CN105686962A - Skin cosmetic and skin care method - Google Patents
Skin cosmetic and skin care method Download PDFInfo
- Publication number
- CN105686962A CN105686962A CN201510530721.8A CN201510530721A CN105686962A CN 105686962 A CN105686962 A CN 105686962A CN 201510530721 A CN201510530721 A CN 201510530721A CN 105686962 A CN105686962 A CN 105686962A
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- Prior art keywords
- component
- skin
- alkyl ether
- carboxylic acid
- oil
- Prior art date
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- 239000002537 cosmetic Substances 0.000 title claims abstract description 105
- 238000000034 method Methods 0.000 title claims abstract description 14
- -1 alkyl ether carboxylic acid Chemical class 0.000 claims abstract description 94
- 239000002994 raw material Substances 0.000 claims abstract description 42
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 34
- 239000000126 substance Substances 0.000 claims abstract description 32
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 29
- 239000003513 alkali Substances 0.000 claims abstract description 28
- 238000006386 neutralization reaction Methods 0.000 claims abstract description 22
- 238000005406 washing Methods 0.000 claims abstract description 15
- 150000003839 salts Chemical class 0.000 claims abstract description 13
- 230000003472 neutralizing effect Effects 0.000 claims abstract description 12
- 239000002253 acid Substances 0.000 claims abstract description 5
- 150000007530 organic bases Chemical class 0.000 claims description 27
- 239000012071 phase Substances 0.000 claims description 18
- 150000007529 inorganic bases Chemical class 0.000 claims description 15
- 239000008346 aqueous phase Substances 0.000 claims description 12
- 125000004432 carbon atom Chemical group C* 0.000 claims description 12
- 125000000217 alkyl group Chemical group 0.000 claims description 11
- 235000014113 dietary fatty acids Nutrition 0.000 claims description 10
- 229930195729 fatty acid Natural products 0.000 claims description 10
- 239000000194 fatty acid Substances 0.000 claims description 10
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 claims description 8
- 239000002585 base Substances 0.000 claims description 8
- 238000002360 preparation method Methods 0.000 claims description 8
- ODKSFYDXXFIFQN-BYPYZUCNSA-N L-arginine Chemical compound OC(=O)[C@@H](N)CCCN=C(N)N ODKSFYDXXFIFQN-BYPYZUCNSA-N 0.000 claims description 7
- 229930064664 L-arginine Natural products 0.000 claims description 7
- 235000014852 L-arginine Nutrition 0.000 claims description 7
- CBTVGIZVANVGBH-UHFFFAOYSA-N aminomethyl propanol Chemical compound CC(C)(N)CO CBTVGIZVANVGBH-UHFFFAOYSA-N 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 3
- 239000002904 solvent Substances 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 10
- 238000001035 drying Methods 0.000 abstract description 5
- 238000004945 emulsification Methods 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 66
- 235000019198 oils Nutrition 0.000 description 66
- 230000000717 retained effect Effects 0.000 description 18
- 239000000203 mixture Substances 0.000 description 17
- 230000000052 comparative effect Effects 0.000 description 11
- 239000000839 emulsion Substances 0.000 description 10
- 238000011156 evaluation Methods 0.000 description 10
- DHMQDGOQFOQNFH-UHFFFAOYSA-N Glycine Chemical compound NCC(O)=O DHMQDGOQFOQNFH-UHFFFAOYSA-N 0.000 description 6
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 6
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- 238000012360 testing method Methods 0.000 description 6
- BQFCCCIRTOLPEF-VHEBQXMUSA-N Oil Orange SS Chemical compound CC1=CC=CC=C1\N=N\C1=C(O)C=CC2=CC=CC=C12 BQFCCCIRTOLPEF-VHEBQXMUSA-N 0.000 description 5
- 150000002148 esters Chemical class 0.000 description 5
- 150000004665 fatty acids Chemical class 0.000 description 5
- 239000004094 surface-active agent Substances 0.000 description 5
- 230000032798 delamination Effects 0.000 description 4
- 239000003599 detergent Substances 0.000 description 4
- MTCFGRXMJLQNBG-REOHCLBHSA-N (2S)-2-Amino-3-hydroxypropansäure Chemical compound OC[C@H](N)C(O)=O MTCFGRXMJLQNBG-REOHCLBHSA-N 0.000 description 3
- HXKKHQJGJAFBHI-UHFFFAOYSA-N 1-aminopropan-2-ol Chemical compound CC(O)CN HXKKHQJGJAFBHI-UHFFFAOYSA-N 0.000 description 3
- MIJDSYMOBYNHOT-UHFFFAOYSA-N 2-(ethylamino)ethanol Chemical compound CCNCCO MIJDSYMOBYNHOT-UHFFFAOYSA-N 0.000 description 3
- BFSVOASYOCHEOV-UHFFFAOYSA-N 2-diethylaminoethanol Chemical compound CCN(CC)CCO BFSVOASYOCHEOV-UHFFFAOYSA-N 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 3
- 239000004471 Glycine Substances 0.000 description 3
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 3
- QNAYBMKLOCPYGJ-REOHCLBHSA-N L-alanine Chemical compound C[C@H](N)C(O)=O QNAYBMKLOCPYGJ-REOHCLBHSA-N 0.000 description 3
- ZDXPYRJPNDTMRX-VKHMYHEASA-N L-glutamine Chemical compound OC(=O)[C@@H](N)CCC(N)=O ZDXPYRJPNDTMRX-VKHMYHEASA-N 0.000 description 3
- KDXKERNSBIXSRK-YFKPBYRVSA-N L-lysine Chemical compound NCCCC[C@H](N)C(O)=O KDXKERNSBIXSRK-YFKPBYRVSA-N 0.000 description 3
- KDXKERNSBIXSRK-UHFFFAOYSA-N Lysine Natural products NCCCCC(N)C(O)=O KDXKERNSBIXSRK-UHFFFAOYSA-N 0.000 description 3
- 239000004472 Lysine Substances 0.000 description 3
- UEEJHVSXFDXPFK-UHFFFAOYSA-N N-dimethylaminoethanol Chemical compound CN(C)CCO UEEJHVSXFDXPFK-UHFFFAOYSA-N 0.000 description 3
- OPKOKAMJFNKNAS-UHFFFAOYSA-N N-methylethanolamine Chemical compound CNCCO OPKOKAMJFNKNAS-UHFFFAOYSA-N 0.000 description 3
