Method of purifying crude 2,6-naphthalenedicarboxylic acid dimet

Details Method of purifying crude 2,6-naphthalenedicarboxylic acid dimet Method of purifying crude 2,6-naphthalenedicarboxylic acid dimet

1976-09-23

1977-09-13

Lutter, Frank W.

Distillation: processes, separatory

Vaporization zone under positive pressure or vacuum

203 7, 560 80, 560 78, B01D 310

Patent

active

040480216

ABSTRACT:
In a method of obtaining purified 2,6-naphthalenedicarboxylic acid dimethyl ester by vacuum distilling crude 2,6-naphthalenedicarboxylic acid dimethyl ester under conditions of application of heat, the improvement which comprises vacuum distilling a crude 2,6-naphthalenedicarboxylic acid dimethyl ester having an acid value (A.sub.f), as expressed in milligrams of KOH required for neutralizing the carboxyl groups contained in one gram of said crude 2,6-naphthalenedicarboxylic acid dimethyl ester, of from 1.0 to 50.

REFERENCES:
patent: 2938837 (1960-05-01), Meyer et al.
patent: 3382271 (1968-05-01), McNerney
patent: 3517053 (1970-06-01), Antonsen
patent: 3639451 (1972-02-01), Ebert
patent: 3818071 (1974-06-01), Chilton
Perry's Chemical Engineer's Handbook; McGraw-Hill; 4th Edition; pp. 2-87 to 2-90.

Affiliated with

Also associated with

Rating

Method of purifying crude 2,6-naphthalenedicarboxylic acid dimet does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-271971