Process for the production and recovery of water-soluble...

Details Process for the production and recovery of water-soluble... Process for the production and recovery of water-soluble...

C - Chemistry, Metallurgy

07

C

260/522.2

C07C 59/305 (2006.01) C07C 51/41 (2006.01)

Patent

CA 1151210

Case 4307 CHEMICAL PROCESS Abstract of the Disclosure It is disclosed that the production and recovery of water soluble carboxymethyloxy succinic acid salt from zinc or alkaline earth metal carboxymethyloxy succinic acid salt is enhanced by adding the zinc or alkaline earth metal salt to a carbonate which forms therewith a water soluble carboxy- methyloxy succinic acid salt. The treating process, performed in an aqueous system, produces a zinc or alkaline earth metal carbonate precipitate which is readily and quickly filtered providing a significant improvement in filterability over that experienced when the starting carbonate is added to the alkaline earth metal carboxymethyloxy succinate. Preferably the addition is progressive; that is, the zinc or alkaline earth metal carboxymethyloxy succinate is added to the carbonate gradually so that for the most part the carbonate is present in excess over the other reactant.

284448

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