Process for making particulate laundry additive composition

C - Chemistry – Metallurgy – 11 – D

Patent

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Details

C11D 3/50 (2006.01) C11D 11/00 (2006.01) C11D 17/00 (2006.01) C11D 17/06 (2006.01)

Patent

CA 2265804

A process for producing a particulate laundry additive composition for perfume delivery primarily in laundry detergent and fabric softening products is disclosed. The aforementioned needs in the art are met by the present invention which provides a process for producing a particulate laundry additive composition for perfume delivery primarily in laundry detergent and fabric softening products. The process essentially includes the steps of inputting an aqueous mixture a first encapsulating material and porous carrier particles (e.g., zeolite X) into an extruder, and thereafter, extruding the first encapsulating material, which is preferably a glassy carbohydrate material, with porous carrier particles, preferably loaded with a perfume, so as to form a hot extrudate. Subsequently, the steps of cooling and grinding the extrudate into granules is completed. In the final step, a second encapsulating material is coated onto the granules to enrobe further the perfume in the carrier particles.

On décrit un procédé de production d'une composition particulaire de lessive contenant des additifs et destinée à libérer un parfum, notamment dans des lessives détergentes et dans des assouplissants du linge. La présente invention satisfait à de telles exigences, car elle concerne un procédé de production d'une composition particulaire de lessive contenant des additifs et destinée à libérer un parfum, notamment dans des lessives détergentes et dans des assouplissants du linge. Ce procédé comprend essentiellement les étapes consistant à introduire, dans une extrudeuse, un mélange aqueux, un premier matériau d'enrobage et des particules à support poreux (par exemple une zéolithe X), puis à extruder le premier matériau d'enrobage, lequel est préférablement un hydrate de carbone vitreux, avec ces particules porteuses, de préférence, d'un parfum, de façon à former un produit d'extrusion chaud, puis à exécuter les étapes de refroidissement du produit d'extrusion et de broyage de celui-ci en granules. Lors de l'étape finale, on enrobe les granules à l'aide d'un second matériau d'enrobage, afin d'enfermer plus encore le parfum dans les particules à support poreux.

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