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:
May. 01, 2001
Filed:
Sep. 15, 1999
Vladimir Michailovitch Zakoshansky, St. Petersburg, RU;
Irina Ivanova Vasilieva, St. Petersburg, RU;
Andrei Konstantinovitch Griaznov, St. Petersburg, RU;
Youry Nikolaevitch Youriev, North Miami Beach, FL (US);
Heinrich Van Barnefeld, Bottrop, DE;
Otto Gerlich, Gladbeck, DE;
Michael Kleine-Boymann, Bottrop, DE;
Werner Kleinloh, Haltern, DE;
Christian Michalik, Essen, DE;
Other;
Abstract
The present invention relates to an improved method for producing phenol and acetone by oxidizing cumene into technical cumol hydroperoxide (CHP) through catalytic cleavage of the CHP. According to the invention, the oxidation products are concentrated to up to a cumene content ranging from 21 to 30 wt % in the technical cumol hydroperoxide, said mixture being used for the catalytic cleavage.