Abstract:
PURPOSE: A nanoemulsion based on fatty esters of oxyethylated or non-oxylated sorbitan is provided, which is stable in preservation; maintains excellent transparency; has good cosmetic property; and contains a lot of oil. An use of the nanoemulsion in the fields of cosmetics, dermatology and/or ophthalmology is also provided. CONSTITUTION: A nanoemulsion based on fatty esters of oxyethylated or non-oxylated sorbitan comprises of: a surfactant being solid under 45°C, selected from sorbitan fatty ester and oxyethylated sorbitan fatty ester; one or more oil having over 400 of molecular weight; more than one of ionic pro-bipolar lipid selected from a group comprising alkalic salt of dicetyl and dimyristyl phosphate, alkalic salt of cholesterol sulfate, alkalic salt of cholesterol phosphate, lipoamino acid, sodium salt of phsphatidic acid, cationic pro-bipolar lipid, and alkyl sulfon derivatives; and weight ratio of oil phase to the surfactant is 2-10, and average size of oil globule of the nanoemulsion is smaller than 100nm.
Abstract:
An oil-in-water nanoemulsion with a droplet size of less than 100 nm contains an oil (I) with a molecular weight above 400 and an alkyl ether citrate surfactant (II), the weight ratio of oil phase to (II) being 2-10:1. An Independent claim is also included for production of the composition by mixing the aqueous phase with the oil phase under vigorous agitation at 10-80 degrees C and homogenizing the mixture at 60-180 MPa.
Abstract:
PURPOSE: Nanoemulsion from alkoxylated alkenyl succinate or alkoxylate alkenyl succinate of glucose, and its preparation method are provided, for moisturizing the skin and/or mucous membrane or treating the eyes in cosmetics, dermatology, ophthalmology and/or pharmaceutics. CONSTITUTION: A nanoemulsion comprises 0.2-15 wt% of at least one surfactant selected from alkoxylated alkenyl succinate, alkoxylated alkenyl succinate of glucose and alkoxylated alkenyl succinate of methylglucose; at least one oil whose molecular weight is more than 400; optionally 0.01-5 wt% of at least one ionic amphiphilic lipid selected from the group consisting of anionic amphiphilic lipids and alkylsulfonic acid derivatives; 0.01-30 wt% of optionally additives for improving transparency, selected from alcohols of low molecular weight, glycol, sugar and their mixture; and optionally cosmetic, dermatological, ophthalmological or pharmaceutical active ingredients, wherein the ratio of the oil to the surfactant is 2-10, preferably 3-6 by weight, and the nanoemulsion contains the oil phase diffused in oil drop and aqueous phase whose number mean size is less than 100 nm. The nanoemulsion is prepared by stirring the aqueous phase and the oily phase strongly at the temperature of 10-80°C to mix them; and homogenizing the mixture at the pressure of 6X10¬6 - 18X10¬7 Pa.
Abstract:
PURPOSE: Nanoemulsion based on alkylethercitrate is provided to give the stability of storage, the maintenance of good transparency and the incorporation of bulky oil with good cosmetic property. In addition to the nanoemulsion above, their use in cosmetics, skin science, pharmacy and/or ophthalmology are provided. CONSTITUTION: A nanoemulsion is comprised of oil phase dispersed in water phase, has less than 100nm of number average size of oil small sphere, contains anionic surfactants selected from alkylethercitrate, also at least one oil having more than 400 of molecular weight, and has 2 to 10 at their ratios of oil phase for amounts of the surfactant. The nanoemulsion is characterized in that its turbidity is 60 to 600 NTUs. The amount of the surfactant is characterized by being 0.2 to 15wt%, preferably 3 to 6wt% based on total weight of nanoemulsion.
Abstract:
PURPOSE: A nanoemulsion based on fatty esters of sugar or fatty ethers of sugar is provided, which has stability in preservation; maintains excellent transparency; has good cosmetic property; and contains a lot of oil. An use of the nanoemulsion in the fields of cosmetics, dermatology and/or ophtalmology is also provided. CONSTITUTION: A nanoemulsion based on fatty esters of sugar or fatty ethers of sugar comprises of: a surfactant(C8-C22 fatty esters of sucrose, maltose, glucose and fructose, esters of C14-C22 fatty acid and methylglucose, alkyl polyglucoside and mixture thereof) being solid under 45°C, selected from an esters of fatty acid and sugar, and an ether of fatty alcohol and sugar; one or more oil having over 400 of molecular weight. In the o/w nanoemulsion, weight ratio of oil phase to the surfactant is 2-10, and average size of an oil globule of the nanoemulsion is smaller than 100nm by passing through high-pressure homogenizer more than one times.