Starch hydrolyzate solubilizer for metal ions
First Claim
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1. A solubilizing agent for sparingly soluble metal ions or compounds which is a starch hydrolyzate that has a content of 5 to 90 wt % DP2 compounds and has been selectively oxidized at C1 in combination with a further ingredient which is at least one member of the group consisting of surface-active substance, alkali, silicate, aluminosilicate, phosphate, and mixtures thereof.
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Abstract
The invention relates to solubilizers for metal ions and poorly soluble metal compounds, containing an oxidation product of starch hydrolysate as a solubilizing agent, to a method for solubilizing metal ions and to the use of said solubilizer.
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27 Claims
- 1. A solubilizing agent for sparingly soluble metal ions or compounds which is a starch hydrolyzate that has a content of 5 to 90 wt % DP2 compounds and has been selectively oxidized at C1 in combination with a further ingredient which is at least one member of the group consisting of surface-active substance, alkali, silicate, aluminosilicate, phosphate, and mixtures thereof.
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15. A method for preparation of a solubilizing agent for sparingly soluble metal compounds comprising
providing a starch hydrolyzate composition with a content of 5 to 90 wt % DP2 compounds, and catalytic oxidizing the C1-position carbon atom of at least one carbohydrate in the starch hydrolyzate composition without effecting any substantially oxidization of other carbon atoms in the carbohydrates in the starch hydrolyzate composition, and combining the resulting composition with at least one member of the group consisting of surface-active substance, alkali, silicate, aluminosilicate, phosphate, and mixtures thereof.
- 16. A method of solublization of a material containing a metal ion or metal compound which comprising bringing a solubilizing agent which is a starch hydrolyzate that has a content of 5 to 90 wt % DP2 compounds and has been selectively oxidized at C1 into contact with said material in less than equimolar amounts with respect to the metal ions.
Specification