CN115444785A - 水性化妆品 - Google Patents
水性化妆品 Download PDFInfo
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- CN115444785A CN115444785A CN202211102301.6A CN202211102301A CN115444785A CN 115444785 A CN115444785 A CN 115444785A CN 202211102301 A CN202211102301 A CN 202211102301A CN 115444785 A CN115444785 A CN 115444785A
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- powder
- hydrophobic
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- aqueous
- treatment
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Landscapes
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- Cosmetics (AREA)
Abstract
本发明的目的在于，提供一种水性化妆品，其是使疏水性粉末直接分散于水性化妆品的水相而成的，该水性化妆品保持水性化妆品原有的水润使用感，并且具有疏水性粉末特有的优异的光滑性、耐水性、化妆持久性。本发明的主旨在于一种水性化妆品，其特征在于，含有：(A)0.1～5质量％的HLB(Si)为5～14的聚醚改性有机硅、(B)亲水性增稠剂的1种或2种以上、(C)多元醇和/或乙醇、(D)疏水性粉末，其为选自用除金属皂以外的物质进行了疏水化处理的金属氧化物、疏水化的有机粉末、有机硅粉末中的1种或2种以上，并且(D)疏水性粉末分散于水相。
Description
本发明为申请号为201580021925.7、发明名称为“水性化妆品”、申请日为2015年06月30日的中国专利申请的分案申请。
技术领域
本发明涉及水性化妆品。更详细而言，涉及使疏水性粉末直接分散于水性化妆品的水相而成的水性化妆品，该水性化妆品保持水性化妆品原有的水润使用感，并且具有疏水性粉末特有的优异的光滑性、耐水性、化妆持久性。
背景技术
水包油型乳化组合物涂布于肌肤时可获得清爽且水润的触感，因此，广泛用作直接应用于肌肤的皮肤化妆品等皮肤外用剂的基质。其中，在皮肤护理、身体护理中，保护皮肤不受紫外线损害逐渐成为日常，关于这种UV护理化妆品，将水包油型乳化组合物作为基质的重要性也正在增大。
另一方面，已知金属氧化物粉末具有作为保护皮肤不受紫外线损害的紫外线散射剂的功能，除此之外，还具有提高涂布时的使用性、或遮盖肌肤的颜色、色斑、雀斑等的功能，一直以来广泛地配混于各种化妆品中。近年来，为了提高无发涩感、耐水性、化妆持久性、分散性等，使用对表面进行了疏水化处理的金属氧化物。
在将疏水性细颗粒氧化钛、疏水性细颗粒氧化锌等疏水化处理金属氧化物粉末配混在水包油型乳化组合物中时，通常使用低HLB的分散剂、粉碎能量强的湿式珠磨机等特别的分散设备以使分散于挥发性油分中，使其乳化。但是，为了大量配混粉末以获得充分的紫外线防御能力，需要大量配混用于使该粉末分散的油分，其结果，有时使用性变得油腻，会损害水包油型乳化组合物原本具有的水润性。
例如，专利文献1中记载了一种防晒水包油型乳化化妆品，为了不使用特别的分散装置而使进行了疏水化处理的氧化锌稳定地分散，在氧化锌的疏水化处理中使用特定的化合物(辛基三乙氧基硅烷或二甲基聚硅氧烷)，用特定的分散剂(含羧基的有机硅或糖酯)使其分散于特定的油分(液态高级脂肪酸)中。但是，为了使进行了疏水化处理的氧化锌稳定地分散，需要大量的挥发性油分，结果，总油分量增加，故难以实现水润的使用性。
