Syndiotactic polymethyl -p- methylstyrene (s-PpMS) made of semi-crystalline product

摘要

Semicrystalline manufactured articles made of syndiotactic poly-p-methylstyrene (s-PpMS) in a crystalline form having a high melting point (225 °C), and processes for the preparation thereof. Processes for preparing semicrystalline manufactured articles (semi-finished products, formed articles, fibers, films, etc.) made of s-PpMS in its different crystalline forms by exposure of amorphous manufactured articles to suitable solvents and by subsequent thermomechanical treatments.