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
• • 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
  • A61K8/19—Cosmetics or similar toiletry preparations characterised by the composition containing inorganic ingredients
  • A61K8/25—Silicon; Compounds thereof
• • 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
  • A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
  • A61K8/31—Hydrocarbons
• • 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
  • A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
  • A61K8/33—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing oxygen
  • A61K8/37—Esters of carboxylic acids
• • 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
  • A61K8/84—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds obtained by reactions otherwise than those involving only carbon-carbon unsaturated bonds
  • A61K8/89—Polysiloxanes
  • A61K8/891—Polysiloxanes saturated, e.g. dimethicone, phenyl trimethicone, C24-C28 methicone or stearyl dimethicone
• • 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
  • A61K8/84—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds obtained by reactions otherwise than those involving only carbon-carbon unsaturated bonds
  • A61K8/89—Polysiloxanes
  • A61K8/891—Polysiloxanes saturated, e.g. dimethicone, phenyl trimethicone, C24-C28 methicone or stearyl dimethicone
  • A61K8/894—Polysiloxanes saturated, e.g. dimethicone, phenyl trimethicone, C24-C28 methicone or stearyl dimethicone modified by a polyoxyalkylene group, e.g. cetyl dimethicone copolyol
• • 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

Definitions

• the present invention relates to a water-in-oil type emulsified cosmetic. More specifically, the present invention relates to a water-in-oil type emulsified cosmetic which can give a fresh feeling such that water overflows during application while having a rich feeling.
• a water-in-oil emulsion composition in which an oil phase is a continuous phase (outer phase) and an aqueous phase is a dispersed phase (inner phase) is an oil-soluble active ingredient such as an emollient, an oil-soluble drug, and an ultraviolet absorber. Since it can be spread on the skin, it is a dosage form suitable for external preparations for the skin. In the cosmetics field, it is widely used as a skin care cream or milky lotion, or a hair care cream.
• water-in-oil type emulsified cosmetics contain a solid oil such as a wax or a semi-solid oil for the purpose of giving a rich feeling at the time of application to the skin and imparting flexibility to the skin.
• a solid oil such as a wax or a semi-solid oil
• richness can be obtained by blending solid oil and the like, it has been extremely difficult to satisfy a fresh feeling at the same time.
• Patent Document 1 a microgel composed of (a) a synthetic polyelectrolyte (acrylamide-based copolymer) produced by reverse-phase microemulsion polymerization of a water-soluble ethylenically unsaturated monomer is used as a thickener, and at the same time, (b) hydrogenated castor oil It is said that an external preparation for skin containing an ester of a fatty acid and a higher fatty acid has a feeling of use having both freshness and richness. However, the freshness in Patent Document 1 is considered to be simply due to the water contained in the hydrophilic thickener microgel, and does not give a feeling that water overflows at the time of application.
• Patent Document 2 discloses a high-performance emulsifier comprising glucomannan, a polyether-modified silicone having a specific structure, and 50.0% by weight or more of water.
• An internal aqueous phase emulsified cosmetic is disclosed.
• Patent Document 3 discloses an emulsified cosmetic in which the same polyether-modified silicone as in Patent Document 2, silicone oil and / or non-polar oil, and water are blended.
• the high internal aqueous phase emulsified cosmetic described in Patent Literature 2 is a water-in-oil type emulsion, but when applied to the skin, gives an instantaneous phase change and gives a feeling that water overflows.
• the emulsified cosmetic described in Patent Document 3 is characterized in that it is lightly spreadable and moist and has no stickiness.
• these cosmetics lack the richness, and if solid oil is added to give the richness, the original freshness is lost.
• polyether-modified silicone is used as the only emulsifier, the emulsion stability tends to decrease when the oil content is increased.
• the present invention has been made in view of the above-mentioned disadvantages of the prior art, and has a rich feeling, while having a fresh feeling of use such as water inversion and overflow of water, and excellent in emulsion stability. It is intended to provide a water-type emulsified cosmetic.
