| 摘要 |
PROBLEM TO BE SOLVED: To provide a spinning dope for acrylic fiber as carbon fiber precursor free from gelling tendency over a wide temperature range and having high productivity, a method for producing an acrylic fiber as carbon fiber precursor by using the spinning dope and an acrylic fiber as carbon fiber precursor produced by the production method. SOLUTION: The spinning dope for acrylic fiber as carbon fiber precursor is produced by dissolving an acrylonitrile copolymer containing a carboxylic acid ester group in a solvent, wherein the carboxylic acid ester group is eliminated by heating at≥120°C and <300°C. Good productivity can be achieved by the use of the spinning dope without causing the gelling trouble in the production, storage, etc., of the spinning dope. The carbon fiber precursor free from defect can be produced by using the spinning dope to obtain a high-performance carbon fiber. COPYRIGHT: (C)2007,JPO&INPIT
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