A - Human Necessities – 61 – K
Patent
A - Human Necessities
61
K
A61K 8/06 (2006.01) A23D 7/00 (2006.01) A23D 7/02 (2006.01) A61K 9/107 (2006.01) A61Q 19/00 (2006.01) A61Q 19/08 (2006.01)
Patent
CA 2535593
The invention relates to a stable oil-in-water emulsion which is obtained from an air/water pre-emulsion containing: a preferably-nonionic surfactant; a cosurfactant selected from hydrophilic compounds, preferably comprising at least one hydroxyl group, which are chosen, for example, from the polyol family; and an aqueous phase. According to the invention, the aforementioned three elements are used in ratios that are selected from the ordered liquid crystal structure zone of the phase diagram of said three elements and/or in ratios that are selected such that the structure of the mixture of said three components when observed under a microscope in polarised light displays birefringence characteristics. Moreover, a simple or complex fatty substance is added to the above-mentioned pre-emulsion by means of mild stirring, preferably without exerting a shear force. The invention also relates to the method of preparing such emulsions and to a simple formulation method making use of said emulsions.
La présente invention porte sur une émulsion huile-dans~eau stable, obtenue à partir d'une pré-émulsion air-dans-eau comprenant: - un tensio-actif de préférence non-ionique, - un co-tensioactif choisi parmi les composés hydrophiles, de préférence comprenant au moins un groupe hydroxyle, choisis notamment dans la famille des polyols, une phase aqueuse, dans des rapports choisis dans la zone de structure li~quide-cristal ordonnée du diagramme de phases de ces trois éléments, et/ou dans des rapports choisis de façon à ce que la structure du mélange de ces trois constituants observée au microscope en lumière polarisée présente des caractéristiques de biréfringence, un corps gras simple ou complexe étant ajouté à ladite pré-émulsion par mélange modéré, de préférence sans exercer de force de cisaillement, elle porte également sur le procédé de préparation de telles émulsions et sur un pro~cédé simple de formulation mettant en oeuvre lesdites émulsions.
Rossow Jean
Rossow Nicolas
Rossow Veronique
Goudreau Gage Dubuc
J. & C. International
LandOfFree
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