• the present inventors have conducted intensive studies and found that in a high internal aqueous phase water-in-oil emulsion cosmetic containing a large amount of aqueous phase, a polyether-modified silicone having a specific structure, an organic-modified clay mineral, and a specific silicone interface
• a non-polar or low-polar hydrocarbon oil and silicone oil as an oil agent
• A represents a methyl group, a phenyl group and a general formula: —C 3 H 6 O (C 2 H 4 O) a (C 3 H 6 O) b R ′ (where R ′ is a hydrogen atom , An acyl group, and an alkyl group having 1 to 4 carbon atoms, a is an integer of 5 to 50, and b is an integer of 5 to 50)
• m is an integer of 50 to 1000, n is an integer of 1 to 40;
• a water-in-oil type emulsified cosmetic relates to a water-in-oil blended with at least one crosslinked polyether-modified silicone represented by the following formula (2) instead of or in addition to (A) the high-molecular-weight polyether-modified silicone described above. Including emulsified cosmetics.
• the water-in-oil type emulsified cosmetic of the present invention gives a rich feeling at the time of application to the skin, and has not only a freshness such that water overflows, but also an excellent emulsification stability, a non-stickiness, and a spreadability. Good and refreshing use feeling can be imparted.
• solid oil such as wax which has been used for imparting richness in conventional cosmetics, it can be manufactured by a simple method that does not include a heating step.
• rich feeling in the present specification means that after the preparation is adapted to the skin, the preparation has a feeling of remaining after covering the skin.
• the water-in-oil emulsified cosmetic of the present invention (hereinafter also simply referred to as “emulsified cosmetic”) is selected from (A) a high molecular weight polyether-modified silicone having a specific structure and a cross-linked polyether-modified silicone having a specific structure. It contains at least one polyether-modified silicone, (B) a silicone surfactant having an HLB of 2 to 5, (C) an organic-modified clay mineral, (D) an aqueous phase, and (E) an oil agent.
• emulsified cosmetic is selected from (A) a high molecular weight polyether-modified silicone having a specific structure and a cross-linked polyether-modified silicone having a specific structure. It contains at least one polyether-modified silicone, (B) a silicone surfactant having an HLB of 2 to 5, (C) an organic-modified clay mineral, (D) an aqueous phase, and (E) an oil agent.
• polyether-modified silicone blended in the emulsified cosmetic of the present invention is at least one selected from high molecular weight polyether-modified silicones represented by the following formula (1), and / or It is at least one selected from the cross-linked polyether-modified silicones represented by the following formula (2) (also referred to herein as “polyether-modified silicone having a specific structure” or “A component”).
• A represents a methyl group, a phenyl group and a general formula: —C 3 H 6 O (C 2 H 4 O) a (C 3 H 6 O) b R ′ (where R ′ is a hydrogen atom , An acyl group, and an alkyl group having 1 to 4 carbon atoms, a is an integer of 5 to 50, and b is an integer of 5 to 50)
• the molecule contains 40% by mass or more of a polyoxyalkylene group, and has a molecular weight of 30,000 or more.
• acyl group of R ′ in the formula (1) examples include a formyl group, an acetyl group, a propionyl group, a butyroyl group, an acryloyl group, a benzoyl group, a toluoyl group, Examples thereof include an alkyl group having 1 to 4 carbon atoms, and specific examples of the alkyl group include a methyl group, an ethyl group, an isopropyl group, an n-propyl group, a t-butyl group, and an n-butyl group.
• the polyether-modified silicone does not show a sufficient thickening effect, and when a or b exceeds 50, The resulting emulsified cosmetic has a sticky feeling.
• the content of the polyoxyalkylene group in one molecule is preferably 40% by mass or more, and particularly preferably in the range of 40 to 70% by mass.
• the emulsifying ability for non-polar oils other than silicone oil decreases, and when it exceeds 70% by mass, the obtained emulsified cosmetic becomes sticky. There are cases.
