycarbonate resin in an amount of 100 parts by mass, (B) an acrylic resin in an amount of 0.01 to 1 part by mass, and (C) a light-diffusing agent in an amount of 0.01 to 10 parts by mass, the light-diffusing resin composition which is usable for optical elements in the field of liquid crystal displays, such as light diffuser plates, optical lenses and optical guide plates, street lamp covers, glass substitutes such as laminated glass for vehicles or construction materials, and the like.

Abstract: The present invention provides a prism-integrated light-diffusing plate, characterized in that a prismatic portion formed of a plurality of prism-shaped protrusions is provided on at least one surface of a light-diffusing sheet which is formed of a transparent resin material containing a light-diffusing agent and which has a thickness of 0.5 to 3 mm and a total light transmittance of 60 to 95%. The prism-integrated light-diffusing plate serves as both a prism sheet and a light-diffusing plate, diffuses light uniformly, and increases the brightness of an illumination cover or a liquid crystal display backlight for a large screen.

Abstract: A polycarbonate resin composition which has excellent flame retardancy, even when containing neither any phosphorus compound flame retardant nor any halogenated flame retardant, and which is highly reflective and has light-shutting properties and excellent thermal stability. The polycarbonate resin composition comprises 5 to 98 parts by weight of a polycarbonate/polyorganosiloxane copolymer, 0 to 93 parts by weight of a polycarbonate resin, 2 to 50 parts by weight of titanium oxide, 0 to 1.0 parts by weight of a fibril-forming polytetrafluoroethylene, and 0.05 to 2.0 parts by weight of an organosiloxane, the sum of the ingredients (A), (B), and (C) is 100 parts by weight.

Abstract: A light-reflecting polycarbonate resin sheet is characterized in that a light-resistant layer for cutting or absorbing ultraviolet light is provided on at least one side of a polycarbonate resin foam layer. A light-reflecting laminate is obtained by superposing such a light-reflecting polycarbonate resin sheet on a metal plate. The light-reflecting polycarbonate resin sheet has high light resistance while maintaining excellent reflective characteristics.

Abstract: The light reflection sheet (I) of the present invention comprises a sheet having a thickness of 0.4 to 2 mm and comprising a polycarbonate resin composition containing (B) titanium oxide, and the sheet has a light reflectance of 98% or more and a light transmittance of less than 1%. It is excellent in a flame retardancy and a reflection characteristic. Also, the light reflection sheet (II) of the present invention is prepared by providing a light-fast layer which cuts or absorbs a UV ray in a thickness of 0.5 to 20 ?m on at least one face of a base sheet having a thickness of 0.4 to 2 mm and comprising a PC resin composition containing a combination of 85 to 60 mass % of (A) a PC base polymer and 15 to 40 mass % of (B) titanium oxide. It is less yellowed and less reduced in a reflection characteristic even after used for a long period of time.

Abstract: A polycarbonate resin composition which has excellent flame retardancy, even when containing neither any phosphorus compound flame retardant nor any halogenated flame retardant, and which is highly reflective and has light-shutting properties and excellent thermal stability. The polycarbonate resin composition comprises 5 to 98 parts by weight of a polycarbonate/polyorganosiloxane copolymer, 0 to 93 parts by weight of a polycarbonate resin, 2 to 50 parts by weight of titanium oxide, 0 to 1.0 parts by weight of a fibril-forming polytetrafluoroethylene, and 0.05 to 2.0 parts by weight of an organosiloxane, the sum of the ingredients (A), (B), and (C) is 100 parts by weight.

Abstract: The invention relates to a styrene resin material, especially a styrene-based resin composition having good high-speed castability and good spreadability and favorable to extrusion molding lines. Of the styrene-based resin material, the product of the melt index (MI, g/10 min) and the melt tension (MT, g) measured under a specific condition is at least 20. Concretely, for example, it is a styrene-based resin composition comprising (A) from 35 to 95% by weight of a styrenic polymer having a syndiotactic structure, (B) from 5 to 50% by weight of a specific polyethylenic resin, and (C) from 0 to 15% by weight (including 0) of a specific styrene-olefin copolymer.

Abstract: There are disclosed a polystyrenic stretched film which comprises a styrenic resin composition containing 70 to 100% by weight of a styrenic polymer having a high degree of the syndiotactic configuration, and has a crystallinity of 35% or more, a dispersion of thickness of 8% or less, and a dispersion of birefringence in 1000 cm.sup.2 of 20% or less, and a process for producing the polystyrenic stretched film. There are also disclosed a photographic film, a process film for printing, and a film for over-head projectors comprising the polystyrenic stretched film.According to the present invention, a stretched film having excellent uniformity of thickness and showing little deformation such as warp, striation, and waviness after heating can be provided.