Process for purifying polycarboxylic acids

Details Process for purifying polycarboxylic acids Process for purifying polycarboxylic acids

C - Chemistry, Metallurgy

07

C

C07C 51/42 (2006.01) C07C 51/43 (2006.01) C07C 51/47 (2006.01) C07C 51/48 (2006.01)

Patent

CA 2381023

Polycarboxylic acids are purified by contacting a crude polycarboxylic acid with a solvent to produce a substantially pure polycarboxylic acid. The solvent is chosen so that the impurities are soluble in the solvent and the polycarboxylic acid is insoluble in the solvent.

L'invention concerne un procédé permettant de purifier des acides carboxyliques par mise en contact d'un acide carboxylique brut avec un solvant, afin de produire un acide carboxylique pur. Le solvant est choisi de sorte que les impuretés soient solubles dans ledit solvant, et que ledit acide carboxylique soit insoluble dans ce solvant.

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