• m is less than 50 and n is less than 1
• the thickening effect becomes insufficient
• m exceeds 1000 and n exceeds 40 The emulsified cosmetic thus obtained has a sticky feel.
• the high molecular weight polyether-modified silicone (formula (1)) used in the present invention has a molecular weight of 30,000 or more, preferably 50,000 or more. This is because when the molecular weight of the polyether-modified silicone is less than 30,000, the emulsifying ability for non-polar oil components other than silicone oil is reduced.
• a particularly preferable specific example of the high molecular weight polyether-modified silicone corresponding to the above formula (1) is PEG / PPG-19 / 19, that is, a structure in which a methyl group of dimethicone is partially substituted with a polyoxyalkylene group. And compounds having an average degree of polymerization of 19 for each of the oxyethylene group and the oxypropylene group.
• the crosslinked polyether-modified silicone represented by the formula (2) is a crosslinked polymer obtained by crosslinking methylhydrogenpolysiloxane with diallyl polyether at both ends.
• 10 to 1000 parts by weight, preferably 20 to 500 parts by weight, of a low-viscosity silicone oil having a viscosity of 100 mPa ⁇ s or less at 25 ° C. is kneaded with 100 parts by weight of the crosslinked polymer under a shearing force. It is preferable to process and mix as a paste-like composition.
• the low-viscosity silicone oil used when preparing the paste-like composition may be linear or branched.
• methylpolysiloxane diimethicone
• methylphenylpolysiloxane diphenyldimethicone
• ethyl examples include polysiloxane, ethylmethylpolysiloxane, ethylphenylpolysiloxane, and cyclic dimethylpolysiloxane such as octamethylcyclotetrasiloxane and decamethylcyclopentasiloxane, and these may be used alone or as a mixture of two or more. .
• the emulsified cosmetic of the present invention comprises one or both of a high molecular weight polyether-modified silicone represented by the above formula (1) and a crosslinked polyether-modified silicone represented by the above formula (2) (that is, (Polyether-modified silicone having a specific structure) may be contained alone or in combination of two or more. In particular, it is preferable to contain at least one high molecular weight polyether-modified silicone represented by the formula (1).
• the blending amount of the polyether-modified silicone having a specific structure is preferably 0.3% by mass or more as a real matter. If the amount is less than 0.3% by mass, the emulsion stability may decrease.
• the preferred range of the compounding amount is 0.4 to 1.8% by mass, and particularly preferably 0.5 to 1.5% by mass.
• the component B in the emulsified cosmetic of the present invention is a silicone surfactant and has an HLB value in the range of 2 to 5.
• the “silicone surfactant” in the present invention is a nonionic surfactant having a silicone structure (hydrophobic portion) and a hydrophilic portion in a molecule.
• Copolymer alkyl chain branched polyoxyethylene methyl polysiloxane copolymer, alkyl chain / silicone chain branched polyoxyethylene methyl polysiloxane copolymer, crosslinked polyoxyethylene methyl polysiloxane, alkyl group-containing crosslinked polyoxyethylene Methyl polysiloxane, branched polyglycerin-modified silicone, crosslinked polyglycerin-modified silicone, alkyl group-containing crosslinked polyglycerin-modified silicone, alkyl group-branched polyglycerin-modified silicone, and the like. But it is not limited to.
• PEG-9 polydimethylsiloxyethyl dimethicone lauryl PEG-9 polydimethylsiloxyethyl dimethicone, cetyl PEG / PPG-10 / 1 dimethicone, PEG-9 methyl ether dimethicone, PEG-10 dimethicone, PEG- Examples include, but are not limited to, 3 dimethicone.
• the amount of the silicone surfactant (component B) in the emulsified cosmetic of the present invention is preferably 0.3% by mass or more. If the amount is less than 0.3% by mass, the emulsion stability may decrease.
