Chemical process

Details Chemical process Chemical process

1976-08-30

1977-11-15

Killos, Paul J.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C07C 5922

Patent

active

040585603

ABSTRACT:
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 carboxymethyloxy succinic acid salt. The treating process, performed in an aqueous system, produces a zinc or alkaline earth metal carbonate precipitiate 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.

REFERENCES:
patent: 3821296 (1974-06-01), Blumbergs et al.

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