Tablets with improved resistance to breakage

C - Chemistry – Metallurgy – 11 – D

Patent

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Details

C11D 17/00 (2006.01)

Patent

CA 2551158

The invention relates to a process for making a detergent tablet, comprising the steps of: (a) selecting a binder from: sorbitol, xylitol, erythritol, C10- C18 phenol alkoxylates with 20 to 80 equivalents of alkoxylation; C12-C24 alcohol alkoxylates with 50 to 250 equivalents of alkoxylation; castor oil alkoxylates with 50 to 100 equivalents of alkoxylation; mono-, di- and/or tri- esters of glycerin with C12-C25 fatty acids; C10 to C25 fatty acids; and mixtures thereof; (b) heating the binder to above its melting point to form a molten binder; (c) applying the molten binder to a base powder comprising a premix of detergent components, to form a detergent composition; and (d) forming the detergent composition into tablets. The present invention is further directed to a tablet composition obtainable by such process and to the use of such a binder, in its molten form for improving the resistance to breakage of a detergent tablet.

L'invention porte sur un procédé de fabrication de pastilles détergentes comportant les étapes suivantes: (a) sélection d'un liant parmi: le sorbitol, l'xylitol, l'érythritol, des alcoxylates de phénol C¿10?-C¿18? à 20 à 80 équivalents d'alcoxylation, des alcoxylates d'alcools C¿12?-C¿24? à 50 à 250 équivalents d'alcoxylation, des alcoxylates d'huile de ricin à 50 à 100 équivalents d'alcoxylation, des mono-, di- et/ou tri-esters de glycérine d'acides gras C¿12?-C¿25?, C¿10?, des acides gras C¿25?, et leurs mélanges; (b) chauffage du liant au-dessus de son point de fusion; (c) application du liant fondu sur une sur une poudre de base consistant en un prémélange d'éléments détergents pour former une composition détergente; et (d) former des pastilles avec la composition détergente. L'invention porte également sur la composition de pastilles obtenues à l'aide dudit procédé et sur l'utilisation d'un tel liant à l'état fondu pour améliorer la résistance à la rupture de pastilles détergentes.

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