US20180085299A1 - Dextrin fatty acid ester and cosmetic - Google Patents

Dextrin fatty acid ester and cosmetic Download PDF

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US20180085299A1
US20180085299A1 US15/566,080 US201615566080A US2018085299A1 US 20180085299 A1 US20180085299 A1 US 20180085299A1 US 201615566080 A US201615566080 A US 201615566080A US 2018085299 A1 US2018085299 A1 US 2018085299A1
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fatty acid
dextrin
saturated fatty
examples
oil
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Takanao Suzuki
Daisuke Kato
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Chiba Flour Milling Co Ltd
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    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07H—SUGARS; DERIVATIVES THEREOF; NUCLEOSIDES; NUCLEOTIDES; NUCLEIC ACIDS
    • C07H13/00—Compounds containing saccharide radicals esterified by carbonic acid or derivatives thereof, or by organic acids, e.g. phosphonic acids
    • C07H13/02—Compounds containing saccharide radicals esterified by carbonic acid or derivatives thereof, or by organic acids, e.g. phosphonic acids by carboxylic acids
    • C07H13/04—Compounds containing saccharide radicals esterified by carbonic acid or derivatives thereof, or by organic acids, e.g. phosphonic acids by carboxylic acids having the esterifying carboxyl radicals attached to acyclic carbon atoms
    • C07H13/06—Fatty 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
    • A61K8/73—Polysaccharides
    • 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
    • A61K8/72—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds
    • A61K8/73—Polysaccharides
    • A61K8/732—Starch; Amylose; Amylopectin; Derivatives thereof
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
    • A61Q1/00—Make-up preparations; Body powders; Preparations for removing make-up
    • A61Q1/02—Preparations containing skin colorants, e.g. pigments
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
    • A61Q1/00—Make-up preparations; Body powders; Preparations for removing make-up
    • A61Q1/02—Preparations containing skin colorants, e.g. pigments
    • A61Q1/04—Preparations containing skin colorants, e.g. pigments for lips
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
    • A61Q1/00—Make-up preparations; Body powders; Preparations for removing make-up
    • A61Q1/02—Preparations containing skin colorants, e.g. pigments
    • A61Q1/08—Preparations containing skin colorants, e.g. pigments for cheeks, e.g. rouge
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
    • A61Q1/00—Make-up preparations; Body powders; Preparations for removing make-up
    • A61Q1/02—Preparations containing skin colorants, e.g. pigments
    • A61Q1/10—Preparations containing skin colorants, e.g. pigments for eyes, e.g. eyeliner, mascara
    • 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
    • A61Q19/00—Preparations for care of the skin
    • A61Q19/10—Washing or bathing preparations
    • 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
    • C08B30/00—Preparation of starch, degraded or non-chemically modified starch, amylose, or amylopectin
    • C08B30/12—Degraded, destructured or non-chemically modified starch, e.g. mechanically, enzymatically or by irradiation; Bleaching of starch
    • C08B30/18—Dextrin, e.g. yellow canari, white dextrin, amylodextrin or maltodextrin; Methods of depolymerisation, e.g. by irradiation or mechanically

Definitions

  • Dextrin fatty acid esters have heretofore been used as gelling agents, which gel oils.
  • the oils gelled by the dextrin fatty acid esters are excellent in transparency, gloss, texture, etc. and are therefore used as materials for cosmetics.
  • thixotropy is one of the important performances.
  • the thixotropy is a performance by which a substance reduces its viscosity by the application of a given force and restores the viscosity without the force.
  • Cosmetics having high thixotropy exert effects, for example, good spreadability, because their viscosities are reduced upon application of the cosmetics. After the application of the cosmetics, the cosmetics resist flowing down and easily maintain the state of completion of application of the cosmetics, because the cosmetics restore their viscosities.
  • Patent Document 1 describes a dextrin fatty acid ester that imparts high thixotropy to a cosmetic and use of this dextrin fatty acid ester in a cosmetic.
  • Patent Document 1 Japanese Patent No. 3019191
  • the number of types of cosmetics comprising dextrin fatty acid esters keeps increasing. Along with this, new physical properties are required for the dextrin fatty acid esters. Specifically, high thixotropy may be imparted to cosmetics by the dextrin fatty acid esters. Even in such a case, cosmetics such as body oils or hair treatment gels can be poorly practical. That is, depending on a condition where the cosmetics are used, the cosmetics taken up on the palm or put on the skin excessively flow down if a long time is required for the cosmetics to restore their viscosities after application of the cosmetics.
  • syneresis properties properties of oozing oils
  • stability during preservation is reduced. Therefore, it is also desired that cosmetics also have low syneresis properties.
  • An objective of the present invention is to provide a dextrin fatty acid ester that offers a cosmetic having a restoring force and low syneresis properties, and a cosmetic containing the dextrin fatty acid ester.
  • a dextrin fatty acid ester in which the dextrin has an average degree of glycopolymerization of 3 or more and 100 or less.
  • the fatty acid includes one or more linear saturated fatty acids having 14 or more and 18 or less carbon atoms, and one or more branched saturated fatty acids having 14 or more and 18 or less carbon atoms.
  • the molar fraction of the linear saturated fatty acid in the fatty acid is 0.75 or more and 0.95 or less.
  • the average degree of substitution of the fatty acid per glucose unit is 1.5 or more and 2.0 or less.
  • a cosmetic in another aspect of the present invention, includes an oil and a dextrin fatty acid ester.
  • the dextrin has an average degree of glycopolymerization of 3 or more and 100 or less.
  • the fatty acid includes one or more linear saturated fatty acids having 14 or more and 18 or less carbon atoms and one or more branched saturated fatty acids having 14 or more and 18 or less carbon atoms.
  • the molar fraction of the linear saturated fatty acid in the fatty acid is 0.75 or more and 0.95 or less.
  • the average degree of substitution of the fatty acid per glucose unit is 1.5 or more and 2.0 or less.
  • a dextrin fatty acid ester comprising both of a linear saturated fatty acid and a branched saturated fatty acid wherein the numbers of carbon atoms thereof, the molar fractions of the linear saturated fatty acid and the branched saturated fatty acid, and the average degree of substitution fall within the ranges described above also has properties of imparting both of a restoring force and low syneresis properties to cosmetics.
  • the restoring force refers to a force that largely increases a viscosity such that the viscosity is 50% or more with respect to the viscosity immediately before cancelation of a force applied to an oil containing a dextrin fatty acid ester, in a time as short as 20 seconds or shorter after the cancelation.
  • the dextrin in the dextrin fatty acid ester has an average degree of glycopolymerization of 3 or more and 100 or less, whereby the incapability of obtaining a soft gel is prevented while excessive reduction in the solubility of the dextrin fatty acid ester in an oil is prevented.
  • the linear saturated fatty acid has 14 or more and 18 or less carbon atoms, whereby the restoring force imparted to cosmetics is enhanced.
  • the branched saturated fatty acid has 14 or more and 18 or less carbon atoms, whereby the reaction efficiency between the dextrin and the fatty acid is improved while adequate viscosity properties are imparted to an oil.
  • the molar fraction of the linear saturated fatty acid in the fatty acid is 0.75 or more and 0.95 or less, whereby a gelled oil has a smooth state while the restoring force is improved.
  • the average degree of substitution of the fatty acid per glucose unit is 1.5 or more and 2.0 or less, whereby the syneresis properties are reduced.
  • the above-described dextrin fatty acid ester may be configured such that the average degree of glycopolymerization of the dextrin is 3 or more and 50 or less.
  • the above-described dextrin fatty acid ester may be configured such that the molar fraction of the linear saturated fatty acid in the fatty acid is 0.8 or more and 0.9 or less, and the average degree of substitution of the fatty acid per glucose unit is 1.65 or more and 1.80 or less.
