JP7516054B2 - Oil-in-water emulsion cosmetics - Google Patents
Oil-in-water emulsion cosmetics Download PDFInfo
- Publication number
- JP7516054B2 JP7516054B2 JP2020007999A JP2020007999A JP7516054B2 JP 7516054 B2 JP7516054 B2 JP 7516054B2 JP 2020007999 A JP2020007999 A JP 2020007999A JP 2020007999 A JP2020007999 A JP 2020007999A JP 7516054 B2 JP7516054 B2 JP 7516054B2
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- JP
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- Prior art keywords
- water
- cosmetic
- oil
- preparation according
- amount
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000002537 cosmetic Substances 0.000 title claims description 70
- 239000007764 o/w emulsion Substances 0.000 title claims description 17
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- OQILCOQZDHPEAZ-UHFFFAOYSA-N octyl palmitate Chemical compound CCCCCCCCCCCCCCCC(=O)OCCCCCCCC OQILCOQZDHPEAZ-UHFFFAOYSA-N 0.000 description 3
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- RJDOZRNNYVAULJ-UHFFFAOYSA-L [O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[F-].[F-].[Mg++].[Mg++].[Mg++].[Al+3].[Si+4].[Si+4].[Si+4].[K+] Chemical compound [O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[F-].[F-].[Mg++].[Mg++].[Mg++].[Al+3].[Si+4].[Si+4].[Si+4].[K+] RJDOZRNNYVAULJ-UHFFFAOYSA-L 0.000 description 1
- 235000010489 acacia gum Nutrition 0.000 description 1
- 239000000205 acacia gum Substances 0.000 description 1
- 239000008272 agar Substances 0.000 description 1
- 235000010419 agar Nutrition 0.000 description 1
- 235000010443 alginic acid Nutrition 0.000 description 1
- 229920000615 alginic acid Polymers 0.000 description 1
- 239000000783 alginic acid Substances 0.000 description 1
- 229960001126 alginic acid Drugs 0.000 description 1
- 150000004781 alginic acids Chemical class 0.000 description 1
- 235000012211 aluminium silicate Nutrition 0.000 description 1
- SNAAJJQQZSMGQD-UHFFFAOYSA-N aluminum magnesium Chemical compound [Mg].[Al] SNAAJJQQZSMGQD-UHFFFAOYSA-N 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 239000003125 aqueous solvent Substances 0.000 description 1
- BQMNFPBUAQPINY-UHFFFAOYSA-N azane;2-methyl-2-(prop-2-enoylamino)propane-1-sulfonic acid Chemical compound [NH4+].[O-]S(=O)(=O)CC(C)(C)NC(=O)C=C BQMNFPBUAQPINY-UHFFFAOYSA-N 0.000 description 1
- 229910052916 barium silicate Inorganic materials 0.000 description 1
- HMOQPOVBDRFNIU-UHFFFAOYSA-N barium(2+);dioxido(oxo)silane Chemical compound [Ba+2].[O-][Si]([O-])=O HMOQPOVBDRFNIU-UHFFFAOYSA-N 0.000 description 1
- 229940116224 behenate Drugs 0.000 description 1
- UKMSUNONTOPOIO-UHFFFAOYSA-M behenate Chemical compound CCCCCCCCCCCCCCCCCCCCCC([O-])=O UKMSUNONTOPOIO-UHFFFAOYSA-M 0.000 description 1
- XVAMCHGMPYWHNL-UHFFFAOYSA-N bemotrizinol Chemical compound OC1=CC(OCC(CC)CCCC)=CC=C1C1=NC(C=2C=CC(OC)=CC=2)=NC(C=2C(=CC(OCC(CC)CCCC)=CC=2)O)=N1 XVAMCHGMPYWHNL-UHFFFAOYSA-N 0.000 description 1
- 239000000440 bentonite Substances 0.000 description 1
- 229910000278 bentonite Inorganic materials 0.000 description 1
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 1
- 235000010233 benzoic acid Nutrition 0.000 description 1
- 150000008366 benzophenones Chemical class 0.000 description 1
- 125000003236 benzoyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C(*)=O 0.000 description 1
- 229910052626 biotite Inorganic materials 0.000 description 1
- HGKOWIQVWAQWDS-UHFFFAOYSA-N bis(16-methylheptadecyl) 2-hydroxybutanedioate Chemical compound CC(C)CCCCCCCCCCCCCCCOC(=O)CC(O)C(=O)OCCCCCCCCCCCCCCCC(C)C HGKOWIQVWAQWDS-UHFFFAOYSA-N 0.000 description 1
- WMNULTDOANGXRT-UHFFFAOYSA-N bis(2-ethylhexyl) butanedioate Chemical compound CCCCC(CC)COC(=O)CCC(=O)OCC(CC)CCCC WMNULTDOANGXRT-UHFFFAOYSA-N 0.000 description 1
- FQUNFJULCYSSOP-UHFFFAOYSA-N bisoctrizole Chemical compound N1=C2C=CC=CC2=NN1C1=CC(C(C)(C)CC(C)(C)C)=CC(CC=2C(=C(C=C(C=2)C(C)(C)CC(C)(C)C)N2N=C3C=CC=CC3=N2)O)=C1O FQUNFJULCYSSOP-UHFFFAOYSA-N 0.000 description 1
- 239000002981 blocking agent Substances 0.000 description 1
- 235000019437 butane-1,3-diol Nutrition 0.000 description 1
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 239000000378 calcium silicate Substances 0.000 description 1
- 229910052918 calcium silicate Inorganic materials 0.000 description 1
- OYACROKNLOSFPA-UHFFFAOYSA-N calcium;dioxido(oxo)silane Chemical compound [Ca+2].[O-][Si]([O-])=O OYACROKNLOSFPA-UHFFFAOYSA-N 0.000 description 1
- 235000010418 carrageenan Nutrition 0.000 description 1
- 239000000679 carrageenan Substances 0.000 description 1
- 229920001525 carrageenan Polymers 0.000 description 1
- 229940113118 carrageenan Drugs 0.000 description 1
- 239000005018 casein Substances 0.000 description 1
- BECPQYXYKAMYBN-UHFFFAOYSA-N casein, tech. Chemical compound NCCCCC(C(O)=O)N=C(O)C(CC(O)=O)N=C(O)C(CCC(O)=N)N=C(O)C(CC(C)C)N=C(O)C(CCC(O)=O)N=C(O)C(CC(O)=O)N=C(O)C(CCC(O)=O)N=C(O)C(C(C)O)N=C(O)C(CCC(O)=N)N=C(O)C(CCC(O)=N)N=C(O)C(CCC(O)=N)N=C(O)C(CCC(O)=O)N=C(O)C(CCC(O)=O)N=C(O)C(COP(O)(O)=O)N=C(O)C(CCC(O)=N)N=C(O)C(N)CC1=CC=CC=C1 BECPQYXYKAMYBN-UHFFFAOYSA-N 0.000 description 1
- 235000021240 caseins Nutrition 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 229920001436 collagen Polymers 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 239000000306 component Substances 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 239000008406 cosmetic ingredient Substances 0.000 description 1
- 239000006071 cream Substances 0.000 description 1
- 235000014113 dietary fatty acids Nutrition 0.000 description 1
- FDATWRLUYRHCJE-UHFFFAOYSA-N diethylamino hydroxybenzoyl hexyl benzoate Chemical compound CCCCCCOC(=O)C1=CC=CC=C1C(=O)C1=CC=C(N(CC)CC)C=C1O FDATWRLUYRHCJE-UHFFFAOYSA-N 0.000 description 1
- 229960001630 diethylamino hydroxybenzoyl hexyl benzoate Drugs 0.000 description 1
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 description 1
- 229940031569 diisopropyl sebacate Drugs 0.000 description 1
- 125000000118 dimethyl group Chemical group [H]C([H])([H])* 0.000 description 1
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 1
- YGANSGVIUGARFR-UHFFFAOYSA-N dipotassium dioxosilane oxo(oxoalumanyloxy)alumane oxygen(2-) Chemical compound [O--].[K+].[K+].O=[Si]=O.O=[Al]O[Al]=O YGANSGVIUGARFR-UHFFFAOYSA-N 0.000 description 1
- XFKBBSZEQRFVSL-UHFFFAOYSA-N dipropan-2-yl decanedioate Chemical compound CC(C)OC(=O)CCCCCCCCC(=O)OC(C)C XFKBBSZEQRFVSL-UHFFFAOYSA-N 0.000 description 1
- 239000012153 distilled water Substances 0.000 description 1
- GMSCBRSQMRDRCD-UHFFFAOYSA-N dodecyl 2-methylprop-2-enoate Chemical compound CCCCCCCCCCCCOC(=O)C(C)=C GMSCBRSQMRDRCD-UHFFFAOYSA-N 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 230000001804 emulsifying effect Effects 0.000 description 1
- 229940009714 erythritol Drugs 0.000 description 1
- UNXHWFMMPAWVPI-ZXZARUISSA-N erythritol Chemical compound OC[C@H](O)[C@H](O)CO UNXHWFMMPAWVPI-ZXZARUISSA-N 0.000 description 1
- 235000019414 erythritol Nutrition 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 235000019325 ethyl cellulose Nutrition 0.000 description 1
- 229920001249 ethyl cellulose Polymers 0.000 description 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- 125000000816 ethylene group Chemical group [H]C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- GJQLBGWSDGMZKM-UHFFFAOYSA-N ethylhexyl palmitate Chemical compound CCCCCCCCCCCCCCCC(=O)OC(CC)CCCCC GJQLBGWSDGMZKM-UHFFFAOYSA-N 0.000 description 1
- 229940100524 ethylhexylglycerin Drugs 0.000 description 1
- 239000000194 fatty acid Substances 0.000 description 1
- 229930195729 fatty acid Natural products 0.000 description 1
- 150000004665 fatty acids Chemical class 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 229920000159 gelatin Polymers 0.000 description 1
- 239000008273 gelatin Substances 0.000 description 1
- 235000019322 gelatine Nutrition 0.000 description 1
- 235000011852 gelatine desserts Nutrition 0.000 description 1
- 125000003976 glyceryl group Chemical group [H]C([*])([H])C(O[H])([H])C(O[H])([H])[H] 0.000 description 1
- XJNUECKWDBNFJV-UHFFFAOYSA-N hexadecyl 2-ethylhexanoate Chemical compound CCCCCCCCCCCCCCCCOC(=O)C(CC)CCCC XJNUECKWDBNFJV-UHFFFAOYSA-N 0.000 description 1
- DWMMZQMXUWUJME-UHFFFAOYSA-N hexadecyl octanoate Chemical compound CCCCCCCCCCCCCCCCOC(=O)CCCCCCC DWMMZQMXUWUJME-UHFFFAOYSA-N 0.000 description 1
- 125000004836 hexamethylene group Chemical group [H]C([H])([*:2])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[*:1] 0.000 description 1
- 229940100463 hexyl laurate Drugs 0.000 description 1
