Iron-enhanced selectivity of heavy metal-bromine catalysis in th

Details Iron-enhanced selectivity of heavy metal-bromine catalysis in th Iron-enhanced selectivity of heavy metal-bromine catalysis in th

1987-04-23

1988-06-28

Moyer, Donald B.

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

Organic compounds

Carboxylic acids and salts thereof

562413, C07C 51265

Patent

active

047540621

ABSTRACT:
A process for the manufacture of polycarboxylic acids is disclosed. In this novel process, iron is used to improve the selectivity of cobalt-manganese-bromine or zirconium-cobalt-manganese-bromine oxidation system. Polycarboxylic acids such as pseudocumene are converted to trimellitic acid which is used to manufacture plasticizers and polyamide-imide polymers used as molding compounds for replacement of metals.

REFERENCES:
patent: 3920735 (1975-11-01), Wampfler et al.
patent: 4314073 (1982-02-01), Crooks

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