The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 01, 2025
Filed:
Dec. 04, 2024
Tianjin University, Tianjin, CN;
Minhua Zhang, Tianjin, CN;
Yingzhe Yu, Tianjin, CN;
Hao Gong, Tianjin, CN;
He Dong, Tianjin, CN;
Sheng Wang, Tianjin, CN;
TIANJIN UNIVERSITY, Tianjin, CN;
Abstract
The present disclosure provides a process for reducing by-products in a bisphenol A reaction system. The process includes the following steps: conveying mother liquor produced after reaction, concentration, crystallization and separation of phenol and acetone to a mother liquor recovery system; subjecting the mother liquor obtained from the mother liquor recovery system and a sulfo-containing metal organic framework catalyst to contact for an isomerization reaction; and conveying a product obtained from the isomerization reaction to the mother liquor recovery system, to obtain bisphenol A after crystallization and dephenolization.