Invention Application
- Patent Title: PROCESSES FOR RECOVERING DIALKYL TEREPHTHALATES FROM POLYESTER COMPOSITIONS
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Application No.: US18703820Application Date: 2022-10-25
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Publication No.: US20240409488A1Publication Date: 2024-12-12
- Inventor: Pinguan Zheng , Hannah Grace Harris , Scott Donald Barnicki
- Applicant: Eastman Chemical Company
- Applicant Address: US TN Kingsport
- Assignee: Eastman Chemical Company
- Current Assignee: Eastman Chemical Company
- Current Assignee Address: US TN Kingsport
- International Application: PCT/US2022/047639 WO 20221025
- Main IPC: C07C67/02
- IPC: C07C67/02

Abstract:
Processes for recovering dialkyl terephthalates. The processes can include exposing a polyester composition to one or more glycols to depolymerization conditions thereby providing one or more depolymerization products. The one or more depolymerization products can be exposed to an alcoholysis process to recover dialkyl terephthalate. Optionally, the one or more glycols can be recycled and re-used in a subsequent dialkyl terephthalate recovery or other process.
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