- 229960004881 homosalate Drugs 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 1
- 229910052588 hydroxylapatite Inorganic materials 0.000 description 1
- 239000001863 hydroxypropyl cellulose Substances 0.000 description 1
- 235000010977 hydroxypropyl cellulose Nutrition 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 229940078545 isocetyl stearate Drugs 0.000 description 1
- IQPQWNKOIGAROB-UHFFFAOYSA-N isocyanate group Chemical group [N-]=C=O IQPQWNKOIGAROB-UHFFFAOYSA-N 0.000 description 1
- 229940093629 isopropyl isostearate Drugs 0.000 description 1
- XUGNVMKQXJXZCD-UHFFFAOYSA-N isopropyl palmitate Chemical compound CCCCCCCCCCCCCCCC(=O)OC(C)C XUGNVMKQXJXZCD-UHFFFAOYSA-N 0.000 description 1
- 229940119170 jojoba wax Drugs 0.000 description 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
- 229940094522 laponite Drugs 0.000 description 1
- 229940071085 lauroyl glutamate Drugs 0.000 description 1
- 125000005647 linker group Chemical group 0.000 description 1
- XCOBTUNSZUJCDH-UHFFFAOYSA-B lithium magnesium sodium silicate Chemical compound [Li+].[Li+].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[Na+].[Na+].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].O1[Si](O2)([O-])O[Si]3([O-])O[Si]1([O-])O[Si]2([O-])O3.O1[Si](O2)([O-])O[Si]3([O-])O[Si]1([O-])O[Si]2([O-])O3.O1[Si](O2)([O-])O[Si]3([O-])O[Si]1([O-])O[Si]2([O-])O3.O1[Si](O2)([O-])O[Si]3([O-])O[Si]1([O-])O[Si]2([O-])O3.O1[Si](O2)([O-])O[Si]3([O-])O[Si]1([O-])O[Si]2([O-])O3.O1[Si](O2)([O-])O[Si]3([O-])O[Si]1([O-])O[Si]2([O-])O3 XCOBTUNSZUJCDH-UHFFFAOYSA-B 0.000 description 1
- 229910001947 lithium oxide Inorganic materials 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 description 1
- 239000001095 magnesium carbonate Substances 0.000 description 1
- 229910000021 magnesium carbonate Inorganic materials 0.000 description 1
- HCWCAKKEBCNQJP-UHFFFAOYSA-N magnesium orthosilicate Chemical compound [Mg+2].[Mg+2].[O-][Si]([O-])([O-])[O-] HCWCAKKEBCNQJP-UHFFFAOYSA-N 0.000 description 1
- 239000000391 magnesium silicate Substances 0.000 description 1
- 229910052919 magnesium silicate Inorganic materials 0.000 description 1
- 235000019792 magnesium silicate Nutrition 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229920000609 methyl cellulose Polymers 0.000 description 1
- 239000001923 methylcellulose Substances 0.000 description 1
- 235000010981 methylcellulose Nutrition 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 230000001333 moisturizer Effects 0.000 description 1
- 230000003020 moisturizing effect Effects 0.000 description 1
- 229910052627 muscovite Inorganic materials 0.000 description 1
- 125000001421 myristyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 229940078812 myristyl myristate Drugs 0.000 description 1
- 239000002736 nonionic surfactant Substances 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- KSCKTBJJRVPGKM-UHFFFAOYSA-N octan-1-olate;titanium(4+) Chemical compound [Ti+4].CCCCCCCC[O-].CCCCCCCC[O-].CCCCCCCC[O-].CCCCCCCC[O-] KSCKTBJJRVPGKM-UHFFFAOYSA-N 0.000 description 1
- 229960001679 octinoxate Drugs 0.000 description 1
- 229960000601 octocrylene Drugs 0.000 description 1
- 229920001277 pectin Polymers 0.000 description 1
- 239000001814 pectin Substances 0.000 description 1
- 235000010987 pectin Nutrition 0.000 description 1
- XYJRXVWERLGGKC-UHFFFAOYSA-D pentacalcium;hydroxide;triphosphate Chemical compound [OH-].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O XYJRXVWERLGGKC-UHFFFAOYSA-D 0.000 description 1
- 229910052628 phlogopite Inorganic materials 0.000 description 1
- 150000003904 phospholipids Chemical class 0.000 description 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 1
- 229920002401 polyacrylamide Polymers 0.000 description 1
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 1
- 239000004926 polymethyl methacrylate Substances 0.000 description 1
- 229920005591 polysilicon Polymers 0.000 description 1
- 239000003755 preservative agent Substances 0.000 description 1
- NEOZOXKVMDBOSG-UHFFFAOYSA-N propan-2-yl 16-methylheptadecanoate Chemical compound CC(C)CCCCCCCCCCCCCCC(=O)OC(C)C NEOZOXKVMDBOSG-UHFFFAOYSA-N 0.000 description 1
- ULWHHBHJGPPBCO-UHFFFAOYSA-N propane-1,1-diol Chemical compound CCC(O)O ULWHHBHJGPPBCO-UHFFFAOYSA-N 0.000 description 1
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 235000019423 pullulan Nutrition 0.000 description 1
- 229940058287 salicylic acid derivative anticestodals Drugs 0.000 description 1
- 150000003872 salicylic acid derivatives Chemical class 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 229920002545 silicone oil Polymers 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 235000010413 sodium alginate Nutrition 0.000 description 1
- 239000000661 sodium alginate Substances 0.000 description 1
- 229940005550 sodium alginate Drugs 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 229910052917 strontium silicate Inorganic materials 0.000 description 1
- QSQXISIULMTHLV-UHFFFAOYSA-N strontium;dioxido(oxo)silane Chemical compound [Sr+2].[O-][Si]([O-])=O QSQXISIULMTHLV-UHFFFAOYSA-N 0.000 description 1
- 125000001424 substituent group Chemical group 0.000 description 1
- 230000037072 sun protection Effects 0.000 description 1
- 230000000475 sunscreen effect Effects 0.000 description 1
- 239000000516 sunscreening agent Substances 0.000 description 1
- 229920000247 superabsorbent polymer Polymers 0.000 description 1
- 229940104261 taurate Drugs 0.000 description 1
- XOAAWQZATWQOTB-UHFFFAOYSA-N taurine Chemical compound NCCS(O)(=O)=O XOAAWQZATWQOTB-UHFFFAOYSA-N 0.000 description 1
- DZKXJUASMGQEMA-UHFFFAOYSA-N tetradecyl tetradecanoate Chemical compound CCCCCCCCCCCCCCOC(=O)CCCCCCCCCCCCC DZKXJUASMGQEMA-UHFFFAOYSA-N 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- 230000000699 topical effect Effects 0.000 description 1
- 150000003918 triazines Chemical class 0.000 description 1
- PBYZMCDFOULPGH-UHFFFAOYSA-N tungstate Chemical compound [O-][W]([O-])(=O)=O PBYZMCDFOULPGH-UHFFFAOYSA-N 0.000 description 1
- 239000010455 vermiculite Substances 0.000 description 1
- 229910052902 vermiculite Inorganic materials 0.000 description 1
- 235000019354 vermiculite Nutrition 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- 229920003169 water-soluble polymer Polymers 0.000 description 1
- 239000000230 xanthan gum Substances 0.000 description 1
- 235000010493 xanthan gum Nutrition 0.000 description 1
- 229920001285 xanthan gum Polymers 0.000 description 1
- 229940082509 xanthan gum Drugs 0.000 description 1
- 239000010457 zeolite Substances 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
- UHVMMEOXYDMDKI-JKYCWFKZSA-L zinc;1-(5-cyanopyridin-2-yl)-3-[(1s,2s)-2-(6-fluoro-2-hydroxy-3-propanoylphenyl)cyclopropyl]urea;diacetate Chemical compound [Zn+2].CC([O-])=O.CC([O-])=O.CCC(=O)C1=CC=C(F)C([C@H]2[C@H](C2)NC(=O)NC=2N=CC(=CC=2)C#N)=C1O UHVMMEOXYDMDKI-JKYCWFKZSA-L 0.000 description 1
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
- A61K8/30—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
- A61K8/73—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
- A61K8/72—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds
- A61K8/81—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Birds (AREA)
- Epidemiology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Emergency Medicine (AREA)
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Cosmetics (AREA)
Description
本発明は、所定量の極性油を配合しながら安定で、べたつきが無くみずみずしい使用感触を有する水中油型乳化化粧料に関する。より詳細には、極性油を比較的多く配合しても乳化安定性に優れ、べたつきが無く、なおかつ塗布後に崩れて水が溢れだすようなみずみずしい使用感触を与えることのできる水中油型乳化化粧料に関する。 The present invention relates to an oil-in-water emulsion cosmetic that is stable, non-sticky, and has a fresh feel when used, even when it contains a specified amount of polar oil. More specifically, the present invention relates to an oil-in-water emulsion cosmetic that has excellent emulsion stability and is non-sticky even when it contains a relatively large amount of polar oil, and that can give a fresh feel when used, as if the cosmetic crumbles and overflows with water after application.
水中油型乳化基剤は、外相（連続相）即ち最初に肌に触れる相が水相であることから、みずみずしい使用感が得られる化粧料基剤として好まれている。このような水中油型乳化基剤の特性を生かしつつ、更に改良して魅力ある化粧料とする試みも種々なされている。 Oil-in-water emulsion bases are popular as cosmetic bases that provide a fresh feel when used, because the external phase (continuous phase), i.e., the phase that first comes into contact with the skin, is the water phase. Various attempts have been made to take advantage of the properties of these oil-in-water emulsion bases and further improve them to create attractive cosmetics.
