EP3445326A1 - Procédé de formation d'une émulsion - Google Patents
Procédé de formation d'une émulsionInfo
- Publication number
- EP3445326A1 EP3445326A1 EP17721779.1A EP17721779A EP3445326A1 EP 3445326 A1 EP3445326 A1 EP 3445326A1 EP 17721779 A EP17721779 A EP 17721779A EP 3445326 A1 EP3445326 A1 EP 3445326A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- emulsion
- dermo
- composition
- microfibers
- cosmetic composition
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 239000000839 emulsion Substances 0.000 title claims abstract description 58
- 238000000034 method Methods 0.000 title claims abstract description 31
- 239000000203 mixture Substances 0.000 claims abstract description 61
- 229920001410 Microfiber Polymers 0.000 claims abstract description 33
- 239000003658 microfiber Substances 0.000 claims abstract description 33
- 239000002537 cosmetic Substances 0.000 claims abstract description 29
- 239000003995 emulsifying agent Substances 0.000 claims abstract description 21
- 125000002091 cationic group Chemical group 0.000 claims abstract description 18
- 238000006467 substitution reaction Methods 0.000 claims abstract description 14
- 229920003043 Cellulose fiber Polymers 0.000 claims abstract description 11
- 229920002678 cellulose Polymers 0.000 claims description 22
- 239000001913 cellulose Substances 0.000 claims description 21
- 239000000126 substance Substances 0.000 claims description 16
- 239000000835 fiber Substances 0.000 claims description 15
- 238000000265 homogenisation Methods 0.000 claims description 6
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- 238000002360 preparation method Methods 0.000 claims description 6
- 239000000084 colloidal system Substances 0.000 claims description 3
- 238000003801 milling Methods 0.000 claims description 3
- 230000000699 topical effect Effects 0.000 claims description 3
- 239000008346 aqueous phase Substances 0.000 claims description 2
- 239000007764 o/w emulsion Substances 0.000 claims description 2
- 235000019895 oat fiber Nutrition 0.000 claims description 2
- 239000003921 oil Substances 0.000 description 25
- 235000019198 oils Nutrition 0.000 description 24
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- 239000000725 suspension Substances 0.000 description 10
- 241000196324 Embryophyta Species 0.000 description 9
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- 206010061592 cardiac fibrillation Diseases 0.000 description 6
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- SGVYKUFIHHTIFL-UHFFFAOYSA-N 2-methylnonane Chemical compound CCCCCCCC(C)C SGVYKUFIHHTIFL-UHFFFAOYSA-N 0.000 description 2
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- 235000004431 Linum usitatissimum Nutrition 0.000 description 2
- 240000006240 Linum usitatissimum Species 0.000 description 2
- 241000208467 Macadamia Species 0.000 description 2
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- 241001135917 Vitellaria paradoxa Species 0.000 description 2
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- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 description 2
- 235000002017 Zea mays subsp mays Nutrition 0.000 description 2
- 239000013543 active substance Substances 0.000 description 2
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- 239000007900 aqueous suspension Substances 0.000 description 2
- 125000004432 carbon atom Chemical group C* 0.000 description 2
- 235000005822 corn Nutrition 0.000 description 2
- 235000014113 dietary fatty acids Nutrition 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- SNRUBQQJIBEYMU-UHFFFAOYSA-N dodecane Chemical compound CCCCCCCCCCCC SNRUBQQJIBEYMU-UHFFFAOYSA-N 0.000 description 2