  • the restoring force of an oil containing the dextrin fatty acid ester is improved while the syneresis properties are reduced.
  • the above-described dextrin fatty acid ester may be configured such that the linear saturated fatty acid is palmitic acid, and the branched saturated fatty acid is isopalmitic acid.
  • the above-described cosmetic may be configured such that the oil includes a volatile hydrocarbon oil.
  • the dextrin fatty acid ester which has properties of imparting an excellent restoring force to cosmetics, imparts a restoring force to a volatile hydrocarbon oil having a low viscosity even if its content is small with respect to the volatile hydrocarbon oil. Therefore, the dextrin fatty acid ester particularly exerts effects in such a way that the degree of freedom of cosmetic formulation is enhanced.
  • FIG. 1 is a table showing conditions for preparing dextrin fatty acid esters of Examples 1 to 6 and Comparative Examples 1 to 9.
  • FIG. 2 is a table showing the molar fractions of a linear saturated fatty acid and a branched saturated fatty acid, the average degree of substitution per glucose unit, and yields as to the dextrin fatty acid esters of Examples 1 to 6 and Comparative Examples 1 to 9.
  • FIG. 3 is a table showing a concentration and an initial viscosity as to samples of the dextrin fatty acid esters of Examples 1 to 6 and Comparative Examples 1 to 9 each dissolved in mineral oil or isododecane.
  • FIG. 4 is a graph illustrating the viscosities of the dextrin fatty acid esters in a still standing state and the viscosities of the dextrin fatty acid esters in a stirred state.
  • FIG. 5 is a table showing results of evaluating the samples of the dextrin fatty acid esters of Examples 1 to 6 and Comparative Examples 1 to 9 each dissolved in mineral oil or isododecane.
  • FIG. 6 is a table showing results of evaluating a mascara containing the dextrin fatty acid ester of each of Examples and Comparative Examples.
  • FIG. 8 is a table showing results of evaluating a cleansing gel containing the dextrin fatty acid ester of each of Examples and Comparative Examples.
  • FIG. 9 is a table showing results of evaluating a hair treatment gel containing the dextrin fatty acid ester of each of Examples and Comparative Examples.
  • FIG. 10 is a table showing results of evaluating a lip color containing the dextrin fatty acid ester of each of Examples and Comparative Examples.
  • FIG. 11 is a table showing results of evaluating a lip gloss containing the dextrin fatty acid ester of each of Examples and Comparative Examples.
  • FIG. 12 is a table showing results of evaluating an oil foundation containing the dextrin fatty acid ester of each of Examples and Comparative Examples.
  • FIG. 13 is a table showing results of evaluating a beauty oil containing the dextrin fatty acid ester of each of Examples and Comparative Examples.
  • FIG. 14 is a table showing results of evaluating a liquid rouge containing the dextrin fatty acid ester of each of Examples and Comparative Examples.
  • FIG. 15 is a table showing results of evaluating a gel eyeliner containing the dextrin fatty acid ester of each of Examples and Comparative Examples.
  • the dextrin fatty acid ester is an esterification product of a dextrin and a fatty acid and has a structure represented by the following chemical formula 1:
  • n represents the degree of polymerization of the dextrin
  • A represents a fatty acid skeleton or hydrogen.
  • a decomposition product of a starch can be used as the dextrin of the dextrin fatty acid ester.
  • the starch that can be used is prepared with wheat, potato, corn, rice, cassava, mung bean, or the like as a raw material.
  • a conventional method can be used as a decomposition method. For example, one or more of acid treatment, alkali treatment, and enzymatic treatment can be used.
  • the dextrin fatty acid ester comprises at least a dextrin fatty acid ester given below.
  • the average degree of glycopolymerization of the dextrin is 3 or more and 100 or less, particularly preferably 10 or more and 50 or less. Provided that the average degree of glycopolymerization is 3 or more, the dextrin fatty acid ester becomes wax-like. Therefore, failure to obtain a soft gel is thereby prevented. Provided that the average degree of glycopolymerization is 100 or less, problems are inhibited, such as excessive reduction in the solubility of the dextrin fatty acid ester in an oil caused by a high dissolution temperature of the dextrin fatty acid ester in the oil.
  • the fatty acid of the dextrin fatty acid ester comprises one or more linear saturated fatty acids having 14 or more and 18 or less carbon atoms and one or more branched saturated fatty acids having 14 or more and 18 or less carbon atoms.
  • linear saturated fatty acid having 14 or more and 18 or less carbon atoms examples include myristic acid (the number of carbon atoms: 14), pentadecanoic acid (the number of carbon atoms: 15), palmitic acid (the number of carbon atoms: 16), heptadecanoic acid (the number of carbon atoms: 17), and stearic acid (the number of carbon atoms: 18).
  • palmitic acid is preferred.
  • the linear saturated fatty acid has 14 or more carbon atoms, the oil-gelling power is strengthened.
  • the linear saturated fatty acid has 18 or less carbon atoms, the white turbidity of a gelled oil is prevented so that the transparency of the oil is ensured.
  • a linear saturated fatty acid having 16 carbon atoms is excellent in both oil-gelling power and transparency.
  • the branched saturated fatty acid having 14 or more and 18 or less carbon atoms include isomyristic acid (the number of carbon atoms: 14), isopentadecanoic acid (the number of carbon atoms: 15), isopalmitic acid (the number of carbon atoms: 16), isoheptadecanoic acid (the number of carbon atoms: 17), and isostearic acid (the number of carbon atoms: 18).
  • isopalmitic acid is preferred.
  • the branched saturated fatty acid has 14 or more carbon atoms, sufficient viscosity properties are imparted even to an oil having a low viscosity.
  • the branched saturated fatty acid has 18 or less carbon atoms
  • the bulkiness of the branched saturated fatty acid with respect to the dextrin is suppressed so that the difficult bonding of the branched saturated fatty acid to the dextrin during esterification reaction is controlled.
  • the branched saturated fatty acid is bonded to the dextrin, reduction in reaction efficiency caused by the difficult bonding of the linear saturated fatty acid to the dextrin is prevented because the bulkiness of the branched saturated fatty acid is suppressed.
  • a branched saturated fatty acid having 14 or more and 16 or less carbon atoms has good reaction efficiency because its bulkiness is suppressed.
  • the isomyristic acid comprises one or more isomyristic acids. Examples thereof include, but are not limited to, 11-methyltridecanoic acid and 12-methyltridecanoic acid.
  • the isopalmitic acid comprises one or more isopalmitic acids. Examples thereof include, but are not limited to, 14-methylpentadecanoic acid and 2-hexyldecanoic acid.
  • the isostearic acid comprises one or more isostearic acids.
  • 5,7,7-trimethyl-2-(1,3,3-trimethylbutyl)-octanoic acid is aldol-type isostearic acid and can be produced as follows: first, branched aldehydes having 9 carbon atoms are obtained through the oxo reaction of isobutylene dimers. Then, a branched unsaturated aldehyde having 18 carbon atoms is obtained through the aldol condensation between these branched aldehydes. The obtained branched unsaturated aldehyde can be hydrogenated and oxidized to obtain the isostearic acid.
  • 2-heptylundecanoic acid can be produced by subjecting nonyl alcohol to Guerbet reaction, followed by oxidation.
  • Methyl-branched isostearic acid in which the branched chain is a methyl group is obtained, for example, as a by-product from the dimer production of oleic acid (e.g., J. Amer. Oil Chem. Soc., 51, 522 (1974)). Examples thereof include a commercially available product from Emery Oleochemicals (hereinafter, referred to as Emery type).
  • a starting material for the starting material dimer acid for the Emery-type isostearic acid may include linoleic acid, linolenic acid, or the like, in addition to the oleic acid.
  • the linear fatty acid skeleton has a molar fraction of 0.75 or more and 0.95 or less, particularly preferably 0.80 or more and 0.90 or less.