- MTCFGRXMJLQNBG-UHFFFAOYSA-N Serine Natural products OCC(N)C(O)=O MTCFGRXMJLQNBG-UHFFFAOYSA-N 0.000 description 3
- 235000004279 alanine Nutrition 0.000 description 3
- 150000001768 cations Chemical class 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 3
- 229960002887 deanol Drugs 0.000 description 3
- ZDXPYRJPNDTMRX-UHFFFAOYSA-N glutamine Natural products OC(=O)C(N)CCC(N)=O ZDXPYRJPNDTMRX-UHFFFAOYSA-N 0.000 description 3
- 230000001965 increasing effect Effects 0.000 description 3
- 229940102253 isopropanolamine Drugs 0.000 description 3
- 230000003020 moisturizing effect Effects 0.000 description 3
- 229910052708 sodium Inorganic materials 0.000 description 3
- 239000011734 sodium Substances 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- 229960004418 trolamine Drugs 0.000 description 3
- 229940035437 1,3-propanediol Drugs 0.000 description 2
- YPFDHNVEDLHUCE-UHFFFAOYSA-N 1,3-propanediol Substances OCCCO YPFDHNVEDLHUCE-UHFFFAOYSA-N 0.000 description 2
- PKPPDYGHKDIKBH-UHFFFAOYSA-N Isopropyl dodecanoic acid Chemical compound CCCCCCCCCC(=O)OC(C)C PKPPDYGHKDIKBH-UHFFFAOYSA-N 0.000 description 2
- 239000004480 active ingredient Substances 0.000 description 2
- 235000001014 amino acid Nutrition 0.000 description 2
- 150000001413 amino acids Chemical class 0.000 description 2
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 2
- 125000002091 cationic group Chemical group 0.000 description 2
- POULHZVOKOAJMA-UHFFFAOYSA-N dodecanoic acid Chemical compound CCCCCCCCCCCC(O)=O POULHZVOKOAJMA-UHFFFAOYSA-N 0.000 description 2
- 230000003670 easy-to-clean Effects 0.000 description 2
- IPCSVZSSVZVIGE-UHFFFAOYSA-N hexadecanoic acid Chemical compound CCCCCCCCCCCCCCCC(O)=O IPCSVZSSVZVIGE-UHFFFAOYSA-N 0.000 description 2
- 239000004615 ingredient Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- BOUCRWJEKAGKKG-UHFFFAOYSA-N n-[3-(diethylaminomethyl)-4-hydroxyphenyl]acetamide Chemical compound CCN(CC)CC1=CC(NC(C)=O)=CC=C1O BOUCRWJEKAGKKG-UHFFFAOYSA-N 0.000 description 2
- 238000001139 pH measurement Methods 0.000 description 2
- 238000005191 phase separation Methods 0.000 description 2
- 229920000166 polytrimethylene carbonate Polymers 0.000 description 2
- 229920002635 polyurethane Polymers 0.000 description 2
- 239000004814 polyurethane Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000012498 ultrapure water Substances 0.000 description 2
- QMMJWQMCMRUYTG-UHFFFAOYSA-N 1,2,4,5-tetrachloro-3-(trifluoromethyl)benzene Chemical compound FC(F)(F)C1=C(Cl)C(Cl)=CC(Cl)=C1Cl QMMJWQMCMRUYTG-UHFFFAOYSA-N 0.000 description 1
- VBICKXHEKHSIBG-UHFFFAOYSA-N 1-monostearoylglycerol Chemical compound CCCCCCCCCCCCCCCCCC(=O)OCC(O)CO VBICKXHEKHSIBG-UHFFFAOYSA-N 0.000 description 1
- TWJNQYPJQDRXPH-UHFFFAOYSA-N 2-cyanobenzohydrazide Chemical compound NNC(=O)C1=CC=CC=C1C#N TWJNQYPJQDRXPH-UHFFFAOYSA-N 0.000 description 1
- QYLYJPDAGRNUBJ-UHFFFAOYSA-N 2-propan-2-yldecanoic acid Chemical compound CCCCCCCCC(C(C)C)C(O)=O QYLYJPDAGRNUBJ-UHFFFAOYSA-N 0.000 description 1
- HIQIXEFWDLTDED-UHFFFAOYSA-N 4-hydroxy-1-piperidin-4-ylpyrrolidin-2-one Chemical compound O=C1CC(O)CN1C1CCNCC1 HIQIXEFWDLTDED-UHFFFAOYSA-N 0.000 description 1
- AMUTYVGRCVFCCD-UHFFFAOYSA-N 5,6-diaminopyridine-3-carboxylic acid Chemical compound NC1=CC(C(O)=O)=CN=C1N AMUTYVGRCVFCCD-UHFFFAOYSA-N 0.000 description 1
- 235000019489 Almond oil Nutrition 0.000 description 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 1
- 241001672694 Citrus reticulata Species 0.000 description 1
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 description 1
- DCXXMTOCNZCJGO-UHFFFAOYSA-N Glycerol trioctadecanoate Natural products CCCCCCCCCCCCCCCCCC(=O)OCC(OC(=O)CCCCCCCCCCCCCCCCC)COC(=O)CCCCCCCCCCCCCCCCC DCXXMTOCNZCJGO-UHFFFAOYSA-N 0.000 description 1
- 239000004166 Lanolin Substances 0.000 description 1
- 239000005639 Lauric acid Substances 0.000 description 1
- 239000004909 Moisturizer Substances 0.000 description 1
- 235000021360 Myristic acid Nutrition 0.000 description 1
- TUNFSRHWOTWDNC-UHFFFAOYSA-N Myristic acid Natural products CCCCCCCCCCCCCC(O)=O TUNFSRHWOTWDNC-UHFFFAOYSA-N 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 235000019482 Palm oil Nutrition 0.000 description 1
- 235000021314 Palmitic acid Nutrition 0.000 description 1
- 235000019483 Peanut oil Nutrition 0.000 description 1
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- 235000019774 Rice Bran oil Nutrition 0.000 description 1
- 235000019485 Safflower oil Nutrition 0.000 description 1
- 235000019486 Sunflower oil Nutrition 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 229910001413 alkali metal ion Inorganic materials 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- 150000008051 alkyl sulfates Chemical class 0.000 description 1
- 239000008168 almond oil Substances 0.000 description 1
- 230000000844 anti-bacterial effect Effects 0.000 description 1
- 229940121363 anti-inflammatory agent Drugs 0.000 description 1
- 239000002260 anti-inflammatory agent Substances 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 235000021302 avocado oil Nutrition 0.000 description 1
- 239000008163 avocado oil Substances 0.000 description 1
- 239000003899 bactericide agent Substances 0.000 description 1
- 238000003287 bathing Methods 0.000 description 1
- 239000007844 bleaching agent Substances 0.000 description 1
- 230000017531 blood circulation Effects 0.000 description 1
- 238000011088 calibration curve Methods 0.000 description 1
- 239000004359 castor oil Substances 0.000 description 1
- 235000019438 castor oil Nutrition 0.000 description 1
- 239000002738 chelating agent Substances 0.000 description 1
