Process for the separation of methylparaben from wintergreen oil

Details Process for the separation of methylparaben from wintergreen oil Process for the separation of methylparaben from wintergreen oil

1981-03-23

1983-10-04

Killos, Paul J.

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

Organic compounds

Carboxylic acid esters

560 68, 560 69, 560 71, 210663, 210669, 210675, 210676, 210690, C07C 6988

Patent

active

044080654

ABSTRACT:
An adsorptive separation process for separating methylparaben from a feed mixture comprising methylparaben and wintergreen oil, which process comprises contacting the feed mixture with an adsorbent comprising a type X or type Y zeolite, selectively adsorbing substantially all of the methylparaben to the substantial exclusion of the wintergreen oil and thereafter recovering high-purity methylparaben. A desorption step may be used to desorb the adsorbed methylparaben. The process is carried out preferably in the liquid phase.

REFERENCES:
patent: 2985589 (1961-05-01), Broughton et al.
patent: 3114782 (1963-12-01), Fleck et al.
patent: 3201491 (1965-08-01), Stine et al.
patent: 3265750 (1966-08-01), Peck et al.
patent: 3510423 (1970-05-01), Neuzil et al.
patent: 3558732 (1971-01-01), Neuzil
patent: 3668267 (1972-06-01), Hedge
patent: 3686342 (1972-08-01), Neuzil
patent: 3917734 (1975-11-01), deRosset
patent: 4313015 (1982-01-01), Broughton

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