  • the molar ratio between the linear saturated fatty acid and the branched saturated fatty acid of the dextrin fatty acid ester is within the range of 75:25 to 95:5, particularly preferably 80:20 to 90:10.
  • the molar fraction of the linear saturated fatty acid with respect to the whole fatty acid is 0.95 or less, the white turbidity of a gelled oil is prevented so that the transparency of the oil is ensured. Also, a gel is prevented from becoming rough and non-smooth due to a small proportion of the branched saturated fatty acid. Since the molar fraction of the linear saturated fatty acid with respect to the whole fatty acid is 0.75 or more, the oil-gelling power is also prevented from being too low due to an excessively high proportion of the branched saturated fatty acid.
  • the average degree of substitution of the fatty acid per glucose unit of the dextrin fatty acid ester is 1.5 or more and 2.0 or less, particularly preferably 1.65 or more and 1.80 or less. Provided that the average degree of substitution is 1.5 or more, the oil-gelling power is prevented from being reduced. This also prevents the promotion of the syneresis properties of allowing an oil to float on the surface of a cosmetic film or an oil to separate during preservation, due to low solubility of the dextrin fatty acid ester in an oil. Provided that the average degree of substitution is 2.0 or less, excessive increase in the amount of the fatty acid bonded to the dextrin is prevented. Therefore, the heat resistance of a gel is obtained in such a way that the gel is kept even at, for example, approximately 50° C. In other words, a stable gel cannot be prepared if the average degree of substitution of the fatty acid is too large or too small.
  • dextrin fatty acid ester examples include the following:
  • the dextrin fatty acid ester preferably contains palmitic acid as the linear saturated fatty acid bonded to the dextrin and preferably contains isopalmitic acid such as 2-hexyldecanoic acid as the branched saturated fatty acid ester.
  • a conventional production method can be used as a method for producing the dextrin fatty acid ester.
  • a fatty acid chloride can be added to the dextrin in the presence of a basic catalyst such as pyridine, triethylamine, or 3-methylpyridine to produce the dextrin fatty acid ester.
  • the oil to be combined with the dextrin fatty acid ester is not particularly limited as long as the oil can be used as a material for cosmetics and is capable of producing effects such as an excellent restoring force and low syneresis properties by the combination with the dextrin fatty acid ester.
  • One type of oil may be used, or plural types of oils may be used as a mixture.
  • These oils include an oil that has a high viscosity (e.g., polybutene and castor oil) or a solid state (e.g., higher fatty acids and waxes) in itself, which may be used, for example, in combination with a liquid oil or dextrin fatty acid ester.
  • hydrocarbon oils include liquid paraffin, squalane, isoparaffin, isododecane, isohexadecane, heavy liquid isoparaffin, polybutene, and Vaseline.
  • ester oils include glyceryl tri-2-ethylhexanoate, glyceryl tri(caprylate/caprate), diglyceryl mono-, di-, tri-, tetra-isostearate, polyglyceryl isostearate, neopentyl glycol dioctanoate, neopentyl glycol dicaprate, 2-cetyl ethylhexanoate, isopropyl myristate, isopropyl palmitate, butyl stearate, 2-ethylhexyl palmitate, isononyl isononanoate, isotridecyl isononanoate, stearyl stearate, isostearyl myristate, oste
  • the volatile hydrocarbon oil to be combined with the dextrin fatty acid ester means a hydrocarbon oil having a kinematic viscosity (37.8° C.) in the range of 0.5 mm 2 /s or more and 15 mm 2 /s or less.
  • a linear or branched form can be used as the volatile hydrocarbon oil.
  • volatile hydrocarbon oils include isoparaffin-based hydrocarbon oils such as isodecane, isododecane, isohexadecane, and isoparaffin.
  • Examples of commercial products thereof include Permethyl 99A, Permethyl 101A, and Permethyl 102A (manufactured by Presperse Corp.), Isopar A, Isopar C, Isopar D, Isopar E, Isopar G, Isopar H, Isopar K, Isopar L, and Isopar M (manufactured by Exxon Mobil Corp.), Shellsol 71 (manufactured by Shell Chemicals), Soltrol 100, Soltrol 130, and Soltrol 220 (manufactured by Chevron Phillips Chemical Company), Isozol 400 (manufactured by Nippon Petrochemicals Co., Ltd.), Parleam 4 (manufactured by NOF Corp.), IP Solvent 1016, IP Solvent 1620, and IP Solvent 2028 (manufactured by Idemitsu Petrochemical Co., Ltd.), and Isohexadecane and Tetraisobutane 90 (manufactured by Bay
  • the cosmetic containing this dextrin fatty acid ester can be supplemented, if necessary, with general components that may be added to cosmetics, without impairing the effects brought about by the addition of the dextrin fatty acid ester.
  • general components that may be added to cosmetics, without impairing the effects brought about by the addition of the dextrin fatty acid ester.
  • Examples thereof include beauty components, surfactants, film forming agents, aqueous components, oil components, antiseptics, antioxidants, ultraviolet absorbers, ultraviolet scattering agents, fragrances, and powders.
  • the beauty components include vitamins, anti-inflammatory agents, and crude drugs.
  • surfactants examples include nonionic surfactants, anionic surfactants, cationic surfactants, and amphoteric surfactants.
  • the film forming agents include: polymer emulsions such as alkyl acrylate copolymer emulsions, alkyl acrylate-styrene copolymer emulsions, polyvinyl acetate emulsions, and vinylpyrrolidone-styrene copolymer emulsions; silicone-based resins such as trimethylsiloxysilicic acid, trimethylsiloxysilylpropylcarbamic acid, fluorine-modified silicone, and acrylic silicone; latexes such as polyvinyl alcohol, polyvinyl acetate, and polyalkyl acetate; and cellulose derivatives such as dextrin, alkylcellulose, and nitrocellulose.
  • polymer emulsions such as alkyl acrylate copolymer emulsions, alkyl acrylate-styrene copolymer emulsions, polyvinyl acetate emulsions, and vinylpyrrolidone
  • aqueous components examples include: lower alcohols such as ethyl alcohol and butyl alcohol; glycols such as propylene glycol, 1,3-butylene glycol, 1,2-pentanediol, dipropylene glycol, and polyethylene glycol; glycerols such as glycerin, diglycerin, and polyglycerin; and extracts of plants such as aloe vera, witch-hazel, hamamelis, cucumber, lemon, lavender, and rose.
  • lower alcohols such as ethyl alcohol and butyl alcohol
  • glycols such as propylene glycol, 1,3-butylene glycol, 1,2-pentanediol, dipropylene glycol, and polyethylene glycol
  • glycerols such as glycerin, diglycerin, and polyglycerin
  • extracts of plants such as aloe vera, witch-hazel, hamamelis, cucumber, lemon, lavender, and rose.
  • water-soluble polymers examples include: natural products such as guar gum, sodium chondroitin sulfate, sodium hyaluronate, gum arabic, sodium alginate, and carrageenan; semisynthetic products such as methylcellulose, hydroxyethylcellulose, and carboxymethylcellulose; and synthetic products such as carboxyvinyl polymers, alkyl-added carboxyvinyl polymers, and sodium polyacrylate.
  • natural products such as guar gum, sodium chondroitin sulfate, sodium hyaluronate, gum arabic, sodium alginate, and carrageenan
  • semisynthetic products such as methylcellulose, hydroxyethylcellulose, and carboxymethylcellulose
  • synthetic products such as carboxyvinyl polymers, alkyl-added carboxyvinyl polymers, and sodium polyacrylate.
  • examples include proteins, mucopolysaccharides, collagen, elastin, and keratin.
  • oils components examples include dextrin fatty acid esters other than the dextrin fatty acid ester described above. Examples thereof include dextrin palmitate, dextrin myristate, dextrin (palmitate/ethylhexanoate), and dextrin isostearate. Other examples of the oil components include inulin fatty acid esters such as inulin stearate.
