Invention Grant
- Patent Title: Purification of monomer from recycle polyesters
- Patent Title (中): 从再循环聚酯中纯化单体
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Application No.: US14335197Application Date: 2014-07-18
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Publication No.: US09127136B1Publication Date: 2015-09-08
- Inventor: Philip Wesley Bell , Osit Karroonnirun , Shankar Kollengodu Subramanian
- Applicant: SABIC Global Technologies B.V
- Applicant Address: NL
- Assignee: SABIC GLOBAL TECHNOLOGIES B.V.
- Current Assignee: SABIC GLOBAL TECHNOLOGIES B.V.
- Current Assignee Address: NL
- Agency: Cantor Colburn LLP
- Main IPC: C08G63/02
- IPC: C08G63/02 ; C08J11/24 ; C08G63/00
Abstract:
A method of recycling bis(hydroxyalkyl) terephthalate monomer from a composition comprising a terephthalate-containing polymer includes depolymerizing the terephthalate-containing polymer to provide the bis(hydroxyalkyl) terephthalate; and separating the bis(hydroxyalkyl) terephthalate from the composition comprising the depolymerized terephthalate-containing polymer by continuous multi-column liquid chromatography.
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