Process for preparing diesters of naphthalenedicarboxylic acids

Details Process for preparing diesters of naphthalenedicarboxylic acids Process for preparing diesters of naphthalenedicarboxylic acids

1992-11-24

1994-09-27

Dees, Jose G.

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

Organic compounds

Carboxylic acid esters

560 77, 560 98, C07C 6708

Patent

active

053508742

ABSTRACT:
A continuous process for preparing a dialkylester of a naphthalenedicarboxylic acid comprising passing a liquid phase reaction mixture comprising a low molecular weight alcohol, a naphthalenedicarboxylic acid and a dialkylester of a naphthalenedicarboxylic acid at an elevated temperature through series arranged reaction zones while introducing a naphthalenedicarboxylic acid and a low molecular weight alcohol to an upstream reaction zone, agitating at least one reaction zone, and removing a liquid product mixture comprising the dialkylester of the naphthalenedicarboxylic acid produced by the reaction of the naphthalenedicarboxylic acid with the low molecular weight alcohol from a downstream reaction zone.

REFERENCES:
patent: 4003948 (1977-01-01), Yamashita et al.

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