• the preferred range of the compounding amount is 0.4 to 1.8% by mass, and particularly preferably 0.5 to 1.5% by mass.
• the organically modified clay mineral (component C) used in the emulsified cosmetic of the present invention is a kind of colloidal hydrous aluminum silicate having a three-layer structure, and is generally represented by the following general formula (3).
• the clay mineral is modified with a quaternary ammonium salt type cationic surfactant.
• X Al, Fe (III), Mn (III) or Cr (III)
• Y Mg, Fe (II), Ni, Zn or Li
• Z K, Na or Ca)
• montmorillonite groups in this case, those in which the (OH) group in the formula is replaced with fluorine
• montmorillonite, saponite and hectorite commercially available products include veegum, kunipia, laponite and the like.
• clay minerals such as sodium silicic mica and synthetic mica known in the name of sodium or lithium teniolite (commercially available products include dimonite: Topy Industries, Ltd.) and other quaternary ammonium salt-type cationic surfactants To obtain.
• the quaternary ammonium salt type cationic surfactant used here is represented by the following general formula (3).
• R 1 is an alkyl group or benzyl group having 10 to 22 carbon atoms
• R 2 is a methyl group or an alkyl group having 10 to 22 carbon atoms
• R 3 and R 4 are an alkyl group or hydroxy group having 1 to 3 carbon atoms
• An alkyl group, X represents a halogen atom or a methyl sulfate residue.
• Such quaternary ammonium salt type cationic surfactants include, for example, dodecyltrimethylammonium chloride, myristyltrimethylammonium chloride, cetyltrimethylammonium chloride, stearyltrimethylammonium chloride, aralkyltrimethylammonium chloride, behenyltrimethylammonium chloride, myristyldimethylethylammonium Chloride, cetyldimethylethylammonium chloride, stearyldimethylethylammonium chloride, aralkyldimethylethylammonium chloride, behenyldimethylethylammonium chloride, myristyldiethylmethylammonium chloride, cetyldiethylmethylammonium chloride, stearyldiethylmethylammonium chloride, ara Diethylmethylammonium chloride, behenyldiethylmethylammonium chloride
• organically modified clay mineral examples include dimethylalkylammonium hectorite, benzyldimethylstearylammonium hectorite, distearyldimethylammonium chloride-treated aluminum magnesium silicate, and the like.
• Benton 27 a hectorite treated with benzyldimethyl stearyl ammonium chloride: manufactured by National Red
• Benton 38 a hectorite modified with dimethyl distearyl ammonium: manufactured by National Red
• the compounding amount of the organically modified clay mineral (component C) in the emulsified cosmetic of the present invention is preferably larger than 0.5% by mass and smaller than 2.5% by mass. When the amount is 0.5% by mass or less or 2.5% by mass or more, the emulsion stability tends to decrease.
• the preferred compounding amount range is 0.8 to 2.2% by mass, and particularly preferably 1.0 to 2.0% by mass.
• the aqueous phase (D component) in the emulsified cosmetic of the present invention contains water and a water-soluble component.
• the water may be one commonly used in cosmetics, such as ion-exchanged water, purified water, natural water, and the like.
• the water-soluble component is a substance miscible with water, and typically includes lower alcohols and polyhydric alcohols.
• Lower alcohol means an alcohol having 5 or less carbon atoms, and examples thereof include methanol, ethanol, propanol, isopropanol, butanol, isobutanol, and t-butanol.
• polyhydric alcohol examples include dihydric alcohols (eg, ethylene glycol, propylene glycol, trimethylene glycol, 1,2-butylene glycol, 1,3-butylene glycol, tetramethylene glycol, 2,3-butylene glycol, Pentamethylene glycol, 2-butene-1,4-diol, hexylene glycol, octylene glycol, etc.); trihydric alcohols (eg, glycerin, trimethylolpropane, etc.); tetrahydric alcohols (eg, 1,2,6) Pentahydric alcohols (eg, xylitol (also belonging to sugar alcohols), etc.); hexavalent alcohols (eg, sorbitol, mannitol (all also belong to sugar alcohols, etc.)); Polyhydric alcohol polymer (Eg, diethylene glycol, dipropylene glycol, triethylene glycol, polypropylene glycol, tetraethylene glycol, dig
• water-soluble components include various salts and various water-soluble drugs (eg, humectants, preservatives, thickeners, etc.) and are not particularly limited.
