Separation of acids and esters in the processing of waste salt s

Details Separation of acids and esters in the processing of waste salt s Separation of acids and esters in the processing of waste salt s

1975-10-07

1977-10-04

Killos, Paul J.

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

Organic compounds

Carboxylic acid esters

260533R, 260535R, 260537R, 260538, 560204, C07C 6966

Patent

active

040524418

ABSTRACT:
After acidification and separation of a concentrated aqueous solution of sodium sulfate, the water-containing organic phase that remains is first distilled to remove mainly water, then chilled to crystallize out the bulk of the dicarboxy acids, then esterified and distilled again to obtain monocarboxy acid esters in distillate fractions, after which the residue is further esterified to facilitate obtaining the remaining dicarboxy acids in usable form.

REFERENCES:
patent: 2824123 (1958-02-01), Kuceski
patent: 2904584 (1959-09-01), Payne et al.
patent: 3428656 (1969-02-01), Weiss
patent: 3590080 (1971-06-01), Beesley et al.

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