- 239000000194 fatty acid Substances 0.000 description 2
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- 239000000499 gel Substances 0.000 description 2
- 229940087559 grape seed Drugs 0.000 description 2
- 238000000227 grinding Methods 0.000 description 2
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- 210000001724 microfibril Anatomy 0.000 description 2
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- RYYKJJJTJZKILX-UHFFFAOYSA-M sodium octadecanoate Chemical class [Na+].CCCCCCCCCCCCCCCCCC([O-])=O RYYKJJJTJZKILX-UHFFFAOYSA-M 0.000 description 2
- PRAKJMSDJKAYCZ-UHFFFAOYSA-N squalane Chemical compound CC(C)CCCC(C)CCCC(C)CCCCC(C)CCCC(C)CCCC(C)C PRAKJMSDJKAYCZ-UHFFFAOYSA-N 0.000 description 2
- 235000020354 squash Nutrition 0.000 description 2
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- JNYAEWCLZODPBN-JGWLITMVSA-N (2r,3r,4s)-2-[(1r)-1,2-dihydroxyethyl]oxolane-3,4-diol Chemical class OC[C@@H](O)[C@H]1OC[C@H](O)[C@H]1O JNYAEWCLZODPBN-JGWLITMVSA-N 0.000 description 1
- BCNXQFASJTYKDJ-UHFFFAOYSA-N 1,1,2,2,3,3,4,4,5-nonafluoro-5-(trifluoromethyl)cyclopentane Chemical compound FC(F)(F)C1(F)C(F)(F)C(F)(F)C(F)(F)C1(F)F BCNXQFASJTYKDJ-UHFFFAOYSA-N 0.000 description 1
- RBTROQHBNLSUTL-UHFFFAOYSA-N 1,1,2,2,3,4-hexafluoro-3,4-bis(trifluoromethyl)cyclobutane Chemical compound FC(F)(F)C1(F)C(F)(F)C(F)(F)C1(F)C(F)(F)F RBTROQHBNLSUTL-UHFFFAOYSA-N 0.000 description 1
- BJBXQQZMELYVMD-UHFFFAOYSA-N 2,2,3,3,4,5,5,6,6-nonafluoromorpholine Chemical compound FN1C(F)(F)C(F)(F)OC(F)(F)C1(F)F BJBXQQZMELYVMD-UHFFFAOYSA-N 0.000 description 1
- PQMAKJUXOOVROI-UHFFFAOYSA-N 2,2,3,3,5,5,6,6-octafluoro-4-(trifluoromethyl)morpholine Chemical compound FC(F)(F)N1C(F)(F)C(F)(F)OC(F)(F)C1(F)F PQMAKJUXOOVROI-UHFFFAOYSA-N 0.000 description 1
- 229940043268 2,2,4,4,6,8,8-heptamethylnonane Drugs 0.000 description 1
- SXYHZEQKWNODPB-UHFFFAOYSA-N 2-[difluoro(methoxy)methyl]-1,1,1,2,3,3,3-heptafluoropropane;1,1,1,2,2,3,3,4,4-nonafluoro-4-methoxybutane Chemical compound COC(F)(F)C(F)(F)C(F)(F)C(F)(F)F.COC(F)(F)C(F)(C(F)(F)F)C(F)(F)F SXYHZEQKWNODPB-UHFFFAOYSA-N 0.000 description 1
- 240000006108 Allium ampeloprasum Species 0.000 description 1
- 235000005254 Allium ampeloprasum Nutrition 0.000 description 1
- 244000125300 Argania sideroxylon Species 0.000 description 1
- 235000003255 Carthamus tinctorius Nutrition 0.000 description 1
- 244000020518 Carthamus tinctorius Species 0.000 description 1
- 235000013162 Cocos nucifera Nutrition 0.000 description 1
- 244000060011 Cocos nucifera Species 0.000 description 1
- 235000002787 Coriandrum sativum Nutrition 0.000 description 1
- 244000018436 Coriandrum sativum Species 0.000 description 1
- 241000195493 Cryptophyta Species 0.000 description 1
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical class OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 1
- 244000004281 Eucalyptus maculata Species 0.000 description 1
- 235000010654 Melissa officinalis Nutrition 0.000 description 1
- 244000062730 Melissa officinalis Species 0.000 description 1
- 239000004909 Moisturizer Substances 0.000 description 1
- 235000014643 Orbignya martiana Nutrition 0.000 description 1
- 244000021150 Orbignya martiana Species 0.000 description 1
- 239000004264 Petrolatum Substances 0.000 description 1
- 235000019484 Rapeseed oil Nutrition 0.000 description 1
- 235000004443 Ricinus communis Nutrition 0.000 description 1
- 240000000111 Saccharum officinarum Species 0.000 description 1
- 235000007201 Saccharum officinarum Nutrition 0.000 description 1
- 240000003935 Sclerocarya birrea Species 0.000 description 1
- 235000001836 Sclerocarya caffra Nutrition 0.000 description 1
