ACRYLONITRILE-BASED COPOLYMER, POLYACRYLONITRILE-BASED CARBON FIBER PRECURSOR FIBER AND METHOD FOR PRODUCING CARBON FIBER

• Main Authors: MATSUMOTO NAOHIRO, SADO YUKI, WATANABE FUMIYOSHI
• Format: Patent
• Language: English; Japanese
• Published: 22.10.2015
• Subjects: APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBONFILAMENTS; CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS,THREADS, FIBRES, BRISTLES OR RIBBONS; CHEMISTRY; COMPOSITIONS BASED THEREON; MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS; METALLURGY; NATURAL OR ARTIFICIAL THREADS OR FIBRES; ORGANIC MACROMOLECULAR COMPOUNDS; SPINNING; TEXTILES; THEIR PREPARATION OR CHEMICAL WORKING-UP

PROBLEM TO BE SOLVED: To provide a method for improving a carbonization yield without damaging productivity and processing properties in a carbon fiber production process.SOLUTION: Provided is an acrylonitrile-based copolymer by being copolymerized with a styrene derivative in which the Q value of Alfrey-Price is higher than 1, in which the copolymerization ratio of acrylonitrile is 85 to 99.5 mol%, and the copolymerization ratio of the styrene derivative is 0.5 to 10 mol%. 【課題】炭素繊維製造工程において生産性およびプロセス性を損なうことなく炭化収率を向上する方法を提供する。【解決手段】Ａｌｆｒｅｙ−ＰｒｉｃｅのＱ値が１より高いスチレン誘導体を共重合させてなるアクリロニトリル系共重合体であって、アクリロニトリルの共重合比が８５〜９９．５ｍｏｌ％、前記スチレン誘導体の共重合比が０．５〜１０ｍｏｌ％であるアクリロニトリル系共重合体。【選択図】なし