Patent ID: 6596779
Filing Date: 2003-07-22
Classification: A61K,A61Q,B01F,Y10S

Abstract:
An emulsion comprising, by weight:4.5-99.5% of water; 0-95% of oil; 0-50% of active substance; an emulsifier making up the total of 100% which is the only emulsifier present, wherein the emulsifier contains 30 to 65% by weight of at least one fatty alcohol of formula ROH, wherein R is straight-chained or branched aliphatic radical, which may be saturated or unsaturated, having 1 to 4 ethylenic unsaturations, having 12 to 22 carbon atoms, the emulsion further comprising (a), (b), or (c) as follows: (a) a mixture of polyglycosides comprising polypentosides of formula (I): R1O(P)n1â€ƒâ€ƒ(I) wherein R1 is a straight-chained or branched, saturated or unsaturated aliphatic radical having 1 to 4 ethylenic unsaturations, with 16 to 18 carbon atoms, P is the residue of a pentose selected from the group consisting of arabinose and xylose, n is between 1 and 5; said mixture of polyglycosides further comprising polyhexosides of formula (II): R2O(H)n2â€ƒâ€ƒ(II) wherein R2 s a straight-chained or branched, saturated or unsaturated aliphatic radical having 1 to 4 ethylenic unsaturations, with 16 to 18 carbon atoms, H is the residue of a hexose, n2 is between 1 and 5; (b) a mixture of polyglycosides of formula (III): R3O(G1)a(G2)b(G3)c(G4)d(G5)eâ€ƒâ€ƒ(III) wherein R3 is a straight-chained or branched, saturated or unsaturated aliphatic radical having 1 to 4 ethylenic unsaturations, with 16 to 18 carbon atoms, G1, G2, G3, G4, and G5 independently of one another are residues of a pentose, wherein said pentose is selected from the group consisting of arabinose and xylose; a, b, c, d, and e being equal to 0 or 1, the sum of a, b, c, d, and e being at least 1; (c) or a mixture of a and b wherein; 1) when the emulsifier contains polyglycosides comprising polypentosides of formula (I) and polyhexosides of formula (II), the polypentosides of formula (I) represent 66 to 100% by weight of the total polyglycosides, and the polyhexosides of formula (II) constitute 0 to 34% by weight of the total polyglycosides, and when the emulsifier comprises polyglycosides of formula (III), the pentoses then constitute 66 to 100% by weight based on the total oses G1, G2, G3, G4, and G5 and the hexoses constitute from 0 to 34% by weight based on the total oses G1, G2, G3, G4, and G5 and 2-a) the emulsifier constitutes at least 2.5% of total weight of the emulsion 2-b) or the emulsifier constitutes from 1 to 2.5 % of the total weight of the emulsion and the oil is selected from the group consisting of: sweet almond oil, coconut oil, castor oil, jojoba oil, olive oil, rape seed oil, groundnut oil, hazelnut oil, palm oil, apricot kernel oil, calophyllum oil, safflower oil, avocado oil, blackcurrant seed oil, sunflower oil, corn seed oil, soya oil, cotton seed oil, alfalfa oil, barley oil, grapeseed oil, poppy oil, pumpkin oil, sesame oil, rye oil, evening primrose oil, passionflower oil, derivatives of these oils, hydrogenated oils, oils of animal origin, synthetic oils, poly-&agr;-olefines, lanolin derivatives, alkanediols having 2 to 10 carbon atoms, alcohols of formula R4â€”OH wherein R4 is a straight-chained or branched, saturated or unsaturated aliphatic radical having 1 to 4 ethylenic unsaturations and 12 to 22 carbon atoms, polyethylene glycols, polypropylene glycols, the fatty esters of formula R5â€”Oâ€”COâ€”R6 wherein R5 and R6 independently of each other denote straight-chained or branched, saturated or unsaturated aliphatic radicals having 1 to 4 ethylenic unsaturations, with 1 to 22 carbon atoms, and the silicone oils.