Dope and process for the production of fiber from the dope

Details Dope and process for the production of fiber from the dope Dope and process for the production of fiber from the dope

2006-11-01

2010-11-23

Boykin, Terressa M (Department: 1796)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From carboxylic acid or derivative thereof

C051S298000, C264S010000, C521S154000, C528S026000, C528S336000

Reexamination Certificate

active

07838622

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),wherein Ar1represents 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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