Manganese bleach activators
AssigneeLever Brothers Company
InventorJames S. Namnath
Life of this patent
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Abstract
A catalyst for the controlled decomposition of peroxy compounds is provided which comprises a water-soluble manganese (II) salt adsorbed onto a solid inorganic silicon support material, the combination having been prepared at a pH from 7.0 to 11.1.
Claims27
A catalyst for the controlled decomposition of peroxy compounds comprising a water-soluble manganese (II) salt adsorbed onto a solid inorganic silicon support material, wherein the ratio of manganese (II) to inorganic silicon support material ranges from 1:1000 to 1:10, the combination having been prepared at a pH from 7.0 to 11.1 and where the amount of manganese (II) does not exceed the adsorptive capacity of the inorganic silicon or alumina support material.
A process for preparation of a catalyst for the controlled decomposition of peroxy compounds comprising:
- (a) combining a water-soluble manganese (II) salt dissolved in a solvent and slurry of a solid silicon or alumina support material in a solvent, the ratio of manganese (II) to solid silicon or alumina support material ranging from 1:1000 to 1:10;
- (b) adjusting pH to achieve a value from 7.0 to 11.1;
- (c) separating the solid composition;
- (d) washing the solid composition with solvent to remove any traces of free manganese (II) salts;
- and
- (e) drying the solid composition to remove solvent and moisture.
A process for prepartion of a catalyst for the controlled decomposition of peroxy compounds comprising:
- (a) combining a water-soluble manganese (II) salt dissolved in a solvent and slurry of a solid silicon or alumina support material in a solvent, the manganese (II) being present in an amount that does not exceed the adsorptive capacity of the solid support material;
- (b) adjusting pH to achieve a value from 7.0 to 11.1;
- and
- (c) spray-drying the resultant slurry.
Dependencies are inferred from the claim text.