| abstract |
(57) [Summary] (Modified) [Objective] To provide a polymer composition containing a liquid crystalline extended chain and a polymer composition having good spinnability and spinnability. [Structure] At least one polymer or random, A dope consisting of a solution of a sequential or block copolymer and polyphosphoric acid, wherein the polymer or copolymer has a concentration of at least 10 weight percent and the dope contains liquid crystal domains, provided that the polymer has the formula: Wherein the concentration of the polymer in the solution is at least 12 weight percent and the intrinsic viscosity of the polymer is at least 12 dL / g in methanesulfonic acid at 30 ° C. . |