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AssigneeAldivia SA
InventorsPierre Charlier De Chily, Mikaele Raynard
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This invention proposes a lanolin substitute, capable of absorbing up to at least twice its weight of water or aqueous solution or aqueous suspension. It forms true emulsions, stable over time with a capacity for water absorption superior to that of lanolin. It also possesses the known emollient, moisturizing and occlusive properties of lanolin. This substitute is usable in all the present and future areas of application of lanolin: in the cosmetics industry, dermatology, and in industrial applications (polishes, lubricants . . . ). It is obtained by hemi-synthesis from a mixture of unsaturated fatty acids, esters of unsaturated fatty acids, unsaturated hydrocarbons or unsaturated derivatives of the latter and compounds comprising or generating hydroxyl functions, such as glycerol, preferably without a catalyst and in an atmosphere devoid of oxygen. Classical thermal treatment or preferably treatment by dielectric heating.
1 Lanolin substitute characterized in that it is obtained by means of a thermal treatment of unsaturated fatty acids, esters of unsaturated fatty acids, unsaturated hydrocarbons or unsaturated derivatives of the latter, in variable proportions, with compounds comprising or generating mobile hydrogens, preferably hydroxyl functions, hereinafter “oh-reagents,” preferably without a catalyst and in an atmosphere devoid of oxygen, so that it absorbs up to at least twice its weight of water or aqueous solution or aqueous suspension, and forms true emulsions, stable over time with a water-retention capacity superior to that of lanolin:
2 Lanolin substitute according to claim 1, characterized in that one proceeds by hemi-synthesis from a mixture of unsaturated fatty acids, esters of unsaturated fatty acids, unsaturated hydrocarbons or unsaturated derivatives of the latter and compounds comprising or generating hydroxyl functions, preferably without a catalyst and in an atmosphere devoid of oxygen.
3 Lanolin substitute according to claim 1 or 2, characterized by the fact that the reagent or the reactional mixture is subjected to a dielectric heating in order to carry out the polymerization.
4 Lanolin substitute according to claim 3, characterized in that the heating is performed by use of frequencies chosen from among the microwave frequencies or the radio frequencies.
5 Lanolin substitute according to claim 3 or 4, characterized in that one proceeds with or without catalysts.
6 Lanolin substitute according to any one of claims 3 to 5, characterized in that heterogeneous or homogeneous catalysts are added to the reagent or to the reactional mixture.
7 Lanolin substitute according to claim 6, characterized in that catalysts responding to radio frequencies or to microwave frequencies, such as montmorillonite, are added to the reagent or to the reactional mixture.
8 Lanolin substitute according to any one of claims 3 to 7, characterized in that the reagent or the reactional mixture, and possibly the catalyst(s), are placed in a batch or discontinuous type reactor adapted for receiving microwave frequencies or radio frequencies.
9 Lanolin substitute according to any one of claims 3 to 8, characterized in that the reagent or the reactional mixture, and possibly the catalyst(s), are placed in a reactor adapted for performing reactions continuously.
10 Lanolin substitute according to any one of claims 3 to 9, characterized in that the frequencies range between approximately 30 GHz and approximately 300 MHz, between 2.45 GHz or 915 MHz, between approximately 300 MHz and approximately 3 MHz and between 13.56 MHz or 27.12 MHz.
11 Lanolin substitute according to any one of claims 3 to 10, characterized in that the temperature to which the reagent or the reactional mixture, and possibly the catalyst(s) are subjected ranges between 200 and 400° C., preferably between 220 and 350° C.
12 Lanolin substitute according to any one of claims 3 to 11, characterized in that the time of temperature increase is chosen between 3 and 60 minutes, preferably between 3 and 20 minutes.
13 Lanolin substitute according to any one of claims 3 to 12, characterized in that the reaction time ranges between 15 minutes and 15 hours, preferably between 15 minutes and 360 minutes, preferably still between 15 and 120 minutes.
14 Lanolin substitute according to any one of claims 3 to 13, characterized in that the polymerization is performed under an atmosphere that is normal or rich in oxygen or preferably inert;
15 Lanolin substitute according to any one of claims 3 to 14, characterized in that the polymerization is stopped by allowing the reagent or the reactional mixture to cool, or by cooling it, to a temperature below the temperature of polymerization, depending on the viscosity that one wishes to obtain.