- 244000044822 Simmondsia californica Species 0.000 description 1
- 235000004433 Simmondsia californica Nutrition 0.000 description 1
- 150000001335 aliphatic alkanes Chemical class 0.000 description 1
- 239000010775 animal oil Substances 0.000 description 1
- 125000000129 anionic group Chemical group 0.000 description 1
- 239000003945 anionic surfactant Substances 0.000 description 1
- 230000001153 anti-wrinkle effect Effects 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 239000010480 babassu oil Substances 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 238000004061 bleaching Methods 0.000 description 1
- 235000020113 brazil nut Nutrition 0.000 description 1
- 235000014121 butter Nutrition 0.000 description 1
- 239000004359 castor oil Substances 0.000 description 1
- 235000019438 castor oil Nutrition 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000004581 coalescence Methods 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000008271 cosmetic emulsion Substances 0.000 description 1
- 239000006071 cream Substances 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000004945 emulsification Methods 0.000 description 1
- 230000002255 enzymatic effect Effects 0.000 description 1
- 150000002170 ethers Chemical class 0.000 description 1
- 150000004665 fatty acids Chemical class 0.000 description 1
- 238000005189 flocculation Methods 0.000 description 1
- 230000016615 flocculation Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
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- 239000003349 gelling agent Substances 0.000 description 1
- 125000005456 glyceride group Chemical group 0.000 description 1
- ZEMPKEQAKRGZGQ-XOQCFJPHSA-N glycerol triricinoleate Natural products CCCCCC[C@@H](O)CC=CCCCCCCCC(=O)OC[C@@H](COC(=O)CCCCCCCC=CC[C@@H](O)CCCCCC)OC(=O)CCCCCCCC=CC[C@H](O)CCCCCC ZEMPKEQAKRGZGQ-XOQCFJPHSA-N 0.000 description 1
- MNWFXJYAOYHMED-UHFFFAOYSA-N heptanoic acid group Chemical group C(CCCCCC)(=O)O MNWFXJYAOYHMED-UHFFFAOYSA-N 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 229920006007 hydrogenated polyisobutylene Polymers 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000011872 intimate mixture Substances 0.000 description 1
- KUVMKLCGXIYSNH-UHFFFAOYSA-N isopentadecane Natural products CCCCCCCCCCCCC(C)C KUVMKLCGXIYSNH-UHFFFAOYSA-N 0.000 description 1
- 229940119170 jojoba wax Drugs 0.000 description 1
- 239000004816 latex Substances 0.000 description 1
- 229920000126 latex Polymers 0.000 description 1
- TWNIBLMWSKIRAT-VFUOTHLCSA-N levoglucosan Chemical group O[C@@H]1[C@@H](O)[C@H](O)[C@H]2CO[C@@H]1O2 TWNIBLMWSKIRAT-VFUOTHLCSA-N 0.000 description 1
- 239000000865 liniment Substances 0.000 description 1
- 239000006210 lotion Substances 0.000 description 1
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- 239000002736 nonionic surfactant Substances 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 125000005473 octanoic acid group Chemical class 0.000 description 1
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- 239000004006 olive oil Substances 0.000 description 1
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- 239000003960 organic solvent Substances 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
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- 239000012188 paraffin wax Substances 0.000 description 1
- LOQGSOTUHASIHI-UHFFFAOYSA-N perfluoro-1,3-dimethylcyclohexane Chemical compound FC(F)(F)C1(F)C(F)(F)C(F)(F)C(F)(F)C(F)(C(F)(F)F)C1(F)F LOQGSOTUHASIHI-UHFFFAOYSA-N 0.000 description 1
- 239000002304 perfume Substances 0.000 description 1
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- 230000010363 phase shift Effects 0.000 description 1