- BQFCCCIRTOLPEF-UHFFFAOYSA-N chembl1976978 Chemical compound CC1=CC=CC=C1N=NC1=C(O)C=CC2=CC=CC=C12 BQFCCCIRTOLPEF-UHFFFAOYSA-N 0.000 description 1
- 239000003240 coconut oil Substances 0.000 description 1
- 235000019864 coconut oil Nutrition 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 235000005687 corn oil Nutrition 0.000 description 1
- 239000002285 corn oil Substances 0.000 description 1
- 235000012343 cottonseed oil Nutrition 0.000 description 1
- 239000002385 cottonseed oil Substances 0.000 description 1
- JDRSMPFHFNXQRB-IBEHDNSVSA-N decyl glucoside Chemical compound CCCCCCCCCCO[C@@H]1O[C@H](CO)[C@@H](O)[C@H](O)[C@H]1O JDRSMPFHFNXQRB-IBEHDNSVSA-N 0.000 description 1
- 239000008367 deionised water Substances 0.000 description 1
- 229910021641 deionized water Inorganic materials 0.000 description 1
- 230000001236 detergent effect Effects 0.000 description 1
- GPLRAVKSCUXZTP-UHFFFAOYSA-N diglycerol Chemical compound OCC(O)COCC(O)CO GPLRAVKSCUXZTP-UHFFFAOYSA-N 0.000 description 1
- 239000012153 distilled water Substances 0.000 description 1
- 230000001804 emulsifying effect Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 235000008524 evening primrose extract Nutrition 0.000 description 1
- 239000010475 evening primrose oil Substances 0.000 description 1
- 229940089020 evening primrose oil Drugs 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 125000005456 glyceride group Chemical group 0.000 description 1
- ZEMPKEQAKRGZGQ-XOQCFJPHSA-N glycerol triricinoleate Natural products CCCCCC[C@@H](O)CC=CCCCCCCCC(=O)OC[C@@H](COC(=O)CCCCCCCC=CC[C@@H](O)CCCCCC)OC(=O)CCCCCCCC=CC[C@H](O)CCCCCC ZEMPKEQAKRGZGQ-XOQCFJPHSA-N 0.000 description 1
- 229930182470 glycoside Natural products 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000005457 ice water Substances 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 229910017053 inorganic salt Inorganic materials 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
- 229940039717 lanolin Drugs 0.000 description 1
- 235000019388 lanolin Nutrition 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 230000001333 moisturizer Effects 0.000 description 1
- WQEPLUUGTLDZJY-UHFFFAOYSA-N n-Pentadecanoic acid Natural products CCCCCCCCCCCCCCC(O)=O WQEPLUUGTLDZJY-UHFFFAOYSA-N 0.000 description 1
- 239000007764 o/w emulsion Substances 0.000 description 1
- WWZKQHOCKIZLMA-UHFFFAOYSA-N octanoic acid Chemical compound CCCCCCCC(O)=O WWZKQHOCKIZLMA-UHFFFAOYSA-N 0.000 description 1
- 239000004006 olive oil Substances 0.000 description 1
- 235000008390 olive oil Nutrition 0.000 description 1
- 239000002540 palm oil Substances 0.000 description 1
- 239000000312 peanut oil Substances 0.000 description 1
- 239000002304 perfume Substances 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 239000003755 preservative agent Substances 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 239000008165 rice bran oil Substances 0.000 description 1
- 235000005713 safflower oil Nutrition 0.000 description 1
- 239000003813 safflower oil Substances 0.000 description 1
- 210000004761 scalp Anatomy 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000008159 sesame oil Substances 0.000 description 1
- 235000011803 sesame oil Nutrition 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 239000002600 sunflower oil Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- TUNFSRHWOTWDNC-HKGQFRNVSA-N tetradecanoic acid Chemical compound CCCCCCCCCCCCC[14C](O)=O TUNFSRHWOTWDNC-HKGQFRNVSA-N 0.000 description 1
- DZKXJUASMGQEMA-UHFFFAOYSA-N tetradecyl tetradecanoate Chemical compound CCCCCCCCCCCCCCOC(=O)CCCCCCCCCCCCC DZKXJUASMGQEMA-UHFFFAOYSA-N 0.000 description 1
- LADGBHLMCUINGV-UHFFFAOYSA-N tricaprin Chemical compound CCCCCCCCCC(=O)OCC(OC(=O)CCCCCCCCC)COC(=O)CCCCCCCCC LADGBHLMCUINGV-UHFFFAOYSA-N 0.000 description 1
- 229910021642 ultra pure water Inorganic materials 0.000 description 1
- 235000015112 vegetable and seed oil Nutrition 0.000 description 1
- 239000008158 vegetable oil Substances 0.000 description 1
Landscapes
- Cosmetics (AREA)
Abstract
The invention provides a skin cosmetic which has excellent emulsification stability, is easily washed cleanly, can provide high oil retaining amount of a contained oil agent on skin after being washed cleanly, makes the skin moistened without drying, and has stability, clean washing property and skin care effects; the skin cosmetic contains the following components (A) to (C): (A) 0.9-18.0 wt% of alkyl ether carboxylic acid or salts thereof according to an acid, (B) 0.5-40.0 wt% of an oil agent, and (C) water, wherein the component (A) is obtained by neutralizing alkyl ether carboxylic acid as a raw material by using an alkaline substance, the alkaline substance contains an organic alkali, moreover, in the component (A), the alkyl ether carboxylate obtained from organic alkali neutralization accounts for 24-100 mol%, the ratio of the component (B) to the component (A) is 0.17-3.81, and the ratio of the component (A) to the component (C) is 0.28 or less. Furthermore, the invention also provides a skin care method comprising the steps of applying the skin cosmetic to the skin, massaging and washing cleanly.
Description
Technical Field
The present invention relates to a skin cosmetic and a skin care method.
Background
In modern society, as the pace of life of people is accelerated, there is an increasing demand for two-in-one type of merchandise that is highly convenient and requires both cleansing and skin care.
In order to achieve this object, it has been proposed to add an oil agent to a cleansing agent, for example, patent documents 1 and 2.
