Flame-retardant aromatic polycarbonate resin composition

Abstract

The present invention relates to a polycarbonate resin composition having an excellent balance between various properties such as flame retardancy, transparency, hue and thermal stability. The flame-retardant aromatic polycarbonate resin composition comprises 100 parts by weight of an aromatic polycarbonate resin; and 0.001 to 0.5 parts by weight of a non-halogen-based aromatic sulfonic acid metal salt compound represented by the following general formula (1): wherein R 1 is a hydrogen atom or an alkyl group having 1 to 10 carbon atoms; R 2 is a hydrogen atom, an alkyl group having 1 to 7 carbon atoms, an aralkyl group having 6 to 20 carbon atoms or an aryl group having 5 to 15 carbon atoms; and M is rubidium (Rb), cesium (Cs) or francium (Fr).

Description

technical field [0001] The present invention relates to an aromatic polycarbonate resin composition, and relates in detail to a flame-retardant aromatic polycarbonate resin composition and an aromatic polycarbonate resin molded article excellent in flame retardancy, transparency, hue, and humidity-heat hue stability , especially transparent sheet-like parts. Background technique [0002] Aromatic polycarbonate resins are excellent in heat resistance, mechanical properties, and electrical properties, and are widely used in automotive materials, electrical / electronic device materials, and housing materials. In particular, flame-retardant aromatic polycarbonate resin compositions are used as components of OA / information equipment such as computers, notebook computers, mobile phones, printers, and copiers. [0003] As a method of imparting flame retardancy to an aromatic polycarbonate resin, a method of using a halogen-based, phosphorus-based, silicon-based, inorganic-based, or...

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Problems solved by technology

[0008] However, the aromatic polycarbonate resin composition obtained in this way also has the problem that the use of the halogen-containing substance is restricted due to concerns about bioaccumulation and environmental concerns.

In addition, even if such a non-halogen-based aromatic sulfonic acid metal salt is used, the obtained polycarbonate resin composition cannot be said to be good in both flame retardancy and hue, and there is a problem that the balance of physical properties is insufficient.

[0009] In addition, even if these additives are used, there is a problem that their use is limited due to the shape and molding conditions of the resin molded body

Specifically, in order to suppress "sinking" in a special-shaped resin molded body having a thick-walled part, and to obtain a good surface appearance of the resin molded body, the cooling time of the mold after injection molding is usually prolonged, and the mold is slowly cooled (slowly cooled). When cold), there is a fatal problem that the obtained resin molded body becomes cloudy (deterioration of slow cooling cloudiness resistance)

[0010] Moreover, such a problem is that even in the extrusion molding of resin molded articles for obtaining films and thick-walled sheet parts, the central part of the thick wall becomes cloudy due to slow cooling, which becomes a problem that leads to aromatic polycarbonate resins. The reason why the excellent transparency of the composition is greatly reduced

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