另外，专利文献2中记载了，为了使进行了疏水化处理的粉末颗粒稳定地配混于使用了离子性水溶性高分子化合物作为增稠剂的水包油型乳化组合物中，将粉末颗粒制成为疏水性粉末颗粒，进而，使特定的聚醚改性有机硅配混于油相来防止离子溶出。
在该组合物中，聚醚改性有机硅作为用于使包含硅油和疏水性粉末颗粒的油相凝胶化的凝胶化剂发挥作用，通过防止离子自油相中的疏水性粉末颗粒溶出，使基于水相中的离子性高分子的增稠稳定化。但是，与专利文献1相同，由于油相中的粉末的分散是通过以往的机械力而进行的，因此，为了使疏水性粉末颗粒充分地分散，必须配混大量的硅油作为分散介质，总油分量增加，难以实现水润的使用性。进而，有时因疏水性粉末颗粒吸收油相中的油而损害疏水性粉末特有的光滑的使用感。
另一方面，除了上述专利文献2之外，也进行了使用聚醚改性有机硅来实现水包油型乳化组合物的稳定化的尝试(专利文献3～5)。专利文献3中记载了，通过将聚醚改性有机硅、规定量的体质颜料、以及在UV-A区域具有吸收能的紫外线吸收剂组合并进行配混，从而实现为不发粘且水润的使用感、稳定且较高的SPF。专利文献4中记载了，通过使用HLB(Si)5～10的聚醚改性有机硅作为表面活性剂，进而配混规定量的乙醇、亲水性增稠剂、以及多元醇而制成水包油型乳化物，从而在涂布于皮肤后能够得到优异的耐水性。专利文献5中记载了，在与专利文献4相同的稳定体系中，通过将油溶性紫外线吸收剂的水分散物配混于水相，与将该紫外线吸收剂配混于油相的情况相比，紫外线防御效果提高。
但是，专利文献3～5中，对于大量配混疏水化处理金属氧化物的方法均没有任何启示。相反，专利文献3中表明，配混进行了疏水化处理的滑石时，与配混未进行疏水化处理的滑石的情况相比，乳化稳定性变差(比较例4)，专利文献5中记载了，配混细颗粒氧化钛时，使用性降低(比较例2)。
现有技术文献
专利文献
专利文献1：日本特开2012-111726号公报
专利文献2：国际公开第2004/006871号
专利文献3：日本特开2012-162515号公报
专利文献4：日本特开2010-254673号公报
专利文献5：日本特开2011-236202号公报
发明内容
发明要解决的问题
本发明是鉴于前述现有技术的缺点而完成的，其目的在于，提供一种水性化妆品，其不会损害水性化妆品原本具有的水润使用感，而具有疏水性粉末特有的优异的光滑性、耐水性、化妆持久性。
用于解决问题的方案
本发明人等为了解决前述课题，进行了深入研究，结果发现：在配混有具有特定的HLB(Si)的聚醚改性有机硅、亲水性增稠剂、多元醇和/或乙醇的水性化妆品中，可以使通常配混于油相的疏水性粉末均匀且稳定地分散于水相，由此，能够维持水润的使用性，并且实现优异的光滑性、耐水性、化妆持久性，从而完成了本发明。
即，本发明的主旨在于一种水性化妆品，其特征在于，含有：
(A)0.1～5质量％的HLB(Si)为5～14的聚醚改性有机硅、
(B)亲水性增稠剂的1种或2种以上、
(C)多元醇和/或乙醇、
(D)疏水性粉末，其为选自用除金属皂以外的物质进行了疏水化处理的金属氧化物、疏水性的有机粉末、有机硅粉末中的1种或2种以上，
并且(D)疏水性粉末分散于水相。
发明的效果
本发明的水性化妆品通过将HLB(Si)为5～14的(A)聚醚改性有机硅与(B)亲水性增稠剂以及(C)多元醇和/或乙醇组合使用，能够使(D)疏水性粉末均匀且稳定地分散于水性化妆品的水相。因此，不需要为了使(D)疏水性粉末分散而配混以往所配混的大量的挥发性油分、硅油，可以实现水润的使用性。另外，通过将疏水性粉末配混于水相而并非油相，可以实现光滑的使用感和优异的耐水性、化妆持久性。
具体实施方式