Specifically, patent documents 1 and 2 relate to oil-in-water type detergent compositions in which a highly hydrophilic surfactant is used to achieve a detergent effect, and among them, patent document 1 uses ammonium laureth sulfate (example 2) and patent document 2 uses sodium alkyl glyceryl ether sulfonate of C12-C14, but these detergent compositions cannot be stably emulsified unless a stabilizer is used.
Further, patent documents 1 and 2 impart a skin care effect by adding an oil agent and retaining the oil agent on the skin after washing, but since an emulsion formed with a surfactant having high hydrophilicity has poor affinity with the skin, the oil agent is difficult to be effectively retained on the skin.
Documents of the prior art
Patent document
Patent document 1: CN1181006A
Patent document 2: CN1169112A
Disclosure of Invention
The purpose of the present invention is to provide a skin cosmetic which has excellent emulsion stability and is easy to clean, and which can improve the amount of oil agent contained in the skin after cleaning, and which can moisturize the skin without drying, and which has stability, detergency, and skin care effects.
The present inventors have found that in an oil-in-water system to which an oil agent is added, by using a specific alkyl ether carboxylic acid as a raw material and neutralizing a part or all of the alkyl ether carboxylic acid with an alkali substance containing an organic base to form an alkyl ether carboxylate, a skin cosmetic having excellent emulsion stability and capable of improving the amount of the oil agent contained in the skin after washing to moisturize the skin without drying, and having stability, detergency and skin care effects can be obtained. The present invention provides a skin cosmetic, wherein,
comprises the following components (A) to (C):
(A) alkyl ether carboxylic acid and its salt, its content is 0.9-18.0% by weight of acid;
(B) an oil agent, the content of which is 0.5 to 40.0 wt%;
(C) the amount of water is controlled by the amount of water,
the component (A) is obtained by neutralizing an alkyl ether carboxylic acid as a raw material with a base material containing an organic base, wherein the alkyl ether carboxylic acid salt obtained by neutralizing the alkyl ether carboxylic acid with the organic base in the component (A) accounts for 24 to 100 mol%,
the component (B)/the component (A) is 0.17 to 3.81,
the ratio of component (A)/component (C) is 0.28 or less.
Further, the present invention provides a skin care method of applying the skin cosmetic of the present invention to the skin and washing the skin.
Drawings
Fig. 1 is a graph showing the linear relationship of the amount of oil orange SS to a value.
Detailed Description
The components of the skin cosmetic of the present invention will be described in detail below.
[ component (A) ]
The alkyl ether carboxylic acid and its salt as the component (a) used in the present invention are obtained by neutralizing an alkyl ether carboxylic acid as a raw material with a base. After neutralization with the basic substance, the alkyl ether carboxylic acid as a raw material is formed in whole or in part as an alkyl ether carboxylate depending on the concentration of the basic substance used. The "alkyl ether carboxylic acid as a raw material", "alkali substance", and "alkyl ether carboxylic acid obtained after neutralization and a salt thereof" will be specifically described below.
< alkyl ether carboxylic acid as raw Material >
The alkyl ether carboxylic acid as a raw material is represented by the following formula (I).
R-O-(CH2CH2O)nCH2-COOH(I)
(wherein R represents an alkyl group having 10 to 18 carbon atoms, and n represents an average number of 0.5 to 10.)
From the viewpoint of stability and detergency of the skin cosmetic, R is preferably an alkyl group having 12 to 16 carbon atoms or a mixture thereof, and more preferably an alkyl group having 12 to 14 carbon atoms or a mixture thereof. The average molar number of addition of ethylene oxide is preferably 1 to 8, more preferably 2 to 6, and still more preferably 2 to 4.
The alkyl ether carboxylic acid used as a raw material may be 1 or 2 or more, but since the alkyl ether carboxylic acid used as a raw material has low solubility and is not excellent in cleaning property, it is necessary to improve its detergency by neutralization with an alkali. The alkali used for neutralizing the alkyl ether carboxylic acid is usually an alkali metal such as potassium hydroxide or sodium hydroxide, and the formed salt has high hydrophilicity, so that it is difficult to emulsify the oil agent and to cause phase separation, and the alkyl ether carboxylic acid is difficult to increase the amount of the oil agent in the preparation to be retained on the skin. Therefore, in order to produce a stable oil-in-water type emulsion cosmetic, it is necessary to neutralize all or part of the alkyl ether carboxylic acid as a raw material with an alkali substance containing an organic base to form an alkyl ether carboxylic acid salt, thereby making it possible to form a stable emulsion cosmetic which ensures detergency and prevents phase separation, and to increase the amount of an oil agent contained in the emulsion cosmetic after washing (also referred to as "oil retention amount") on the skin.
< alkaline substance >
As a base substance for neutralizing the above-mentioned alkyl ether carboxylic acid as a raw material, it contains an organic base, and optionally contains an inorganic base.
Examples of the organic base include alkanolamines such as diethylaminoethanol, methylaminoethanol, aminomethylpropanol, dimethylaminoethanol, isopropanolamine, triethanolamine, isopropanoldimethylamine, ethylethanolamine, and mixtures thereof; and basic amino acids such as L-arginine, alanine, glycine, serine, lysine, glutamine, mixtures thereof, and the like. Among them, 1 or 2 or more of aminomethylpropanol, triethanolamine and L-arginine are preferable.
Examples of the inorganic base include potassium hydroxide, sodium hydroxide, and a mixture thereof.
The alkali substance of the present invention may contain an organic base as an essential component, and may further contain an inorganic base. The degree of neutralization of the organic base with respect to the alkyl ether carboxylic acid as the raw material (i.e., the molar ratio of the organic base with respect to the alkyl ether carboxylic acid as the raw material) is 0.24 to 1.00 from the viewpoints of stability of the skin cosmetic and the amount of oil retained on the skin by the oil agent contained in the skin cosmetic after washing.
Further, when the alkali substance of the present invention further contains an inorganic base, the degree of neutralization of the inorganic base with respect to the alkyl ether carboxylic acid as the raw material (that is, the molar ratio of the inorganic base with respect to the alkyl ether carboxylic acid as the raw material) is 0 to 0.3, preferably 0 to 0.1, and more preferably not contained, from the viewpoints of stability of the skin cosmetic and the amount of oil remaining on the skin of the oil agent contained in the skin cosmetic after washing. The alkyl ether carboxylate (hereinafter also referred to as "inorganic salt") obtained by neutralization with an inorganic base is preferably 30 mol% or less in the component (a). On the other hand, the proportion of the organic base in the alkali substance is preferably 70 to 100 mol% in total of the component (a) of the alkyl ether carboxylic acid which is neutralized with the organic base and then forms no salt after the alkyl ether carboxylic acid as the raw material is neutralized with the alkali substance.
