Process for producing dimethyl 2,6-naphthalene-dicarboxylate

Details Process for producing dimethyl 2,6-naphthalene-dicarboxylate Process for producing dimethyl 2,6-naphthalene-dicarboxylate

1994-06-22

1995-07-25

Dees, Jose G.

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

Organic compounds

Carboxylic acid esters

C07C 6976

Patent

active

054363640

ABSTRACT:
A process for producing dimethyl 2,6-naphthalene-dicarboxylate by reacting 2,6-naphthalene-dicarboxylic acid with methanol which comprises effecting the reaction at 200.degree. to 350.degree. C. in the presence of trimethyl trimellitate as an essential solvent and optionally, at least one solvent selected from methyl benzoate, methyl toluate and dimethyl o-phthalate preferably by at least two-stage continuous reaction method. The above process is capable of enhancing the rate of esterification reaction and producing purified objective product in high yield for a long period of time in a stable operation without causing any operational trouble such as corrosion and clogging the production equipment.

REFERENCES:
patent: 5262560 (1993-11-01), Holzhauer et al.
Database WPI, Week 9347, Derwent Publications Ltd., London, GB; AN 93-374653 of JP-A-5 279 462 (Teijin Ltd), Oct. 1993.

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