本发明的水性化妆品含有(A)HLB(Si)为5～14的聚醚改性有机硅、(B)亲水性增稠剂、(C)多元醇和/或乙醇、以及(D)特定的疏水性粉末作为必要成分。以下，对本发明进行详细说明。
需要说明的是，本发明中，水性化妆品是指，水占有化妆品整体的50质量％以上的化妆品，包括：(1)基质仅包含水性成分的化妆品(实质上包含水性成分和粉末成分的化妆品)的情况、以及(2)将水性成分作为外相的水包油型乳化化妆品的情况。即，“粉末分散于水相”在前述(1)的情况中是指分散于化妆品整体、在前述(2)的情况中是指分散于外相(水相)。
<(A)HLB(Si)为5～14的聚醚改性有机硅>
本发明的水性化妆品中的(A)聚醚改性有机硅为具有选自聚氧亚乙基(POE)和聚氧亚丙基(POP)的聚氧亚烷基的有机硅衍生物。特别是，优选下述通式所示的聚醚改性有机硅。
上述式中，m为1～1000、优选为5～500，n为1～40。另外，m:n优选为200:1～1:1。另外，a为5～50，b为0～50。
对于聚醚改性有机硅的分子量没有特别限制，优选为3000～60000、特别优选为3000～40000的范围。通过使用低分子量的聚醚改性有机硅，可以实现特别优异的使用性。
本发明中使用的聚醚改性有机硅选自其HLB(Si)为5～14、优选为7～14的聚醚改性有机硅。此处所谓的HLB(Si)为通过下述计算式求出的值。
[数学式1]
(A)聚醚改性有机硅可以使用选自以往化妆品等中所使用的聚醚改性有机硅中的1种或2种以上。作为具体例，可举出：PEG/PPG-19/19聚二甲基硅氧烷、PEG/PPG-30/10聚二甲基硅氧烷、PEG-12聚二甲基硅氧烷、PEG-11甲醚聚二甲基硅氧烷等。
本发明中使用的(A)聚醚改性有机硅也可以为市售品，例如可举出：·商品名BY11-030(Dow Corning Toray Co.,Ltd.制造：PEG/PPG-19/19聚二甲基硅氧烷、HLB(Si)＝7.7)、
·商品名SH3773M(Dow Corning Toray Co.,Ltd.制造：PEG-12聚二甲基硅氧烷、HLB(Si)＝7.7)、
·商品名BY25-339(Dow Corning Toray Co.,Ltd.制造：PEG/PPG-30/10聚二甲基硅氧烷、HLB(Si)＝12.2)、
·商品名KF6011(信越化学工业株式会社制造：PEG-11甲醚聚二甲基硅氧烷、HLB(Si)＝12.7)等。
(A)聚醚改性有机硅的配混量相对于本发明的水性化妆品总量，优选为0.1质量％以上、0.2质量％以上、0.3质量％以上、0.4质量％以上或0.5质量％以上，并且为5质量％以下、4质量％以下或3质量％以下。作为具体的配混量范围，为0.1～5质量％、优选为0.5～5质量％、更优选为0.5～3质量％。配混量低于0.1质量％时，有时无法获得均匀分散有(D)疏水性粉末的稳定的组合物；超过5质量％进行配混时，使用性有时发粘。
<(B)亲水性增稠剂>
本发明的水性化妆品中的(B)亲水性增稠剂只要为通常化妆品中使用的物质，就没有特别限制。例如可举出：天然或半合成的水溶性高分子、合成的水溶性高分子、无机的水溶性高分子等。
作为天然或半合成的水溶性高分子，优选使用多糖类及其衍生物(包括水溶性烷基取代多糖衍生物)。作为具体例，例如可举出：阿拉伯树胶、黄蓍胶、半乳聚糖、瓜尔胶、角豆树胶、刺梧桐胶、卡拉胶、果胶、琼脂、榅桲籽(榅桲)、海藻胶(褐藻提取物)、淀粉(稻米、玉米、马铃薯、小麦)、甘草酸等植物系高分子；黄原胶、葡聚糖、琥珀酰聚糖、普鲁兰多糖等微生物系高分子等；羧甲基淀粉、甲基羟丙基淀粉等淀粉系高分子；甲基纤维素、硝化纤维素、乙基纤维素、甲基羟丙基纤维素、羟乙基纤维素、纤维素硫酸钠、羟丙基纤维素、羧甲基纤维素钠(CMC)、结晶纤维素、纤维素末等纤维素系高分子；海藻酸钠、丙二醇海藻酸酯等海藻酸系高分子等。
