Preparation of detergent compositions
AssigneeLever Bros. Co.
InventorRobin Snell Heslam
Life of this patent
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Abstract
Process for preparing a detergent powder composition comprising forming an alkaline aqueous slurry of at least a surface-active agent, a builder salt and an organic activator for peroxy-compounds, and subjecting said aqueous slurry to a spray-drying operation to form a particulate detergent composition having the organic activator homogeneously distributed therein. The particulate detergent composition may be admixed with an inorganic persalt e.g. sodium perborate, and also with an enzyme, e.g. a proteolytic enzyme.
Claims7
A process for preparing a detergent powder composition comprising the steps of forming an alkaline aqueous slurry having a pH value (measured on a 1% solids solution) of about 8.5 to 12 and comprising a surface-active agent selected from the group consisting of anionic, nonionic, zwitterionic, amphoteric and cationic detergents and mixtures thereof in an amount of about 1-20% by weight;
- a builder salt selected from the group consisting of inorganic and organic complex-forming substances and mixtures thereof in an amount of about 5-40% by weight, an organic activator for peroxy compounds having a hydrolysis rate of not more than 15%, in an amount of about 0.2-10% by weight;
- and water in an amount of about 40-60% by weight, heating said aqueous slurry to a temperature of about 60.degree.-90.degree. C, and subjecting it to a spray-drying operation to form a particulate detergent composition having the organic activator homogeneously distributed therein.
Dependencies are inferred from the claim text.