Processes for producing nano-space controlled polymer ion-exchange membranes
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Oct 2, 2007
Grant Date -
Mar 3, 2005
app pub date -
Aug 6, 2004
filing date -
Aug 28, 2003
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A polymer film substrate is irradiated with ions to make a large number of nano-sized through-holes and the substrate is further irradiated with an ionizing radiation so that a functional monomer is grafted or co-grafted onto a surface of the film and within the holes; in addition, the sulfonic acid group is introduced into the graft chains, thereby producing a polymer ion-exchange membrane that has high oxidation resistance, dimensional stability, electrical conductivity and methanol resistance, as well as an ion-exchange capacity controlled over a wide range.
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