合成的水溶性高分子包含离子性或非离子性的水溶性高分子、例如可举出：聚乙烯醇、聚乙烯甲醚、聚乙烯吡咯烷酮、羧乙烯聚合物(卡波姆)等乙烯系高分子；聚乙二醇(分子量1500、4000、6000)等聚氧亚乙基系高分子；聚氧乙烯聚氧丙烯共聚物共聚系高分子；聚丙烯酸钠、聚丙烯酸乙酯、聚丙烯酰胺化合物、丙烯酸·甲基丙烯酸烷基酯共聚物(商品名“Pemulen TR-1”)等丙烯酸类高分子；聚乙烯亚胺、阳离子聚合物等。
聚丙烯酰胺化合物特别包含由含有选自2-丙烯酰胺-2-甲基丙磺酸(以下有时简称为“AMPS”。)、丙烯酸及其衍生物中的1种或2种以上作为构成单元的均聚物、共聚物或交联聚合物形成的聚丙烯酰胺化合物。
作为这种聚丙烯酰胺化合物的具体例，可举出：乙烯基吡咯烷酮/2-丙烯酰胺-2-甲基丙磺酸(盐)共聚物、二甲基丙烯酰胺/2-丙烯酰胺-2-甲基丙磺酸(盐)共聚物、丙烯酰胺/2-丙烯酰胺-2-甲基丙磺酸共聚物、以亚甲基双丙烯酰胺进行交联得到的二甲基丙烯酰胺/2-丙烯酰胺-2-甲基丙磺酸的交联聚合物、聚丙烯酰胺与聚丙烯酸钠的混合物、丙烯酸钠/2-丙烯酰胺-2-甲基丙磺酸共聚物、丙烯酸羟乙酯/2-丙烯酰胺-2-甲基丙磺酸(盐)共聚物、聚丙烯酸铵、聚丙烯酰胺/丙烯酸铵共聚物、丙烯酰胺/丙烯酸钠共聚物等。但是，并不限定于这些示例。
作为前述的盐，可举出：碱金属盐(例如钙盐、镁盐等)、铵盐、有机胺类盐(例如单乙醇胺盐、二乙醇胺盐、三乙醇胺盐、三乙醇胺盐等)等作为优选例。这些聚丙烯酰胺化合物可以使用1种或2种以上。
这些聚丙烯酰胺化合物可以为合成的也可以为市售品。例如，作为乙烯基吡咯烷酮/2-丙烯酰胺-2-甲基丙磺酸(盐)共聚物，可举出：“ARISTOFLEX AVC”(ClariantCorporation制造)；作为丙烯酸钠/2-丙烯酰胺-2-甲基丙磺酸(盐)共聚物，可举出：“SIMULGEL EG”(SEPIC CORPORATION制造)、“SIMULGEL EPG”(SEPIC CORPORATION制造)；作为丙烯酰胺/2-丙烯酰胺-2-甲基丙磺酸钠盐共聚物，可举出：“SIMULGEL 600”(SEPICCORPORATION制造)；作为丙烯酰胺/2-丙烯酰胺-2-甲基丙磺酸(盐)，可举出：“SEPIGEL305”(SEPIC CORPORATION制造)、“SEPIGEL 501”(SEPIC CORPORATION制造)；作为2-丙烯酰胺-2-甲基丙磺酸钠盐的均聚物，可举出：“Hostacerin AMPS”(Clariant Corporation制造)、“SIMULGEL 800”(SEPIC CORPORATION制造)等；作为二甲基丙烯酰胺/2-丙烯酰胺-2-甲基丙磺酸，可举出：“SU-POLYMER G-1”(TOHO Chemical Industry Co.,Ltd.制造)等。
本发明中，特别优选使用二甲基丙烯酰胺与丙烯酰基二甲基牛磺酸盐的交联聚合物，具体而言，可举出：(二甲基丙烯酰胺/丙烯酰基二甲基牛磺酸钠)交联聚合物。
作为无机的水溶性高分子，例如可举出：膨润土、硅酸铝镁(商品名“VEEGUM”)、合成锂皂石(Laponite)、锂蒙脱石(Hectorite)、硅酸酐等。
作为本发明的(B)亲水性增稠剂，可以配混1种或组合2种以上而配混。特别是，优选含有选自琥珀酰聚糖、黄原胶、羧甲基纤维素等多糖类或其衍生物以及聚丙烯酰胺化合物中的至少1种。
本发明的水性化妆品中的(B)亲水性增稠剂得配混量相对于化妆品总量，优选为0.01质量％以上、0.03质量％以上、0.05质量％以上、0.08质量％以上或0.1质量％以上，并且为3质量％以下、2.5质量％以下、2质量％以下或1质量％以下。作为具体的配混量范围，为0.01～3质量％、优选为0.05～2质量％、更优选为0.1～1质量％。若配混量低于0.01质量％，则有时无法获得均匀分散有疏水性粉末的稳定的组合物，若超过3质量％进行配混，则有时在涂布时成为厚重的触感。
