ENZYME-CATALYZED POLYESTERS AND POLYOL POLYMERS, CAPABLE OF PRODUCING ENVIRONMENTALLY-FRIENDLY COATING COMPOSITIONS

摘要

PURPOSE: Enzyme-catalyzed polyesters and polyol polymers are provided to be capable of producing environmentally-friendly coating compositions free from strong acid or heavy metal residues used as a catalyst. CONSTITUTION: The polyol polymer composition comprises (a) a polyol polymer comprising a plurality of moieties derived from a compound selected from the group consisting of a lactone, a lactide, a glycolide, and combinations thereof and (b) an enzyme catalyst, wherein at least one of the plurality of moieties is covalently linked via an ester linkage to the hydroxy moiety of a hydroxy moiety-containing polymerization initiator. In the composition, the polyol polymer may further comprise at least one ester moiety derived from a hydroxy moiety on the polyol polymer and (meth)acrylic acid. Preferably, the enzyme catalyst comprises a lipase enzyme.