Process for preparing polyketone fibres
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Dec 17, 2002
Grant Date -
N/A
app pub date -
Jul 28, 2000
filing date -
Feb 12, 1998
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The invention pertains to a process for preparing thermoplastic fibres by melt-spinning an alternating co-polymer composed of alkenes and carbon monoxide in which the polymer is heated to a temperature of at least T.sub.NF +5.degree. C., with T.sub.NF being the temperature at which the molten polymer is free of crystallization nuclei, and where the residence time of the polymer at a single temperature or different temperatures above the polymer melting point satisfies: ##EQU1## wherein t.sub.n is the residence time (in minutes) of the polymer at a temperature T.sub.n (in K, with T.sub.n >T.sub.m) and A and B are determined by measuring the viscosity of the polymer at different temperatures and residence times.
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