New Invention Profile
| Publication No: | EP4680592 [Europe] | Application No: | EP24770170 |
| Title: | A continuous process for purification of bisphenol-A | ||
| Publication Date: | 21-01-2026 | File Date: | 15-03-2024 |
| Inventor(s): | Kamble Sanjay Pandurang; Bhongale Sunil Sitaram; Dhotre Kapil Dnyaneshwar; Bodawar Narendra Balwant | ||
| IPC Classification: | C07C37/84, B01J31/08, C07C37/68, C07C39/16 | ||
| Abstract: | The present invention relates to purification of bisphenol and/or its analogues and isomers. Specifically, the present invention relates to a continuous process for the purification of bisphenol-A (BPA) utilizing flash distillation and agitated thin film evaporator (ATFE) /agitated thin film dryer (ATFD) wherein unreacted phenol and traces of acetone are recovered and reused. Further impurities present in the crude BPA were selectively removed by combination of organic and aqueous solvent to obtain the highly pure and colorless BPA. Another advantage present invention is the use of minimum quantity water (crude BPA to water ratio wt 1: 1) in the downstream processing of crude BPA and the wastewater generated was further treated using cavitation/adsorption/ advanced oxidation processes (AOPs) and hybrid AOPs techniques. The purified water further can be used in the process or as plant utilities like cooling water, boiler water, plant cleaning water etc. | ||
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