<(C)多元醇和/或乙醇>
本发明的水性化妆品还含有(C)多元醇和/或乙醇作为必要成分。
本发明中使用的多元醇只要为通常化妆品中使用的物质，就没有特别限制，例如可举出：甘油、1,3-丁二醇、二丙二醇、丙二醇等。
本发明的水性化妆品中的(C)多元醇和/或乙醇的配混量至少为(D)疏水性粉末的配混量的1/2以上，优选为1倍以上、1.5倍以上、2倍以上、2.5倍以上或3倍以上。如果考虑到(D)疏水性粉末的配混量范围，则相对于水性化妆品总量，为0.25质量％以上、0.5质量％以上、1质量％以上、1.25质量％以上、1.5质量％以上。若配混量过少，则有时无法获得稳定的化妆品。另外，若配混量过多，则有时在涂布时成为厚重的触感，因此，典型而言，相对于本发明的水性化妆品总量，将配混量的上限设为40质量％以下、30质量％以下或20质量％以下。作为具体的配混量范围，可以设为0.25～40质量％、1～30质量％、1.5～20质量％等。
<(D)疏水性粉末>
本发明的水性化妆品中配混的(D)疏水性粉末为选自(D1)用除金属皂以外的物质进行了疏水化处理的金属氧化物、(D2)疏水性的有机粉末、(D3)有机硅粉末中的1种或2种以上。
(D1)用除金属皂以外的物质进行了疏水化处理的金属氧化物(以下也简称为“疏水化处理金属氧化物”)为以金属氧化物粉末颗粒作为基材、对其表面实施了疏水化处理的粉末颗粒。
作为疏水化处理金属氧化物的基材，例如可举出：氧化钛、氧化鉄、氧化镁、氧化锌、氧化钙、氧化铝等。另外，也可以使用包含多个基材的复合粉末颗粒。
作为对这些基材粉末颗粒所实施的疏水化处理，可以应用可用作化妆品等中配混的粉末的表面处理的各种表面处理，例如：氟化合物处理、有机硅处理、硅烷偶联剂处理、钛偶联剂处理、油剂处理、N-酰化赖氨酸处理、聚丙烯酸处理、氨基酸处理、无机化合物处理、等离子体处理、机械化学处理、硅烷化合物或硅氮烷化合物等。但是，若用硬脂酸铝等金属皂进行疏水化处理，则有时无法获得期望的分散性。因此，本发明中的(D1)疏水化处理金属氧化物是指“用除金属皂以外的物质进行了疏水化处理的金属氧化物”。
作为本发明中的金属氧化物粉末的疏水化处理，特别优选的是有机硅处理或脂肪酸糊精处理。
作为有机硅处理，可举出：通过甲基氢聚硅氧烷、二甲基聚硅氧烷(聚二甲基硅氧烷)、甲基苯基聚硅氧烷等硅油；甲基三乙氧基硅烷、乙基三乙氧基硅烷、己基三乙氧基硅烷、辛基三乙氧基硅烷等烷基硅烷；三氟甲基乙基三甲氧基硅烷、十七氟癸基三甲氧基硅烷等氟烷基硅烷等的处理。
作为脂肪酸糊精处理，可举出：通过棕榈酸糊精等的处理。这些疏水化处理可以依照常规方法进行，疏水化处理剂可以为1种，也可以组合2种以上。
本发明中使用的(D1)疏水化处理金属氧化物也可以为市售品，例如可举出：FINEX-50W-LP2、STR-100C-LP(堺化学工业株式会社制造)、MPY-1133M、MZX-304OTS、MTY-110M3S(Tayca Corporation制造)等。
作为(D2)疏水性的有机粉末，也可以使用聚酰胺树脂粉末(尼龙粉末)、聚乙烯粉末、聚酯粉末、聚氨酯粉末、聚甲基丙烯酸甲酯粉末、聚苯乙烯粉末、苯乙烯与丙烯酸的共聚物树脂粉末、苯并胍胺树脂粉末、聚四氟乙烯粉末、进行了疏水化处理的纤维素粉、淀粉粉末等。其中，优选为选自由聚甲基丙烯酸甲酯粉末、尼龙粉末、聚氨酯粉末、聚乙烯粉末、聚苯乙烯粉末组成的组中的有机粉末。
作为(D2)疏水性的有机粉末的市售品，例如可举出：Matsumoto Microsphere M-330(松本油脂制药株式会社制造)、plastic powder D-400、plastic powder D-800(TOSHIKI PIGMENT CO.,LTD.制造)等。
