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:
Aug. 23, 2011
Filed:
Apr. 15, 2009
Mark E. Nelson, Mount Vernon, IN (US);
Arkady Samuilovich Dykman, St. Petersburg, RU;
Andrey Vladimirovich Zinenkov, St. Petersburg, RU;
Victor Vladimirovich Pinson, St. Petersburg, RU;
Ilja Nikolayevich Grebenshchikov, St. Petersburg, RU;
Mark E. Nelson, Mount Vernon, IN (US);
Arkady Samuilovich Dykman, St. Petersburg, RU;
Andrey Vladimirovich Zinenkov, St. Petersburg, RU;
Victor Vladimirovich Pinson, St. Petersburg, RU;
Ilja Nikolayevich Grebenshchikov, St. Petersburg, RU;
Abstract
A method for producing phenol and acetone in a multi-stage process at an elevated temperature from a cumene hydroperoxide mixture comprising cumene, comprises the steps of: wherein an amount of phenol approximately equal to the amount of distilled from the cumene hydroperoxide mixture is added to the cumene hydroperoxide mixture before the reacting step b). The amount of hydroxyacetone is reduced, thereby, improving the quality of commercial-grade phenol and the products made from the phenol.