Title:
A METHOD OF PURIFYING A DICARBOXYLIC ACID COMPOUND
Document Type and Number:
WIPO Patent Application WO/2012/103325
Kind Code:
A3
Abstract:
A process for purifying a dicarboxylic acid that is derived from the mixed oxidation products from an ozonization of a mixture containing an ethylenically unsaturated compound having between 6 to 24 carbons, the process includes distilling the mixed oxidation products to provide a first distillate and a second distillate, partitioning the second distillate between an aqueous layer and an organic solvent layer to extract a C9 to C22 monocarboxylic acid impurity, separating the organic solvent layer from the aqueous layer, and isolating the dicarboxylic acid having a residual content of the C9 to C22 monocarboxylic acid impurity in an amount that is less than 0.5% by weight.
Inventors:
WALKER THOMAS CHAD (US)
Application Number:
PCT/US2012/022709
Publication Date:
September 27, 2012
Filing Date:
January 26, 2012
Export Citation:
Assignee:
EMERY OLEOCHEMICALS LLC (US)
International Classes:
C07C51/44; C07C51/34; C07C51/48; C07C53/126; C07C55/02; C07C55/10; C07C55/14; C07C55/18; C07C55/20; C07C55/21
Domestic Patent References:
| WO2000068346A1 | 2000-11-16 |
Foreign References:
| US3402108A | 1968-09-17 | |||
| CN101250101A | 2008-08-27 | |||
| US2813113A | 1957-11-12 | |||
| US2916502A | 1959-12-08 | |||
| EP1074540A1 | 2001-02-07 |
Attorney, Agent or Firm:
CAREY, James, P. et al. (Herron & Evans LLP,2700 Carew Tower,441 Vine Stree, Cincinnati OH, US)
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