作为(D3)有机硅粉末，具体而言，可举出：聚二甲基硅氧烷/乙烯基聚二甲基硅氧烷交联聚合物、聚二甲基硅氧烷/苯基聚二甲基硅氧烷交联聚合物、聚有机倍半硅氧烷、乙烯基聚二甲基硅氧烷/聚甲基硅氧烷倍半硅氧烷交联聚合物等有机硅树脂粉末。作为市售品，可列举出：Tospearl 2000B(Momentive Performance Materials Inc.制造)、TrefilE-506(Dow Corning Toray Co.,Ltd.制造)、KSP-101(信越化学工业株式会社制造)等。
对于本发明中的(D)疏水性粉末的形状、尺寸没有特别限制，例如可以采用球状、片状、花瓣状、薄片状、棒状、纺锤状、针状、不规则状等形状。对于(D)疏水性粉末的尺寸，可优选使用平均粒径以球状颗粒换算为2nm～5μm左右的疏水性粉末。若使用粉末形状为球状的疏水性粉末，则使用性优异，同时也可以赋予利用光的反射得到的褶皱遮盖效果、肌肤粗糙改善效果。(D1)疏水化处理金属氧化物也作为紫外线散射剂发挥作用，其中，优选细颗粒状(平均粒径＝约1μm以下)的氧化钛或氧化锌。
本发明的水性化妆品中的(D)疏水性粉末的配混量相对于化妆品总量，优选为0.5质量％以上、1质量％以上、2质量％以上、3质量％以上、4质量％以上或5质量％以上，且设为35质量％以下、30质量％以下、25质量％以下或20质量％以下。作为具体的配混量范围，为0.5～35质量％、优选为3～25质量％、更优选为5～20质量％。若配混量低于0.5质量％，则不会充分发挥由含有粉末所产生的效果，若超过30质量％进行配混，则有发涩感、起皱、发粘等使用性上产生问题的倾向。
本发明的水性化妆品除了前述成分以外，还可以在不妨碍本发明的效果的范围内含有可配混于水性化妆品的其他任意成分。对于其他任意成分，没有限制，例如可举出：上述以外的增稠剂、保湿剂、油剂、紫外线吸收剂、pH调节剂、中和剂、抗氧化剂、防腐剂、螯合剂、软化剂、植物提取液、香料、色素、各种药剂等。
本发明的水性化妆品在构成水性化妆品的基质仅为水性成分的形态的情况下，可以通过将(A)聚醚改性有机硅、(C)多元醇和/或乙醇、(D)疏水性粉末搅拌混合而制备粉末部，将其添加于含有(B)亲水性增稠剂的水相部(基质)而制备。
另外，在水性化妆品为水包油型乳化组合物的形态的情况下，可以分别制备含有(B)亲水性增稠剂的水相部、和油相部，将油相部添加至水相部进行乳化而制备水包油型乳化组合物(基质)，另一方面，将(A)聚醚改性有机硅、(C)多元醇和/或乙醇、(D)疏水性粉末搅拌混合而制备粉末部，将其混合于前述乳化物(基质)，由此进行制备。
本发明的水性化妆品可以使(D)疏水性粉末稳定地分散于水相，因此，可以保持水性化妆品原有的水润性不变而赋予(D)疏水性粉末所具有的优异的光滑性、耐水性、化妆持久性。另外，在配混具有褶皱遮盖效果、肌肤粗糙改善效果的粉末作为(D)疏水性粉末时，也可以期待肤质改善效果。另外，在使用疏水性细颗粒氧化钛、疏水性细颗粒氧化锌等具有紫外线防御能力的粉末(紫外线散射剂)作为(D)疏水性粉末时，能够获得使用性高的防晒化妆品。在水包油型乳化物的形态的水性化妆品中，若配混紫外线散射剂作为疏水性粉末并在油相中配混紫外线吸收剂，则紫外线吸收剂与紫外线散射剂共同地发挥作用，紫外线防御效果协同地提高。但是，为了维持水润的使用感，包含紫外线吸收剂的油相成分配混量优选设为20质量％以下、15质量％以下、10质量％以下、8质量％以下、5质量％以下或3质量％以下。对于本发明的水性化妆品，紫外线散射剂均匀地分散在水相中，因此，即使油溶性的紫外线散射剂的配混量是少量的，也可获得充分的紫外线防御能力。
实施例
以下列举具体例，进一步对本发明进行详细说明，但本发明并不限定于以下的实施例。另外，以下的实施例等中的配混量只要没有特别说明则表示质量％。
(实施例1～4和比较例1～3)
