Polyester/polycarbonate block copolymers via one-pot, neat ring opening polymerization

摘要

The instant disclosure describes polyester synthesis processes, including processes for the ring-opening polymerization (ROP) of cyclic organic monomer components and components comprising a functional group using an organocatalyst system to effect ROP-based block copolymer preparation.

主权项

1. A ring-opening polymerization (ROP) comprising:
a. contacting a first cyclic component, at least one catalyst and at least one initiator; b. polymerizing the first cyclic component to form a homopolymer; c. contacting the homopolymer and a cyclic carbonate; d. polymerizing the cyclic carbonate to the homopolymer to form a first block copolymer; e. contacting the first block copolymer and a second cyclic component; and f. polymerizing the second cyclic component to the first block copolymer to form a second block copolymer; wherein the contacting and polymerizing are carried out under neat conditions, without an inert gas blanket, in a single vessel.