Procedure for obtaining an aqueous dispersion of alcohols and acids from jojoba oil, processes for obtaining self-emulsified jojoba oil, aqueous dispersions and emulsions of jojoba oil in the same and pharmaceutical or cosmetic compositions comprising the same

A process for obtaining an aqueous dispersion of alcohols and acids from jojoba oil useful as a vehicle for pharmaceutical and cosmetic compositions, comprising the steps of:

• a) saponifying jojoba oil esters (I) by a base (II) to produce a mixture of carboxylates of formula (III) and jojoba alcohols of formula (IV), according to the following reaction:
• wherein:
• R1, R2 are alkenes of C20-C22;
• M are alkali metals or alkali earth metals and n is 1 or 2 in a reaction medium comprising a solvent, wherein the solvent comprises a solution of methyl alcohol and water at boiling temperature;
• b) evaporating the solvent to dryness by means of reduced pressure to obtain a product;
• c) adding to the product obtained in step b) an aqueous solution of a strong inorganic acid or of an organic acid, thus obtaining a solid or semisolid product comprising a mixture of fatty acids and alcohols of jojoba oil in an aqueous medium;
• d) separating the solid or semisolid product from the aqueous medium;
• e) salifying the fatty acids of the solid or semisolid product separated in step d) by adding an aliphatic amine previously dissolved in a suitable volume of a co-solvent to obtain a product;
• and
• f) dispersing the product of step e) in a sufficient amount of water to obtain a transparent or quasi-transparent high-viscosity product.