• the compounding amount is in a range that does not impair the effects of the present invention.
• the emulsified cosmetic of the present invention is stable without blending glucomannan (one of water-soluble thickeners) essential in Patent Document 2 described above, and the phase is inverted to overflow water. Since such a feeling of use (a feeling of inversion) is obtained, the present invention also includes an embodiment in which glucomannan is not blended.
• the blending amount of the aqueous phase (D component) in the emulsified cosmetic of the present invention needs to be 72 to 83% by mass. If the amount of the aqueous phase is out of the above range, a feeling of phase inversion cannot be obtained or emulsification cannot be performed stably.
• the amount of the aqueous phase is preferably 72.5 to 82% by mass, more preferably 73 to 81% by mass. It is preferable that at least 80% by mass, preferably at least 90% by mass, more preferably at least 95% by mass of the water phase (D component) is occupied by water, polyhydric alcohol and humectant.
• the oil agent (E component) in the present invention contains (e1) at least one kind of hydrocarbon oil selected from non-polar hydrocarbon oil and low-polarity hydrocarbon oil, and (e2) at least one kind of silicone oil.
• the component (e1) in the present invention is a hydrocarbon oil which is liquid at normal temperature (25 ° C.) It may be what is known as a non-polar oil or a low-polar oil.
• a hydrocarbon oil which is liquid at normal temperature (25 ° C.) It may be what is known as a non-polar oil or a low-polar oil.
• hydrogenated polydecene, mineral oil, liquid paraffin, isoparaffin, isohexadecane, isododecane, squalane, squalene, hydrogenated polyisobutene, and the like are known as non-polar or low-polarity liquid oils.
• non-polar hydrocarbon oils at least one type of hydrocarbon oil (component e1) selected from non-polar hydrocarbon oils and low-polarity hydrocarbon oils.
• component e1 selected from non-polar hydrocarbon oils and low-polarity hydrocarbon oils
• Silicone oil (e2 component) is a silicone oil that is liquid at normal temperature, and is, for example, a chain silicone such as dimethylpolysiloxane (dimethicone), methylphenylpolysiloxane (diphenyldimethicone), and methylhydrogenpolysiloxane. Oils, cyclic silicone oils such as octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, dodecamethylcyclohexasiloxane and the like can be mentioned.
• the ratio of the blending amount of the (e1) hydrocarbon oil to the total blending amount of the (e1) nonpolar hydrocarbon oil and the (e2) silicone oil [(e1) / ⁇ (e1) + (E2) ⁇ ] is preferably adjusted in the range of 0.3 to 0.65, more preferably in the range of 0.32 to 0.64, and more preferably in the range of 0.34 to 0.62. Is particularly preferred.
• the ratio [(e1) / ⁇ (e1) + (e2) ⁇ ] can take any numerical value (range) within a range of 0.3 to 0.65. Is most preferable.
• oil agent (E component) in the present invention in addition to the essential components (e1) non-polar hydrocarbon oil and (e2) silicone oil, oils and fats, waxes, higher fatty acids, higher alcohols, and highly polar hydrocarbon oils (IOB) Any oil component selected from liquid hydrocarbon oils having a value exceeding 0.15) and the like can be blended as long as the effects of the present invention are not impaired.