例えば、特許文献１に記載された化粧料基剤は、シャーベット状の外観が視覚的に清涼感を与え、なおかつ肌に塗布すると瞬時に柔らかくはじけて崩れ水が溢れ出すような独特の感触（水崩れ感）を与えることができる。特許文献１の化粧料基剤は、自重の６００～７００倍の水を吸収できる超吸水性ポリマーであるアクリル酸Ｎａグラフトデンプンを０．１５～０．６質量％配合し、共配合されるポリオキシアルキレン鎖を有する会合性増粘剤との合計配合量を０．５～１．５質量％の範囲とすることにより、独特の外観及び使用感を発揮する。このような独特の外観及び使用感を生かすには「水性基剤」とするのが好ましいとされている。 For example, the cosmetic base described in Patent Document 1 has a sherbet-like appearance that gives a visually refreshing feeling, and when applied to the skin, it instantly softens and crumbles, causing water to overflow and giving a unique feel (a feeling of water crumbling). The cosmetic base in Patent Document 1 contains 0.15 to 0.6 mass% of sodium acrylate grafted starch, a superabsorbent polymer that can absorb 600 to 700 times its own weight in water, and by setting the total amount of the co-blended associative thickener having a polyoxyalkylene chain in the range of 0.5 to 1.5 mass%, it exhibits a unique appearance and feel when used. It is said that an "aqueous base" is preferable to make the most of this unique appearance and feel when used.
一方、みずみずしい感触を与える水中油型乳化基剤に油分を配合することにより、コクのある塗布感や肌のツヤ感ハリ感を付与することができることが知られている。しかし、油分、特に極性油を増量すると、べたつきを生じ乳化安定性が低下する傾向がある。 On the other hand, it is known that blending oil into an oil-in-water emulsion base, which gives a fresh feel, can give a rich application feel and a glossy, firm feel to the skin. However, increasing the amount of oil, especially polar oil, tends to cause stickiness and reduce emulsion stability.
特許文献２には、リン脂質及びアクリル酸塩とアクリル酸ジメチルタウリン酸塩の共重合体を含有する水中油型化粧料が開示され、常温で固形の油剤を含有しなくても、コクのある塗布感を有し、塗布時に延びが良く、べたつきが無くさっぱりした使用感が得られるとされている。しかし、吸水性ポリマーも会合性増粘剤も含有していないので、特許文献１のような水崩れ感は得られない。 Patent Document 2 discloses an oil-in-water cosmetic that contains phospholipids and a copolymer of acrylate and dimethyl acrylate taurate, and is said to have a rich application feel, spread well when applied, and provide a refreshing feel without stickiness, even though it does not contain an oil agent that is solid at room temperature. However, because it does not contain a water-absorbent polymer or an associative thickener, it does not have the water-breaking feel of Patent Document 1.
特許文献３には、高吸収性ポリマーおよび有機ＵＶ遮断剤（油溶性紫外線吸収剤）を含むエマルジョンの形態の化粧料組成物では、べたつきが抑制されたと記載されている。特許文献３で用いられている高吸収性ポリマーは、吸収可能な水性流体（蒸留水）の量で定義された吸水性ポリマーと解されるが、吸水性ポリマーの吸水量や共配合されている油分量に鑑みれば、特許文献３の化粧料組成物に単に会合性増粘剤を添加しても、特許文献１のようなシャーベット状の外観や水崩れ感は得られないと推測される。 Patent Document 3 describes that stickiness is suppressed in a cosmetic composition in the form of an emulsion containing a highly absorbent polymer and an organic UV blocking agent (oil-soluble ultraviolet absorber). The highly absorbent polymer used in Patent Document 3 is understood to be a water-absorbing polymer defined by the amount of aqueous fluid (distilled water) it can absorb, but in consideration of the water absorption capacity of the water-absorbing polymer and the amount of oil co-blended, it is presumed that simply adding an associative thickener to the cosmetic composition of Patent Document 3 will not result in a sherbet-like appearance or water-breaking sensation like that of Patent Document 1.
本発明は、前記技術の現状に鑑み、肌に塗布する際には適度なコク感がありながら、その後に崩れて水が溢れだすようなみずみずしい感触を与えることのできる水中油型乳化化粧料であって、なおかつ乳化安定性にも優れた水中油型乳化化粧料を提供することを課題とする。 In view of the current state of the art, the present invention aims to provide an oil-in-water emulsion cosmetic that has a moderate richness when applied to the skin, but that subsequently crumbles and gives a fresh, watery sensation, and that also has excellent emulsion stability.
本発明者は、前記の課題を解決すべく鋭意研究を重ねた結果、会合性増粘剤及び吸水性ポリマーを含有する水中油型乳化化粧料に所定量の極性油を配合するとともに、前記吸水性ポリマーの吸水量を所定範囲内に調整することにより、極性油を安定に保持できるのみならず、べたつきが無く、塗布時には適度なコク感がありながら、その後に崩れて水が溢れだすようなみずみずしい感触を与え得ることを見出し、本発明を完成するに至った。 As a result of intensive research conducted by the inventors to solve the above problems, they discovered that by blending a specified amount of polar oil into an oil-in-water emulsion cosmetic containing an associative thickener and a water-absorbent polymer, and adjusting the water absorption of the water-absorbent polymer within a specified range, it is possible not only to stably retain the polar oil, but also to create a non-sticky cosmetic that has a moderate richness when applied, and then gives a fresh feeling as if the cosmetic crumbles and water overflows, thereby completing the present invention.
すなわち本発明は、
（Ａ）会合性増粘剤、
（Ｂ）吸水性ポリマー、及び
（Ｃ）極性油、を含有する水中油型乳化化粧料であって、
前記（Ｃ）極性油の配合量が化粧料全量に対して３～３０質量％であり、
前記（Ｂ）吸水性ポリマーの吸水率（Ｘ）とその配合量（Ｙ質量％）との積（Ｘ×Ｙ）が２０～７５の範囲内であることを特徴とする水中油型乳化化粧料を提供する。
That is, the present invention provides:
(A) an associative thickener,
An oil-in-water emulsion cosmetic comprising (B) a water-absorbent polymer and (C) a polar oil,
The blending amount of the (C) polar oil is 3 to 30 mass% based on the total amount of the cosmetic,
The present invention provides an oil-in-water emulsion cosmetic, characterized in that the product (X×Y) of the water absorption rate (X) of the water-absorbing polymer (B) and its blending amount (Y mass %) is within the range of 20 to 75.
本発明の水中油型乳化化粧料は、吸水性ポリマー及び会合性増粘剤を含有しているため、べたつきが無く、特許文献１の化粧料基剤のように、崩れて水が溢れだすようなみずみずしい使用感触がある。しかしながら、吸水性ポリマーの吸水量を制限し、かつ所定量の極性油を配合しているので、塗布する際には適度なコク感があり、塗布後に指や手などで押圧することにより化粧料内から水が飛び出すような感触を伴って肌上に水分が広がる感覚を与える。この使用感触を、本明細書では「くずれ感」と呼称する。本発明の化粧料で得られる「くずれ感」は、肌に塗布してから若干の間をおいてみずみずしさを感じる感触を意味し、特許文献１の化粧料で得られる「塗布すると瞬時にシャーベット状の化粧料が崩れて水が溢れだす感触（水崩れ感）」とは相違する。
また、本発明の水中油型乳化化粧料は、極性油として紫外線吸収剤などの油溶性薬剤を安定に保持できるので、独特のみずみずしい使用感触（くずれ感）と高い紫外線防御効果（高ＳＰＦ（Sun protection Factor））を併せ持ったスキンケア化粧料、例えばサンスクリーンとすることが可能である。
The oil-in-water emulsion cosmetic of the present invention contains a water-absorbent polymer and an associative thickener, and is not sticky, and has a fresh feel when used, as if it were crumbling and overflowing with water, like the cosmetic base of Patent Document 1. However, since the water absorption amount of the water-absorbent polymer is limited and a predetermined amount of polar oil is blended, the cosmetic base has a moderate richness when applied, and when pressed with a finger or hand after application, it gives a feeling of water spreading on the skin accompanied by a feeling of water spurting out from within the cosmetic. This feeling when used is referred to as a "feeling of crumbling" in this specification. The "feeling of crumbling" obtained with the cosmetic of the present invention means a feeling of freshness that is felt after a short time has elapsed after application to the skin, and is different from the "feeling of a sherbet-like cosmetic instantly crumbling and overflowing with water (feeling of water crumbling)" obtained with the cosmetic of Patent Document 1.
Furthermore, since the oil-in-water emulsion cosmetic of the present invention can stably retain oil-soluble drugs such as ultraviolet absorbents as polar oils, it is possible to produce a skin care cosmetic, for example a sunscreen, that combines a uniquely fresh feel when used (feeling of crumbling) with a high ultraviolet protection effect (high SPF (Sun protection Factor)).
本発明の水中油型乳化化粧料（以下、単に「化粧料」とも称する）は、（Ａ）会合性増粘剤、（Ｂ）吸水性ポリマー、及び（Ｃ）極性油を必須成分として含有する。 The oil-in-water emulsion cosmetic of the present invention (hereinafter also simply referred to as "cosmetic") contains (A) an associative thickener, (B) a water-absorbent polymer, and (C) a polar oil as essential components.
（Ａ）会合性増粘剤
「会合性増粘剤」とは、水溶性モノマーからなる親水性部分と疎水性モノマーからなる疎水性部分を有する共重合体であり、水性溶媒中で疎水性相互作用により会合することで、あたかも物理的に架橋した巨大分子として振る舞うことによって系を増粘する作用を持つ増粘剤である（例えば、特開２０００－２３９１２０号公報の段落００１４等を参照）。
(A) Associative Thickener The term "associative thickener" refers to a copolymer having a hydrophilic portion made of a water-soluble monomer and a hydrophobic portion made of a hydrophobic monomer, and is a thickener that acts to thicken a system by associating with each other through hydrophobic interactions in an aqueous solvent and behaving as if they were physically crosslinked macromolecules (see, for example, paragraph 0014 of JP-A No. 2000-239120).
本発明における会合性増粘剤（Ａ成分）は、（Ａ－１）疎水変性ポリエーテルウレタン、（Ａ－２）疎水変性アルキルセルロース、及び（Ａ－３）ポリアクリレートクロスポリマーからなる群から選択される少なくとも１種とするのが好ましい。本発明にあっては、（Ａ－１）疎水変性ポリエーテルウレタン、（Ａ－２）疎水変性アルキルセルロース、及び（Ａ－３）ポリアクリレートクロスポリマーのいずれかに属する会合性増粘剤の１種または２種以上を用いてもよく、（Ａ－１）、（Ａ－２）及び（Ａ－３）の複数から２種以上を組み合わせて配合してもよい。 The associative thickener (component A) in the present invention is preferably at least one selected from the group consisting of (A-1) hydrophobically modified polyether urethane, (A-2) hydrophobically modified alkyl cellulose, and (A-3) polyacrylate crosspolymer. In the present invention, one or more associative thickeners belonging to any of (A-1) hydrophobically modified polyether urethane, (A-2) hydrophobically modified alkyl cellulose, and (A-3) polyacrylate crosspolymer may be used, and two or more of (A-1), (A-2), and (A-3) may be combined and blended.