- 150000003904 phospholipids Chemical class 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920006255 plastic film Polymers 0.000 description 1
- 229920001983 poloxamer Chemical class 0.000 description 1
- 229920001296 polysiloxane Chemical class 0.000 description 1
- RMGVATURDVPNOZ-UHFFFAOYSA-M potassium;hexadecyl hydrogen phosphate Chemical compound [K+].CCCCCCCCCCCCCCCCOP(O)([O-])=O RMGVATURDVPNOZ-UHFFFAOYSA-M 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 230000002335 preservative effect Effects 0.000 description 1
- 230000003449 preventive effect Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000006254 rheological additive Substances 0.000 description 1
- 239000003813 safflower oil Substances 0.000 description 1
- 229940046303 sodium cetostearyl sulfate Drugs 0.000 description 1
- CLBALUNQCMWJSU-UHFFFAOYSA-L sodium;hexadecyl sulfate;octadecyl sulfate Chemical compound [Na+].CCCCCCCCCCCCCCCCOS([O-])(=O)=O.CCCCCCCCCCCCCCCCCCOS([O-])(=O)=O CLBALUNQCMWJSU-UHFFFAOYSA-L 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000010902 straw Substances 0.000 description 1
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- 239000002562 thickening agent Substances 0.000 description 1
- UFTFJSFQGQCHQW-UHFFFAOYSA-N triformin Chemical compound O=COCC(OC=O)COC=O UFTFJSFQGQCHQW-UHFFFAOYSA-N 0.000 description 1
- 229940099259 vaseline Drugs 0.000 description 1
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Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/02—Cosmetics or similar toiletry preparations characterised by special physical form
- A61K8/04—Dispersions; Emulsions
- A61K8/06—Emulsions
- A61K8/062—Oil-in-water emulsions
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/02—Cosmetics or similar toiletry preparations characterised by special physical form
- A61K8/04—Dispersions; Emulsions
- A61K8/06—Emulsions
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
- A61K8/72—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds
- A61K8/73—Polysaccharides
- A61K8/731—Cellulose; Quaternized cellulose derivatives
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
- A61Q19/00—Preparations for care of the skin
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
- A61Q5/00—Preparations for care of the hair
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
- C08B11/00—Preparation of cellulose ethers
- C08B11/02—Alkyl or cycloalkyl ethers
- C08B11/04—Alkyl or cycloalkyl ethers with substituted hydrocarbon radicals
- C08B11/14—Alkyl or cycloalkyl ethers with substituted hydrocarbon radicals with nitrogen-containing groups
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
- C08B15/00—Preparation of other cellulose derivatives or modified cellulose, e.g. complexes
- C08B15/05—Derivatives containing elements other than carbon, hydrogen, oxygen, halogens or sulfur
- C08B15/06—Derivatives containing elements other than carbon, hydrogen, oxygen, halogens or sulfur containing nitrogen, e.g. carbamates
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L1/00—Compositions of cellulose, modified cellulose or cellulose derivatives
- C08L1/08—Cellulose derivatives
- C08L1/26—Cellulose ethers
- C08L1/28—Alkyl ethers
- C08L1/288—Alkyl ethers substituted with nitrogen-containing radicals
Definitions
- the present application relates to a process for preparing dermo-cosmetic compositions in the form of emulsions using cationized cellulose fibers as an emulsifier, as well as emulsions prepared from this process.
- microfibrillated celluloses (Microfibrillated Cellulose, MFC) are obtained in the form of an aqueous suspension by enzymatic pretreatment and mechanical treatment.