  • antiseptics examples include p-hydroxybenzoate ester, phenoxyethanol, and 1,2-pentanediol.
  • antioxidants examples include ⁇ -tocopherol and ascorbic acid.
  • the powders include titanium oxide, zinc oxide, iron oxide yellow, iron oxide black, iron red, carbon black, mica, sericite, talc, kaolin, barium sulfate, bentonite, smectite, boron nitride, iron blue, ultramarine blue, bismuth oxychloride, titanium dioxide, aluminum powders, magnesium stearate, zinc stearate, N-acyl lysine, nylon, organic pigments, organic dyes, nylon powders, urethane powders, and spherical silicone resin powders.
  • these powders can each be treated with a fluorine compound, silicone oil, metallic soap, a surfactant, a dextrin fatty acid ester, an inulin fatty acid ester, a fat, or the like and used.
  • One or more of these dextrin fatty acid esters are contained in a cosmetic containing an oil as a base.
  • the content of the dextrin fatty acid ester in the cosmetic is preferably 1% by weight or more and 20% by weight or less.
  • a gel having a restoring force is prepared.
  • a gel is softened and becomes a sol state, which is a flowable state, from the gel by the application of a force.
  • the cosmetic containing the dextrin fatty acid ester mentioned above has both of an excellent restoring force and low syneresis properties.
  • This cosmetic is in a gel state without a force.
  • the gel is disrupted by the application of a force so that the gel becomes a sol state which is a thick liquid state.
  • the cosmetic further returns to the gel state when left.
  • the viscosity of the cosmetic is reduced by the application of a force, for example, in order to take out the cosmetic from a preservation container containing the cosmetic. Therefore, the cosmetic, even if highly viscous, is easily taken out of the preservation container. Also, the taken out cosmetic resists flowing down when taken up on the palm or put on the face or the body.
  • the viscosity is reduced during stirring whereas the viscosity is restored in a short time after the completion of stirring. Therefore, the cosmetic with the dispersoid uniformly dispersed can be taken out of the preservation container. Furthermore, preservation stability is improved because syneresis is suppressed during preservation.
  • the viscosity of the cosmetic is reduced by the application of a force, the cosmetic spreads well and is easy to apply. Therefore, cosmetics, such as mascaras, lip colors, lip glosses, oil foundations, liquid rouges, eyeliners, or manicures, for forming a cosmetic film on eyelashes, the skin, fingernails, etc. attain a beautiful finish because the cosmetics are easily applied uniformly with a desired thickness.
  • the cosmetics restore their viscosities. Therefore, the cosmetics are prevented from flowing down or being smudged and thus easily maintain the cosmetic film state of completion of application.
  • the cosmetic film thus formed restores a viscosity if the viscosity is reduced by the movement of lips, regions around eyes, etc.
  • the cosmetic film is prevented, for example, from coming off or being deteriorated and lasts long (long lasting look).
  • the cosmetic film state of a finish is maintained over time owing to the excellent restoring force and low syneresis properties by the dextrin fatty acid ester.
  • dextrin fatty acid ester is a gelling agent that confers a restoring force.
  • a cosmetic containing the dextrin fatty acid ester possesses a viscosity practical as cosmetics.
  • the cosmetic also has high transparency and is also excellent in high-temperature stability which allows the shape to be retained even at a high temperature, for example, 50° C., solubility in a plurality of oils, etc. Therefore, the dextrin fatty acid ester can be used in diverse cosmetics.
  • the practical use of dextrin fatty acid esters for diverse cosmetics may also be improved by the recipe adjustment of each component constituting the cosmetics. However, such recipe adjustment ultimately takes a lot of trial and error on the selection or recipe of other components for each cosmetic.
  • the configuration of the dextrin fatty acid ester mentioned above reduces such inconvenience in each cosmetic by virtue of the characteristics of the dextrin fatty acid ester.
  • the table of FIG. 1 shows the conditions for preparing the dextrin fatty acid esters of Examples 1 to 6 and Comparative Examples 1 to 9.
  • the table of FIG. 2 shows the molar fractions, average degree of substitution, and yields as to the synthesized products of Examples 1 to 6 and Comparative Examples 1 to 9.
  • the molar fractions are shown in calculated percentage in the table.
  • the analysis equipment used in these Examples was as described below.
  • the average degree of substitution was determined by the measurement of the amount of an alkali required for alkali decomposition, i.e., saponification value measurement.
  • Molar fraction of fatty acid in synthesized product i.e., saponification value measurement.
  • the molar fraction was determined by the GC measurement of the fatty acid after alkali decomposition.
  • Viscoelasticity measurement apparatus MCR100 manufactured by Paar Physica
  • An amount of 73 g of a dextrin having an average degree of polymerization of 20 was dispersed at 80° C. in 219 g of dimethylformamide as a solvent and 99 g of pyridine as a basic catalyst.
  • 223 g of palmitic acid chloride as a linear saturated fatty acid chloride and 52 g of isopalmitic acid chloride as a branched saturated fatty acid chloride were added dropwise in 60 minutes.
  • the isopalmitic acid chloride was 2-hexyldecanoic acid chloride.
  • the molar fractions of the linear saturated fatty acid and the branched saturated fatty acid added dropwise were 81% and 19%, respectively, in terms of percentage.
  • the mixture was reacted at a reaction temperature of 95° C. for 4 hours.
  • the reaction solution was precipitated in methanol and then filtered. Solid matter was washed with methanol and dried to obtain 220 g of a white powder.
  • the recovered dextrin fatty acid ester was subjected to saponification value measurement and GC analysis after alkali decomposition to determine that the average degree of substitution of the fatty acid was 1.67, the molar fraction of the linear saturated fatty acid bonded to the dextrin in the fatty acid was 85%, and the molar fraction of the branched saturated fatty acid bonded to the dextrin in the fatty acid was 15%.
  • An amount of 68 g of a dextrin having an average degree of polymerization of 50 was dispersed at 80° C. in 135 g of N-methylpyrrolidone as a solvent and 116 g of ⁇ -picoline as a basic catalyst.
  • 206 g of stearic acid chloride as a linear saturated fatty acid chloride and 79 g of isomyristic acid chloride (12-methyltridecanoic acid chloride) as a branched saturated fatty acid chloride were added dropwise in 60 minutes.
  • the molar fractions of the linear saturated fatty acid and the branched saturated fatty acid added dropwise were 68% and 32%, respectively, in terms of percentage.
  • the mixture was reacted at a reaction temperature of 95° C. for 4 hours.
  • the reaction solution was precipitated in methanol and then filtered. Solid matter was washed with methanol and dried to obtain 251 g of a white powder.
  • the recovered dextrin fatty acid ester was subjected to saponification value measurement and GC analysis after alkali decomposition to determine that the average degree of substitution of the fatty acid was 1.99, the molar fraction of the linear saturated fatty acid bonded to the dextrin was 75%, and the molar fraction of the branched saturated fatty acid bonded to the dextrin was 25%.
  • the reaction solution was precipitated in methanol and then filtered. Solid matter was washed with methanol and dried to obtain 203 g of a white powder.
  • the recovered dextrin fatty acid ester was subjected to saponification value measurement and GC analysis after alkali decomposition to determine that the average degree of substitution of the fatty acid was 1.52, the molar fraction of the linear saturated fatty acid bonded to the dextrin was 95%, and the molar fraction of the branched saturated fatty acid bonded to the dextrin was 5%.
  • An amount of 70 g of a dextrin having an average degree of polymerization of 20 was dispersed at 80° C. in 211 g of dimethylformamide as a solvent and 116 g of ⁇ -picoline as a basic catalyst.
  • 93 g of myristic acid chloride as a linear saturated fatty acid chloride, 103 g of palmitic acid chloride as a linear saturated fatty acid chloride, and 69 g of isopalmitic acid chloride as a branched saturated fatty acid chloride were added dropwise in 60 minutes.
