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 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 polycarbonate resin composition favorable for parts of electric and electronic appliances. The composition comprises (a) from 65 to 95% by weight of a polycarbonate resin, (b) from 3 to 20% by weight of glass having a refractive index of from 1.570 to 1.600, and (c) from 2 to 15% by weight of a plasticizer, or is prepared by adding (a) from 0.01 to 5 parts by weight of metal-coated glass flakes, and (b) from 0.01 to 2 parts by weight of at least one stabilizer selected from phosphites, hindered phenolic compounds, epoxy compounds and benzotriazole compounds, to 100 parts by weight of a polycarbonate resin.

Abstract: Provided are a polycarbonate resin composition comprising 100 parts by weight of a polycarbonate and from 0.001 to 15 parts by weight of a benzotriazole-type UV absorbent and/or a benzophenone-type UV absorbent, and having a sulfur content of at most 50 ppb; and its sheet moldings. The resin composition and its sheet moldings have good weather resistance and heat stability.

Abstract: This invention relates to a composition of a halogen-containing resin such as polyvinyl chloride in which the occurrence of a chalking phenomenon by light is prevented by including a specific copper salt.

Abstract: This invention relates to synthetic resin compositions comprising a mixed product of (a) a compound having at least one piperidyl group, (b) perchloric acid and (c) optionally an inorganic substance other than perchloric acid in an amount of 0.01-10 parts by weight based on a synthetic resin, for example, a halogen-containing resin.The compositions of this invention exhibit very excellent light resistance and heat resistance.

Abstract: This invention relates to a composition of a halogen-containing resin such as polyvinyl chloride in which the occurrence of a chalking phenomenon by light is prevented by including a specific copper salt.