将具有下述表1所示的组成的水相部、粉末部分别搅拌混合直至均匀，将粉末部添加至水相部，由此制备水性化妆品。通过外观观察及使用光学显微镜(400倍)对所得化妆品进行观察，依照以下基准评价粉末的分散稳定性。
<评价基准>
A：疏水性粉末均匀地分散在油分中
B：疏水性粉末在外观上均匀地分散，但使用光学显微镜检查时，观察到少许聚集的部分
C：在外观上观察到疏水性粉末的一部分聚集
D：疏水性粉末的大部分发生聚集
[表1]
*1)商品名：BY11-030(Dow Corning Toray Co.，Ltd.制造)
*2)商品名：BY25-339(Dow Corning Toray Co.，Ltd.制造)
*3)商品名：SH3773M(Dow Corning Toray Co.，Ltd.制造)
*4)商品名：KF6011(信越化学工业株式会社制造)
*5)商品名：KF6017(信越化学工业株式会社制造)
如实施例1～4所示，在使用HLB(Si)为5～14的范围的聚醚改性有机硅时，疏水性粉末可以分散至水相，但在HLB(Si)低于5的比较例1中，无法使疏水性粉末分散。另外，若将聚醚改性有机硅置换为烃系的表面活性剂，则即使该表面活性剂的HLB高(HLB＝14)，也无法良好地分散(比较例2)。进而，在不使用聚醚改性有机硅也不使用表面活性剂时，无法使疏水性粉末分散(比较例3)。
(实施例5～13和比较例4)
利用与上述实施例1相同的方法，制备具有下述表2和表3所示的组成的水性化妆品，依照前述基准评价各化妆品的分散稳定性。将这些结果一并示于表2和表3。
[表2]
*4)商品名：KF6011(信越化学工业株式会社制造)
[表3]
*4)商品名：KF6011(信越化学工业株式会社制造)
如实施例5～7所示，对于包含用除金属皂以外的物质进行了表面疏水化处理的金属氧化物的疏水性粉末，在本发明的体系中良好地分散在水相中。特别是，在使用进行了有机硅处理的金属氧化物粉末时，显示出优异的分散性。但是，如比较例4所示，进行了金属皂(硬脂酸铝)处理的粉末无法良好地分散。另外，如实施例8～13所示，在使用疏水性的有机粉末和有机硅粉末时，均可以均匀地分散。
(实施例14和比较例5)
将下述表4所示的水相部、油相部分别加热至70℃，使其完全溶解。将油相部添加至水相部，利用乳化机进行乳化，冷却。此时，比较例5中，在乳化前将粉末部混合于水相，但实施例14中，将经搅拌混合的粉末部混合在冷却后的水包油型乳化组合物中。
使用所得组合物作为妆前乳，由专业评价评委10人依照以下基准评价此时的水润性、光滑性、可涂抹的容易性、化妆持久性。
<评价基准>
A：回答优异的评委为8～10人。
B：回答优异的评委为5～7人。
C：回答优异的评委为4人以下。
[表4]
*3)商品名：SII3773M(Dow Corning Toray Co.，Ltd.制造)
如实施例14所示，显示出：使进行了有机硅处理的金属氧化物、有机硅粉末分散于水相的本发明的妆前乳，保持了水包油型乳化组合物的水润性并且疏水性粉末特有的光滑性、可涂抹的容易性、化妆持久性优异。另一方面，如比较例5所示，确认到：在配混亲水性粉末代替疏水性粉末时，光滑性、可涂抹的容易性、化妆持久性不充分。
以下，列举本发明的水性化妆品的配方例。当然，本发明并不受这些配方例的任何限定，而是通过权利要求书特定的。需要说明的是，配混量相对于水性化妆品全部以质量％表示。
配方例1：美白化妆水
配方例2：化妆水
配方例3：乳液
Claims (5)
1.一种水性化妆品，其特征在于，含有：
(A)0.1～5质量％的HLB(Si)为5～14的聚醚改性有机硅、
(B)亲水性增稠剂的1种或2种以上、
(C)多元醇和/或乙醇、
(D)疏水性粉末，其为选自用除金属皂以外的物质进行了疏水化处理的金属氧化物、疏水性的有机粉末、有机硅粉末中的1种或2种以上，
并且(D)疏水性粉末分散于水相。