< alkyl ether carboxylic acid and salt thereof obtained after neutralization >
The alkyl ether carboxylic acid as a raw material is neutralized with an alkali substance to obtain an alkyl ether carboxylic acid and a salt thereof, thereby obtaining the component (a) of the present invention. The composition of the component (a) varies depending on the kind and amount of the alkali used for neutralization, and is classified into the following three types: the portion of the alkyl ether carboxylic acid which does not form a salt among the aforementioned alkyl ether carboxylic acids as the raw material after the neutralization is represented by the following formula (I'); an alkyl ether carboxylate obtained by neutralization with an organic base, and represented by the following formula (II); and an alkyl ether carboxylate obtained by neutralization with an optionally contained inorganic base, and is a substance represented by the following formula (III).
R-O-(CH2CH2O)nCH2-COOH(I’)
R-O-(CH2CH2O)nCH2-COOX(II)
R-O-(CH2CH2O)nCH2-COOX’(III)
(wherein R, n is as defined in the above formula (I), X represents a cationic moiety derived from an organic base, and X' represents a cationic moiety derived from an inorganic base.)
Examples of X include cations derived from alkanolamines, such as diethylaminoethanol, methylaminoethanol, aminomethylpropanol, dimethylaminoethanol, isopropanolamine, triethanolamine, isopropanoldimethylamine, and ethylethanolamine; and cations derived from basic amino acids, such as L-arginine, alanine, glycine, serine, lysine, glutamine, and the like. Among them, X is preferably a cation derived from aminomethylpropanol, triethanolamine, and L-arginine.
Examples of X' include alkali metal ions such as sodium and potassium.
The alkyl ether carboxylic acid and the salt thereof obtained by neutralization are composed of any one of the following four forms (1) to (4) depending on the degree of neutralization of the organic base with respect to the alkyl ether carboxylic acid as the raw material, the ratio of the organic base in the base material, and the like:
(1) a mixture of an alkyl ether carboxylic acid represented by the above formula (I'), and an alkyl ether carboxylate represented by the above formula (II);
(2) a mixture of an alkyl ether carboxylic acid represented by the above formula (I'), an alkyl ether carboxylate represented by the above formula (II), and an alkyl ether carboxylate represented by the above formula (III);
(3) an alkyl ether carboxylate represented by the above formula (II); or,
(4) a mixture of an alkyl ether carboxylate represented by the above formula (II), and an alkyl ether carboxylate represented by the above formula (III).
The organic base has a degree of neutralization of 0.24 to 1 with respect to the alkyl ether carboxylic acid as a raw material, and the component (a) is in any one of the above-described forms (1) to (4), from the viewpoints of stability of the skin cosmetic and an amount of oil remaining on the skin of an oil agent contained in the skin cosmetic after washing. Therefore, the alkyl ether carboxylate (i.e., the alkyl ether carboxylate represented by the formula (II)) obtained by neutralization with an organic base in the component (a) accounts for 24 to 100 mol%.
Further, in the component (a), the total of the alkyl ether carboxylic acid not forming a salt (i.e., the alkyl ether carboxylic acid represented by the formula (I')) and the alkyl ether carboxylate obtained by neutralization with an organic base (i.e., the alkyl ether carboxylate represented by the formula (II)) is 70 to 100 mol%.
From the viewpoint of stability of the skin cosmetic and a cleansing effect, the content of the component (a) in the skin cosmetic of the present invention is 0.9% by weight or more, preferably 1.8% by weight or more, in terms of acid (that is, calculated based on the alkyl ether carboxylic acid as a raw material), and the content of the component (a) is 18.0% by weight or less. From these viewpoints, the content of the component (a) in the skin cosmetic of the present invention is 0.9 to 18.0% by weight, preferably 1.8 to 18.0% by weight.
[ component (B) ]
As the oil agent of the component (B) used in the present invention, a polar oil is used, and specific examples thereof include: glycerides, such as sunflower oil, castor oil, cottonseed oil, peanut oil, corn oil, rice bran oil, rice germ oil, olive oil, almond oil, palm oil, sesame oil, evening primrose oil, safflower oil, avocado oil, coconut oil, jojoba oil and other vegetable oils and derivatives, lanolin and derivatives, and the like; other fatty acid glycerides such as caprylic capric acid glyceride, myristic acid stearin, and the like; and esters formed from alcohols and fatty acids, such as isopropyl myristate, isopropyl palmitate, isooctyl palmitate, octyl stearate (2-ethylhexylstearate), butyl stearate, tetradecyl myristate, isopropyl decanoate, 2-dimethyl-1, 3-propanediol dinonate (2,2-dimethyl propane-1, 3-dimethyldinoanoate), and the like.
From the viewpoint of providing an excellent skin care effect and enhancing the affinity of the oil agent for the skin, thereby achieving a more excellent skin softening effect, the component (B) may be used in the skin cosmetic of the present invention, and is preferably 1 or 2 or more selected from fatty acid glycerides and esters of an alcohol and a fatty acid, more preferably 1 or 2 or more selected from fatty acid glycerides having an alkyl chain of 10 or less carbon atoms and esters of an alcohol and a fatty acid having an alkyl chain of 10 or less carbon atoms, and still more preferably 1 or 2 selected from caprylic capric acid glycerides, 2-dimethyl-1, 3-propanediol dinonyl esters, and isopropyl decanoate.
In the skin cosmetic of the present invention, the content of the component (B) is 0.5% by weight or more, preferably 1.5% by weight or more, and the content of the component (B) is 40.0% by weight or less, preferably 30.0% by weight or less, from the viewpoints of stability of the skin cosmetic and the amount of oil retained on the skin by an oil agent contained in the skin cosmetic when applied to the skin and permeated, and then rinsed with water. From these viewpoints, the content of the component (B) in the skin cosmetic of the present invention is 0.5 to 40.0% by weight, preferably 1.5 to 30.0% by weight.
[ component (C) ]
Examples of the water as the component (C) used in the present invention include deionized water, distilled water, high purity water, and ultrapure water.
In the skin cosmetic of the present invention, the content of the component (C) is the balance (adjusted to 100% by weight) excluding the above components (a) to (B) and other components described later.
The content ratio of the component (B) to the component (a) (component (B)/component (a)) is 0.17 to 3.81, preferably 0.67 to 2.22, from the viewpoints of stability of the skin cosmetic and the amount of oil remaining on the skin when an oil agent contained in the skin cosmetic is applied to the skin and permeated, and then rinsed with water. The content ratio of the component (a) to the component (C) (component (a)/component (C)) is 0.28 or less.
