Process for the production of aromatic anhydrides and aromatic e

Details Process for the production of aromatic anhydrides and aromatic e Process for the production of aromatic anhydrides and aromatic e

1990-10-31

1992-03-31

Dees, Jose G.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

549250, 560 77, 560 78, 585830, C07D30777, C07C 6700, C07C 6748

Patent

active

051010500

ABSTRACT:
A process for the production of aromatic esters or aromatic anhydrides with improved color properties is disclosed. This process comprises treating the aromatic ester or aromatic anhydride with an activated boric acid followed by fractionation.

REFERENCES:
patent: 4886901 (1989-12-01), Holzhauer et al.

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