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Antiflaming optical diffusion polycarbonate resin composition

A technology of polycarbonate resin and resin composition, which is applied in the field of flame-retardant light-diffusing polycarbonate resin composition, and can solve problems such as undisclosed technical solutions

Inactive Publication Date: 2009-05-06
TEIJIN KASEK KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] In Patent Document 5, although it is described that flame retardant properties are imparted by organic acid metal salts and polytetrafluoroethylene, it cannot be considered that sufficient flame retardant properties and optical properties have been satisfied, and therefore no effective solution to solve this technical problem has been disclosed. technical solutions

Method used

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  • Antiflaming optical diffusion polycarbonate resin composition
  • Antiflaming optical diffusion polycarbonate resin composition
  • Antiflaming optical diffusion polycarbonate resin composition

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Embodiment approach

[0183] Hereinafter, the present invention will be described in detail through examples. In addition, evaluation was performed by the following method.

[0184] The resin compositions described in Table 1 were produced by the following methods. The components in the proportions in Table 1 were weighed and uniformly mixed using a tumbler, and then the mixture was charged into an extruder to prepare a resin composition. As the extruder, a vented twin-screw extruder (KTX-30, manufactured by Kobe Steel Works, Ltd.) with a diameter of 30 mmφ was used. The strands are extruded under the condition that the cylinder temperature and the mold temperature are both 280°C and the vacuum degree of the exhaust part: 3000Pa, and then, after cooling in a water bath, the strands are cut with a granulator to obtain pellets. Use a hot air circulation dryer to dry the obtained granules at 120°C for 6 hours, then pass through an injection molding machine (IS150EN-5Y, manufactured by Toshiba Machin...

Embodiment 1～16 and comparative example 1～8

[0189] The content of each component represented by the symbol in Table 1 is as follows.

[0190] (A component)

[0191] PC-1: linear aromatic polycarbonate resin powder (Panlite L-1225WP (trade name) synthesized from bisphenol A, p-tert-butylphenol as a terminal stopper, and phosgene by interfacial polycondensation The average molecular weight is 22400, manufactured by Teijin Chemicals Co., Ltd.)

[0192] PC-2: Linear aromatic polycarbonate resin powder (L-1225WX (trade name), viscosity-average molecular weight For 19700, manufactured by Teijin Chemicals Co., Ltd.)

[0193] (B component)

[0194] B-1: bead-shaped cross-linked silicon (TOSUPAR 120 (trade name), average particle diameter 2 μm, manufactured by Toshiba Silicone Co., Ltd.)

[0195] B-2: Bead-shaped cross-linked acrylic particles (MBX-5 (trade name), average particle diameter 5 μm, manufactured by Sekisui Chemical Industry Co., Ltd.)

[0196] (C component)

[0197] C-1: Phosphate ester mainly composed of reso...

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Abstract

An objective of the invention is to provide a flame-proof light-diffusing polycarbonate resin composition which can simultaneously satisfy the excellent optical characteristic and high flame-proof characteristic of light-diffusing polycarbonate. According to the invention, the flame-proof light-diffusing polycarbonate resin composition is provided, wherein the resin composition comprises the following components: 100 weight parts of aromatic polycarbonate resin (A component); more than 0.005 weight parts of optical diffusing agent (B component) relatively to the aromatic polycarbonate resin; 0.001-20 weight parts of flame retardant (C component) relatively to aromatic polycarbonate resin; and 0.01-5 weight parts of polytetrafluoroethylene (D component) relatively to the aromatic polycarbonate resin, wherein the polytetrafluoroethylene has protofiber forming capability. Furthermore the total amount of B component and D component is 0.03-8 weight parts.

Description

technical field [0001] The invention relates to a flame-retardant light-diffusing polycarbonate resin composition. More specifically, it relates to a flame-retardant light-diffusing polycarbonate resin composition capable of satisfying both the excellent optical properties and high flame-retardant properties of light-diffusing polycarbonate. Background technique [0002] Conventionally, it has been widely used in transparent resins such as aromatic polycarbonate resins, acrylic resins, and styrene resins for various lighting covers, display covers, automotive meters, and various signages that require light diffusion. Materials for dispersing organic or inorganic light diffusing agents. Among such transparent resins, especially aromatic polycarbonate is widely used as a resin having high light transmittance because of its excellent mechanical properties, heat resistance, and weather resistance. In addition, as the light diffusing agent, there are organic particles having a ...

Claims

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Application Information

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IPC IPC(8): C08L69/00C08L27/18C08L33/04C08L83/04C08K5/523C08K5/42
Inventor 池松龙介村井麻衣子
Owner TEIJIN KASEK KK
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