[ other ingredients ]
In addition, in the skin cosmetic of the present invention, components used in general cosmetics, for example, surfactants other than the component (a), moisturizers, whitening agents, blood circulation promoters, anti-inflammatory agents, bactericides, ultraviolet absorbers, colorants, preservatives, antioxidants, perfumes, pH adjusters, chelating agents, and the like may be used in addition to the above components within a range not affecting the effects of the present invention.
Examples of the surfactant other than the component (a) include alkyl sulfates such as sodium polyoxyethylene lauryl ether sulfate and ammonium polyoxyethylene lauryl ether sulfate; fatty acids such as lauric acid, myristic acid, and palmitic acid; alkyl glycosides and the like.
The content of the surfactant other than the component (a) in the skin cosmetic of the present invention is 50% by weight or less, preferably 25% by weight or less, more preferably 10% by weight or less, further preferably 1% by weight or less, particularly preferably 0.1% by weight or less, and most preferably substantially none, from the viewpoints of stability of the skin cosmetic and an amount of oil remaining on the skin of an oil agent contained in the skin cosmetic after washing.
The skin cosmetic of the present invention is produced by the following method, and is thus formulated into an oil-in-water emulsion cosmetic.
First, an alkyl ether carboxylic acid as a raw material is mixed with the component (B) to form an oil phase. The oil phase may be heated at 50 ℃ or higher, preferably 70 to 100 ℃ depending on the case. Next, an alkali substance is mixed with the component (C) to form an aqueous phase. The aqueous phase may be heated at 50 ℃ or higher, preferably 70 to 100 ℃ depending on the case. Next, the oil phase is added to the aqueous phase with stirring, the alkyl ether carboxylic acid as a raw material is neutralized with an alkali substance to obtain component (a), and the system is emulsified to form an oil-in-water type emulsified cosmetic. Cooling the emulsified cosmetic to 10 ℃ to less than 50 ℃ while heating the oil phase, the water phase, or both.
The skin cosmetic of the present invention has a pH at 25 ℃ of 4.3 or more, preferably 5.18 or more as a lower limit, and 7.52 or less, preferably 7.1 or less as an upper limit. From these viewpoints, the skin cosmetic of the present invention has a pH of 4.3 to 7.52, preferably 5.18 to 7.1.
The skin cosmetic of the present invention is useful as a skin cosmetic such as a face cleanser, a bathing agent, a pack, etc. The skin cosmetic of the present invention has excellent emulsion stability. When the skin cosmetic of the present invention is used as a cleansing agent, the cleansing is easy, and the amount of oil retained on the skin by the oil agent contained in the skin cosmetic after cleansing can be increased, so that the skin can be moisturized without dryness, and a good skin care effect can be achieved.
The skin cosmetic of the present invention can be applied to the skin, preferably to any part of the face, body, hand and foot other than the scalp.
[ skin Care method ]
The skin cosmetic of the present invention can be applied to the skin, massaged and washed, so that dirt of the skin can be removed, and an oil agent can be properly retained, thereby achieving skin care. The skin cosmetic of the present invention may be used directly by hand or with a tool such as a sponge.
Further, the present invention provides a washing method in which the skin cosmetic of the present invention is applied to the skin, and the amount of oil retained on the skin by an oil agent contained in the skin cosmetic can be increased after washing, so that the skin is moistened and does not easily dry. Further, the present invention provides a method for moisturizing skin, wherein the skin cosmetic of the present invention is applied to skin to moisturize the skin.
Preferred embodiments of the present invention are further disclosed below with respect to the above-described embodiments.
<1> a skin cosmetic, wherein,
comprises the following components (A) to (C):
(A) alkyl ether carboxylic acid and its salt, its content is 0.9-18.0% by weight of acid;
(B) an oil agent, the content of which is 0.5 to 40.0 wt%;
(C) the amount of water is controlled by the amount of water,
the component (A) is obtained by neutralizing an alkyl ether carboxylic acid as a raw material with a base material containing an organic base, wherein the alkyl ether carboxylic acid salt obtained by neutralizing the alkyl ether carboxylic acid with the organic base in the component (A) accounts for 24 to 100 mol%,
the component (B)/the component (A) is 0.17 to 3.81,
the ratio of component (A)/component (C) is 0.28 or less.
<2> the skin cosmetic according to <1>, wherein the component (A) contains an inorganic base, and the alkyl ether carboxylate obtained by neutralization with an inorganic base accounts for 30 mol% or less.
<3> the skin cosmetic according to <1> or <2>, wherein the alkyl group of the alkyl ether carboxylic acid as the raw material has 10 to 18 carbon atoms, preferably 12 to 16 carbon atoms, and more preferably 12 to 14 carbon atoms.
<4> the skin cosmetic according to any one of <1> to <3>, wherein the organic base is selected from the group consisting of diethylaminoethanol, methylaminoethanol, aminomethylpropanol, dimethylaminoethanol, isopropanolamine, triethanolamine, isopropanoldimethylamine, and ethylethanolamine; 1 or 2 or more of L-arginine, alanine, glycine, serine, lysine and glutamine, preferably 1 or 2 or more selected from the group consisting of aminomethyl propanol, triethanolamine and L-arginine.
<5> the skin cosmetic according to any one of <1> to <4>, wherein the content of the component (A) is 1.8 to 18.0% by weight.
<6> the skin cosmetic according to any one of <1> to <5>, wherein the component (B) is a polar oil, preferably 1 or 2 or more selected from the group consisting of a fatty acid glyceride having an alkyl chain of 10 or less carbon atoms and an ester of an alcohol and a fatty acid having an alkyl chain of 10 or less carbon atoms, more preferably 1 or 2 selected from the group consisting of a caprylic capric acid glyceride and an isopropyl decanoic acid ester.
<7> the skin cosmetic according to any one of <1> to <6>, wherein the content of the component (B) is 1.5 to 30.0% by weight.
<8> the skin cosmetic according to any one of <1> to <7>, wherein the component (B)/the component (A)) is 0.67 to 2.22.
<9> the skin cosmetic according to any one of <1> to <8>, wherein the skin cosmetic has a pH of 4.3 to 7.52, preferably 5.18 to 7.1 at 25 ℃.
<10> the skin cosmetic according to any one of <1> to <9>, wherein the skin cosmetic is obtained by the following production process:
first, an alkyl ether carboxylic acid as a raw material is mixed with the component (B) to form an oil phase, next, an alkali substance is mixed with the component (C) to form an aqueous phase, next, the oil phase is added to the aqueous phase, the alkyl ether carboxylic acid as a raw material is neutralized with the alkali substance to obtain the component (a), and further, the system is emulsified to form an oil-in-water type emulsified cosmetic.
