Method for dissolving aramid polymer in sulfuric acid using a double shaft kneader
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Nov 13, 2012
Grant Date -
Mar 11, 2010
app pub date -
Jan 30, 2008
filing date -
Feb 3, 2007
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A method for dissolving an aramid polymer in sulfuric acid using a double shaft kneader, comprising the steps: dosing the polymer and the solvent into the kneader, mixing the polymer and the solvent to dissolve the polymer in the solvent for obtaining a solution, degassing the solution to obtain a spin dope, and transporting the spin dope out of the kneader, wherein the polymer is an aramid polymer and the solvent is sulfuric acid, and whereby the aramid polymer is dosed into the kneader prior to dosing the sulfuric acid into the kneader.
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