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Polycarbonate resin composition and molded article

A technology of polycarbonate resin and composition, which is applied in the field of polycarbonate resin composition and molded products, which can solve the problems of poor light resistance and achieve the effects of excellent scratch resistance, excellent jet blackness and high surface hardness

Active Publication Date: 2019-08-16
MITSUBISHI ENG PLASTICS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the surface hardness of this resin composition is equivalent to that of ordinary polycarbonate resins, and since organic dyes are used, there is a problem that light resistance is inferior to that of pigment systems.

Method used

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  • Polycarbonate resin composition and molded article
  • Polycarbonate resin composition and molded article
  • Polycarbonate resin composition and molded article

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0229] Hereinafter, an Example is shown and this invention is demonstrated more concretely. However, the present invention is not limited to the following Examples, and can be implemented with any changes within a range not departing from the gist of the present invention.

[0230] The raw material components used in the following examples and comparative examples are shown in Table 1 below.

[0231] [Table 1]

[0232]

[0233] In the above-mentioned Table 1, the polycarbonate resins (B1) and (B2) used as the polycarbonate resin (B) were produced by the following production examples.

manufacture example 1

[0234]

[0235] Put 2,2-bis(3-methyl-4-hydroxyphenyl)propane (hereinafter referred to as "BPC") in a SUS reactor (inner volume: 10 liters) equipped with a stirrer and distillation condensing device 26.14 mol (6.75 kg) and 26.79 mol (5.74 kg) of diphenyl carbonate, after replacing the inside of the reactor with nitrogen, the temperature was raised to 220°C over 30 minutes under a nitrogen atmosphere.

[0236] Then, the reaction solution in the reactor was stirred, and cesium carbonate (Cs 2 CO 3 ), making it 1.5×10 moles relative to BPC1 -6 mol, the reaction liquid was stirred and matured at 220° C. for 30 minutes under a nitrogen atmosphere. Next, at the same temperature, the pressure in the reactor was reduced to 100 Torr over 40 minutes, and the reaction was carried out for 100 minutes to distill off phenol.

[0237] Next, the temperature in the reactor was raised to 284°C over 60 minutes and the pressure was reduced to 3 Torr to distill out substantially the total amou...

manufacture example 2

[0242]

[0243] Put 26.14 moles (6.75 kg) of BPC and 26.79 moles (5.74 kg) of diphenyl carbonate into a SUS reactor (inner volume: 10 liters) equipped with a stirrer and distillation condensing device, and replace the reactor with nitrogen Thereafter, the temperature was raised to 220° C. over 30 minutes under a nitrogen atmosphere.

[0244] Then, the reaction solution in the reactor was stirred, and cesium carbonate (Cs 2 CO 3 ), making it 1.5×10 moles relative to BPC1 -6 mol, the reaction liquid was stirred and matured at 220° C. for 30 minutes under a nitrogen atmosphere. Next, at the same temperature, the pressure in the reactor was reduced to 100 Torr over 40 minutes, and the reaction was carried out for 100 minutes to distill off phenol.

[0245] Next, the temperature in the reactor was raised to 284°C over 60 minutes and the pressure was reduced to 3 Torr to distill out substantially the total amount of phenol corresponding to the theoretical amount. Next, at the ...

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Abstract

A polycarbonate resin composition which comprises a bisphenol A type polycarbonate resin (A), a polycarbonate resin (B) having a structural unit represented by general formula (1), and a styrene-basedresin (C) containing no constituent unit derived from butadiene, characterized in that the ratio of the content of the polycarbonate resin (A) to the content of the polycarbonate resin (B), (A) / (B),is (0-80) / (20-100) by mass and the content of the styrene-based resin (C) containing no constituent unit derived from butadiene is 1-30 parts by mass per 100 parts by mass of the sum of the polycarbonate resins (A) and (B).

Description

technical field [0001] The present invention relates to a polycarbonate resin composition and a molded article. Specifically, it relates to a polycarbonate resin combination having impact resistance, high pencil hardness, excellent color rendering, and good nail scratch resistance objects and their moldings. Background technique [0002] Polycarbonate resins are excellent in mechanical strength, electrical properties, transparency, etc., and are widely used as engineering plastics in various fields such as the field of electrical and electronic equipment and the field of automobiles. [0003] However, bisphenol A-type polycarbonate resins have problems such as high melt viscosity and poor molding processability. Compared with the case of carbonate resin alone, the formability is improved, and compared with the case of ABS resin alone, the impact resistance and heat resistance can be improved, so it is used as a material that combines strength, heat resistance and formabilit...

Claims

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Application Information

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IPC IPC(8): C08L69/00C08L25/04C08L51/06
CPCC08L25/04C08L51/06C08L69/00
Inventor 高桥和幸
Owner MITSUBISHI ENG PLASTICS CORP
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