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. 23, 1999
Filed:
Mar. 19, 1997
Jan Zawadiak, Gliwice, PL;
Zbigniew Stec, Gliwice, PL;
Ulrich Knips, Kamen, DE;
Robert Zellerhoff, Hamminkeln, DE;
Danuta Gilner, Gliwice, PL;
Beata Orlinska, Katowice, PL;
Jerzy Polaczek, Warszawa, PL;
Rutgers Kureha Solvents GmbH, Duisburg, DE;
Abstract
In a process for the catalytic oxidation of isoalkylaromatic hydrocarbons into ketones, alcohols and peroxides the isoalkyl- aromatic hydrocarbons in fluid phase at a temperature of 60 to 120.degree. C. are oxidized by oxygen in the presence of a catalyst of metal salt of different valency and alkylammonium salt or alkylphosphonium salt. Further there is claimed a catalyst for the oxidation of isoalkylaromatic hydrocarbons, containing a metal salt selected from copper salts, cobalt salts and manganese salts or their mixtures and an alkylammonium salt or alkylphosphonium salt in a ratio of metal salt to alkylammonium salt or alkylphosphonium salt of 0.5 to 50:1.