C - Chemistry – Metallurgy – 11 – D
Patent
C - Chemistry, Metallurgy
11
D
C11D 3/39 (2006.01) C11D 3/37 (2006.01) C11D 3/395 (2006.01) D06L 3/02 (2006.01)
Patent
CA 2215949
There is provided a process for making composite particulates comprising from about 1 % to about 50 % by weight of discrete particles of water-insoluble diacyl peroxide having a mean particle size of less than about 300 microns and from about 30 % to about 99 % by weight of a carrier material which melts in the range of from about 38 °C to about 77 °C. This preparation process involves the steps of: (i) mixing the particles of water-insoluble diacyl peroxide into the carrier material while the carrier material is in a molten state; and then (ii) rapidly cooling and solidifying the resultant mixture; and thereafter (iii) working the solidified mixture if or as necessary to form the composite particulates therefrom. Detergent compositions containing the composite particulates are also provided.
La présente invention concerne un procédé de fabrication de matière particulaire composite comportant entre 1 et 50 % en poids de particules séparées de peroxyde de diacyle insoluble dans l'eau, possédant une taille moyenne des particules inférieure à environ 300 microns, et entre 30 à 99 % d'un matériau de support dont la température de fusion se situe entre 38 et 77 DEG C. Ce procédé de préparation consiste à (i) mélanger les particules du peroxyde de diacyle insoluble dans l'eau avec le matériau de support à l'état fondu; et (ii) refroidir et solidifier rapidement le mélange résultant; et ensuite (iii) travailler le mélange solidifié si nécessaire ou aussi longtemps que nécessaire afin d'en obtenir une matière particulaire composite. L'invention décrit également des compositions détergentes contenant la matière particulaire composite.
Aquino Melissa Dee
Painter Jeffrey Donald
Wagner Bruce Ned
Dimock Stratton Llp
The Procter & Gamble Company
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