EP 2702031 A2 20140305 - A METHOD OF PURIFYING A DICARBOXYLIC ACID COMPOUND
Title (en)
A METHOD OF PURIFYING A DICARBOXYLIC ACID COMPOUND
Title (de)
VERFAHREN ZUR REINIGUNG EINER DICARBONSÄUREVERBINDUNG
Title (fr)
PROCÉDÉ DE PURIFICATION DE COMPOSÉ D'ACIDE DICARBOXYLIQUE
Publication
Application
Priority
- US 201161437581 P 20110128
- US 2012022709 W 20120126
Abstract (en)
[origin: WO2012103325A2] 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.
IPC 8 full level
C07C 51/34 (2006.01)
CPC (source: EP)
C07C 51/34 (2013.01); C07C 51/44 (2013.01); C07C 51/48 (2013.01)
C-Set (source: EP)
Citation (search report)
See references of WO 2012103325A2
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
WO 2012103325 A2 20120802; WO 2012103325 A3 20120927; CA 2841595 A1 20120802; DE 12704955 T1 20141030; EP 2702031 A2 20140305; ES 2525665 T1 20141229; MY 181346 A 20201221; SG 194669 A1 20131230; TW 201245137 A 20121116; TW I552989 B 20161011
DOCDB simple family (application)
US 2012022709 W 20120126; CA 2841595 A 20120126; DE 12704955 T 20120126; EP 12704955 A 20120126; ES 12704955 T 20120126; MY PI2013702056 A 20120126; SG 2013079934 A 20120126; TW 101102957 A 20120130