Kinetics of reactions between air and liquid 1,2,4-trimethylbenzene with acetic acid as solvent and Co-Mn-Br system as catalyst to produce trimellitic acid was investigated.

In order to sufficiently understand the reaction mechanism and so as to improve the trimellitic acid producing process.

Production technology of high-quality trimellitic anhydride;

Analysis on process and safety technology for trimellitic anhydride;

Analyses and forecasts of the trimellitic anhydride market at home and abroad;