Trimellitic acid process

Details Trimellitic acid process Trimellitic acid process

1988-09-26

1989-07-04

Lone, Werren B.

Organic compounds -- part of the class 532-570 series

Organic compounds

Carboxylic acids and salts thereof

502227, 562417, C07C 51215

Patent

active

048452750

ABSTRACT:
An improved process for the manufacture of trimellitic acid from pseudocumene feedstock is disclosed. In this process, lead (IV) is used as a catalyst component in addition to the cobalt, manganese, and zirconium catalyst. The use of lead (IV) reduces higher boiling impurities and improves the yield. In our novel process, pseudocumene is converted to trimellitic acid which is used to manufacture plasticizers and polyamide-imide polymers used as molding compounds for replacement of metals.

REFERENCES:
patent: 4230882 (1980-10-01), Seko et al.
patent: 4314073 (1982-02-01), Crooks
patent: 4322549 (1982-03-01), Kuhlmann et al.

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