（Ａ－１）疎水変性ポリエーテルウレタン
本発明で用いられる疎水変性ポリエーテルウレタン（Ａ－１成分）としては、下記の一般式（１）：
このウレタン型ポリマーは、上記の（Ｉ）～（ＩＶ）の化合物を反応させて得られるものである。具体的には（Ｉ）、（ＩＩ）及び（ＩＩＩ）の化合物が各々含有する水酸基と、（ＩＶ）が含有するイソシアネート基とが反応する。水酸基を有する化合物が３種類あり、そのうち２種類が２価であるため、得られるポリマーは複雑な構造になり、適切な一般式で表すことができない。 This urethane type polymer is obtained by reacting the above compounds (I) to (IV). Specifically, the hydroxyl groups contained in compounds (I), (II), and (III) react with the isocyanate group contained in compound (IV). Since there are three types of compounds with hydroxyl groups, two of which are divalent, the resulting polymer has a complex structure and cannot be expressed by a suitable general formula.
このウレタン型ポリマーの製造方法は、各々の化合物を一括で反応させても分割して反応させてもよく、４つの化合物が反応すれば特に規定されない。しかし、イソシアネート化合物（ＩＶ）が完全に反応した後に（Ｉ）～（ＩＩＩ）のいずれかの化合物を反応系内に入れても反応しないため、（Ｉ）～（ＩＩＩ）の化合物を予め混合させ、そこにイソシアネート化合物（ＩＶ）を添加して反応させることが好ましい。具体的には、（Ｉ）～（ＩＩＩ）の化合物を反応系内に入れて４０～１００℃、好ましくは６０～８０℃で溶融混合し、同温度を保持したままイソシアネート化合物（ＩＶ）を反応系内に添加して反応させる。その後、反応が完了するまで３０分～３時間同温度で熟成させればよい。 The method for producing this urethane-type polymer is not particularly limited as long as the four compounds react together or in separate reactions. However, if any of the compounds (I) to (III) are added to the reaction system after the isocyanate compound (IV) has completely reacted, they will not react. Therefore, it is preferable to mix the compounds (I) to (III) in advance and then add the isocyanate compound (IV) to the mixture to react. Specifically, the compounds (I) to (III) are placed in the reaction system and melt-mixed at 40 to 100°C, preferably 60 to 80°C, and while maintaining the same temperature, the isocyanate compound (IV) is added to the reaction system and reacted. The mixture is then allowed to mature at the same temperature for 30 minutes to 3 hours until the reaction is complete.
上記反応に際し、各成分の配合比は特に規定されないが、粘性調整剤としての機能が良好になること及び反応を制御しやすいことから、ポリエチレングリコール（ＩＩ）１０モルに対して、モノヒドロキシ化合物（Ｉ）が１０～３０モル、モノグリセリルエーテル化合物（ＩＩＩ）が５～２０モル及びイソシアネート化合物（ＩＶ）が２０～５０モルであることが好ましく、ポリエチレングリコール（ＩＩ）１０モルに対して、モノヒドロキシ化合物（Ｉ）が１５～２５モル、モノグリセリルエーテル化合物（ＩＩＩ）が８～１５モル及びイソシアネート化合物（ＩＶ）が２５～４０モルであることがより好ましい。
このウレタン型ポリマーの詳細については、特許第６１５９７３８号公報に記載されている。
In the above reaction, the compounding ratio of each component is not particularly limited, but in order to improve the function as a viscosity adjuster and to easily control the reaction, it is preferable that the monohydroxy compound (I) is 10 to 30 moles, the monoglyceryl ether compound (III) is 5 to 20 moles, and the isocyanate compound (IV) is 20 to 50 moles relative to 10 moles of polyethylene glycol (II), and it is more preferable that the monohydroxy compound (I) is 15 to 25 moles, the monoglyceryl ether compound (III) is 8 to 15 moles, and the isocyanate compound (IV) is 25 to 40 moles relative to 10 moles of polyethylene glycol (II).
Details of this urethane type polymer are described in Japanese Patent No. 6,159,738.
本発明における疎水変性ポリエーテルウレタン（Ａ－１成分）としては、前記モノヒドロキシ化合物（Ｉ）がテトラデシルオクタデカノールのポリエチレングリコールエーテル（テトラデシルオクタデセス－１００）、前記ポリエチレングリコール（ＩＩ）がＰＥＧ－２４０、前記モノグリセリルエーテル化合物（ＩＩＩ）がエチルヘキシルグリセリン、前記イソシアネート化合物（ＩＶ）がヘキサメチレンジイソシアネート（ＨＤＩ）である共重合体が好ましい。当該共重合体は、化粧品成分表示名称で「ポリウレタン－５９」（INCI名：Polyurethane-59）と称される。ポリウレタン－５９は市販品を使用してもよく、例えば、ＡＤＥＫＡ社製の「アデカノールＧＴ－９３０」が好ましく用いられる。 The hydrophobically modified polyether urethane (A-1 component) in the present invention is preferably a copolymer in which the monohydroxy compound (I) is a polyethylene glycol ether of tetradecyl octadecanol (tetradecyl octadeceth-100), the polyethylene glycol (II) is PEG-240, the monoglyceryl ether compound (III) is ethylhexylglycerin, and the isocyanate compound (IV) is hexamethylene diisocyanate (HDI). This copolymer is called "Polyurethane-59" (INCI name: Polyurethane-59) in the cosmetic ingredient display name. A commercially available product may be used as Polyurethane-59, and for example, "Adekanol GT-930" manufactured by ADEKA Corporation is preferably used.
本発明における疎水変性ポリエーテルウレタン（Ａ－１成分）の別の例として、下記式（Ｉ）：
上記式（Ｉ）中、Ｒ１、Ｒ２およびＲ４は、それぞれ独立に炭素原子数２～４のアルキレン基、またはフェニルエチレン基を示す。好ましくは炭素原子数２～４のアルキレン基である。
Ｒ３はウレタン結合を有していてもよい炭素原子数１～１０のアルキレン基を示す。
Ｒ５は炭素原子数８～３６、好ましくは１２～２４の、直鎖、分岐または２級のアルキル基を示す。
ｍは２以上の数、好ましくは２である。ｈは１以上の数、好ましくは１である。ｋは１～５００の数、好ましくは１００～３００の数である。ｎは１～２００の数、好ましくは１０～１００の数である。
In the above formula (I), R 1 , R 2 and R 4 each independently represent an alkylene group having 2 to 4 carbon atoms or a phenylethylene group, preferably an alkylene group having 2 to 4 carbon atoms.
R3 represents an alkylene group having 1 to 10 carbon atoms which may have a urethane bond.
R5 represents a linear, branched or secondary alkyl group having 8 to 36 carbon atoms, preferably 12 to 24 carbon atoms.
m is a number of 2 or more, preferably 2. h is a number of 1 or more, preferably 1. k is a number from 1 to 500, preferably a number from 100 to 300. n is a number from 1 to 200, preferably a number from 10 to 100.
本発明で特に好ましい疎水変性ポリエーテルウレタンとしては、（ＰＥＧ－２４０／デシルテトラデセス－２０／ＨＤＩ）コポリマー（上記式（Ｉ）に示すコポリマーであって、Ｒ１＝エチル基、Ｒ２及びＲ４は各々エチレン基、Ｒ３＝ヘキサメチレン基、Ｒ５＝２－デシルテトラデシル基、ｈ＝１、ｍ＝２、ｋ＝１２０、ｎ＝２０であるもの）が挙げられる。当該コポリマーは、商品名「アデカノールＧＴ７００」又は「アデカノールＧＴ７３０」として株式会社ＡＤＥＫＡから市販されている。 A particularly preferred hydrophobically modified polyether urethane in the present invention is (PEG-240/Decyltetradeceth-20/HDI) copolymer (a copolymer represented by the above formula (I), in which R 1 = ethyl group, R 2 and R 4 are each an ethylene group, R 3 = hexamethylene group, R 5 = 2-decyltetradecyl group, h = 1, m = 2, k = 120, and n = 20). This copolymer is commercially available from ADEKA Corporation under the trade name "ADEKA NOL GT700" or "ADEKA NOL GT730".
（Ａ－２）疎水変性アルキルセルロース
本発明で用いられる疎水変性アルキルセルロース（Ａ－２成分）は、一般式（ＩＩ）で示されるものが好ましい。
(A-2) Hydrophobically Modified Alkyl Cellulose The hydrophobically modified alkyl cellulose (component A-2) used in the present invention is preferably one represented by the general formula (II).
上記式（ＩＩ）において、Ｒは、結合基Ｒ１－Ｒ２であり、Ｒ１は、分子内で同一でも異なってもよく、－［ＣＨ２ＣＨ（ＣＨ３）Ｏ］ｒ－、－［ＣＨ２ＣＨ２Ｏ］ｒ－、及び、－［ＣＨ２ＣＨ（ＯＨ）ＣＨ２Ｏ］ｒ－から選ばれる基（式中、ｒは、０～４の整数である）であり、Ｒ２は、炭素原子数が１２～２８の炭化水素基（好ましくは炭素原子数が１～４のアルキル基）、及び水素原子から選ばれる１種以上の基であり、１分子中のＲ２の少なくとも１つは、炭素原子数が１２～２８の炭化水素基（好ましくは炭素原子数１～４のアルキル基）である。Ａは、基－（ＣＨ２）ｔ－（ｔは、１～３の整数）であり、ｓは、１００～１００００の数である。 In the above formula (II), R is a bonding group R 1 -R 2 , R 1 may be the same or different within a molecule and is a group selected from -[CH 2 CH(CH 3 )O] r -, -[CH 2 CH 2 O] r -, and -[CH 2 CH(OH)CH 2 O] r - (wherein r is an integer of 0 to 4), R 2 is one or more groups selected from a hydrocarbon group having 12 to 28 carbon atoms (preferably an alkyl group having 1 to 4 carbon atoms) and a hydrogen atom, and at least one of R 2 in one molecule is a hydrocarbon group having 12 to 28 carbon atoms (preferably an alkyl group having 1 to 4 carbon atoms). A is a group -(CH 2 ) t - (t is an integer of 1 to 3), and s is a number from 100 to 10,000.
