C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
C07C 63/38 (2006.01) C07C 51/255 (2006.01) C07C 51/265 (2006.01) C07C 51/487 (2006.01) C07C 63/15 (2006.01)
Patent
CA 2115451
2115451 9400413 PCTABS00030 Disclosed is a method for preparing an aromatic carboxylic acid comprising oxidizing in the liquid phase an aromatic feed compound containing at least one alkyl or acyl group with a molecular oxygen-containing gas, in a solvent comprising a low molecular weight aliphatic carboxylic acid, and in the presence of a heavy metal oxidation catalyst, thereby forming an oxidation reaction product mixture comprising an aromatic carboxylic acid; subsequently heating the oxidation reaction product mixture at a temperature of at least about 500 ·F (260 ·C) to form a second product mixture; and recovering from the second product mixture the aromatic carboxylic acid. The method of this invention provides for purer, larger particle size aromatic carboxylic acid product.
Albertins Rusins
Behrens Paul K.
Holzhauer Juergen K.
Hoover Stephen V.
Kuhlmann George E.
Amoco Corporation
Gowling Lafleur Henderson Llp
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