POLYACRYLONITRILE TYPE POLYMER, METHOD OF PRODUCING THE SAME, POLYACRYLONITRILE TYPE FIBER BUNDLE AND METHOD OF PRODUCING CARBON FIBER BUNDLE

摘要

PROBLEM TO BE SOLVED: To provide a PAN type polymer which has branches in the molecule and shows high thermal stability when dissolved in a solvent to form a solution and its production method.;SOLUTION: A method of producing polyacrylonitrile type polymer includes a step (1) of carrying out a polymerization reaction in a polar solvent containing a macro initiator and acrylonitrile and a step (2) of adding a styrene derivative to the reaction system.;COPYRIGHT: (C)2014,JPO&INPIT