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:
Mar. 28, 2000
Filed:
Feb. 12, 1999
Joao Amadio, Lyons, FR;
Brice Le Corre, Lyons, FR;
Jean-Jacques Charrin, Lyons, FR;
Xavier Houzard, Bron, FR;
Philippe Laurent, Roussillon, FR;
Roland Noyerie, Salaise-sur-Sanne, FR;
Yves-Michel Quenton, Saintes-Colombes, FR;
Rhodia Chimie, Courbevoie, FR;
Abstract
The present invention lies in the field of the manufacture of phenol from cumene. The subject of the invention is a process for the continuous preparation of cumene hydroperoxide by oxidation, in the liquid phase, of cumene in the presence of oxygen. The process according to the invention is carried out in the presence of at least one agent chosen from the hydroxide or the carbonate of an alkali metal and/or alkaline-earth metal; the said agent being used in an amount of between 2 and 10 ppb (expressed as sodium hydroxide) with respect to the amount of cumene introduced. The invention likewise relates to the use of the hydroperoxide thus obtained for preparing phenol.