公开(公告)号：US06472557B1

公开(公告)日：2002-10-29

申请号：US09438859

申请日：1999-11-12

Applicant: Thomas Michael Pell, Jr. ,  Michael Paul Ekart ,  David Dunlap Cornell ,  Damon Brian Shackelford ,  Donald Lee Carver

Inventor： Thomas Michael Pell, Jr. ,  Michael Paul Ekart ,  David Dunlap Cornell ,  Damon Brian Shackelford ,  Donald Lee Carver

IPC: C07C5100

CPC classification number: C07C51/09 ,  C07C67/03 ,  C08J11/24 ,  C08J2367/02 ,  Y02W30/706 ,  C07C63/26 ,  C07C69/82

Abstract: A process for producing high quality TPA suitable for PET feedstock material from recycled polyester. The process includes the steps of depolymerizing the polyester to form DMT; separating the DMT from secondary materials; and hydrolyzing the DMT to form TPA. In a preferred embodiment of the invention the recycled polyester is contacted with a component monomer or oligomer thereof to liquefy the polyester prior to depolymerizing the polyester.

Abstract translation: 一种生产优质TPA的方法，适用于回收聚酯的PET原料。 该方法包括将聚酯解聚形成DMT的步骤; 将DMT与次级材料分离; 并水解DMT以形成TPA。 在本发明的一个优选实施方案中，将再生聚酯与组分单体或其低聚物接触以在聚酯解聚之前使聚酯液化。