  • the isopalmitic acid chloride was 2-hexyldecanoic acid chloride.
  • the molar fractions of the linear saturated fatty acid and the branched saturated fatty acid added dropwise were 75% and 25%, respectively, in terms of percentage. After the completion of dropwise addition, the mixture was reacted at a reaction temperature of 95° C. for 4 hours. The reaction solution was precipitated in methanol and then filtered. Solid matter was washed with methanol and dried to obtain 192 g of a white powder.
  • the recovered dextrin fatty acid ester was subjected to saponification value measurement and GC analysis after alkali decomposition to determine that the average degree of substitution of the fatty acid was 1.80, the molar fraction of the linear saturated fatty acid bonded to the dextrin was 80%, and the molar fraction of the branched saturated fatty acid bonded to the dextrin was 20%.
  • An amount of 74 g of a dextrin having an average degree of polymerization of 10 was dispersed at 80° C. in 221 g of dimethylformamide as a solvent and 116 g of ⁇ -picoline as a basic catalyst.
  • 237 g of palmitic acid chloride as a linear saturated fatty acid chloride and 39 g of isopalmitic acid chloride as a branched saturated fatty acid chloride were added dropwise in 60 minutes.
  • the isopalmitic acid chloride was 2-hexyldecanoic acid chloride.
  • the molar fractions of the linear saturated fatty acid and the branched saturated fatty acid added dropwise were 86% and 14%, respectively, in terms of percentage.
  • the mixture was reacted at a reaction temperature of 95° C. for 4 hours.
  • the reaction solution was precipitated in methanol and then filtered. Solid matter was washed with methanol and dried to obtain 211 g of a white powder.
  • the recovered dextrin fatty acid ester was subjected to saponification value measurement and GC analysis after alkali decomposition to determine that the average degree of substitution of the fatty acid was 1.61, the molar fraction of the linear saturated fatty acid bonded to the dextrin was 90%, and the molar fraction of the branched saturated fatty acid bonded to the dextrin was 10%.
  • An amount of 74 g of a dextrin having an average degree of polymerization of 2 was dispersed at 80° C. in 221 g of dimethylformamide as a solvent and 116 g of ⁇ -picoline as a basic catalyst.
  • 220 g of palmitic acid chloride as a linear saturated fatty acid chloride and 55 g of isopalmitic acid chloride as a branched saturated fatty acid chloride were added dropwise in 60 minutes.
  • the isopalmitic acid chloride was 2-hexyldecanoic acid chloride.
  • the molar fractions of the linear saturated fatty acid and the branched saturated fatty acid added dropwise were 80% and 20%, respectively, in terms of percentage.
  • the mixture was reacted at a reaction temperature of 95° C. for 4 hours.
  • the reaction solution was precipitated in methanol and then filtered. Solid matter was washed with methanol and dried to obtain 230 g of a white powder.
  • the recovered dextrin fatty acid ester was subjected to saponification value measurement and GC analysis after alkali decomposition to determine that the average degree of substitution of the fatty acid was 1.80, the molar fraction of the linear saturated fatty acid bonded to the dextrin was 83%, and the molar fraction of the branched saturated fatty acid bonded to the dextrin was 17%.
  • An amount of 77 g of a dextrin having an average degree of polymerization of 20 was dispersed at 80° C. in 232 g of dimethylformamide as a solvent and 116 g of ⁇ -picoline as a basic catalyst.
  • 206 g of palmitic acid chloride as a linear saturated fatty acid chloride and 41 g of 2-ethylhexanoic acid chloride having 8 carbon atoms as a branched saturated fatty acid chloride were added dropwise in 60 minutes.
  • the molar fractions of the linear saturated fatty acid and the branched saturated fatty acid added dropwise were 75% and 25%, respectively, in terms of percentage.
  • the mixture was reacted at a reaction temperature of 95° C. for 4 hours.
  • the reaction solution was precipitated in methanol and then filtered. Solid matter was washed with methanol and dried to obtain 185 g of a white powder.
  • the recovered dextrin fatty acid ester was subjected to saponification value measurement and GC analysis after alkali decomposition to determine that the average degree of substitution of the fatty acid was 1.50, the molar fraction of the linear saturated fatty acid bonded to the dextrin was 87%, and the molar fraction of the branched saturated fatty acid bonded to the dextrin was 13%.
  • An amount of 56 g of a dextrin having an average degree of polymerization of 20 was dispersed at 80° C. in 168 g of dimethylformamide as a solvent and 116 g of ⁇ -picoline as a basic catalyst.
  • 217 g of palmitic acid chloride as a linear saturated fatty acid chloride and 58 g of isopalmitic acid chloride as a branched saturated fatty acid chloride were added dropwise in 60 minutes.
  • the isopalmitic acid chloride was 2-hexyldecanoic acid chloride.
  • the molar fractions of the linear saturated fatty acid and the branched saturated fatty acid added dropwise were 79% and 21%, respectively, in terms of percentage.
  • the mixture was reacted at a reaction temperature of 95° C. for 4 hours.
  • the reaction solution was precipitated in methanol and then filtered. Solid matter was washed with methanol and dried to obtain 201 g of a white powder.
  • the recovered dextrin fatty acid ester was subjected to saponification value measurement and GC analysis after alkali decomposition to determine that the average degree of substitution of the fatty acid was 2.06, the molar fraction of the linear saturated fatty acid bonded to the dextrin was 83%, and the molar fraction of the branched saturated fatty acid bonded to the dextrin was 17%.
  • An amount of 81 g of a dextrin having an average degree of polymerization of 20 was dispersed at 80° C. in 243 g of dimethylformamide as a solvent and 116 g of ⁇ -picoline as a basic catalyst.
  • 231 g of palmitic acid chloride as a linear saturated fatty acid chloride and 44 g of isopalmitic acid chloride as a branched saturated fatty acid chloride were added dropwise in 60 minutes.
  • the isopalmitic acid chloride was 2-hexyldecanoic acid chloride.
  • the molar fractions of the linear saturated fatty acid and the branched saturated fatty acid added dropwise were 84% and 16%, respectively, in terms of percentage.
  • the mixture was reacted at a reaction temperature of 95° C. for 4 hours.
  • the reaction solution was precipitated in methanol and then filtered. Solid matter was washed with methanol and dried to obtain 189 g of a white powder.
  • the recovered dextrin fatty acid ester was subjected to saponification value measurement and GC analysis after alkali decomposition to determine that the average degree of substitution of the fatty acid was 1.43, the molar fraction of the linear saturated fatty acid bonded to the dextrin was 87%, and the molar fraction of the branched saturated fatty acid bonded to the dextrin was 13%.
  • An amount of 72 g of a dextrin having an average degree of polymerization of 20 was dispersed at 80° C. in 216 g of dimethylformamide as a solvent and 116 g of ⁇ -picoline as a basic catalyst.
  • 184 g of lauric acid having 12 carbon atoms as a linear saturated fatty acid chloride and 44 g of isopalmitic acid chloride as a branched saturated fatty acid chloride were added dropwise in 60 minutes.
  • the isopalmitic acid chloride was 2-hexyldecanoic acid chloride.
  • the molar fractions of the linear saturated fatty acid and the branched saturated fatty acid added dropwise were 84% and 16%, respectively, in terms of percentage.
  • the mixture was reacted at a reaction temperature of 95° C. for 4 hours.
  • the reaction solution was precipitated in methanol and then filtered. Solid matter was washed with methanol and dried to obtain 169 g of a white powder.
  • the recovered dextrin fatty acid ester was subjected to saponification value measurement and GC analysis after alkali decomposition to determine that the average degree of substitution of the fatty acid was 1.62, the molar fraction of the linear saturated fatty acid bonded to the dextrin was 88%, and the molar fraction of the branched saturated fatty acid bonded to the dextrin was 12%.
