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C - Chemistry – Metallurgy – 11 – D

Patent

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Details

C11D 17/06 (2006.01) C11D 3/22 (2006.01) C11D 3/37 (2006.01) C11D 3/386 (2006.01) C11D 11/00 (2006.01) C11D 17/00 (2006.01)

Patent

CA 2439523

The present invention relates to a water-soluble and/or a water-dispersible particle having: a mean particle diameter of less than 20mm, preferably less than 2mm; a hardness (H) of 500 MPa or less, when measured at a temperature of 20~C, a relative humidity of 40%; and a fracture toughness (Kc) of 0.04 MPa.m1/2 or greater, when measured at a temperature of 20~C, a relative humidity of 40% and a strain rate of from 1x10-4 to 1x104 s-1, said particle comprises an active ingredient and a matrix suitable for delivering said active ingredient to an aqueous environment, said particle is not freeze dried.

La présente invention concerne une particule hydrosoluble et/ou dispersable dans l'eau présentant : un diamètre moyen de particule inférieur à 20 mm, de préférence inférieur à 2 mm ; une dureté maximale (H) de 500 MPa, mesurée à une température de 20 ·C, une humidité relative de 40 % ; et une ténacité (Kc) d'au moins 0,04 MPa.m?1/2¿, mesurée à une température de 20 ·C, une humidité relative de 40 % et une vitesse de dilatation entre 1x10?-4¿ et 1x10?4¿ s?-1¿, ladite particule comportant un ingrédient actif et une matrice apte à délivrer ledit ingrédient actif à un milieu aqueux, ladite particule n'étant pas lyophilisée.

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