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:
Nov. 10, 2015
Filed:
Apr. 09, 2013
Exxonmobil Chemical Patents Inc., Baytown, TX (US);
Keith H. Kuechler, Friendswood, TX (US);
Francisco M. Benitez, Cypress, TX (US);
Krystle J. Emanuele, Houston, TX (US);
Christopher L. Becker, Manhattan, KS (US);
John L. Heidman, Jr., Manassas, VA (US);
ExxonMobil Chemical Patents Inc., Baytown, TX (US);
Abstract
In a process for separating a mixture comprising cyclohexanone and phenol, at least a portion of the mixture is distilled in the presence of a solvent including at least two alcoholic hydroxyl groups attached to non-adjacent saturated carbon atoms, water, and in the presence or absence of a hemiketal defined by the formula (I) or the formula (II): wherein R, the same or different at each occurrence, is independently an alkylene group having from 2 to 10 carbon atoms, Ris an alkylene group having from 4 to 10 carbon atoms and/or Ris hydrogen or the following group: and in the presence or absence of an enol-ether derived from the hemiketal defined by the formula (I) or the formula (II), wherein the total concentration of the hemiketal and enol-ether, expressed in term of weight percentage of the total weight of the feed to the distilling step, is at most 0.01%.