A - Human Necessities – 61 – K
Patent
A - Human Necessities
61
K
A61K 8/41 (2006.01) A61K 8/04 (2006.01) A61K 8/34 (2006.01) A61K 8/898 (2006.01) A61Q 5/12 (2006.01)
Patent
CA 2746326
Disclosed is a method of preparing a personal care composition, comprising the steps: (1) preparing a hot oil phase comprising the surfactant and the high melting point fatty compound; (2) preparing a cold aqueous phase comprising the aqueous carrier; and (3) mixing the oil phase and the aqueous phase to form an emulsion; wherein the mixing step (3) comprises the following detailed steps: (3-1) feeding either of the oil phase or the aqueous phase into a high shear field having an energy density of 1.0x10 2 J/m3 or more; (3-2) feeding the other phase directly to the field; and (3-3) forming an emulsion. The method further requires that the surfactant is mono-alkyl cationic surfactant and the composition is substantially free of di-alkyl cationic surfactants.
L'invention porte sur un procédé de préparation d'une composition de soins personnels, comprenant les étapes de : (1) préparation d'une phase huileuse chaude renfermant le tensio-actif et le composé gras à point de fusion élevé; (2) préparation d'une phase aqueuse froide renfermant le support aqueux; et (3) mélange de la phase huileuse et de la phase aqueuse pour former une émulsion. L'étape de mélange (3) comprend en détail les étapes suivantes : (3-1) introduction, soit de la phase huileuse, soit de la phase aqueuse dans un champ à cisaillement élevé présentant une densité d'énergie de 1,0 x 102 J/m3 ou plus; (3-2) introduction de l'autre phase directement dans le champ; et (3-3) formation d'une émulsion. Le procédé exige en outre que le tensio-actif soit un tensio-actif cationique monoalkylé, et que la composition soit sensiblement exempte de tensio-actifs cationiques dialkylés.
Okada Toshiyuki
Yang Jian-Zhong
Yokogi Junichi
Mbm Intellectual Property Law Llp
The Procter & Gamble Company
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