公开(公告)号：US11655350B2

公开(公告)日：2023-05-23

申请号：US17232840

申请日：2021-04-16

Applicant: UOP LLC

Inventor： Erin Broderick ,  Rodrigo Lobo ,  Francis Lupton ,  Shurong Yang ,  Raymond Shih ,  Andrea Bozzano ,  Hayim Abrevaya

IPC: B29B9/04 ,  C08J11/08

CPC classification number: C08J11/08 ,  C08J2367/02 ,  C08J2423/02

Abstract: A process is provided of treating a feed comprising polyethylene terephthalate comprising dissolving said feed in a polar solvent at a temperature between about 100 to 250° C. to produce a dissolved feed; then adding an anti-solvent that is less polar than said polar solvent followed by cooling a resulting mixture resulting in precipitation of purified polyethylene terephthalate and then separation of solid purified polyethylene terephthalate from remaining liquids.

公开(公告)号：US20220332914A1

公开(公告)日：2022-10-20

申请号：US17232840

申请日：2021-04-16

Applicant: UOP LLC

Inventor： Erin Broderick ,  Rodrigo Lobo ,  Francis Lupton ,  Shurong Yang ,  Raymond Shih ,  Andrea Bozzano ,  Hayim Abrevaya

IPC: C08J11/08

Abstract: A process is provided of treating a feed comprising polyethylene terephthalate comprising dissolving said feed in a polar solvent at a temperature between about 100 to 250° C. to produce a dissolved feed; then adding an anti-solvent that is less polar than said polar solvent followed by cooling a resulting mixture resulting in precipitation of purified polyethylene terephthalate and then separation of solid purified polyethylene terephthalate from remaining liquids.