- MFC microfibrillated Cellulose
- FIG. 1 represents an embodiment of a process for obtaining a dermocosmetic composition in the form of an emulsion by using fibrillated cellulose fibers during the process as an emulsifier;
- Figure 2 shows the stability comparison of two emulsions prepared from non-cationized or cationized cellulose microfibers used as an emulsifier;
- FIG. 3 represents the creaming index of emulsions as a function of the concentration of cationized cellulose fibers, the emulsion having been prepared according to the process of FIG.
- FIG. 1 illustrates an embodiment of a process for obtaining a stable suspension of fibrillated cationic fibers during and up to obtaining a dermo-cosmetic composition in the form of an emulsifying suspension or a stable emulsion. . In this case, we will talk about in situ fibrillation.
- In situ fibrillation means the fibrillation of cationic fibers at the same time as obtaining a dermo-cosmetic composition, that is to say the passage by homogenization of a fiber mixture in water with oil to an emulsifying suspension based on water, oil and fibrillated fibers (otherwise known as microfibers).
- emulsion an intimate mixture of two liquid substances. These are always two liquids that in normal situation are immiscible but go through specific operations manage to have a macroscopically homogeneous, but microscopically heterogeneous. This mixture remains stable thanks to a third ingredient called emulsifier or emulsifier.
- emulsifier we mean a chemical or natural product used to increase the creaminess of certain products, to stabilize an emulsion.
- cellulosic fibers are the starting point. These cellulosic fibers may advantageously come from little or no exploited portions of vegetable crops. The use of cellulosic fibers of fresh or dried plants is also possible.
- This "plant” group is made up of two lines, algae and plants. By plant, we mean everything or part of plant, said plant being dry or fresh, frozen or thawed and whole, fragmented or ground. By “plant part” is meant aerial parts such as stems, branches, leaves, seeds and / or flowers and / or underground parts such as rhizomes, roots and / or bulbs.
- oats especially from aerial parts or bark from oat seeds, flax, straw, sugarcane, or even leek or wood.
- oats are preferred for the present invention.
- a step 1 cellulosic fibers in an aqueous medium are subjected to cationization until a degree of cationic substitution greater than 0.15 is obtained.
- the degree of substitution is defined for a cellulosic fiber as being the ratio between the number of modified OH groups and the total number of OH groups per anhydroglucose unit, the cationization step is well known to those skilled in the art. This step is carried out in an exclusively aqueous medium.
- a homogenization step is carried out directly, preferably by colloid milling, in the presence of at least one fatty substance, this fatty substance being preferably an oil.
- this fatty substance being preferably an oil.
- Those skilled in the art are perfectly familiar with the conditions of use of such homogenization methods. It is then obtained directly (in-situ) an emulsion or suspension emulsifier particularly homogeneous and stable over time.
- an emulsion requires a supply of energy, a setting in motion of the fluids.
- Different mixer systems can be used for this invention to form emulsions.
- the mixture is preferably made in a mixer with stirrer, consisting of a tank inside which is the stirrer which can be in various forms, magnetic bar, turbine, rotor-stator device (ultra Turrax) etc. .
- These stirrers may have higher or lower speeds of rotation, ranging from a few hundred to several thousand rotations per minute.
- Another type of mixer can be used, the static mixers particularly suitable when the products are viscous.
- emulsification can also be done by membrane.
- an Ultra Turrax type mixer was chosen with the following conditions: at least 1 min, with a rotation speed greater than 12 000 rpm, with a volume of 100 ml and a sufficient shear greater than 10 s -1 .
- homogeneous emulsion in the sense of the present invention an emulsion having a cremation index equal to zero.
- the creaming index is defined by placing the composition in a container and measuring the ratio between the height of the non-emulsified portion and the height of the emulsified portion.
- a zero value of the creaming index corresponds to a perfectly homogeneous and stable composition.
