Method for the preparation of amorphous syndiotactic styrene- based polymer and a method for shaping the same

摘要

An amorphous and excellently moldable styrene-based polymer having a syndiotactic structure can be obtained when a styrene-based polymer having a substantially syndiotactic structure is dissolved in a solvent followed by separation and recovery of the polymer from the solution or melt thereof is quenched. Shaping the same gives various kinds of shaped articles having excellent mechanical strengths and heat resistance. Physical properties of the shaped articles can be further improved by a modification treatment.