Process for making non-staining colored particles for...

C - Chemistry – Metallurgy – 11 – D

Patent

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Details

C11D 17/00 (2006.01) C09B 63/00 (2006.01) C09B 67/02 (2006.01) C11D 3/22 (2006.01) C11D 3/37 (2006.01) C11D 3/40 (2006.01) C11D 11/00 (2006.01)

Patent

CA 2368600

A process for forming a non-staining colored composite particle suitable for incorporation in a bleach-containing or a non-bleach-containing liquid detergent composition is disclosed. The process includes the steps of forming a colored liquid dispersion of pigment particles in a first liquid medium wherein the size of the pigment particles in the colored liquid dispersion is no greater than about µm. The process includes the step of mixing the colored liquid dispersion with a polymeric material and a second liquid medium to form a sprayable colored polymeric material. The process also includes the step of spraying the colored polymeric material on a composite particle and forming a colored polymeric coating on the composite particle. A non-staining colored particle and a liquid ADW detergent composition are also disclosed.

L'invention concerne un procédé permettant la préparation d'une particule composite colorée ne déteignant pas, se prêtant à l'incorporation dans une composition de détergent liquide avec ou sans agent de blanchiment. Ce procédé comprend les étapes suivantes : on prépare une dispersion liquide colorée contenant des particules de pigment dans un premier milieu liquide, la dimension des particules de pigment dans la dispersion colorée ne dépassant pas 5 mu m environ. On mélange cette dispersion liquide colorée à un matériau polymère et à un second milieu liquide afin de préparer une matière polymère colorée pulvérisable. On pulvérise cette matière polymère colorée sur une particule composite afin de former une couche polymère colorée sur cette particule composite. L'invention concerne également une particule coloré ne déteignant pas et une composition détergente liquide pour lave-vaisselle automatique.

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