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:
Sep. 06, 2011
Filed:
Jul. 19, 2006
Vladimir Mikhailovitch Zakoshansky, Long Grove, IL (US);
Irina Ivanovna Vassilieva, St. Petersburg, RU;
Yuri Nikolaevich Koshelev, St. Petersburg, RU;
Yuri Ivanovitch Malov, St. Petersburg, RU;
Vladimir Mikhailovitch Zakoshansky, Long Grove, IL (US);
Irina Ivanovna Vassilieva, St. Petersburg, RU;
Yuri Nikolaevich Koshelev, St. Petersburg, RU;
Yuri Ivanovitch Malov, St. Petersburg, RU;
Illa International, LLC, Reno, NE (US);
Abstract
A two-step method of crude phenol treatment from impurities, wherein a first step comprises oxidizing hydroxyacetone and aldehydes impurities, in phenol medium by air oxygen with the use of a heterogeneous catalyst which contains transition metals, and a second step comprises treating the unoxidized impurities with the use of a heterogeneous acidic catalyst. The separation of treatment by-products compounds produced during said phenol treatment may then be carried out by a conventional fractionation, distillation, or equivalent method, to produce highly purified product phenol.