- stability is meant good homogeneity of dispersion of the internal phase, in the form of microdroplets, in the external phase.
- a stable composition is in particular a composition which undergoes no phenomenon of release, phase shift, precipitation, coalescence, flocculation, creaming, etc.
- the composition according to the invention is advantageously such that the equilibrium of the phases which compose it is maintained, that is to say that the dispersion of the internal phase in the external phase remains homogeneous.
- composition according to the invention may also advantageously be preserved for a long time, despite the absence of preservative.
- oil means a "fatty substance” which is liquid at ambient temperature (25 ° C.) and at atmospheric pressure (760 mmHg).
- fatty substance is meant an organic compound which is insoluble in water at ordinary temperature (25 ° C.) and at atmospheric pressure (760 mmHg), solubility of less than 5%, preferably of 1%, even more preferably of 0%. , 1%.
- the Fatty substances are generally soluble in organic solvents under the same conditions of temperature and pressure, such as, for example, chloroform, dichloromethane, ethanol, benzene, toluene or liquid petrolatum.
- oils are chosen from non-silicone oils, oils of animal origin, triglyceride oils of vegetable origin, glycerides or fluorinated oils of synthetic origin, fatty alcohols, fatty acid esters and / or or fatty alcohol different from triglycerides, and silicone oils.
- non-silicone oils include alkanes C6 _ IC6, linear, branched, optionally cyclic.
- alkanes C6 _ IC6 linear, branched, optionally cyclic.
- hexane dodecane and isoparaffins, such as isohexadecane and isodecane.
- the linear or branched hydrocarbons having more than 16 carbon atoms may be chosen from paraffin oils, petroleum jelly, vaseline oil, polydecenes and hydrogenated polyisobutene.
- liquid triglycerides of fatty acids containing from 6 to 30 carbon atoms for instance triglycerides of heptanoic or octanoic acids or else, for example, sunflower, corn, soya, squash, grape seed, sesame, hazelnut, apricot, macadamia, arara, castor, avocado, caprylic / capric acid triglycerides, jojoba oil, shea butter oil.
- fluorinated oils that may be mentioned are perfluoromethylcyclopentane and perfluoro-1,3-dimethylcyclohexane, perfluoro-1,2-dimethylcyclobutane, perfluoroalkanes such as dodecalfluoropentane and tetrafluorfluorohexane, bromoperfluorooctyl, nonafluoro- methoxybutane, nonafluoroethoxyisobutane, perfluoromorpholine, such as 4-trifluoromethyl perfluoromorpholine.
- the oil is chosen from oils of natural origin, more particularly oils of vegetable origin, preferably jojoba, safflower, babassu, sunflower and olive oils.
- oils of natural origin preferably jojoba, safflower, babassu, sunflower and olive oils.
- coconut Brazil nuts, marula, corn, argan, soya, squash, grape seed, flax, sesame, hazelnut, apricot, macadamia, arara , coriander, castor oil, avocado, shea butter oil and rapeseed oil.
- the fatty substance may be different from oils, mention may be made of butters, waxes or resins.
- the fatty substance concentration referred to as the fatty phase of the composition according to the invention, represents between 5 and 70% by weight relative to the total weight of the composition, preferably between 5 and 40% and more preferably between 10 and 30 %.
- the concentration of fat represents 10% by weight relative to the total weight of the composition.
- the fatty phase represents 30% by weight relative to the total weight of the composition.
- the fatty phase represents 30% by weight relative to the total weight of the composition.
- FIG. 2 is a comparative representation of the creaming index of two emulsions as a function of the concentration of cellulose microfibers.
- the two emulsions are prepared respectively with non-cationized and cationized cellulose microfibers.
- the process used in this example is not the one previously described in FIG. 1.
- the homogenization is carried out without addition of fatty substances in order to obtain a suspension of cationized microfibers. It is during a third step that this suspension is mixed with at least one fatty substance to obtain an emulsion.