式（ＩＩ）の疎水変性アルキルセルロースは、水溶性セルロースエーテル誘導体に、ポリオキシアルキレン鎖を介して疎水性基である長鎖アルキル基を導入した構造を有する。分子の基となる水溶性セルロースエーテル誘導体は、例えば、メチルセルロース、エチルセルロース、プロピルセルロース、ブチルセルロース、ヒドロキシエチルセルロース、ヒドロキシプロピルセルロース、ヒドロキシプロピルメチルセルロース等であり、それらと長鎖アルキルグリシジルエーテル（例えば、下記式（ＩＩ’）で表されるもの）とを反応させて得ることができる。 The hydrophobically modified alkyl cellulose of formula (II) has a structure in which a long-chain alkyl group, which is a hydrophobic group, is introduced into a water-soluble cellulose ether derivative via a polyoxyalkylene chain. Examples of water-soluble cellulose ether derivatives that serve as the molecular base include methyl cellulose, ethyl cellulose, propyl cellulose, butyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose, and hydroxypropyl methyl cellulose, and these can be obtained by reacting them with a long-chain alkyl glycidyl ether (for example, one represented by the following formula (II')).
上記の水溶性セルロースエーテル誘導体としては、ヒドロキシプロピルメチルセルロースまたはヒドロキシエチルセルロースが好ましく、特に、ヒドロキシプロピルメチルセルロースを選択することが好適である。さらに、長鎖アルキルグリシジルエーテル（ＩＩ’）のＲ’は、ステアリル基（－Ｃ１８Ｈ３７）またはセチル基（－Ｃ１６Ｈ３３）であることが好適である（これらの場合、－ＣＨ２ＣＨ（ＯＨ）ＣＨ２ＯＲ’は、－ＣＨ２ＣＨ（ＯＨ）ＣＨ２Ｏ－Ｃ１８Ｈ３７または－ＣＨ２ＣＨ（ＯＨ）ＣＨ２Ｏ－Ｃ１６Ｈ３３となる）。 The water-soluble cellulose ether derivative is preferably hydroxypropyl methylcellulose or hydroxyethyl cellulose, and more preferably hydroxypropyl methylcellulose. Furthermore, it is preferable that R' of the long-chain alkyl glycidyl ether ( II ') is a stearyl group ( -C18H37 ) or a cetyl group (-C16H33 ) (in these cases, -CH2CH (OH)CH2OR' is -CH2CH (OH) CH2O -C18H37 or -CH2CH (OH) CH2O - C16H33 ) .
疎水変性アルキルセルロース（Ａ－２成分）の最も好適な態様は、式（ＩＩ’）における疎水基Ｒ’をステアリル基としたステアロキシヒドロキシプロピルメチルセルロース（INCI名：Hydroxypropylmethylcellulose Stearoxy Ether）であり、「サンジェロース」という商品名で大同化成工業株式会社から市販されている製品を用いることも可能である。（商品名：サンジェロース９０Ｌ、９０Ｍ、９０Ｈ、６０Ｌ、６０Ｍ、及び６０Ｈ等）。 The most suitable form of hydrophobically modified alkyl cellulose (component A-2) is stearoxy hydroxypropyl methylcellulose (INCI name: Hydroxypropylmethylcellulose Stearoxy Ether), in which the hydrophobic group R' in formula (II') is a stearyl group, and it is also possible to use a product commercially available from Daido Kasei Kogyo Co., Ltd. under the trade name "Sangelose." (Trade names: Sangelose 90L, 90M, 90H, 60L, 60M, and 60H, etc.)
（Ａ－３）ポリアクリレートクロスポリマー
本発明で用いられるポリアクリレートクロスポリマー（Ａ－３成分）は、好ましくは、ポリアクリレート系の主鎖をポリオキシアルキレン鎖で架橋したクロスポリマーである。会合性増粘剤として作用する限り、ポリアクリレート系の主鎖は、種々の置換基（側鎖）を有していてもよい。
(A-3) Polyacrylate Crosspolymer The polyacrylate crosspolymer (component A-3) used in the present invention is preferably a crosspolymer in which a polyacrylate main chain is crosslinked with a polyoxyalkylene chain. As long as it acts as an associative thickener, the polyacrylate main chain may have various substituents (side chains).
特に好ましいポリアクリレートクロスポリマー（Ａ－３成分）の例として、ポリアクリレートクロスポリマー－６（INCI名：Polyacrylate Crosspolymer-6）を挙げることができる。ポリアクリレートクロスポリマー－６は、アクリロイルジメチルタウリンアンモニウム、ジメチルアクリルアミド、メタクリル酸ラウリルとメタクリル酸ラウレス－４の共重合体をトリアクリル酸トリメチロールプロパンで架橋したものである。例えば、セピック（ＳＥＰＰＩＣ）社から「ＳＥＰＩＭＡＸ ＺＥＮ」という商品名で市販されているものを使用できる。 A particularly preferred example of polyacrylate crosspolymer (component A-3) is polyacrylate crosspolymer-6 (INCI name: Polyacrylate Crosspolymer-6). Polyacrylate crosspolymer-6 is a copolymer of ammonium acryloyldimethyltaurate, dimethylacrylamide, lauryl methacrylate, and laureth-4 methacrylate crosslinked with trimethylolpropane triacrylate. For example, a product commercially available from SEPPIC under the name "SEPIMAX ZEN" can be used.
本発明における（Ａ）会合性増粘剤の配合量は、化粧料基剤の全量に対して、０．１～５．０質量％、好ましくは０．２～３．０質量％、より好ましくは０．３～２．０質量％、である。０．１質量％未満では独特の使用感が実現できない。一方、５．０質量％を超えて配合すると、べたつきが生じる場合がある。 The blending amount of the associative thickener (A) in the present invention is 0.1 to 5.0% by mass, preferably 0.2 to 3.0% by mass, and more preferably 0.3 to 2.0% by mass, based on the total amount of the cosmetic base. If it is less than 0.1% by mass, the unique feel of use cannot be achieved. On the other hand, if it is blended in an amount exceeding 5.0% by mass, stickiness may occur.
（Ｂ）吸水性ポリマー
本発明における吸水性ポリマー（Ｂ成分）は、ポリマーの自重の２倍以上、好ましくは１０倍以上、より好ましくは２０倍以上の重さの水を吸収することができるポリマーを意味する。吸水性ポリマーの吸水量の上限は特に限定されないが、好ましくは自重の７００倍以下のものを用いるのが好ましい。
(B) Water-absorbent polymer The water-absorbent polymer (component B) in the present invention means a polymer capable of absorbing water of a weight of at least 2 times, preferably at least 10 times, more preferably at least 20 times, its own weight. The upper limit of the water absorption capacity of the water-absorbent polymer is not particularly limited, but it is preferable to use one having a water absorption capacity of 700 times or less of its own weight.
一般に、吸水性ポリマーの吸水量（吸水率）は、前記したように「自重の何倍の水を吸収できる」といった表現で特定されることが多いが、本明細書では、吸水性ポリマーの「吸水率（Ｘ）」を次のように定義する。
（１）吸水性ポリマーの所定量を秤量し、撹拌しながら所定量の水を徐添する。
（２）ディスパーを用いて２０００ｒｐｍで２分以上撹拌して均一な状態にする。
（３）攪拌を停止して１２時間以上静置する。
（４）３０℃に調整した後、Ｂ型粘度計（ＶＩＳＣＯＭＥＴＥＲ ＴＶＢ－１０：ＴＯＫＩ ＳＡＮＧＹＯ）で粘度測定する。
（５）粘度が４９００ｍＰａ・ｓ（３０℃）未満である場合は、工程（１）における水の添加量を減らして上記（１）～（４）を繰り返し、粘度が５１００ｍＰａ・ｓ（３０℃）を超えた場合は、工程（１）における水の添加量を増やして上記（１）～（４）を繰り返し、工程（４）における粘度が５０００±１００ｍＰａ・ｓ（３０℃）の範囲内となったときの水の添加量を当該吸水性ポリマーの吸水率（Ｘ）とする。
Generally, the amount of water absorbed (water absorption rate) of a water-absorbent polymer is often specified by the expression "how many times its own weight in water it can absorb," as described above. In this specification, however, the "water absorption rate (X)" of a water-absorbent polymer is defined as follows.
(1) A predetermined amount of water-absorbing polymer is weighed out, and a predetermined amount of water is gradually added thereto while stirring.
(2) Use a disperser to mix at 2,000 rpm for at least 2 minutes until the mixture is homogenous.
(3) Stop stirring and let stand for 12 hours or more.
(4) After adjusting to 30° C., the viscosity is measured using a Brookfield viscometer (VISCOMETER TVB-10: TOKI SANGYO).
(5) When the viscosity is less than 4900 mPa·s (30° C.), the amount of water added in step (1) is reduced and the above steps (1) to (4) are repeated. When the viscosity exceeds 5100 mPa·s (30° C.), the amount of water added in step (1) is increased and the above steps (1) to (4) are repeated. The amount of water added when the viscosity in step (4) falls within the range of 5000±100 mPa·s (30° C.) is defined as the water absorption rate (X) of the water-absorbing polymer.
本発明で好ましく使用される吸水性ポリマーの例として、（Ｂ－１）アクリレーツクロスポリマー－２－Ｎａ、及び（Ｂ－２）アクリル酸Ｎａグラフトデンプンを挙げることができる。これらは、１種または２種以上を組み合わせて配合することができる。 Examples of water-absorbent polymers that are preferably used in the present invention include (B-1) acrylates crosspolymer-2-Na and (B-2) sodium acrylate grafted starch. These can be blended alone or in combination of two or more.
（Ｂ－１）アクリレーツクロスポリマー－２－Ｎａ
アクリレーツクロスポリマー－２－Ｎａ（Ｂ－１成分）は、アクリル酸、メタクリル酸又はこれらの単純エステル１種以上のモノマーからなる共重合体をエチレングリコールジグリシジルエーテルで架橋したもののナトリウム塩である。
(B-1) Acrylates crosspolymer-2-Na
Acrylates crosspolymer-2-Na (B-1 component) is a sodium salt of a copolymer consisting of one or more monomers of acrylic acid, methacrylic acid or their simple esters crosslinked with ethylene glycol diglycidyl ether.