  • An amount of 60 g of a dextrin having an average degree of polymerization of 20 was dispersed at 80° C. in 180 g of dimethylformamide as a solvent and 116 g of ⁇ -picoline as a basic catalyst.
  • 165 g of palmitic acid as a linear saturated fatty acid chloride and 110 g of isopalmitic acid chloride as a branched saturated fatty acid chloride were added dropwise in 60 minutes.
  • the isopalmitic acid chloride was 2-hexyldecanoic acid chloride.
  • the molar fractions of the linear saturated fatty acid and the branched saturated fatty acid added dropwise were 60% and 40%, respectively, in terms of percentage.
  • the mixture was reacted at a reaction temperature of 95° C. for 4 hours.
  • the reaction solution was precipitated in methanol and then filtered. Solid matter was washed with methanol and dried to obtain 172 g of a white powder.
  • the recovered dextrin fatty acid ester was subjected to saponification value measurement and GC analysis after alkali decomposition to determine that the average degree of substitution of the fatty acid was 1.90, the molar fraction of the linear saturated fatty acid bonded to the dextrin was 63%, and the molar fraction of the branched saturated fatty acid bonded to the dextrin was 37%.
  • An amount of 66 g of a dextrin having an average degree of polymerization of 20 was dispersed at 80° C. in 199 g of dimethylformamide as a solvent and 116 g of ⁇ -picoline as a basic catalyst.
  • 161 g of myristic acid chloride as a linear saturated fatty acid chloride and 96 g of isopalmitic acid chloride as a branched saturated fatty acid chloride were added dropwise in 60 minutes.
  • the isopalmitic acid chloride was 2-hexyldecanoic acid chloride.
  • the molar fractions of the linear saturated fatty acid and the branched saturated fatty acid added dropwise were 65% and 35%, respectively, in terms of percentage.
  • the mixture was reacted at a reaction temperature of 95° C. for 4 hours.
  • the reaction solution was precipitated in methanol and then filtered. Solid matter was washed with methanol and dried to obtain 171 g of a white powder.
  • the recovered dextrin fatty acid ester was subjected to saponification value measurement and GC analysis after alkali decomposition to determine that the average degree of substitution of the fatty acid was 1.70, the molar fraction of the linear saturated fatty acid bonded to the dextrin was 70%, and the molar fraction of the branched saturated fatty acid bonded to the dextrin was 30%.
  • a measurement sample containing a general oil as a base and a measurement sample containing a volatile hydrocarbon oil as a base were prepared using each of the dextrin fatty acid esters of Examples 1 to 6 and the dextrin fatty acid esters of Comparative Examples 1 to 9.
  • the volatile hydrocarbon oil volatilizes after application of cosmetics and is used in, for example, oil foundations, mascaras, and eyeliners.
  • the general oil used was mineral oil.
  • Each of the dextrin fatty acid esters of Examples 1 to 6 and the dextrin fatty acid esters of Comparative Examples 1 to 9 was added to mineral oil of 90° C. and dissolved therein by heating.
  • a 30-ml vial manufactured by Niommen Rika Glass Co., Ltd.
  • the volatile hydrocarbon oil used was isododecane.
  • Each of the dextrin fatty acid esters of Examples 1 to 6 and the dextrin fatty acid esters of Comparative Examples 1 to 9 was added to isododecane of 70° C. and dissolved therein by heating.
  • a 30-ml vial manufactured by Niommen Rika Glass Co., Ltd.
  • the table of FIG. 3 shows the dissolution concentrations of the dextrin fatty acid esters of Examples 1 to 6 and the dextrin fatty acid esters of Comparative Examples 1 to 9, and the viscosities of the measurement samples.
  • the restoring force is the amount of the viscosity increased per unit time of the measurement sample form when a force was applied to each gelled measurement sample to when the force was canceled.
  • the viscosity (Pa ⁇ s) was measured while the sample was rotated at a rotational speed of 0.1 (s ⁇ 1 ) for 4 minutes, 100 (s ⁇ 1 ) for 2 minutes, and 0.1 (s ⁇ 1 ) for 8 minutes using a measurement jig.
  • the rotational speed of 0.1 (s ⁇ 1 ) corresponds to a still standing state
  • the rotational speed of 100 (s ⁇ 1 ) corresponds to a stirred state.
  • FIG. 4 shows a graph illustrating thixotropy as to the measurement sample containing the dextrin fatty acid ester of Example 1 and the measurement samples containing the dextrin fatty acid esters of Comparative Examples 2 and 3.
  • the ordinate shows viscosity (Pa ⁇ s), and the abscissa shows time.
  • the viscosity was reduced to almost 0 Pa ⁇ s from the rotational speeds 0.1 (s ⁇ 1 ) to 100 (s ⁇ 1 ), and the viscosity was temporarily brought back to near the original viscosity from the rotational speeds 100 (s ⁇ 1 ) to 0.1 (s ⁇ 1 ).
  • a time to restoration within 10 seconds was indicated by a double circle, a time to restoration of more than 10 seconds and within 20 seconds was indicated by a circle, and a time to restoration of more than 20 seconds or a viscosity that failed to reach half of the initial viscosity was indicated by an x-mark.
  • a measurement sample rated as a double circle or a circle has a restoring force.
  • the measurement sample of Example 4 had a time to restoration of more than 10 seconds and within 20 seconds, and the viscosities of the other samples reached half of the initial viscosity within 10 seconds.
  • the viscosity of the measurement sample of Comparative Example 7 reached half of the initial viscosity within 10 seconds
  • the viscosities of the measurement samples of Comparative Examples 1, 2, 4, and 6 reached half of the initial viscosity in a time of more than 10 seconds and within 20 seconds.
  • the viscosities of the measurement samples of Comparative Examples 3, 5, 8, and 9 failed to reach half of the initial viscosity within 20 seconds.
  • the measurement sample of Comparative Example 9 neither obtained a sufficient viscosity nor was gelled.
  • the measurement sample of Example 3 had a time to restoration of more than 10 seconds and within 20 seconds, and the viscosities of the other samples reached half of the initial viscosity within 10 seconds.
  • the viscosity of the measurement sample of Comparative Example 7 reached half of the initial viscosity within 10 seconds.
  • the viscosities of the measurement samples of Comparative Examples 1, 4, and 6 reached half of the initial viscosity in a time of more than 10 seconds and within 20 seconds.
  • the viscosities of the measurement samples of Comparative Examples 2, 3, 5, 8, and 9 failed to reach half of the initial viscosity within 20 seconds.
  • Syneresis was observed in none of the measurement samples of Examples 1, 5, and 6 containing mineral oil as a base, and syneresis was hardly observed in the measurement samples of Examples 2 to 4. Syneresis was observed in neither of the measurement samples of Comparative Examples 8 and 9 containing mineral oil as a base, and syneresis was hardly observed in the measurement sample of Comparative Example 3. Syneresis was observed after a lapse of 1 day in the remaining measurement samples of Comparative Examples 1, 2, and 4 to 7.
  • Syneresis was observed in none of the measurement samples of Examples 1 and 4 to 6 containing isododecane as a base, and syneresis was hardly observed in the measurement samples of Examples 2 to 4. Syneresis was observed in neither of the measurement samples of Comparative Examples 8 and 9 containing isododecane as a base, and syneresis was hardly observed in the measurement sample of Comparative Example 3. Syneresis was observed after a lapse of 1 day in the remaining measurement samples of Comparative Examples 1, 2, and 4 to 7.
  • the viscosity upon disruption of the gel was measured using a viscoelasticity measurement apparatus.
  • a level at which the gel became a flowable liquid when disrupted by stirring was indicated by a double circle
  • a level at which the gel became a thick liquid when disrupted was indicated by a circle
  • a level at which the gel was hardly flowable when disrupted was indicated by an x-mark.