- This emulsion contains 30% of oil and 70% of aqueous suspension of cationized microfibers.
- the creaming index was measured at 40 days, at room temperature, after the formation of the emulsions.
- FIG. 3 represents the creaming index of emulsions as a function of the concentration of cationized cellulose fibers.
- the method used to obtain the emulsions is that described in FIG. 1 of in situ fibrillation when obtaining the emulsifying suspension.
- the emulsion contains 20% oil and 80% aqueous solution.
- the creaming index was measured 60 days after the formation of the emulsions at room temperature.
- This embodiment of emulsions is particularly interesting at the industrial level, since it avoids any step of mixture usually present in this kind of process.
- This embodiment therefore has the advantage of being particularly fast.
- a grinding of 2 hours must be followed by a mixture in the presence of fat also 2 hours.
- grinding in the presence of fatty substances for only 2 hours is sufficient, greatly limiting the energy required for the manufacture of the suspension.
- Another specificity of this method of manufacture is that the concentration of cellulose microfibers in the emulsion can be relatively high. Indeed, it can reach levels of up to 15%.
- compositions in emulsion form can be obtained using only cationized microfibers derived from aerial parts or oat bran as emulsifier.
- Their emulsifying properties are very interesting and their cosmetic qualities (especially softness) have been proven.
- These compositions also have film-forming and antibacterial properties that are particularly interesting in the field of dermo-cosmetics.
- the homogeneity and / or the stability of the emulsion can sometimes be further improved by the addition of another emulsifying agent.
- emulsifiers examples include anionic surfactants such as stearates such as sodium stearate, sodium cetostearyl sulfate and potassium cetyl phosphate; nonionic surfactants, such as polyoxyethylenated or unsaturated sorbitan esters, macrogol esters, sucroesters, ethers, poloxamers, silicone derivatives, phospholipids.
- anionic surfactants such as stearates such as sodium stearate, sodium cetostearyl sulfate and potassium cetyl phosphate
- nonionic surfactants such as polyoxyethylenated or unsaturated sorbitan esters, macrogol esters, sucroesters, ethers, poloxamers, silicone derivatives, phospholipids.
- surfactant means a compound which modifies the surface tension between two surfaces.
- the cationized cellulose microfibers are sufficient to obtain a homogeneous and stable emulsion, there is no addition of another emulsifying agent.
- the concentration of cationic cellulose fibers with a degree of cationic substitution of at least 0.15 is greater than 1.4% by weight of dry matter relative to the total weight of the composition.
- this concentration is greater than 1.0% and more preferably greater than 0.8% relative to the total weight of the composition.
- cationic microfibers in particular with a diameter greater than 100 nm and with a length greater than 1 p, from aerial parts and oat bran after bleaching and pretreatment;
- composition according to the invention may be prepared in the form of a single emulsion oil in water or water in oil, a multiple emulsion such as, for example, a water-in-oil emulsion in water or an oil-in-oil emulsion.
- composition according to the invention is intended for cutaneous application.
- the dermatological or cosmetic composition according to the invention may furthermore comprise one or more usual dermatological or cosmetically compatible excipients.
- the dermatologically or cosmetically compatible excipients may be any excipient among those known to those skilled in the art in order to obtain a composition for topical application in the form of a milk, a cream, a balm, a lotion, a gel, a foaming gel, an oil, an emulsion, a microemulsion, an ointment, a spray.
- the composition according to the invention may further contain additives and formulation aids, such as thickeners, gelling agents, water binders, leveling agents, stabilizers, colorants, fragrances, and preservatives. .
- composition may be added various active substances selected from the group consisting of perfumes, moisturizers, anti-wrinkle products, etc. These active substances may be included in the added fat to form the emulsion.
- one embodiment provides a dermo-cosmetic composition in the form of an emulsion comprising, as emulsifier, cationized cellulose microfibers with a degree of cationic substitution greater than 0.15, the concentration of these microfibers being greater than 0.8%. by weight of dry matter relative to the total weight of the composition.
