Method for producing of ultra-clean and high-purity electronic grade acetic acid
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Nov 19, 2013
Grant Date -
Mar 22, 2012
app pub date -
Oct 28, 2010
filing date -
Sep 17, 2010
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A method for producing of ultra-clean and high-purity electronic acetic acid is disclosed. The method including following steps: Step 1, industrial acetic acid is fast distilled; Step 2, filtering the fraction by membrane of 0.05˜0.3 μm aperture; Step 3, rectification; Step 4, membrane filtration again. Due to the adoption of the technical scheme above, the ultra-clean and high-purity electronic grade acetic acid which purity is 99.8% is produced. The content of single metal ion is lower than 1 ppb and the content of particulates which is ≧0.5 μm is lower than 5 pcs/ml. The method of the invention will help to reduce energy consumption, to simplify the operation, and to achieve the high security.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully