Title:
PRECISION MEMBER ACCOMMODATION CONTAINER AND MANUFACTURING METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2018/124612
Kind Code:
A1
Abstract:
A precision member accommodation container of the present invention is formed from a polycarbonate resin, wherein the polycarbonate resin is an extrusion product obtained by extruding a polymer, which is prepared by melt polymerizing an aromatic dihydroxy compound and a diaryl carbonate, while carrying out venting with an extruder having vent equipment attached at the end thereof, and pelletizing the same, and is characterized in that the amount of chloride ion (Cl-) is approximately 2.0 ppb or less, the rates of weight change in distilled water, ethanol, or n-heptane solvent, according to the following formula 1, are respectively 0.03% or less, the amount of remaining monomers measured by HPLC-GC/MS is approximately 500 ppm or less, and the amount of alkali metal ions measured by ICP-MS is approximately 50-200 ppb.
[Formula 1]
Rate of weight change (W) = (W1/W0) * 100
In formula 1, W1 is the weight of pellets after carrying out extraction on 100 g of pellets with each solvent for six hours, and removing the solvent, and W0 is the weight of the pellets before the extraction.
Inventors:
JANG HYUN HYE (KR)
CHEI WOO SUK (KR)
CHI JUN HO (KR)
CHEI WOO SUK (KR)
CHI JUN HO (KR)
Application Number:
PCT/KR2017/015148
Publication Date:
July 05, 2018
Filing Date:
December 20, 2017
Export Citation:
Assignee:
LOTTE ADVANCED MAT CO LTD (KR)
International Classes:
C08L69/00; B29B11/10; B29C45/00; C08G64/04; C08G64/30
Foreign References:
| KR20160137462A | 2016-11-30 | |||
| JP2007012793A | 2007-01-18 | |||
| JPH1143539A | 1999-02-16 | |||
| KR19980081239A | 1998-11-25 | |||
| KR20120101665A | 2012-09-14 |
Attorney, Agent or Firm:
AJU INTERNATIONAL LAW & PATENT GROUP (KR)
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