- cellulose microfibers are derived from oats, and are referred to as oat microfibers.
- the emulsion thus formed is a simple oil-in-water emulsion.
- the fatty phase of the emulsion represents 10 to 30% by weight relative to the total weight of the composition.
- composition according to the invention does not contain any other emulsifying agent.
- a dermocosmetic composition in the form of an emulsion comprising, as emulsifier, cationized cellulose microfibers having a degree of cationic substitution greater than 0.15, the concentration of these cationized microfibers being greater than at 0.8% by weight of dry matter relative to the total weight of the composition, corresponding to one or more of the above characteristics, for the cosmetic treatment by topical application to the skin, the mucous membranes and / or the hair.
- composition according to the invention can be applied to the skin, the mucous membranes and / or the hair topically.
- a method of cosmetic treatment of the skin, mucous membranes and / or hair comprises topically applying, on the skin, the mucous membranes and or the hair, a composition according to the invention.
- the present invention also relates to the use of a composition according to the invention for the curative and / or preventive treatment of diseases of the skin, mucous membranes and / or hair.
- Another embodiment of the invention relates to a process for the preparation of a dermo-cosmetic composition in emulsion form, comprising the following steps:
- the concentration of the cellulose microfibers cationized being greater than 0.8% by weight of dry matter relative to the total weight of the composition.
- this process is carried out with oat fibers.
- the homogenization step is by colloid milling.
- the fatty substance used is an oil.
- a final embodiment of the invention provides for the use of cationized cellulose microfibers having a cationic degree of substitution greater than 0.15 as an emulsifier.
- cationized oat microfibers having a cationic degree of substitution greater than 0.15 as an emulsifier is preferred.
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- General Health & Medical Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- Veterinary Medicine (AREA)
- Public Health (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Medicinal Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Birds (AREA)
- Epidemiology (AREA)
- Materials Engineering (AREA)
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- Cosmetics (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1653400A FR3050109B1 (fr) | 2016-04-18 | 2016-04-18 | Procede de formation d'une emulsion |
| PCT/FR2017/050882 WO2017182738A1 (fr) | 2016-04-18 | 2017-04-12 | Procédé de formation d'une émulsion |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP3445326A1 true EP3445326A1 (fr) | 2019-02-27 |
Family
ID=56148496
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP17721779.1A Withdrawn EP3445326A1 (fr) | 2016-04-18 | 2017-04-12 | Procédé de formation d'une émulsion |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20190133898A1 (fr) |
| EP (1) | EP3445326A1 (fr) |
| JP (1) | JP2019513813A (fr) |
| FR (1) | FR3050109B1 (fr) |
| WO (1) | WO2017182738A1 (fr) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2759376B1 (fr) * | 1997-02-12 | 1999-04-16 | Ard Sa | Procede pour obtenir des microfibrilles de cellulose cationiques ou leurs derives solubles, ainsi que celluloses obtenues par ce procede |
| AU2001233260A1 (en) * | 2000-03-09 | 2001-09-17 | Hercules Incorporated | Stabilized microfibrillar cellulose |
-
2016
- 2016-04-18 FR FR1653400A patent/FR3050109B1/fr active Active
-
2017
- 2017-04-12 EP EP17721779.1A patent/EP3445326A1/fr not_active Withdrawn
- 2017-04-12 JP JP2018555574A patent/JP2019513813A/ja active Pending
- 2017-04-12 WO PCT/FR2017/050882 patent/WO2017182738A1/fr not_active Ceased
- 2017-04-12 US US16/094,787 patent/US20190133898A1/en not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| WO2017182738A1 (fr) | 2017-10-26 |
| FR3050109B1 (fr) | 2019-08-16 |
| FR3050109A1 (fr) | 2017-10-20 |
| US20190133898A1 (en) | 2019-05-09 |
| JP2019513813A (ja) | 2019-05-30 |
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