Method for producing hollow rayon fibers
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jun 24, 2003
Grant Date -
Sep 26, 2002
app pub date -
Jan 4, 2002
filing date -
Jan 18, 2001
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
Disclosed is a simple and safe method for producing hollow rayon fibers, which are light and heat-insulating. The fibers, having a cross section of FIG. 1, are produced by forming a cellulose layer with a mixed crystalline structure of cellulose II and IV through selective saponification of a portion of cellulose acetate fibers with the use of alkali, followed by dissolving a portion which remains unsaponified, with the use of an organic solvent.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
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