Organic compounds -- part of the class 532-570 series – Organic compounds – Oxygen containing
Reexamination Certificate
2006-09-20
2008-08-12
Witherspoon, Sikarl A (Department: 1621)
Organic compounds -- part of the class 532-570 series
Organic compounds
Oxygen containing
C568S437000
Reexamination Certificate
active
07411099
ABSTRACT:
The present invention provides a liquid phase oxidation of toluene by using catalyst containing manganese (Manganese II acetate) in presence of Lewis acid (Stannous (II) chloride) and a bromide promoter (NaBr), at a temperature of 120° C. and at a pressure of air in the range of 70-400 psig, in presence of carboxylic acid (acetic acid), as a solvent, to obtain high selectivity to benzaldehyde (76%). High activity was obtained with minimum byproducts such as benzoic acid, benzyl alcohol and benzyl acetate.
REFERENCES:
patent: 3485876 (1969-12-01), van de Mond
patent: 3946067 (1976-03-01), Kwiatek et al.
patent: 4390728 (1983-06-01), Daniel
patent: 6495726 (2002-12-01), Kantam et al.
patent: 6743952 (2004-06-01), Kantham et al.
patent: 7189882 (2007-03-01), Chaudhari et al.
Borgaonkar et al. Liquid Phase Oxidation of Toluene to Benzaldehyde by Air. Ind. Eng. Chem. Prod. Res. Dev. 1984, 23, pp. 455-458.
Chaudhari Raghunath Vitthal
Rajurkar Kalpendra Baburao
Rane Vilas Hari
Tonde Sunil Sopana
Council of Scientific & Industrial Research
Schweitzer Corman Gross & Bondell LLP
Witherspoon Sikarl A
LandOfFree
Process for the liquid phase oxidation of toluene to... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Process for the liquid phase oxidation of toluene to..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for the liquid phase oxidation of toluene to... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4017797