16 Lanolin substitute according to claim 1 to 2, characterized in that the treatment is a classical thermal treatment.
17 Lanolin substitute according to claim 16, characterized in that the classical thermal treatment is performed between 100 and 400° C. and better still between 230 and 350° C., under ongoing agitation and preferably without a catalyst and under inert atmosphere.
18 Lanolin substitute according to claim 16 or 17, characterized in that the total reaction time preferably is between 3 hours and 24 hours, preferably between 3 hours and 10 hours.
19 Lanolin substitute according to claim 3, characterized in that one proceeds according to a dielectric heating treatment under microwave frequencies or high frequencies.
20 Lanolin substitute according to claim 8, characterized in that one proceeds preferably without a catalyst.
21 Lanolin substitute according to claim 19 or 20, characterized in that the microwave MW frequencies range between approximately 300 MHz and approximately 30 GHz, preferably at 915 MHz (authorized frequency with a tolerance of 1.4%) or at 2.45 GHz (authorized frequency with a tolerance of 2%), the high frequencies HF range between approximately 3 MHz and approximately 300 MHz, preferably at 13.56 MHz (authorized frequency with a tolerance of 0.05%) or at 27.12 MHz (authorized frequency with a tolerance of 0.6%.
22 Lanolin substitute according to any one of claims 19 to 21, characterized in that the reaction temperatures are between 100 and 400° C. and better still between 230 and 350° C., under ongoing agitation and preferably without a catalyst and under inert atmosphere.
23 Lanolin substitute according to any one of claims 19 to 22, characterized in that the total reaction time depends on the reagent or reagents used and on the viscosity that one wishes to obtain. It preferably is between 15 minutes and 15 hours, preferably between 15 minutes and 2 hours.
24 Lanolin substitute according to any one of claims 1 to 23, characterized in that the quantity of OH-reagents added to the reactional medium depends on the level of water absorption to be achieved for the resulting polymer as well as on the expected viscosity, and in that the “OH-reagents” can be introduced into the reactional medium at the beginning, during or at the end of reaction.
25 Lanolin substitute according to any one of claims 1 to 24, characterized in that the products obtained undergo additional treatments such as hydrogenation, bleaching, deodorizing, if the said thermal treatment imparts additional properties such as odor, color.
26 Lanolin substitute according to any one of claims 1 to 25 characterized in that the reagents are chosen from among the vegetable oils and fats and from among the polyterpenes some of which are derived from the said oils and fats.
27 Lanolin substitute according to claim 26, characterized in that as oils of vegetable origin there are mentioned, among others, rapeseed oil, sunflower oil, peanut oil, olive oil, walnut oil, corn oil, soya oil, linseed oil, carthame oil, apricot kernel oil, sweet almond oil, hemp oil, grapeseed oil, copra oil, palm oil, cottonseed oil, babassu oil, jojoba oil, sesame oil, argan oil, thistle oil, squash seed oil, raspberry oil, Karanja oil, Neem oil, poppyseed oil, Brazil nut oil, castor oil, dehydrated castor oil, hazelnut oil, wheatgerm oil, borage oil, evening primrose oil, Tung oil, tall oil, which can undergo a preliminary treatment intended to make them more reactive or, on the contrary, less reactive.
28 Lanolin substitute according to claim 26 or 27, characterized in that there is used an isolated reagent or a reactional mixture comprising two or more components, the said reactional mixtures being able to comprise equivalent proportions of each component or certain components may predominate.
29 Lanolin substitute according to any one of claims 1 to 28, characterized in that as unsaturated hydrocarbons there is used, alone or in mixture, an alkene or one of the copolymers of these alkenes.
30 Lanolin substitute according to claim 30, characterized in that the said alkene is chosen from among one or more terpenic hydrocarbons, that is, one or more isoprene polymers, or one or more isobutene, styrene, ethylene, butadiene, propene polymers.