アクリレーツクロスポリマー－２－Ｎａ（INCI名：Sodium Acrylates Crosspolymer-2）は、市販品を用いることができる。例えば、「ＡＲＯＮ ＮＴ－Ｚ（東亜合成株式会社製）」（吸水率＝２０～２２）、「ＡＱＵＡＫＥＥＰ １０ＳＨ－ＮＦＣ（住友精化株式会社）」（吸水率＝約２００～３００）等が好ましく使用される。 Acrylates crosspolymer-2-Na (INCI name: Sodium Acrylates Crosspolymer-2) can be a commercially available product. For example, "ARON NT-Z (manufactured by Toa Gosei Co., Ltd.)" (water absorption rate: 20 to 22) and "AQUAKEEP 10SH-NFC (Sumitomo Seika Chemicals Co., Ltd.)" (water absorption rate: approximately 200 to 300) are preferably used.
（Ｂ－２）アクリル酸Ｎａグラフトデンプン
本発明の化粧料におけるアクリル酸Ｎａグラフトデンプン（Ｂ－２成分）は、デンプンにアクリル酸をグラフト重合したもののナトリウム塩である（INCI名：Sodium Polyacrylate Starch）。アクリル酸Ｎａグラフトデンプンの吸水率は６００～７００であることが知られている。
(B-2) Sodium acrylate grafted starch The sodium acrylate grafted starch (B-2 component) in the cosmetic of the present invention is a sodium salt of starch grafted with acrylic acid (INCI name: Sodium Polyacrylate Starch). It is known that the water absorption rate of sodium acrylate grafted starch is 600 to 700.
本発明におけるアクリル酸Ｎａグラフトデンプンは、市販品として入手可能なものを使用することができる。市販品としては、例えば、ＭＡＫＩＭＯＵＳＳＥ７（平均粒径約７μｍ）、ＭＡＫＩＭＯＵＳＳＥ１２（平均粒径約１２μｍ）、ＭＡＫＩＭＯＵＳＳＥ２５（平均粒径約２５μｍ）、及びＭＡＫＩＭＯＵＳＳＥ４００（平均粒径約４００μｍ）（以上、大東化成工業株式会社製）、Ｓａｎｆｌｅｓｈ ＳＴ－１００Ｃ、ＳＴ１００ＭＣ及びＩＭ－３００ＭＣ（以上、三洋化成工業株式会社製）等が挙げられる。 The sodium acrylate grafted starch used in the present invention may be a commercially available product. Examples of commercially available products include MAKIMOUSSE 7 (average particle size: about 7 μm), MAKIMOUSSE 12 (average particle size: about 12 μm), MAKIMOUSSE 25 (average particle size: about 25 μm), and MAKIMOUSSE 400 (average particle size: about 400 μm) (all manufactured by Daito Chemical Industry Co., Ltd.), Sanflesh ST-100C, ST100MC, and IM-300MC (all manufactured by Sanyo Chemical Industries, Ltd.), etc.
また、デンプンを主鎖とし、アクリル系ポリマーがグラフトされた高吸水性ポリマーも本発明におけるアクリル酸Ｎａグラフトデンプンに包含されるものとする。そのようなポリマー（ＩＮＣＩ名：デンプン／アクリルアミド／アクリル酸ナトリウムコポリマー）の市販品としては、Ｗａｔｅｒ Ｌｏｃｋ Ａ－２４０、Ａ－１８０、Ｂ－２０４、Ｄ－２２３、Ａ－１００、Ｃ－２００及びＤ－２２３（Ｇｒａｉｎ Ｐｒｏｃｅｓｓｉｎｇ社製）が挙げられる。 In addition, highly water-absorbent polymers having starch as the main chain and acrylic polymers grafted thereto are also included in the sodium acrylate-grafted starch of the present invention. Commercially available products of such polymers (INCI name: starch/acrylamide/sodium acrylate copolymer) include Water Lock A-240, A-180, B-204, D-223, A-100, C-200 and D-223 (manufactured by Grain Processing).
本発明の化粧料における吸水性ポリマー（Ｂ成分）の配合量は、化粧料全量に対して０．０６～１０．０質量％、好ましくは０．１～５．０質量％、より好ましくは０．１～３．０質量％である。ただし、配合した吸水性ポリマーの吸水率（Ｘ）の値と、当該吸水性ポリマーの配合量（Ｙ質量％）の値との積（Ｘ×Ｙ）を２０～７５の範囲内とする必要があり、２０～７０の範囲内がより好ましく、２４～７０の範囲内となるようにするのが更に好ましい。「Ｘ×Ｙ」は当該化粧料に配合した吸水性ポリマーにより吸収可能な水の量（吸水量）を表すと言える。吸水量（Ｘ×Ｙ）の値が２０未満である場合、あるいは７５を超える場合には、いずれも独特の使用感触（くずれ感）を得ることが困難である。 The amount of the water-absorbent polymer (B component) in the cosmetic of the present invention is 0.06 to 10.0% by mass, preferably 0.1 to 5.0% by mass, and more preferably 0.1 to 3.0% by mass, based on the total amount of the cosmetic. However, the product (X x Y) of the water absorption rate (X) of the blended water-absorbent polymer and the blended amount (Y mass%) of the water-absorbent polymer must be within the range of 20 to 75, more preferably within the range of 20 to 70, and even more preferably within the range of 24 to 70. It can be said that "X x Y" represents the amount of water that can be absorbed by the water-absorbent polymer blended in the cosmetic (water absorption amount). When the water absorption amount (X x Y) is less than 20 or exceeds 75, it is difficult to obtain a unique feel when used (feeling of crumbling).
（Ｃ）極性油
本発明の化粧料における第３の必須成分は極性油（「Ｃ成分」ともいう）である。本明細書における「極性油」は、ＩＯＢ値が０．０５～０．８０の油分である。ここで、ＩＯＢ値とは有機概念図における有機性値（ＯＶ）に対する無機性値（ＩＶ）の比、すなわち、「無機性値（ＩＶ）／有機性値（ＯＶ）」を意味する。有機概念図に関しては、例えば、「有機概念図－基礎と応用－」（甲田善生著、三共出版、１９８４）等を参照されたい。
(C) Polar oil The third essential component in the cosmetic of the present invention is a polar oil (also referred to as "Component C"). In this specification, "polar oil" refers to an oil having an IOB value of 0.05 to 0.80. Here, the IOB value means the ratio of the inorganic value (IV) to the organic value (OV) in the organic conceptual diagram, that is, "inorganic value (IV)/organic value (OV)". For details of the organic conceptual diagram, please refer to, for example, "Organic Conceptual Diagram - Basics and Applications" (Koda Yoshio, Sankyo Publishing, 1984).
本発明で使用される極性油（Ｃ成分）としては、特に限定されないが、ジイソステアリン酸グリセリル、リンゴ酸ジイソステアリル、ピバリン酸トリプロピレングリコール、トリ２－エチルヘキサン酸グリセリル、オクタン酸セチル、ラウリン酸ヘキシル、ミリスチン酸イソプロピル、パルミチン酸オクチル、ステアリン酸イソセチル、イソステアリン酸イソプロピル、イソパルミチン酸オクチル、イソステアリン酸イソデシル、コハク酸２－エチルヘキシル、セバシン酸ジエチル、エチルヘキサン酸セチル、２－シアノ－３，３－ジフェニルアクリル酸２－エチルヘキシル、ジピバリン酸トリプロピレングリコール、トリ２－エチルヘキサン酸トリメチロールプロパン、テトラ２－エチルヘキサン酸ペンタンエリスリット、ナフタリンジカルボン酸ジエチルヘキシル、安息香酸（Ｃ１２～１５）アルキル、トリ（カプリル・カプリン酸）グリセリン、ジ（カプリル・カプリン酸）プロピレングリコール、コハク酸ジ２－エチルヘキシル、セバシン酸ジイソプロピル、ホホバ油、ラウロイルグルタミン酸ジ（フィトステリル／オクチルドデシル）、トリイソステアリン酸グリセリル、トリエチルヘキサノイン、ダイマージリノール酸（フィトステリル／ベヘニル）、ダイマージリノール酸（フィトステリル／イソステアリル／セチル／ステアリル／イソステアリル／セチル／ステアリル／ベヘニル）、パルミチン酸イソプロピル、マカダミアナッツ脂肪酸フィトステリル、テトラ（ベヘン酸／安息香酸／エチルヘキサン酸）ペンタエリスリチル、パルミチン酸エチルヘキシル、ミリスチン酸ミリスチル、ネオペンタン酸イソデシル、及び油溶性紫外線吸収剤等が挙げられる。 The polar oil (component C) used in the present invention is not particularly limited, but may be glyceryl diisostearate, diisostearyl malate, tripropylene glycol pivalate, glyceryl tri-2-ethylhexanoate, cetyl octanoate, hexyl laurate, isopropyl myristate, octyl palmitate, isocetyl stearate, isopropyl isostearate, octyl isopalmitate, isodecyl isostearate, 2-ethylhexyl succinate, diethyl sebacate, cetyl ethylhexanoate, 2-ethylhexyl 2-cyano-3,3-diphenylacrylate, tripropylene glycol dipivalate, trimethylolpropane tri-2-ethylhexanoate, pentane erythritol tetra-2-ethylhexanoate, diethylhexyl naphthalene dicarboxylate, benzoic acid (C12 ~15) Alkyl, tri(capryl/capric acid)glycerin, di(capryl/capric acid)propylene glycol, di(2-ethylhexyl) succinate, diisopropyl sebacate, jojoba oil, di(phytosteryl/octyldodecyl) lauroyl glutamate, glyceryl triisostearate, triethylhexanoin, dimer dilinoleate (phytosteryl/behenyl), dimer dilinoleate (phytosteryl/isostearyl/cetyl/stearyl/isostearyl/cetyl/stearyl/behenyl), isopropyl palmitate, phytosteryl macadamia nut fatty acid, pentaerythrityl tetra(behenate/benzoate/ethylhexanoate), ethylhexyl palmitate, myristyl myristate, isodecyl neopentanoate, and oil-soluble UV absorbers.