<11> A skin care method, wherein the skin cosmetic according to any one of <1> to <10> is applied to the skin, massaged, and washed.
<12> A cleansing method wherein the skin cosmetic according to any one of <1> to <10> is applied to the skin and the skin is cleansed.
<13> A method for moisturizing skin, wherein the skin cosmetic according to any one of <1> to <10> is applied to skin to moisturize the skin.
<14> a method for producing a skin cosmetic, comprising the steps of:
a step of mixing an alkyl ether carboxylic acid as a raw material with the component (B) to form an oil phase, and mixing an alkali substance with the component (C) to form an aqueous phase;
a step of adding an oil phase to the aqueous phase obtained in the above step, and neutralizing the alkyl ether carboxylic acid as a raw material with an alkali substance to obtain a component (a);
and (d) emulsifying the mixture of the aqueous phase and the oil phase obtained in the above step.
[ examples ]
The present invention will be described in more detail below with reference to examples and comparative examples, but the present invention is not limited to the following examples. The amount of each component is% by weight.
Examples
Examples 1 to 32 and comparative examples 1 to 26
Skin cosmetics having compositions shown in tables 1 to 8 were produced by the following methods, and the stability of the obtained skin cosmetics (stability immediately after preparation and stability after standing at room temperature for 3 months) and the amount of oil retained on the skin by an oil agent contained in the skin cosmetics after washing were evaluated based on the following criteria. The results are shown in tables 1 to 8.
< preparation method >
First, alkyl ether carboxylic acid as a raw material and the component (B) were added to a beaker at 75 ℃, and stirred at a rotation speed of 200rpm until uniformly mixed to form an oil phase a.
Next, at 75 ℃, the base material and ingredient (C) were added to the beaker at 200rpm until uniformly mixed to form aqueous phase B.
Next, the oil phase a was added to the water phase B, and while stirring at 200rpm for 20 minutes, the alkyl ether carboxylic acid as a raw material was neutralized with an alkali substance to obtain component (a), and the system was placed in an ice-water bath to be cooled to 35 ℃.
< measurement of pH >
100mL of the obtained skin cosmetic was filled in a beaker and adjusted to 25 ℃ in a thermostatic bath at 25 ℃. The pH measurement electrode was immersed in the sample adjusted to a constant temperature for 3 minutes to measure the pH. The pH meter used was pHMETERHM-30G (manufactured by DKK TOACORPORATION).
< evaluation criteria >
1.Stability of skin cosmetic
(1) Stability (just prepared)
The skin cosmetic composition just prepared was visually observed and evaluated based on the following criteria.
Good: very uniform and no delamination.
And (D-good): there is substantially no delamination.
And (delta): and (5) layering.
A tangle-solidup: either completely separate or become solid.
(2) Stability (standing at room temperature for 3 months)
The above skin cosmetic was left at room temperature for 3 months and then visually observed and evaluated based on the following criteria.
Good: very uniform and no delamination.
And (D-good): there is substantially no delamination.
And (delta): and (5) layering.
A tangle-solidup: either completely separate or become solid.
2.Oil retaining amount of oil agent contained in skin cosmetic after washing
(1) Sample preparation for testing
Skin cosmetics were prepared in the same manner as in examples except that orange SS was added to component (B) in an amount of 0.5% of the content of component (B), and used as test samples to be described later. Further, the total amount of water was adjusted to 100%.
(2) Instrument and materials for testing
A color difference meter: spectrophotometer CM-2500D, manufactured by KONICAMINOLASENSING, INC.
Artificial skin: polyurethane (Polyurethane), milky white, manufactured by okamoto kasei ihinc.
(3) Test method
a is a red value measured by a colorimeter, and a is0And a1To mark the red values measured before and after the test on the test specimens. Oil orange SS is a dye that dissolves in oil only and is used in this test to indicate the amount of oil retained.
First, 3 × 5cm of untreated artificial skin was taken and the a value was measured with a colorimeter and marked as a0。
Next, 50mg of water was dropped on the artificial skin and spread evenly to form a water film. A sample of 50mg of skin cosmetic was dropped on the water film and massaged for 30 seconds, then rinsed with water for 10 seconds, lightly pressed with a wiping cloth (KIMTOWEL) to draw up moisture, and the a value was measured with a color difference meter and labeled as a1。
The amount of oil retained on the skin by the oil agent contained in the skin cosmetic after the skin cosmetic was applied to the skin and washed off was determined by the following formula.
The retained oil content is equal to the amount of the oil orange SS/0.5%
＝(a*1-a*0)/4.6248/0.5％
(a denotes chromaticity, determined by CIE (international commission on illumination) in 1976 and by the color system of lsa b normalized by JISZ 8729.)
The remaining oil amount was determined by preparing a calibration curve as follows.
Taking 3 pieces of untreated artificial skin 3 cm in size of 3 × 5cm, respectively, and uniformly spreading Citrus reticulata SS to 0.5 μ g/cm2、1μg/cm2、2μg/cm2. After drying, the a values were determined with a colorimeter. As shown in fig. 1, the amount of oil orange SS is linear with the value of a. Specifically, the amount of oil orange SS is a/4.6248.
TABLE 1
As is clear from table 1, in the skin cosmetic compositions of comparative examples, since the specific alkyl ether carboxylic acid as the raw material was not used, or the specific alkyl ether carboxylic acid as the raw material was not neutralized with an alkali substance containing an organic base as in the present invention, the evaluation of both the stability (just prepared) and the retained oil amount was inferior to that of examples.
TABLE 2
As is clear from table 2, in the skin cosmetics of the comparative examples, since the used alkali substances did not contain an organic base as in the present invention, the evaluation of both stability (just prepared) and retained oil amount was inferior to the examples.
As is clear from table 3, in the skin cosmetic compositions of the comparative examples, since the degree of neutralization of the organic base with respect to the alkyl ether carboxylic acid as the raw material was out of the range of the present invention, that is, the organic base was excessive with respect to the alkyl ether carboxylic acid as the raw material, both the evaluation concerning stability (just prepared) and the evaluation concerning the amount of retained oil were inferior to those of the examples.
As is clear from table 4, in the skin cosmetic of the comparative example, the ratio of the base substance used was such that the alkyl ether carboxylate obtained by neutralization with an inorganic base in the component (a) exceeded 30 mol%, that is, outside the range shown in the present invention (the alkyl ether carboxylate obtained by neutralization with an inorganic base in the component (a) accounted for 30 mol% or less), and therefore, the evaluation of both the stability (just prepared) and the retained oil amount was inferior to the examples.
