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Aromatic polycarbonate resin composition, process for producing resin composition, and molded article

A technology of polycarbonate resin and production method, applied in the field of resin molded products, to achieve the effects of excellent flame retardancy, excellent appearance, and excellent molding stability

Active Publication Date: 2012-02-01
MITSUBISHI ENG PLASTICS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, only by surface-treating titanium oxide with polyorganosiloxane tends to be prone to poor appearance such as crazing

Method used

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  • Aromatic polycarbonate resin composition, process for producing resin composition, and molded article
  • Aromatic polycarbonate resin composition, process for producing resin composition, and molded article
  • Aromatic polycarbonate resin composition, process for producing resin composition, and molded article

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-6 and comparative example 1-12

[0263] Each of the above components was blended at the ratios (parts by weight) shown in Tables 2-4, mixed by drum, and then fed to a twin-screw extruder (12 blocks, TEX30XCT) manufactured by Japan Steel Works, Ltd. ) in the hopper (hopper). Each resin component was melt-kneaded under conditions of cylinder temperature: 270°C, 200 rpm, and extrusion speed: 25 kg / hour. The molten resin composition extruded in strand form was quenched in a water bath, and pelletized by a pelletizer to obtain polycarbonate resin composition pellets described in Tables 2-4. The obtained resin composition was evaluated for each item by the above-mentioned method.

[0264] The results are shown in Tables 2-4.

[0265] [Table 2]

[0266]

[0267] [table 3]

[0268]

[0269] [Table 4]

[0270]

[0271] From the results shown in Table 2, the following can be found.

[0272] The resin compositions according to Examples 1-6 of the present invention have excellent thermal stability, flammab...

Embodiment 7-13 and comparative example 13-14

[0275] [material to use]

[0276] The raw materials used in Examples 7-13 and Comparative Examples 13-14 are as follows.

[0277]

[0278] The same "Iupiron (registered trademark) H-3000" as used in the aforementioned Examples 1-6 and Comparative Examples 1-12 was used.

[0279]

[0280] The titanium oxide-based additive (B-1) used in the preceding examples was used: trade name "Kronos 2233", produced by Kronos Titan GmbH. (particle size: 0.20 μm, Al content a: 0.46% by weight, carbon content c: 0.49 % by weight, a / d 2 =11.4, c / d 2 = 12.25).

[0281]

[0282] Aromatic sulfonic acid metal salt compounds (C-3)-(C-5)

[0283] Various metal aromatic sulfonate salts with different pH were prepared as follows.

[0284] p-Toluenesulfonic acid was dissolved in ion-exchanged water to prepare a 20% aqueous solution. Thereafter, aqueous sodium p-toluenesulfonate solutions having different pHs were prepared by adding aqueous sodium hydroxide solution while adjusting the additi...

Embodiment 14-15 and comparative example 15

[0307] [material to use]

[0308] The raw materials used in Examples 14-15 and Comparative Example 15 are as follows.

[0309]

[0310] The same polycarbonate resin as used in the foregoing Examples and Comparative Examples was used.

[0311]

[0312] Titanium oxide-based additive (B-1) produced by Kronos Titan GmbH. used previously: trade name "Kronos 2233" (particle size d: 0.20 μm, Al content "a": 0.46% by weight, carbon content: 0.49% by weight %, a / d 2 =11.4, c / d 2 = 12.25).

[0313]

[0314] Sodium p-toluenesulfonate (NATS(C-1)) used in the previous examples was used.

[0315]

[0316] (D-1) "Polyflon F-201L", produced by Daikin Industries, Ltd.

[0317]

[0318] The same heat stabilizer (E-1), heat stabilizer (E-2) and release agent (F) as those used in the aforementioned Examples 1-6 and Comparative Examples 1-12 were used.

[0319] The above-mentioned components were blended at the ratios (parts by weight) shown in Table 6, mixed by a drum, and then fe...

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Abstract

Disclosed is an aromatic polycarbonate composition having excellent thermal stability, excellent flame retardancy and excellent light reflectivity. Also disclosed is a light-reflecting member comprising a molded resin article produced from the aromatic polycarbonate composition. The aromatic polycarbonate resin composition is characterized by comprising 100 parts by mass of an aromatic polycarbonate resin (A), 3 to 30 parts by mass of a titanium oxide additive (B) having a surface treated with alumina and an organosiloxane, 0.05 to 0.9 part by mass of an aromatic sulfonic acid metal salt (C) and 0.01 to 1.5 parts by mass of polytetrafluoroethylene (D), wherein the content (a) (% by mass) of aluminum in the titanium oxide additive (B), the carbon content (c) (% by mass) and the average particle diameter (d) ([mu]m) of titanium oxide meet the requirements represented by formulae (1); and (2). Formula (1): 6.5 = (a / d2) = 15 Formula (2): 5 = (c / d2) = 25.

Description

technical field [0001] The present invention relates to an aromatic polycarbonate resin composition, a method for producing the resin composition, and molded articles, and to an aromatic polycarbonate resin composition excellent in thermal stability and flame retardancy, the aromatic polycarbonate The ester resin composition includes a combination of titanium oxide and an aromatic sulfonic acid metal salt having a specific composition. More specifically, the present invention relates to polycarbonates having excellent optical characteristics such as light reflectance, light-blocking effect, light fastness, hue, and further excellent thermal stability, flame retardancy, and appearance while maintaining polycarbonate An aromatic polycarbonate resin composition having inherent mechanical properties of the resin, and a molded article of the resin. Background technique [0002] Since polycarbonate resins are excellent in transparency, mechanical properties, electrical properties...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L69/00C08K5/42C08K9/06C08L27/14G02B5/08
CPCG02B1/04C08K2201/005C08K9/06C08L69/00C08K5/42C08K9/02C08L27/18
Inventor 黑川晴彦小川泰史白石丰
Owner MITSUBISHI ENG PLASTICS CORP
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