Anhydride end-capping of polymers

摘要

The disclosure describes a neat, one-pot scheme for reacting a hydroxyl propagating end of a polymer with a cyclic acid anhydride to form a free acid terminus.

主权项

1. A process comprising:
polymerizing a first cyclic component and an optional second cyclic component to form a homopolymer or a copolymer resin using a ring opening polymerization (ROP) process; and, reacting a cyclic acid anhydride with a propagating terminal hydroxyl group of the homopolymer or copolymer with at least one catalyst and an optional initiator to form a free acid end group,wherein the polymerizing and reacting occur under neat Conditions, and standard pressure and humidity, in a single vessel.