PROCESS FOR PREPARING BODIES CONTAINING A PEROXY ACID COMPOUND AND COMPOSITIONS COMPRISING SAID BODIES

An improved process for preparing dry particulate bodies containing a solid peroxyacid compound is disclosed, comprising the steps of (A) forming a water-wet mixture of a solid peroxyacid compound and a hydratable material having a temperature of hydration of up to 40 DEG C, at a temperature which i...

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Bibliographische Detailangaben
Hauptverfasser: WILLIAM JOHN ILEY, TIMOTHY DAVID FINCH
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:An improved process for preparing dry particulate bodies containing a solid peroxyacid compound is disclosed, comprising the steps of (A) forming a water-wet mixture of a solid peroxyacid compound and a hydratable material having a temperature of hydration of up to 40 DEG C, at a temperature which is higher than the temperature of hydration of the hydratable material; (B) forming the mixture of (A) into particles of the desired shape and size before, during or after cooling the mass to below the temperature of hydration of the hydratable material; and (C) drying the particles obtained from step (B), the improvement being that in step (A) a film-forming material is incorporated in, and intimately mixed with, the water-wet mixture, forming a mix having a pH of below 7. The peroxyacid-containing bodies obtainable therefrom are extremely suitable for use as a bleach additive and for the incorporation in bleaching and/or detergent powder compositions.