Title:
The hydroxylation method of phenol and phenol ether
Document Type and Number:
Japanese Patent JP5945588
Kind Code:
B2
Abstract:
A method for hydroxylating phenols and phenol ethers using hydrogen peroxide and specifically, a method for hydroxylating phenol using hydrogen peroxide. The method for hydroxylating a phenolic substrate selected from a phenol or a phenol ether by reacting such phenolic substrate with hydrogen peroxide in the presence of an acid catalyst comprises the following steps, implemented consecutively or simultaneously: a first step consisting of mixing a phenolic substrate with a hydrogen peroxide solution under conditions in which the temperature is sufficient for the initial phenolic substrate to remain liquid and for minimizing the conversion rate of the hydrogen peroxide; a second step consisting of carrying out the phenolic substrate hydroxylation reaction under adiabatic conditions, the acid catalyst being added at the mixing stage and/or at the beginning of the hydroxylation reaction; and a third step, if necessary, consisting of recovering the hydroxylated product.
Inventors:
Laurent Garrel
Stephanie norman
Pascal patio
Jean-Christophe Bigelow
Stephanie norman
Pascal patio
Jean-Christophe Bigelow
Application Number:
JP2014505677A
Publication Date:
July 05, 2016
Filing Date:
May 15, 2012
Export Citation:
Assignee:
RHODIA OPERATIONS
International Classes:
C07C39/08; C07C37/60
Domestic Patent References:
| JP50062940A | ||||
| JP50130727A | ||||
| JP2010536816A | ||||
| JP2002522402A |
Foreign References:
| US20060217576 |
Other References:
YUBE KUNIO,CONTROL OF SELECTIVITY IN PHENOL HYDROXYLATION USING MICROSTRUCTURED CATALYTIC WALL REACTORS,APPLIED CATALYSIS A: GENERAL,NL,ELSEVIER SCIENCE,2007年 7月26日,V327 N2,P278-286
Attorney, Agent or Firm:
Axis International Patent Business Corporation
Previous Patent: The extended effective power headroom report for half-permanence scheduling
Next Patent: GRAPH MAKING DEVICE
Next Patent: GRAPH MAKING DEVICE