Process for producing polymeric plasticizers from polyethylene terephthalate

摘要

A process is disclosed for preparing polymeric plasticizers from polyethylene terephthalate which comprises reacting a trimellitic acid polyester ether with polyethylene terephthalate to prepare a nonlinear copolymer with hydroxyl functionality which is then reacted with a fatty acid of from 12 to 18 carbon atoms. The resulting composition has excellent properties as a polymeric plasticizer for polyvinylchloride resin.