Dope and process for the production of fiber from the dope
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United States of America Patent
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Nov 23, 2010
Grant Date -
May 21, 2009
app pub date -
Nov 1, 2006
filing date -
Nov 2, 2005
priority date (Note) -
Expired
status (Latency Note)
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Abstract
This invention is to provide a dope that has excellent formability and can be formed into a fiber, a film, pulp-shaped particles and the like by a wet method. This invention is also to provide a process for the production of a fiber excellent in heat resistance, strength and elastic modulus. This invention provides a dope and a process for the production of a fiber from the dope, the dope including a polyamide and a basic solvent, the polyamide containing a recurring unit of the following formula (I),represents at least one substituent selected from the group consisting ofand having an inherent viscosity of 1.0 or more, the dope has a polyamide concentration of over 10% by weight but not more than 25% by weight and exhibits optical anisotropy at 50° C.
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