本発明の化粧料には、（Ｃ）極性油の一部または全部として油溶性紫外線吸収剤を含有せしめることにより紫外線防御効果を付与することができる。本発明の化粧料に配合される油溶性紫外線吸収剤は、従来から化粧料に使用されているものから選択できる。具体例として、メトキシケイヒ酸誘導体、サリチル酸誘導体、ベンゾイル誘導体、カンファー誘導体、パラアミノ安息香酸誘導体、トリアジン誘導体、ベンゾフェノン誘導体、及びポリシリコン系が挙げられる。より具体的には、メトキシケイヒ酸エチルヘキシル、オクトクリレン、ポリシリコン－１５、ｔ－ブチルメトキシジベンゾイルメタン、エチルヘキシルトリアゾン、ジエチルアミノヒドロキシベンゾイル安息香酸ヘキシル、ビスエチルヘキシルオキシフェノールメトキシフェニルトリアジン、オキシベンゾン－３、メチレンビスベンゾトリアゾリルテトラメチルブチルフェノール、フェニルベンズイミダゾールスルホン酸、ホモサレート、サリチル酸オクチル（サリチル酸エチルへキシル）等が挙げられるが、これらに限定されない。また、油溶性紫外線吸収剤は、１種又は２種以上の組み合わせで配合することができる。 The cosmetic of the present invention can be imparted with an ultraviolet protection effect by incorporating an oil-soluble ultraviolet absorber as part or all of the polar oil (C). The oil-soluble ultraviolet absorber to be incorporated in the cosmetic of the present invention can be selected from those conventionally used in cosmetics. Specific examples include methoxycinnamic acid derivatives, salicylic acid derivatives, benzoyl derivatives, camphor derivatives, para-aminobenzoic acid derivatives, triazine derivatives, benzophenone derivatives, and polysilicon-based compounds. More specific examples include ethylhexyl methoxycinnamate, octocrylene, polysilicon-15, t-butyl methoxydibenzoylmethane, ethylhexyl triazone, diethylamino hydroxybenzoyl hexyl benzoate, bisethylhexyloxyphenol methoxyphenyl triazine, oxybenzone-3, methylene bisbenzotriazolyl tetramethylbutylphenol, phenylbenzimidazole sulfonic acid, homosalate, octyl salicylate (ethylhexyl salicylate), and the like, but are not limited thereto. In addition, oil-soluble UV absorbers can be used alone or in combination of two or more.
本発明の化粧料における極性油（Ｃ成分）の配合量は、化粧料全量に対して３～３０質量％であることを必須とし、好ましくは４～２５質量％、より好ましくは５～２０質量％、例えば１０～２０質量％等である。配合量が３質量％未満であると極性油配合による効果が十分に得られず、３０質量％を超えて配合すると、塗布後にべたつきを生じ、独特の使用感触（くずれ感）が失われることがある。 The amount of polar oil (ingredient C) in the cosmetic of the present invention must be 3 to 30% by mass relative to the total amount of the cosmetic, and is preferably 4 to 25% by mass, more preferably 5 to 20% by mass, for example 10 to 20% by mass. If the amount is less than 3% by mass, the effect of the polar oil is not fully obtained, and if it is more than 30% by mass, stickiness occurs after application and the unique feel when used (feeling of crumbling) may be lost.
本発明の化粧料は、前記の必須成分（Ａ）、（Ｂ）及び（Ｃ）に加えて、化粧料や皮膚外用剤に通常配合し得る他の成分を、本発明の効果を損なわない範囲で、任意に配合することができる。
他の任意成分としては、限定されないが、例えば、油分（ただし、極性油（Ｃ成分）以外）、界面活性剤、増粘剤（ただし、会合性増粘剤（Ａ成分）以外）、粉末成分、保湿剤、各種薬効成分、防腐剤、酸化防止剤等が挙げられる。
In addition to the essential components (A), (B), and (C) described above, the cosmetic preparation of the present invention may contain any other components that may be typically incorporated into cosmetics or topical skin preparations, provided that the effects of the present invention are not impaired.
Other optional components include, but are not limited to, oils (other than polar oils (component C)), surfactants, thickeners (other than associative thickeners (component A)), powder components, moisturizers, various medicinal components, preservatives, antioxidants, etc.
極性油（Ｃ成分）以外の油分としては、シリコーン油や炭化水素油等の非極性油分が挙げられる。
界面活性剤は、化粧料等に使用出来るものであればよく特に限定されない。特に、ＨＬＢ値が７以上、好ましくは１０以上の親水性非イオン性界面活性剤が好ましく用いられる。
Examples of oils other than the polar oil (component C) include non-polar oils such as silicone oils and hydrocarbon oils.
There are no particular limitations on the surfactant, so long as it can be used in cosmetics, etc. In particular, hydrophilic nonionic surfactants having an HLB value of 7 or more, preferably 10 or more, are preferably used.
増粘剤として、水溶性増粘剤（ただし、会合性増粘剤（Ａ成分）以外）を配合すると、化粧料の乳化安定性が更に向上するので好ましい。 It is preferable to use a water-soluble thickener (other than the associative thickener (component A)) as the thickener, as this will further improve the emulsion stability of the cosmetic.
水溶性増粘剤としては、化粧料に配合可能なものであればよく、例えば、寒天、キサンタンガム、アラビアゴム、カラギーナン、ペクチン、クインスシード（マルメロ）、アルゲコロイド（褐藻エキス）等の植物系高分子、デキストラン、プルラン等の微生物系高分子、コラーゲン、カゼイン、ゼラチン等の動物系高分子、アルギン酸ナトリウム等のアルギン酸系高分子、カルボキシビニルポリマー（ＣＡＲＢＯＰＯＬなど）等のビニル系高分子、ポリアクリル酸ナトリウム、ポリアクリルアミド、（アクリル酸／アクリル酸アルキル（Ｃ１０－３０）コポリマー）等のアクリル系高分子、ベントナイト、ケイ酸アルミニウムマグネシウム、ラポナイト等の無機系水溶性高分子等が挙げられる。 The water-soluble thickener may be any that can be incorporated into cosmetics, and examples of such thickeners include plant-based polymers such as agar, xanthan gum, gum arabic, carrageenan, pectin, quince seed, and algae colloid (brown algae extract), microbial polymers such as dextran and pullulan, animal polymers such as collagen, casein, and gelatin, alginic acid-based polymers such as sodium alginate, vinyl polymers such as carboxyvinyl polymers (CARBOPOL, etc.), acrylic polymers such as sodium polyacrylate, polyacrylamide, and (acrylic acid/alkyl acrylate (C10-30) copolymer), and inorganic water-soluble polymers such as bentonite, magnesium aluminum silicate, and laponite.
粉末成分としては、体質顔料等の無機粉末（例えば、タルク、カオリン、セリサイト、白雲母、合成雲母、金雲母、紅雲母、黒雲母、リチア雲母、バーミキュライト、炭酸マグネシウム、炭酸カルシウム、珪藻土、ケイ酸マグネシウム、ケイ酸カルシウム、ケイ酸アルミニウム、ケイ酸バリウム、ケイ酸ストロンチウム、タングステン酸金属塩、シリカ、ヒドロキシアパタイト、ゼオライト、窒化ホウ素、セラミクスパウダー等）、有機粉末（ＰＭＭＡ粉末、ナイロン粉末等）、あるいは紫外線散乱剤（酸化チタン、酸化亜鉛等）が例示できる。中でも、体質顔料であるタルクは、化粧料の紫外線防御能を更に向上させる効果がある。 Examples of powder components include inorganic powders such as extender pigments (e.g., talc, kaolin, sericite, muscovite, synthetic mica, phlogopite, red mica, biotite, lithia mica, vermiculite, magnesium carbonate, calcium carbonate, diatomaceous earth, magnesium silicate, calcium silicate, aluminum silicate, barium silicate, strontium silicate, metal tungstate, silica, hydroxyapatite, zeolite, boron nitride, ceramic powder, etc.), organic powders (PMMA powder, nylon powder, etc.), or UV scattering agents (titanium oxide, zinc oxide, etc.). Among these, talc, which is an extender pigment, is effective in further improving the UV protection ability of cosmetics.
保湿剤としては、１，３－ブチレングリコール、プロパンジオール、グリセリン等の多価アルコール、糖アルコール等を例示できる。 Examples of moisturizing agents include polyhydric alcohols such as 1,3-butylene glycol, propanediol, and glycerin, and sugar alcohols.
なお、本発明の化粧料に、フェニルベンズイミダゾールスルホン酸等の水溶性紫外線吸収剤を配合すると、必然的に対イオンとの塩の形態で配合することになり、当該対イオンの存在が（Ｂ）吸水性ポリマーと相互作用を起こして使用感を低下させる場合がある。従って、本発明の化粧料は水溶性紫外線吸収剤を配合しない態様を包含し、配合する場合でも、その配合量を０．５質量％以下に制限するのが好ましい。 When a water-soluble UV absorber such as phenylbenzimidazole sulfonic acid is blended in the cosmetic of the present invention, it is inevitably blended in the form of a salt with a counter ion, and the presence of the counter ion may interact with the water-absorbing polymer (B) and reduce the feeling of use. Therefore, the cosmetic of the present invention includes an embodiment in which a water-soluble UV absorber is not blended, and even if it is blended, it is preferable to limit the blending amount to 0.5 mass% or less.
本発明の化粧料の粘度は、特に限定されないが、３０℃においてＢ型粘度計で測定した値が、１０，０００ｍＰａ・ｓ以上、好ましくは２０，０００ｍＰａ・ｓ以上であり、２００，０００ｍＰａ・ｓ以下、好ましくは１００，０００ｍＰａ・ｓ以下とするのが好ましい。 The viscosity of the cosmetic of the present invention is not particularly limited, but it is preferable that the viscosity measured at 30°C with a B-type viscometer is 10,000 mPa·s or more, preferably 20,000 mPa·s or more, and 200,000 mPa·s or less, preferably 100,000 mPa·s or less.
本発明の化粧料は、従来から水中油型乳化化粧料に汎用されている方法に準じて製造することができる。例えば、水性成分、任意の粉末成分および油性成分を別途混合し、水性成分に粉末成分及び油性成分を加えて撹拌乳化することにより製造することができる。 The cosmetic of the present invention can be produced according to a method commonly used for conventional oil-in-water emulsion cosmetics. For example, the cosmetic can be produced by separately mixing an aqueous component, an optional powder component, and an oil component, adding the powder component and the oil component to the aqueous component, and emulsifying by stirring.
