Process for preparing a free-flowing particulate detergent...

C - Chemistry – Metallurgy – 11 – D

Patent

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C11D 17/06 (2006.01) C11D 11/02 (2006.01)

Patent

CA 2224518

The instant invention provides a process which produces a detergent composition that exhibits improved solubility as well as improved flow properties. The improved solubility can be detected by evidence of increased solubility of the surfactants in the washing solution and/or by the decreased amount of detergent residue left on laundered clothes. It has now been discovered that incorporating nonionic surfactant on and/or in spray-dried detergent granules before cooling the granules and while they are relatively hot, and thereafter cooling and mixing the granules improves the solubility and flow properties of the granules.

Cette invention concerne un procédé de production d'une composition détergente possédant une meilleure solubilité et de meilleures propriétés d'écoulement. La solubilité améliorée peut être détectée du fait de la solubilité accrue des tensioactifs dans la solution de lavage et/ou par la moindre quantité de résidus de détergent laissés sur les vêtements blanchis. On a découvert que l'adjonction d'un tensioactif non ionique sur et/ou dans les granules de détergent séchés par pulvérisation, avant leur refroidissement et alors qu'ils sont encore relativement chauds, suivie de leur refroidissement et de leur mélange, améliore leur solubilité et leur propriétés d'écoulement.

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