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Polyethylene resin as a material of a container for a high purity chemical, and a container for a high purity chemical made thereof

Patent
US-6225424-B1
Inventor

NISHIKAWA HIROAKI (JP)

OGUSU TATSUHIKO (JP)

Assignee
TOSOH CORP (US)
Country
United States
Dates
  • Priority:
    1997/09/03
  • Grant:
    2001/05/01
Description
This web page summarizes information in PubChem about patent US-6225424-B1. This includes chemicals mentioned, as reported by PubChem contributors, as well as other content, such as title, abstract, and International Patent Classification (IPC) codes. To read more about how this page was constructed, please visit the PubChem patents help page.

1 Abstract

This invention aims at providing a polyethylene resin suitably used as a material of the container for a high purity chemical, which permits substantially no transference of fine particles and dissolution of metals into the chemical being minimized. This object is acheived by using a polyethylene resin having (1) to (5) properties described below as a material of the container for a high purity chemical:(1) a density of 0.94-0.97 g/cm3;(2) a melt flow rate under a load of 21.6 Kg at 190° C. of 2-50 g/10 minutes;(3) a ratio (Mw/Mn) of average molecular weight in weight (Mw) against average molecular weight in number (Mn) determined by gel permeation chromatography (GPC) of 8-15;(4) an extractable matter by boiling normal hexane of 0.1 weight % or less; and(5) a chlorine content of 15PPM or less with respect to the weight of polyethylene resin.

2 Full Text

3 Important Dates

3.1 Priority Date

1997/09/03

3.2 Filing Date

1998/09/02

3.3 Publication Date

2001/05/01

3.4 Grant Date

2001/05/01

4 Inventor

NISHIKAWA HIROAKI (JP)

OGUSU TATSUHIKO (JP)

5 Assignee

TOSOH CORP (US)

6 Country

United States

7 Linked Chemicals

7.1 PubChem Compounds

7.2 PubChem Substances

8 Patent Family

9 Classification

9.1 IPC

C08F10/02 (inventive)

C08F4/658 (inventive)

A61J1/05 (inventive)

C08K5/04 (inventive)

C08L23/04 (inventive)

B65D1/00 (inventive, first)

C08F297/08 (inventive)

C08F210/16

9.2 CPC

Y10T428/1352

C08F297/08 (inventive, first)

C08F10/02 (inventive)

C08F210/16

10 Citations

11 Cited By

12 Similar Patents

13 Information Sources

  1. Google Patents
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    https://creativecommons.org/licenses/by/4.0/legalcode
  2. PubChem
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