31 Lanolin substitute according to any one of claims 1 to 30, characterized in that as unsaturated fatty acids there are used, alone or in mixture, one or more monounsaturated fatty acids such as oleic acid, palmitoleic acid, myristic acid, petroselenic acid, erucic acid;
32 Lanolin substitute according to any one of claims 1 to 31, characterized in that as esters of unsaturated fatty acids there are used, alone or in mixture, one or more of the esters obtained by esterification between a monoalcohol and/or polyol and at least one unsaturated fatty acid;
33 Lanolin substitute according to any one of claims 1 to 32, characterized in that the oils and fats of vegetable origin, the hydrocarbons as well as their derivatives, undergo a preliminary treatment intended to make them more reactive or, on the contrary, less reactive, chosen from among hydrogenation, hydroxylation, epoxidation, phosphitation, sulfonation.
34 Lanolin substitute according to any one of claims 1 to 33, characterized in that as oils and fats of animal origin there are used, among others, sperm whale oil, dolphin oil, whale oil, seal oil, sardine oil, herring oil, shark oil, codliver oil, ox foot oil, lard, horse fat.
35 Lanolin substitute according to any one of claims 1 to 34, characterized in that the “OH-reagents” comprising or generating hydroxyl functions are chosen from among the alcohols, the aminoalcohols, the epoxides.
36 Lanolin substitute according to claim 35, characterized in that as alcohols there are used, alone or in mixture, one or more primary, secondary and/or tertiary mono- or polyalcohols such as methanol, ethanol, butanol, glycerol, glycol, sorbitol, mannitol, xylitol, neopentylglycol, pentaerythritol, vitamins (for example tocopherol, ascorbic acid, retinol), sterols (including the phytosterols), hemiacetals (for example 1-ethoxy-1-ethanol) and their analogues.
37 Lanolin substitute according to claim 35 to 36, characterized in that as aminoalcohols there are used, alone or in mixture, monoethanolamine MEA, diethanolamine DEA, triethanolamine TEA, 3-amino 1,2 propanediol, 1-amino 2-propanol, 2-2′-amino ethoxy ethanol.
38 Lanolin substitute according to any one of claims 35 to 37, characterized in that as epoxides there can be used, alone or in mixture, 1,2-epoxy-9-decene, 3-4 epoxy-1-butene, 2-3 epoxy-1-propanol, fatty esters obtained by esterification between 2-3 epoxy-1-propanol and a fatty acid (for example Cardura E10@).
39 Lanolin substitute according to any one of claims 35 to 38, characterized in that the alcohols, the aminoalcohols, the epoxides as well as their derivatives undergo a preliminary treatment intended to make them more reactive or, on the contrary, less reactive, chosen from among hydrogenation, hydroxylation, epoxidation, phosphitation, sulfonation.
40 Lanolin substitute according to any one of claims 1 to 39, characterized in that as catalysts or additives, there are understood the usual acid catalysts (paratoluenesulfonic acid, sulfuric acid, phosphoric acid, perchloric acid), the usual basic catalysts (soda, potassium hydroxide, alcoholate of alkaline metals and of alkaline-earth metals, sodium acetate, triethylamines, derivatives of pyridine), acid and/or basic resins of the Amberlite™, Amberlyst™, Purolite™, Dowex™, Lewatit™ type, the zeoliths and enzymes, the carbon blacks and activated carbon fibers.
41 Lanolin substitute according to any one of claims 1 to 40, characterized in that there is added from 0.1 to 30%, preferably from 0.1 to 6% of “OH-reagent,” preferably 1 or 3%.
42 Lanolin substitute according to claim 41, characterized in that there is added from 0.1 to 5, preferably 1 or 3% of glycerol.
43 Lanolin substitute according to claim 42, characterized in that the OH reagent is chosen from among glycerol, sorbitol, MEA, polyglycerol, vitamin C or E.
44 Cosmetic, dermatological or industrial-use formulations, characterized in that they contain at least one product according to claim 1.
45 Formulation according to claim 44, characterized in that it involves a formulation for a care cream for the hands, comprising the following components:
46 Formulation according to claim 45, characterized in that it involves a formulation for a multipurpose nutritive cream comprising:
47 Formulation according to claim 46, characterized in that it involves a formulation of a multipurpose nutritive cream comprising:
48 Formulation according to claim 44, characterized in that it involves a formulation for ointment comprising:
49 Formulation according to claim 44, characterized in that it involves a formulation for a lipstick (wand)
50 Applications of new lanolin substitutes according to claim 1 in