Process for preparing 2,6-naphthalenedicarboxylic acid

Details Process for preparing 2,6-naphthalenedicarboxylic acid Process for preparing 2,6-naphthalenedicarboxylic acid

1992-01-06

1992-12-29

Dees, Jose G.

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

Organic compounds

Carboxylic acids and salts thereof

562487, 562488, C07C 51265

Patent

active

051753529

ABSTRACT:
A process for preparing 2,6-naphthalenedicarboxylic acid comprising oxidation reaction of 2,6-diisopropylnaphthalene or an oxidation product thereof with molecular oxygen in a solvent containing an aliphatic carboxylic acid in the presence of a catalyst comprising cobalt and manganese as heavy metals and a bromine compound is disclosed, in which said oxidation reaction is carried out in the presence of at least one nitrogen-containing compound selected from the group consisting of a pyridine compound, ammonia, a carboxylic acid ammonium salt, urea, a urea derivative, an amine, and a carboxylic acid amide. 2,6-Naphthalenedicarboxylic acid can be obtained at higher purity and in increased yield.

REFERENCES:
patent: 4794195 (1988-12-01), Hayashi et al.
patent: 4873366 (1989-10-01), Matsuda et al.
patent: 4990659 (1991-02-01), Jihad et al.

Affiliated with

Also associated with

Rating

Process for preparing 2,6-naphthalenedicarboxylic acid does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process for preparing 2,6-naphthalenedicarboxylic acid, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for preparing 2,6-naphthalenedicarboxylic acid will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1888961