PROCESS TO PREPARE DI- AND MULTIBLOCK COPOLYMERS.

摘要

The present invention discloses a process for preparing di-, tri, or multi-block polyester/polycarbonate (co)polymers by ring-opening polymerisation in the presence of a non-toxic catalyst system in combination with either a linear monohydroxy HO-PC-OR, or a linear telechelic dihydroxy HO-PC-OH, or a star polyhydroxy R-(PC-OH)n end-capped polyester/polycarbonate.