TABLE 5
As is clear from table 5, in the skin cosmetics of the comparative examples, since the oil agent as in the present invention was not used as the component (B), the evaluation of both stability (just prepared) and stability (left at room temperature for 3 months) was inferior to that of the examples.
TABLE 6
TABLE 7
As is clear from tables 6 and 7, the skin cosmetics of the examples can achieve excellent stability (just after preparation), stability (standing at room temperature for 3 months), and retained oil amount, and therefore the present invention provides a skin cosmetic which is excellent in emulsion stability, easy to clean, and capable of improving the retained amount of oil agent on the skin after cleaning, and moisturizing and not drying the skin, and which achieves stability, detergency, and skin care effect.
As is clear from table 8, in the skin cosmetics of the comparative examples, since B/a and/or a/C were out of the range of the present invention, any evaluation concerning stability (as prepared) and retained oil amount was inferior to that of the examples.
Comparative example 27
The skin cosmetic of comparative example 27 used the same composition as in example 1, but prepared as follows.
First, component (B) (caprylic/capric triglyceride) was added to a beaker at 75 ℃ as oil phase a'.
Next, an alkyl ether carboxylic acid (polyoxyethylene (6) lauryl ether carboxylic acid) and an alkali substance (triethanolamine) as raw materials were added to a beaker together with the component (C) (water) at 75 ℃ and the raw materials were neutralized with the alkali substance by stirring at 200rpm to obtain the component (A), and a transparent aqueous phase B' was formed.
Subsequently, the oil phase A 'was added to the water phase B' and stirred at 200rpm for 20 minutes to form an oil-in-water type emulsion cosmetic.
The oil-in-water type emulsion cosmetic obtained by the above preparation was evaluated for stability (just prepared), and the evaluation result was "a (separation).
From this fact, it was found that the skin cosmetic of comparative example 27 was inferior to example 1 in the evaluation of stability (just prepared) because the preparation method according to the present invention was not adopted.
The components in tables 1 to 8 are as follows.
*1: AKYPRLM45CA (90%), manufactured by Kao Chemicals GmbH.
*2: AKYPLM26-C (86%), manufactured by Kao chemical smbH.
*3: COCONADMT, manufactured by Kaocorporation.
*4: EMAL270S, manufactured by KAOChemical corporation Shanghai
*5: EMAL170S-A, manufactured by KAOChemical corporation Shanghai
*6: pamac 98-12, manufactured by acidcheminterationalsdn.
*7: PALMAC98-14, manufactured by ACIDCCHEMICINTERNATIONALSND.
*8: pamac 98-16, manufactured by acidcheminterationalsdn.
*9: AG-10LK, manufactured by Kaocorporation.
*10: hybridsundownerseedoil, manufactured by YOKOZEKIOIL & Fatindustroyco, LTD, contains 100% of effective components.
*11: EXCEPARLIPP, manufactured by Kaocorporation, has an effective component content of 100%.
*12: ESTEMOLN-01, manufactured by the NisshinOilliOGroup, Ltd., and having an effective component content of 100%.
*13: EXCEPARLSS, manufactured by Kaocorporation, contains 100% of the active ingredient.
*14: HICALK-350, manufactured by KANEDACo., Ltd., contains 100% of the effective component.
*15: SILICONESH245FLUID, manufactured by Dow Corning Toray company, Limited, has an active ingredient content of 100%.
Claims (8)
1. A skin cosmetic is prepared by mixing, in a solvent,
comprises the following components (A) to (C):
(A) alkyl ether carboxylic acid and its salt, its content is 0.9-18.0% by weight of acid;
(B) an oil agent, the content of which is 0.5 to 40.0 wt%;
(C) the amount of water is controlled by the amount of water,
the component (A) is obtained by neutralizing an alkyl ether carboxylic acid as a raw material with a base material containing an organic base, wherein the alkyl ether carboxylic acid salt obtained by neutralizing the alkyl ether carboxylic acid with the organic base in the component (A) accounts for 24 to 100 mol%,
the component (B)/the component (A) is 0.17 to 3.81,
the ratio of component (A)/component (C) is 0.28 or less.
2. The skin cosmetic according to claim 1,
the alkali substance contains an inorganic base, and the alkyl ether carboxylate obtained by neutralization with the inorganic base in the component (a) accounts for 30 mol% or less.
3. The skin cosmetic according to claim 1 or 2, wherein,
the alkyl ether carboxylic acid as a raw material has an alkyl group having 10 to 18 carbon atoms.
4. The skin cosmetic according to any one of claims 1 to 3,
the organic alkali is 1 or more than 2 selected from amino methyl propanol, triethanolamine and L-arginine.
5. The skin cosmetic according to any one of claims 1 to 4,
the oil agent of the component (B) is a polar oil.
6. The skin cosmetic according to claim 5,
the oil agent of the component (B) is a fatty acid glyceride having an alkyl chain of 10 or less carbon atoms.
7. The skin cosmetic according to any one of claims 1 to 6,
the skin cosmetic is obtained by the following preparation process:
the alkyl ether carboxylic acid as a raw material is mixed with the component (B) to form an oil phase, and an alkali substance is mixed with the component (C) to form an aqueous phase, and then the oil phase is added to the aqueous phase to neutralize the alkyl ether carboxylic acid as a raw material with the alkali substance to obtain the component (a), and the system is emulsified to form the oil-in-water type emulsified cosmetic.
8. A method of skin care, wherein,
applying the skin cosmetic as defined in any one of claims 1 to 7 to the skin, massaging and washing.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2015/084593 WO2016093292A1 (en) | 2014-12-11 | 2015-12-10 | Skin cosmetic, and skin care method |
| TW104141723A TW201628596A (en) | 2014-12-11 | 2015-12-11 | Skin cosmetic, and skin care method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410768839X | 2014-12-11 | ||
| CN201410768839 | 2014-12-11 |
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Cited By (1)
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|---|---|---|---|---|
| CN108653118A (en) * | 2018-08-15 | 2018-10-16 | 杭州满天颂生物科技有限公司 | Cosmetics and preparation method thereof with maintenance skin effect |
-
2015
- 2015-08-26 CN CN201510530721.8A patent/CN105686962A/en active Pending
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| CN108653118A (en) * | 2018-08-15 | 2018-10-16 | 杭州满天颂生物科技有限公司 | Cosmetics and preparation method thereof with maintenance skin effect |
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