Process for preparing polymeric acetal carboxylate compositions
AssigneeMonsanto Company
InventorDavid R. Dyroff
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Abstract
Solid state compositions having improved storage stability are provided by reacting an aqueous solution or slurry of polymeric acetal carboxylate and alkali metal hydroxide with carbon dioxide to form alkali metal carbonate in intimate admixture with the polymer and recovering the admixture in solid form. The compositions are useful as builders in detergent formulations.
Claims20
A process which comprises reacting an aqueous solution or slurry of a polymeric acetal carboxylate and alkali metal hydroxide with carbon dioxide to form alkali metal carbonate in intimate admixture with the polymeric acetal carboxylate and recovering the admixture in solid form.
A process for producing a polymeric acetal carboxylate composition having improved storage stability which comprises saponifying a polymeric acetal carboxylate ester with excess aqueous alkali metal hydroxide to form the alkali metal salt of the polymeric acetal carboxylate, reacting the resultant reaction mixture with carbon dioxide to form alkali carbonate in intimate admixture with the alkali salt of the polymeric acetal carboxylate and recovering the admixture in solid form.
Dependencies are inferred from the claim text.