Percarbonate detergent compositions

C - Chemistry – Metallurgy – 11 – D

Patent

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C11D 3/39 (2006.01) C11D 3/02 (2006.01) C11D 3/04 (2006.01) C11D 3/08 (2006.01) C11D 3/10 (2006.01) C11D 3/12 (2006.01) C11D 17/00 (2006.01) C11D 17/06 (2006.01)

Patent

CA 2177676

Stable granular detergent compositions with good flow and dispensing properties are prepared using percarbonate bleach and selected sulfate salts. Thus, particles comprising builders and surfactants are prepared separately from percarbonate bleach particles of defined particle size. Water-soluble sulfate particles having a defined size range and no more than 40 ppm iron and no more than 5 ppm copper are used in the compositions. The specified moisture content of the ingredients and overall compositions improves stability and flow/dispensing properties.

Selon l'invention, on prépare des compositions détergentes granulaires stables ayant des bonnes propriétés de fluidité et de distribution en utilisant un agent de blanchiment à base de percarbonate, ainsi que des sels de sulfate sélectionnés. Ainsi, on prépare séparément les particules comprenant des adjuvants et des tensioactifs des particules comprenant l'agent de blanchiment à base de percarbonate lesquelles ont une dimension de particule déterminée. On utilise dans ces compositions des particules de sulfate solubles dans l'eau, possédant une dimension de particule déterminée ainsi qu'une quantité maximum de 40 ppm de fer et de 5 ppm de cuivre. La teneur en eau spécifiée des ingrédients et des compositions globales améliore les propriétés de stabilité et de fluidité/distribution desdites compositions.

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