2.根据权利要求1所述的化妆品，其特征在于，(B)亲水性增稠剂含有选自由多糖类及其衍生物、以及聚丙烯酰胺化合物组成的组中的至少1种。
3.根据权利要求1所述的化妆品，其特征在于，(B)亲水性增稠剂含有聚丙烯酰胺化合物，还含有多糖类或其衍生物。
4.根据权利要求1～3中任一项所述的化妆品，其特征在于，疏水化的金属氧化物是通过有机硅处理或脂肪酸糊精处理而被疏水化的。
5.根据权利要求1～4中任一项所述的化妆品，其特征在于，疏水性的有机粉末选自由聚甲基丙烯酸甲酯粉末、尼龙粉末、聚氨酯粉末、聚乙烯粉末、聚苯乙烯粉末组成的组。
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| JP6536561B2 (ja) * | 2014-02-20 | 2019-07-03 | 堺化学工業株式会社 | 疎水性有機表面処理された微粒子無機粉体水系分散体及びそれを配合した化粧料 |
| JP6535329B2 (ja) * | 2014-06-30 | 2019-06-26 | 株式会社 資生堂 | 水中油型乳化組成物 |
-
2015
- 2015-06-30 KR KR1020167017116A patent/KR20170018798A/ko unknown
- 2015-06-30 US US15/321,811 patent/US10300008B2/en active Active
- 2015-06-30 JP JP2016531380A patent/JP6543247B2/ja active Active
- 2015-06-30 WO PCT/JP2015/068776 patent/WO2016002752A1/ja active Application Filing
- 2015-06-30 TW TW104121268A patent/TW201607561A/zh unknown
- 2015-06-30 CN CN202211102301.6A patent/CN115444785A/zh active Pending
- 2015-06-30 CN CN201580021925.7A patent/CN106232084A/zh active Pending
- 2015-06-30 EP EP15815189.4A patent/EP3162355A4/en not_active Withdrawn
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103827234A (zh) * | 2011-08-03 | 2014-05-28 | 堺化学工业株式会社 | 分散体 |
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|---|---|
| KR20170018798A (ko) | 2017-02-20 |
| EP3162355A1 (en) | 2017-05-03 |
| US20170128352A1 (en) | 2017-05-11 |
| CN106232084A (zh) | 2016-12-14 |
| JPWO2016002752A1 (ja) | 2017-04-27 |
| JP6543247B2 (ja) | 2019-07-10 |
| WO2016002752A1 (ja) | 2016-01-07 |
| EP3162355A4 (en) | 2018-02-21 |
| US10300008B2 (en) | 2019-05-28 |
| TW201607561A (zh) | 2016-03-01 |
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