Purification of diphenyl phthalates

Details Purification of diphenyl phthalates Purification of diphenyl phthalates

1988-05-24

1989-09-19

Lone, Werren B.

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

Organic compounds

Carboxylic acid esters

560 79, 560 99, C07C 6760

Patent

active

048683248

ABSTRACT:
Crude diphenyl phthalates, including isomeric mixtures thereof which are prepared by reacting mixtures of isophthalic and terephthalic acids with phenol, preferably in the presence of an organotitanate, organozirconate, or organostannate catalyst, are purified by dissolving the crude phthalate in an organic solvent, contacting the resulting solution with dilute aqueous alkali to neutralize the ester, separating the resulting oil and aqueous phases, and thereafter recovering from the oil phase a purified diaryl phthalate of reduced color and low acidity.

REFERENCES:
patent: 4304925 (1981-12-01), Watanabe et al.
patent: 4464477 (1984-08-01), Bunger et al.

Affiliated with

Also associated with

Rating

Purification of diphenyl phthalates does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Purification of diphenyl phthalates, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Purification of diphenyl phthalates will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-369633