Title:
ビスフェノールの製造からの残渣流の処理
Document Type and Number:
Japanese Patent JP7155419
Kind Code:
B2
Abstract:
A method is disclosed for treating a residual stream from bisphenol manufacture, wherein the residual stream comprises unreacted phenols, bisphenol isomers, trisphenols, organic sulfides and water. The method comprises contacting at least a portion of the residual stream or a reaction product thereof with an acidic catalyst under conditions sufficient to allow acid-catalyzed hydrolysis of organic sulfides in the residual stream to the corresponding thiols and produce an effluent stream, and then distilling at least a portion of the effluent stream to recover distillate products comprising phenols and thiols and produce a bottoms product comprising bisphenol isomers and trisphenols, and having a lower content of organic sulfides than the residual stream.
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Inventors:
Palmer, David
Application Number:
JP2021521933A
Publication Date:
October 18, 2022
Filing Date:
July 06, 2018
Export Citation:
Assignee:
Badger Licensing LRC
International Classes:
C07C37/86; B01J31/10; C07B61/00; C07C37/20; C07C39/16
Domestic Patent References:
| JP2009535401A | ||||
| JP2012201619A | ||||
| JP10059888A | ||||
| JP5201905A | ||||
| JP6321834A | ||||
| JP2009242316A |
Foreign References:
| US20130108820 | ||||
| US20130221837 | ||||
| US20100105960 |
Attorney, Agent or Firm:
Yamazaki Yuzo
Toshiaki Akamatsu
Tadao Naito
Chihiro Imai
Park Shinon
Toshiaki Akamatsu
Tadao Naito
Chihiro Imai
Park Shinon