Abstract: Provided is a polycarbonate resin composition having excellent impact strength, molding residence stability, and dry heat resistance and that maintains high total light transmittance while suppressing light transmittance in a specific ultraviolet region, that is, harmful wavelengths near 420 nm. The polycarbonate resin composition of the present disclosure includes 0.1-1.5 mass part of an additive (B) per 100 mass parts of a polycarbonate resin (A) having a viscosity average molecular weight of 21,000-26,000 and includes 0.

Abstract: A resin composition comprising an aromatic polycarbonate resin having excellent transparency and flame retardancy. The resin composition comprises 100 parts by weight of an aromatic polycarbonate resin having a branched structure with a branching ratio of 0.7 to 1.1 mol % (component A) and 0.005 to 12 parts by weight of at least one flame retardant.

Abstract: A resin composition comprising an aromatic polycarbonate resin and having excellent transparency and flame retardancy. The resin composition comprises 100 parts by weight of the aromatic polycarbonate resin having a branched structure with a branching ratio of 0.7 to 1.1 mol % (component A) and 0.005 to 12 parts by weight of a flame retardant.

Abstract: A resin composition consisting of: (1) 100 parts by weight of an aromatic polycarbonate resin; (2) 0.008 to 0.13 part by weight of an alkali metal salt of a perfluoroalkylsulfonic acid having a fluoride ion content measured by ion chromatography of 0.2 to 1 ppm in terms of weight based on the weight of component B; and (3) 0.01 to 5 parts by weight of silicone having a Si—H group and a phenyl group. A process of manufacturing the resin composition and a method of preventing the melt dripping during combustion of the resin composition. The flame retardancy of the above aromatic polycarbonate resin composition comprising the fluorine-containing organic metal salt compound is improved.

Abstract: A resin composition comprising: (1) 100 parts by weight of an aromatic polycarbonate resin (component A); (2) 0.005 to 0.6 part by weight of a fluorine-containing organic metal salt having a fluoride ion content measured by ion chromatography of 0.2 to 20 ppm in terms of weight (component B); and (3) at least one component selected from the group consisting of a flame retardant (component C), a fatty acid ester (component D), an ultraviolet light absorber (component E), polytetrafluoroethylene having fibril formability (component F), a filler (component G), a silicate mineral (component H) and a titanium dioxide pigment (component I). A process of manufacturing the resin compositon and a method of preventing the melt dripping during combustion of the resin composition. The flame retardancy of the above aromatic polycarbonate resin composition comprising the fluorine-containing organic metal salt compound is improved.

Abstract: A process for the production of an aromatic phosphorus-containing polymer, comprising (i) reacting phosphorus pentachloride with an aromatic dihydroxy compound and then reacting the reaction product with an aromatic monohydroxy compound, or (ii) allowing phosphorus pentachloride, an aromatic dihydroxy compound and an aromatic monohydroxy compound to react concurrently, to form an intermediate polymer, and then hydrolyzing the intermediate polymer, the above process being capable of giving an aromatic phosphorus-containing polymer in the absence of a catalyst for a short period of time at a relatively low temperature.

Abstract: There is provided a fire retardant polycarbonate resin composition comprising a polycarbonate resin, a specific partially esterified phosphoric acid metal salt and a specific partially esterified phosphoric acid in specific proportions. The polycarbonate resin composition can provide a transparent molded article which are excellent in fire retardance and heat stability.