Organic compounds -- part of the class 532-570 series – Organic compounds – Heterocyclic carbon compounds containing a hetero ring...
Patent
1984-03-20
1985-08-27
Raymond, Richard L.
Organic compounds -- part of the class 532-570 series
Organic compounds
Heterocyclic carbon compounds containing a hetero ring...
C07D30789
Patent
active
045379785
ABSTRACT:
A process for the oxidation of pseudocumene to trimellitic acid anhydride which comprises catalytic oxidation of pseudocumene with air in the presence of acetic acid in an oxidation zone in the liquid phase and wherein the weight ratio of acetic acid to pseudocumene is in the range of about 1.0-2.5:1.0 and the catalyst comprises one or more heavy metal oxidation catalysts comprising zirconium, cobalt and manganese to provide about 0.2 to about 0.4 weight percent total metals based on pseudocumene and a source of bromine. The addition of the bromine component is controlled to provide a total of about 0.10 to about 0.30 weight percent total bromine based on pseudocumene. The total weight ratio of bromide ions to total metals ions is about 0.7 to about 2.0. The zirconium content is about 1 to about 5% and manganese content is about 14 to about 24% each by weight of the total metals. The reaction temperature is about 100.degree. C. to about 250.degree. C. The acetic acid and water of reaction are withdrawn during the last 5 to about 20% of the reaction.
REFERENCES:
patent: 3732257 (1973-05-01), Knobloch et al.
patent: 3853924 (1974-12-01), Meyer et al.
Ceisel Stephen G.
Egan, Jr. Joseph P.
Kilner Peter H.
Schammel Wayne P.
Blumberg Gunar J.
Magidson William H.
McClain William T.
Raymond Richard L.
Standard Oil Company (Indiana)
LandOfFree
Process for the production of trimellitic anhydride 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 production of trimellitic anhydride, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for the production of trimellitic anhydride will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2002618