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Aromatic polycarbonate resin composition for sheet storage/transport container

A technology of polycarbonate resin and resin composition, applied in semiconductor/solid-state device manufacturing, electrical components, circuits, etc., can solve problems such as cracking of molded products, reduction in yield, reduction in critical stress, etc.

Active Publication Date: 2015-10-14
TEIJIN LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the critical stress of polycarbonate resin molded articles in contact with these epoxy compounds is lowered, adding epoxy compounds to molded articles that are large in size and have complex shapes and relatively large residual stresses (such as sheet storage and shipping container) making it likely to cause cracking of molded articles, resulting in lower yields

Method used

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  • Aromatic polycarbonate resin composition for sheet storage/transport container
  • Aromatic polycarbonate resin composition for sheet storage/transport container
  • Aromatic polycarbonate resin composition for sheet storage/transport container

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0129] 2,194 parts of ion-exchanged water and 402 parts of 48% aqueous sodium hydroxide solution were supplied to a reactor equipped with a thermometer, a stirrer and a reflux condenser, and 575 parts of 2,2-bis(4-hydroxyphenyl)propane and 1.2 parts of bisulfite were dissolved in the obtained solution, 1,810 parts of methylene chloride were added, and 283 parts of phosgene treated with activated carbon were blown into the reactor at 15 to 25° C. for 40 minutes with stirring. After blowing into phosgene, 72 parts of 48% aqueous sodium hydroxide solution and 18.5 parts of p-tert-butylphenol were added to the resulting solution, stirred and emulsified, and after 10 minutes, the emulsified product was processed by a high-speed stirrer at a temperature of 30 to 33 ° C. The obtained product was left without stirring for 3 hours at temperature to terminate the reaction.

[0130] After the reaction was finished, 1,810 parts of methylene chloride was added to the reaction product and m...

Embodiment 2

[0134] The operation of Example 1 was repeated, except that the amount of p-tert-butylphenol to be added was changed to 14.9 parts.

Embodiment 3

[0136] The operation of Example 1 was repeated except that the phosgene used as raw material was not treated with activated carbon.

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Abstract

The object of the present invention is to provide a polycarbonate resin composition for sheet storage / transportation containers, which can reduce surface contamination of sheets sensitive to surface contamination (for example, semiconductor wafers or magnetic disks) Exhibits excellent release properties. The present invention is a polycarbonate resin composition for a sheet storage / transportation container, the resin composition comprising [I] 100 parts by weight of an aromatic polycarbonate resin and [II] 0.01 to 0.5 parts by weight ( B parts by weight) an ester compound whose average degree of esterification is 30% to 99% (A%) of the full ester, which is composed of polyhydric alcohol and higher fatty acid, wherein the resin composition is characterized by: (i) chlorine atom content 5ppm or less, (ii) carbon tetrachloride content is 3ppm or less, (iii) the total content of one or more C6-18 phenolic compounds is 40ppm or less, (iv) sodium atoms and The total content of iron atoms is 0.1 ppm or less, and (v) satisfies the following formula (1): 0.1≦(100-A)×B≦10.0.

Description

technical field [0001] The present invention relates to an aromatic polycarbonate resin composition for use in sheet storage and transport containers for storing or transporting magnetic disks or wafers to be processed into integrated circuit chips. More specifically, it relates to a resin composition for sheet storage and transportation containers, which has excellent releasability at the time of molding and suppresses the generation of metal atoms and volatile gases to a certain extent so that they do not cause Such as the problem of surface contamination of semiconductor wafers or magnetic disks. Background technique [0002] In general, containers used to store and transport sheets with surfaces susceptible to contamination, such as wafers or magnetic disks, maintain the cleanliness of the wafer surface at all times during transport. To this end, the container is molded from synthetic resins, such as general-purpose resins such as polypropylene, polyethylene, acrylonitr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L69/00C08K5/103
CPCC08K5/103H01L21/67366C08L69/00
Inventor 清水敦
Owner TEIJIN LTD