本発明の化粧料は、上記の構成とすることにより、塗布時には適度なコク感がありながら、その後に崩れて水が溢れ出すようなみずみずしい使用感（くずれ感）を有することを特徴としており、これらの特徴を生かした皮膚化粧料、特にスキンケア化粧料として提供するのが好ましい。化粧料の形態は特に限定されないが、例えば、クリーム又は乳液の形態で提供するのが好適である。 The cosmetic of the present invention, having the above-mentioned composition, is characterized by having a moderate richness when applied, and then a refreshing feeling when used (a feeling of crumbling), as if the cosmetic crumbles and water overflows. Taking advantage of these characteristics, it is preferable to provide the cosmetic as a skin cosmetic, particularly a skin care cosmetic. The form of the cosmetic is not particularly limited, but it is preferable to provide it in the form of, for example, a cream or emulsion.
以下、実施例を挙げて本発明をさらに詳しく説明するが、本発明はこれらの実施例により限定されるものではない。配合量については特記しない限り質量％を示す。 The present invention will be described in more detail below with reference to examples, but the present invention is not limited to these examples. The blend amounts are expressed in mass % unless otherwise specified.
下記の表１～表３に示す処方で水中油型乳化化粧料（試料）を調製した。各例の試料について、以下の項目を評価した。
（１）安定性
（２）崩れて水が溢れ出すような独特の使用感（くずれ感）
（３）塗布後のべたつき
（４）外観
Oil-in-water emulsion cosmetics (samples) were prepared according to the formulations shown in the following Tables 1 to 3. Each sample was evaluated for the following items.
(1) Stability (2) A unique feeling of collapse, as if the product were to crumble and cause water to overflow
(3) Stickiness after application (4) Appearance
・評価方法
（１）安定性
各例の試料を５０℃で７２時間保存した後の乳化状態を目視で観察した。
Ａ＋：極めて良好
Ａ：良好
Ｂ：普通
Ｃ：不良
Evaluation Method (1) Stability Each sample was stored at 50° C. for 72 hours, and the emulsified state was then visually observed.
A + : Very good A: Good B: Average C: Poor
（２）くずれ感
専門パネラー（女性１０名）に各試料（組成物）を使用してもらい、肌に塗布してから本発明に独特の使用感触（くずれ感）を感じるか否かについての回答に基づき評価した。
Ａ＋：１０名中９名以上が感じると回答
Ａ：１０名中８名以上が感じると回答
Ｂ：１０名中５～７名が感じると回答
Ｃ：１０名中４名以下が感じると回答
(2) Feeling of crumbling A panel of 10 women was asked to use each sample (composition) and evaluate it based on their responses as to whether or not they felt the unique feel of use (feeling of crumbling) of the present invention after applying it to the skin.
A + : 9 or more out of 10 people answered that they felt it. A: 8 or more out of 10 people answered that they felt it. B: 5 to 7 out of 10 people answered that they felt it. C: 4 or less out of 10 people answered that they felt it.
（３）塗布後のべたつき
専門パネラー（女性１０名）に各試料（組成物）を使用してもらい、肌に塗布した後にべたつきを感じるか否かについての回答に基づき評価した。
Ａ＋：１０名中９名以上がべたつきを感じないと回答
Ａ：１０名中８名以上がべたつきを感じないと回答
Ｂ：１０名中５～７名がべたつきを感じないと回答
Ｃ：１０名中４名以下がべたつきを感じないと回答
(3) Stickiness after Application A panel of 10 women used each sample (composition) and evaluated the composition based on their responses as to whether or not they felt sticky after application to the skin.
A + : 9 or more out of 10 people answered that they do not feel sticky. A: 8 or more out of 10 people answered that they do not feel sticky. B: 5 to 7 out of 10 people answered that they do not feel sticky. C: 4 or less out of 10 people answered that they do not feel sticky.
（４）外観
各例の試料を調製した直後に外観を目視観察し、均一性（ツブの存在の有無等）を評価した。
Ａ＋：極めて均一
Ａ：均一
Ｂ：普通
Ｃ：不均一（ツブが観察される）
(4) Appearance Immediately after preparation of each sample, the appearance was visually observed and the uniformity (presence or absence of grains, etc.) was evaluated.
A + : Extremely uniform A: Uniform B: Normal C: Non-uniform (grains observed)
本発明の化粧料（実施例１～１３）は、安定性、くずれ感、べたつき、外観の全ての評価項目で非常に満足できる結果を示した。これら評価は、会合性増粘剤の種類を変更しても（実施例１～４）、処方からタルクを除いても同等であった（実施例５）。これらの実施例に対し、会合性増粘剤を配合していない比較例１及び２（表１）では、独特な使用感（くずれ感）が得られなかった。会合性増粘剤でないカプリル酸ポリグリセリル－６を同量配合した比較例３も同様であった。また、実施例１（粘度３６０００ｍＰａ・ｓ（３０℃、Ｂ型粘度計）と同等の粘度（３７０００ｍＰａ・ｓ）とするためにカプリル酸ポリグリセリル－６を増量した比較例４も同様であり、却ってべたつきを生じた。なお、タルクを配合した実施例１の試料のＳＰＦは、タルクを配合しない実施例５の試料のＳＰＦよりも向上した。 The cosmetics of the present invention (Examples 1 to 13) showed very satisfactory results in all evaluation items of stability, feeling of crumbling, stickiness, and appearance. These evaluations were the same even when the type of associative thickener was changed (Examples 1 to 4) or when talc was removed from the formulation (Example 5). In contrast to these Examples, Comparative Examples 1 and 2 (Table 1), which did not contain an associative thickener, did not provide a unique feeling of use (feeling of crumbling). The same was true for Comparative Example 3, which contained the same amount of polyglyceryl-6 caprylate, which is not an associative thickener. The same was true for Comparative Example 4, in which the amount of polyglyceryl-6 caprylate was increased to achieve the same viscosity (37,000 mPa·s) as Example 1 (viscosity 36,000 mPa·s (30°C, B-type viscometer)), and instead produced stickiness. The SPF of the sample of Example 1, which contained talc, was improved over the SPF of the sample of Example 5, which did not contain talc.
一方、吸水性ポリマーを配合しない比較例５（表２）でも「くずれ感」は得られず、会合性増粘剤の量を倍増した比較例６は、くずれ感は得られるものの、べたつきを生じた。また、吸水性ポリマーの配合量が少なく、吸水率と配合量との積（Ｘ×Ｙ）が２０に満たない比較例７、及び吸水率と配合量との積（Ｘ×Ｙ）が７５を超える比較例８でも「くずれ感」が得られなかった。 On the other hand, no "crumbly feeling" was obtained in Comparative Example 5 (Table 2), which did not contain any absorbent polymer, and Comparative Example 6, which doubled the amount of associative thickener, obtained a crumbled feeling but was sticky. Also, no "crumbly feeling" was obtained in Comparative Example 7, which contained a small amount of absorbent polymer and the product (X x Y) of the water absorption rate and the amount added was less than 20, and in Comparative Example 8, which contained a product (X x Y) of the water absorption rate and the amount added exceeding 75.
表１において、会合性増粘剤として（ＰＥＧ－２４０／デシルテトラデセス－２０／ＨＤＩ）コポリマーを用いた実施例２では安定性が他の会合性増粘剤と比較して若干低かったが、（アクリル酸／アクリル酸アルキル（Ｃ１０－３９））コポリマーを増量することにより最高評価（Ａ＋）となった（実施例９（表３））。 In Table 1, Example 2, which used a (PEG-240/decyltetradeceth-20/HDI) copolymer as an associative thickener, had slightly lower stability than the other associative thickeners, but by increasing the amount of the (acrylic acid/alkyl acrylate (C10-39)) copolymer, the highest rating (A + ) was achieved (Example 9 (Table 3)).
吸水性ポリマーの種類を変更しても、極性油の配合量を３０質量％までの範囲で変化させても、本発明が意図する性質は全て良好であった（実施例１０～１３）。しかし、極性油の配合量が３０質量％を超えると、塗布後のべたつきが顕著になった（比較例９）。 Even when the type of water-absorbent polymer was changed, and the amount of polar oil was varied up to 30% by mass, all of the properties intended by the present invention were good (Examples 10 to 13). However, when the amount of polar oil exceeded 30% by mass, stickiness after application became noticeable (Comparative Example 9).
Claims (8)
（Ｂ）自重の２０倍以上の水を吸収することができる吸水性ポリマー、及び
（Ｃ）極性油、を含有する水中油型乳化化粧料であって、
前記（Ｃ）極性油の配合量が化粧料全量に対して３～３０質量％であり、
前記（Ｂ）吸水性ポリマーの吸水率（Ｘ）とその配合量（Ｙ質量％）との積（Ｘ×Ｙ）が２０～７５の範囲内であることを特徴とする水中油型乳化化粧料。 (A) an associative thickener,
An oil-in-water emulsion cosmetic comprising (B) a water-absorbent polymer capable of absorbing 20 times or more of its own weight in water , and (C) a polar oil,
The blending amount of the (C) polar oil is 3 to 30 mass% based on the total amount of the cosmetic,
The oil-in-water emulsion cosmetic is characterized in that the product (X×Y) of the water absorption rate (X) of the water-absorbent polymer (B) and its blending amount (Y mass%) is within the range of 20 to 75.
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| JP2015120682A (en) | 2013-11-19 | 2015-07-02 | 株式会社 資生堂 | Oil-in-water emulsion cosmetic |
| JP2018518516A (en) | 2015-06-29 | 2018-07-12 | ザ プロクター アンド ギャンブル カンパニー | Superabsorbent polymers and starch powders for use in skin care compositions |
| JP2019142825A (en) | 2018-02-23 | 2019-08-29 | 株式会社ナリス化粧品 | Oil-in-water emulsion composition |
| JP2019194184A (en) | 2018-04-25 | 2019-11-07 | 小池化学株式会社 | Emulsion composition for preparing aerosol for mist spray and emulsion composition for preparing aerosol for sherbet spray |
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| JP2015120682A (en) | 2013-11-19 | 2015-07-02 | 株式会社 資生堂 | Oil-in-water emulsion cosmetic |
| JP2018518516A (en) | 2015-06-29 | 2018-07-12 | ザ プロクター アンド ギャンブル カンパニー | Superabsorbent polymers and starch powders for use in skin care compositions |
| JP2019142825A (en) | 2018-02-23 | 2019-08-29 | 株式会社ナリス化粧品 | Oil-in-water emulsion composition |
| JP2019194184A (en) | 2018-04-25 | 2019-11-07 | 小池化学株式会社 | Emulsion composition for preparing aerosol for mist spray and emulsion composition for preparing aerosol for sherbet spray |
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