  • Turbidity was observed in none of the measurement samples of Examples 1 to 6 containing mineral oil as a base. Turbidity was observed in none of the measurement samples of Comparative Examples 3, 6, 8, and 9. Turbidity was slightly present in the measurement sample of Comparative Example 1, and turbidity was observed in the measurement samples of Comparative Examples 2, 4, 5, and 7.
  • Turbidity was observed in none of the measurement samples of Examples 1 to 6 containing isododecane as a base. Turbidity was observed in none of the measurement samples of Comparative Examples 3, 6, 8, and 9. Turbidity was slightly present in the measurement sample of Comparative Example 1, and turbidity was observed in the measurement samples of Comparative Examples 2, 4, 5, and 7.
  • dextrin fatty acid esters of Examples 1 to 6 and the dextrin fatty acid esters of Comparative Examples 1 to 9 were evaluated for their dissolution temperatures in mineral oil. Also, the dextrin fatty acid esters of Examples 1 to 6 and the dextrin fatty acid esters of Comparative Examples 1 to 9 were evaluated for their dissolution temperatures in isododecane.
  • a level at which the dextrin fatty acid ester was dissolved in mineral oil of 90° C. was indicated by a double circle
  • a level at which the dextrin fatty acid ester was dissolved in mineral oil of 100° C. was indicated by a circle
  • a level at which the dextrin fatty acid ester was dissolved in mineral oil with a temperature higher than 100° C. was indicated by an x-mark.
  • a level at which the dextrin fatty acid ester was dissolved in isododecane of 75° C. was indicated by a double circle
  • a level at which the dextrin fatty acid ester was dissolved in isododecane of 85° C. was indicated by a circle
  • a level at which the dextrin fatty acid ester was dissolved in isododecane with a temperature higher than 85° C. was indicated by an x-mark.
  • the dextrin fatty acid esters of Examples 1, 2, 5, and 6 were dissolved in mineral oil of 90° C., and the dextrin fatty acid esters of Examples 3 and 4 were dissolved in mineral oil of 100° C.
  • the dextrin fatty acid esters of Comparative Examples 1 and 7 to 9 were dissolved in mineral oil of 90° C., and the dextrin fatty acid esters of Comparative Examples 2, 3, 5, and 6 were dissolved in mineral oil of 100° C.
  • the dextrin fatty acid ester of Comparative Example 4 was dissolved in mineral oil with a temperature higher than 100° C.
  • the dextrin fatty acid esters of Examples 1, 2, 5, and 6 were dissolved in isododecane of 75° C., and the dextrin fatty acid esters of Examples 3 and 4 were dissolved in isododecane of 85° C.
  • the dextrin fatty acid esters of Comparative Examples 1, 3, 8, and 9 were dissolved in isododecane of 75° C., and isododecane of Comparative Examples 2 and 5 to 7 were dissolved in isododecane of 85° C.
  • the dextrin fatty acid ester of Comparative Example 4 was dissolved in isododecane with a temperature higher than 85° C.
  • Microcrystalline wax (Multiwax W-445 manufactured by Sonneborn, LLC)
  • Candelilla wax (Refined Candelilla Wax Special manufactured by CERARICA NODA Co., Ltd.)
  • Iron oxide black (Tarox BL-100 manufactured by Titan Kogyo, Ltd.)
  • the components (6) and (7) are sold as a premixed product (X-21-5595 manufactured by Shin-Etsu Chemical Co., Ltd.).
  • the dextrin fatty acid esters of Examples 1, 3, and 4 and Comparative Examples 2, 3, and 7 to 9 were respectively used as the component (1) in Examples A1 to A3 and Comparative Examples A1 to A5.
  • the components (1) and (2) were heated and mixed, and the components (3) to (10) were added thereto, followed by mixing.
  • a container was filled with the mixture to obtain eight evaluation samples (mascaras).
  • the mascaras of Comparative Examples A4 and A5 scored low in the evaluation of rub resistance because the dextrin fatty acid ester itself was soft and isododecane left stickiness even after volatilization.
  • the mascaras of Examples A1 to A3 were rated as a double circle for all of the items except that the mascara of Example A2 was rated as a circle for volume-up effect.
  • the mascaras of Examples A1 to A3 had a high rating in comprehensive evaluation, as compared with the mascaras of Comparative Examples A1 to A5.
  • the components (1) to (7) were dissolved by warming to obtain a body oil.
  • the body oils of Examples B1 to B3 were rated as a double circle for all of the items.
  • the body oils of Comparative Examples B1 to B5 had a lower rating in comprehensive evaluation than that of the body oils of Examples B1 to B3, though rated as a double circle for some items.
  • Sorbeth-40 tetraoleate (UNIOX ST-40E manufactured by NOF Corp.)
  • the dextrin fatty acid esters of Examples 1, 3, and 4 and Comparative Examples 2, 3, and 7 to 9 were respectively used as the component (1) in Examples C1 to C3 and Comparative Examples C1 to C6.
  • the components (1) to (7) were dissolved by warming. To the solution, the component (8) was added in small portions with stirring. The mixture was further cooled to room temperature with stirring to obtain a cleansing gel.
  • the cleansing gels of Examples C1 to C3 were rated as a double circle for all of the items.
  • the cleansing gels of Comparative Examples C1 to C5 had a lower rating in comprehensive evaluation than that of the cleansing gels of Examples C1 to C3, though rated as a double circle for some items.
  • the dextrin fatty acid esters of Examples 1, 3, and 4 and Comparative Examples 2, 3, and 7 to 9 were respectively used as the component (1) in Examples D1 to D3 and Comparative Examples D1 to D6.
  • the components (1) to (6) were dissolved by warming to obtain a hair treatment gel.
  • the hair treatment gels of Examples D1 to D3 were rated as a double circle for all of the items except for a circle for transparency.
  • the hair treatment gels of Comparative Examples D1 to D5 were rated as a circle, a triangle, or an x-mark and had a lower rating in comprehensive evaluation than that of the hair treatment gels of Examples D1 to D3.
  • the dextrin fatty acid esters of Examples 1, 3, and 4 and Comparative Examples 2, 3, and 7 to 9 were respectively used as the component (1) in Examples E1 to E3 and Comparative Examples E1 to E6.
  • the component (7) was dispersed in a portion of the component (2), and the component (1), the remaining amount of the component (2), and the components (3) and (4) were dissolved by warming.
  • the mixture of the components (1) to (4) was added by stirring, followed by uniform mixing and dispersion.
  • the components (5) and (6) were dissolved by warming and added to the mixture and dispersion of the components (1) to (4) at 80° C. for emulsification.
  • the emulsion was cooled to obtain a lip color.
  • the lip colors of Examples E1 to E3 were rated as a double circle for all of the items.
  • the lip colors of Comparative Examples E1 to E5 were rated as a circle, a triangle, or an x-mark for all of the items except that the lip color of Comparative Example E1 was rated as a double circle for preservation stability.
  • the lip colors of Comparative Examples E1 to E5 had a lower rating in comprehensive evaluation than that of the lip colors of Examples E1 to E3.
  • the dextrin fatty acid esters of Examples 1, 3, and 4 and Comparative Examples 2, 3, and 7 to 9 were respectively used as the component (1) in Examples F1 to F3 and Comparative Examples F1 to F6.
  • the components (1) to (5) were dissolved by warming.
  • the component (6) was further added thereto, and the mixture is dissolved by warming.
  • the component (7) was added, warmed, and uniformly dispersed. Then, the dispersion was cooled to obtain a lip gloss.
  • the lip glosses of Examples F1 to F3 were rated as a double circle for all of the items.
  • the lip glosses of Comparative Examples F1 to F5 were rated as a circle or a triangle for all of the evaluation items and had a lower rating in comprehensive evaluation than that of the lip glosses of Examples F1 to F3.
  • the dextrin fatty acid esters of Examples 1, 3, and 4 and Comparative Examples 2, 3, and 7 to 9 were respectively used as the component (1) in Examples G1 to G3 and Comparative Examples G1 to G6.
  • the components (1) to (5) were dissolved by warming.
  • the component (7) was further added thereto and uniformly dispersed. While this dispersion was cooled, the component (6) was added thereto at 50° C. The mixture was cooled to obtain an oil foundation.
  • the oil foundations of Examples G1 to G3 were rated as a double circle for all of the items.
  • the oil foundations of Comparative Examples G1 to G5 were rated as a circle, a triangle, or an x-mark for all of the items except that the oil foundations of Comparative Examples G1 and G2 were rated as a double circle for long-lasting look.
  • the oil foundations of Comparative Examples G1 to G5 had a lower rating in comprehensive evaluation than that of the oil foundations of Examples G1 to G3.
  • the dextrin fatty acid esters of Examples 1, 3, and 4 and Comparative Examples 2, 3, and 7 to 9 were respectively used as the component (1) in Examples H1 to G3 and Comparative Examples H1 to H6.
  • the components (1) to (10) were dissolved by warming to obtain a beauty oil.
  • the beauty oils of Examples H1 to H3 were rated as a double circle for all of the items except for a circle for transparency. In this respect, the transparency was reduced due to the materials including plant oils such as olive oil and avocado oil and did not impair the functions of the beauty oils by any means.
  • the beauty oils of Comparative Examples H1 to H5 were rated as a circle, a triangle, or an x-mark for all of the items except that the beauty oil of Comparative Example H1 was rated as a double circle for preservation stability. Thus, the beauty oils of Comparative Examples H1 to H5 had a lower rating in comprehensive evaluation than that of the beauty oils of Examples H1 to H3.
  • the dextrin fatty acid esters of Examples 1, 3, and 4 and Comparative Examples 2, 3, and 7 to 9 were respectively used as the component (1) in Examples J1 to J3 and Comparative Examples J1 to J6.
  • the components (1) to (10) were dissolved by warming to obtain a liquid rouge.
  • the liquid rouges of Examples J1 to J3 were rated as a double circle for all of the items.
  • the liquid rouges of Comparative Examples J1 to J5 were rated as a circle, a triangle, or an x-mark for all of the items except that the liquid rouge of Comparative Example J1 was rated as a double circle for preservation stability.
  • the liquid rouges of Comparative Examples J1 to J5 had a lower rating in comprehensive evaluation than that of the liquid rouges of Examples J1 to J3.
  • Microcrystalline wax (Multiwax W-445 manufactured by Sonneborn, LLC)
  • Trimethylsiloxysilicic acid (X-21-5595 manufactured by Shin-Etsu Chemical Co., Ltd.)
  • the dextrin fatty acid esters of Examples 1, 3, and 4 and Comparative Examples 2, 3, and 7 to 9 were respectively used as the component (1) in Examples K1 to K3 and Comparative Examples K1 to K6.
  • the components (1) to (4) were dissolved by warming. To the solution, the components (5) to (9) were added, warmed, and uniformly dispersed. Then, the dispersion was cooled to obtain a gel eyeliner.
  • the gel eyeliners of Examples K1 to K3 were rated as a double circle for all of the items.
  • the gel eyeliners of Comparative Examples K1 to K5 were rated as a circle, a triangle, or an x-mark for all of the items except that the gel eyeliner of Comparative Example K1 was rated as a double circle for preservation stability.
  • the gel eyeliners of Comparative Examples K1 to K5 had a lower rating in comprehensive evaluation than that of the gel eyeliners of Examples K1 to K3.
  • the present embodiment provides the following advantages.
  • the dextrin in the dextrin fatty acid ester has an average degree of glycopolymerization of 3 or more and 100 or less, whereby the incapability of obtaining a soft gel is prevented while excessive reduction in the solubility of the dextrin fatty acid ester in an oil is also prevented.
  • the linear saturated fatty acid bonded to the dextrin has 14 or more and 18 or less carbon atoms, whereby the restoring force imparted to cosmetics is enhanced.
  • the branched saturated fatty acid has 14 or more and 18 or less carbon atoms, whereby the reaction efficiency between the dextrin and the fatty acid is improved while adequate viscosity properties are imparted to an oil.
  • the molar fraction of the linear saturated fatty acid in the fatty acid is 0.75 or more and 0.95 or less, whereby a gelled oil has a smooth state while the restoring force is improved.
  • the average degree of substitution of the fatty acid per glucose unit is 1.5 or more and 2.0 or less, whereby the syneresis properties are reduced.
  • a cosmetic containing this dextrin fatty acid ester has both of an excellent restoring force and low syneresis properties and therefore reduces its viscosity by the application of a force in order to take out the cosmetic from a preservation container containing the cosmetic. Therefore, the cosmetic, even if highly viscous, is easily taken out thereof. Also, the cosmetic resists flowing down when taken up on the palm or put on the face or the body. Furthermore, preservation stability is improved because syneresis is suppressed during preservation. Moreover, cosmetics, such as lip glosses or mascaras, for forming a cosmetic film on the skin, eyelashes, etc. reduce their viscosities by the application of a force and therefore spread well and are easy to apply. This facilitates uniform application of the cosmetics. At the completion of application of the cosmetics, the cosmetics restore their viscosities. Therefore, the cosmetics resist flowing down and thus easily maintain the cosmetic film state of completion of application.
  • the average degree of glycopolymerization of the dextrin in the dextrin fatty acid ester is 3 or more and 50 or less, whereby a soft gel is obtained while the solubility of the dextrin fatty acid ester in an oil is enhanced.
  • the molar fraction of the linear saturated fatty acid in the fatty acid of the dextrin fatty acid ester is in the range of 0.8 or more and 0.9 or less, and the average degree of substitution of the fatty acid per glucose unit is 1.65 or more and 1.80 or less, whereby the restoring force of an oil containing the dextrin fatty acid ester is improved while the syneresis properties is reduced.
  • the linear saturated fatty acid is palmitic acid having 16 carbon atoms
  • the branched saturated fatty acid is isopalmitic acid having 16 carbon atoms, whereby both of oil-gelling power and transparency are particularly excellent.
  • the dextrin fatty acid ester having properties of conferring an excellent restoring force imparts a restoring force to a volatile hydrocarbon oil having a low viscosity even if its content is small with respect to the volatile hydrocarbon oil. Therefore, the dextrin fatty acid ester particularly exerts effects in such a way that the degree of freedom of cosmetic formulation is enhanced.

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WO2023164418A1 (en) * 2022-02-23 2023-08-31 Integrity Bio-Chemicals, Llc Emulsifying compositions comprising fatty acid or fatty ester reaction products of saccharide polymers formulated with mixed surfactants

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KR102463230B1 (ko) * 2015-09-30 2022-11-04 (주)아모레퍼시픽 투명한 액상 유분산 제형의 아이메이크업 조성물
JP6400799B2 (ja) * 2017-07-19 2018-10-03 千葉製粉株式会社 化粧料
CN112399845B (zh) * 2018-07-10 2023-12-29 株式会社资生堂 化妆品
JP7144841B2 (ja) * 2018-09-27 2022-09-30 株式会社アリミノ 毛髪用バーム
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CN111154004A (zh) * 2020-01-17 2020-05-15 勤生高新材料科技(广州)有限公司 糊精棕榈酸酯的制备方法
WO2021209621A1 (en) * 2020-04-17 2021-10-21 Total Marketing Services Monomers, oligomers and polymers of sugars functionalized with straight or branched fatty acids and derivatives, their compositions and uses
JP7437827B1 (ja) 2023-03-30 2024-02-26 千葉製粉株式会社 デキストリン脂肪酸エステルの製造方法

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KR102670062B1 (ko) 2024-05-29

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