• the compounding amount of the oil agent (component E) in the emulsified cosmetic of the present invention is usually 10 to 30% by mass, preferably 12 to 28% by mass, more preferably 15 to 24% by mass. Further, the total amount of (e1) the nonpolar hydrocarbon and (e2) the silicone oil preferably accounts for 80% by mass or more, more preferably 90% by mass or more, based on the total mass of the oil agent (E component). More preferably 95% by mass or more, and the oil agent (component (E)) may be composed of only (e1) a non-polar hydrocarbon and (e2) a silicone oil.
• emulsified cosmetic of the present invention other optional components usually used in cosmetics, such as, but not limited to, a sequestering agent, a powder component, a pH adjuster, and an ultraviolet ray, as long as the effects of the present invention are not impaired.
• a sequestering agent such as, but not limited to, a powder component, a pH adjuster, and an ultraviolet ray
• An absorbent, a skin nutrient, a vitamin, an antioxidant, an antioxidant aid, a fragrance and the like can be appropriately compounded as required.
• the emulsified cosmetic of the present invention can be produced using a conventional method of a water-in-oil emulsified cosmetic, and the emulsifying method is not particularly limited.
• the emulsifying method is not particularly limited.
• the heating step is not required, so that the step can be simplified.
• the emulsified cosmetic according to the present invention can be widely applied to various forms of cosmetics, for example, in the form of emulsions, creams, makeup bases, emulsified foundations and the like having a fresh feeling of use. Are suitable.
• Examples Water-in-oil type emulsified cosmetics (samples) were prepared according to the formulations shown in Tables 1 to 5 below, and each sample was evaluated. Evaluation items, evaluation methods, and evaluation criteria are as follows. The evaluation results are also shown in Tables 1 to 5.
• Evaluation item (2) Emulsion stability Evaluation method: The hardness and appearance of the sample stored at 25 ° C. and 40 ° C. for one month were compared with those immediately after preparation to evaluate the stability. Evaluation criteria: A *: Under any of the storage conditions, the decrease in hardness was 10% or less, and no change in appearance was observed. A: No change in appearance was observed under any of the storage conditions, but a decrease in hardness of 10% or more was observed only in those stored at 40 ° C. B *: No change in appearance was observed under any of the storage conditions, but a decrease in hardness of 10% or more was observed. B: Separation of water or oil was slightly observed in appearance. C: Separation of water or oil was observed in appearance within one month.
• Evaluation item (3) Non-stickiness Evaluation method: Ten professional panelists applied the sample to the face and evaluated the usability at the time of application. Evaluation criteria: A *: 9 or more panelists answered that there was no stickiness. A: 7 to less than 9 out of 10 panelists answered that there was no stickiness. B: Five or more and less than seven out of ten panelists answered that there was no stickiness. C: Less than 5 out of 10 panelists answered that there was no stickiness.
• Evaluation item (6) Richness Evaluation method: Ten professional panels applied the sample to the face and evaluated the feeling of use during application. Evaluation criteria: A *: 9 or more of the 10 panelists answered that there was a sense of richness. A: 7 or more and less than 9 out of 10 panelists answered that there was a sense of richness. B: Five or more and less than seven out of ten panelists answered that there was a sense of richness. C: Less than 5 out of 10 panelists answered that there was a sense of richness.
• the high molecular weight polyether-modified silicone of the formula (1) was replaced with a crosslinked polyether-modified silicone having a structure not corresponding to the formula (2) ((dimethicone / ( PEG-10 / 15))
• a cross-polymer; trade name: KSG210; manufactured by Shin-Etsu Chemical Co., Ltd.) was used to prepare a sample, and the same evaluation as described above was performed.
• sample “6-1” using a polyether-modified silicone having a structure that did not correspond to formula (1) or formula (2) could not be emulsified stably.
• the feeling of transferring and overflowing water (a phase change feeling) which is a feature of the present invention.
• the present invention is a unique effect obtained by selecting a polyether-modified silicone having a specific structure represented by the formula (1) or (2) among the polyether-modified silicones.

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• 2019
  • 2019-07-19 JP JP2020531372A patent/JP7342001B2/ja active Active
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