CN109199878A - 一种美白防晒w/o/w多重乳液及其制备方法 - Google Patents

一种美白防晒w/o/w多重乳液及其制备方法 Download PDF

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CN109199878A
CN109199878A CN201811121559.4A CN201811121559A CN109199878A CN 109199878 A CN109199878 A CN 109199878A CN 201811121559 A CN201811121559 A CN 201811121559A CN 109199878 A CN109199878 A CN 109199878A
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aqueous phase
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胡建强
杨佩
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South China University of Technology SCUT
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Abstract

本发明属于化妆品技术领域,公开了一种美白防晒W/O/W多重乳液及其制备方法。所述多重乳液由内水相、油相和外水相三相组成,其中内水相组分含有美白抗氧化剂0.1~15%、水溶性保湿剂0.1~20%;油相组分含有抗氧化剂0.1~5%、防晒剂5~18%、亲油性乳化剂1~7%、脂质溶剂5~25%;外水相组分含有亲水性乳化剂1~5%、水溶性保湿剂2~30%、防腐剂0.1~0.8%和水溶性香精0.01~0.2%;其余为去离子水。本发明将美白抗氧化原料包封在乳液内水相中,增加了其对光、氧、热的稳定性,且能缓慢长效释放内水相中的活性物质,降低对皮肤的刺激性,提高生物利用率。

Description

一种美白防晒W/O/W多重乳液及其制备方法
技术领域
本发明属于化妆品技术领域,具体涉及一种美白防晒W/O/W多重乳液及其制备方法。
背景技术
到达地球表面的阳光中的紫外线辐射通常分为两个波段,UVA波段和UVB波段,波长较长的UVA会深入肌肤的深层,伤害肌肤的真皮层,将皮肤晒黑,是造成皮肤老化的重要原因之一,UVB波段是导致皮肤晒伤的根源,严重情况下可产生红斑以及水泡,强烈的紫外线照射还可能引起皮肤癌症。
拥有健康白皙的皮肤已经成为现代人们的追求,兼具防晒与美白功效的化妆品在市场上具有巨大的应用潜力和价值。美白化妆品中常用的美白活性成分有熊果苷、烟酰胺、维生素C、维生素A及其衍生物、传明酸等,但是有些美白成分对光、氧、热等极其敏感,在储存和使用过程中容易被分解,而且有些美白成分在制剂中释放速度过快,在局部浓度过高时对皮肤会有刺激性;防晒化妆品中常用的化学防晒剂主要通过吸收特定波长的紫外线而起到防晒功效,添加量到一定浓度时会影响到产品的使用肤感,质地不够清爽。
中国专利申请CN105106039A公开了一种原花色素美白防晒霜的制备方法,该发明采用大孔树脂分离技术对原花色素纯化提取得到低聚原花色素,将其添加到配方中制成润肤霜,避免其有效成分被破坏,提高利用率,但天然植物来源的活性原料具有提取效率低的缺点,并且大孔吸附树脂价格昂贵,操作较为复杂,成本较高。中国专利申请CN101953772A公开了一种美白防晒化妆品及其制备方法和应用,该发明分别用磷脂包裹化学防晒剂,天然壳质衍生物包裹视黄醇添加到组合物配方中,提高活性物稳定性,实现活性物缓慢释放,减少对皮肤的刺激性,但磷脂对活性物包埋率低,视黄醇添加量受到限制。中国专利CN104042484A公开了一种清爽型防晒乳液,该发明通过原料复配,添加多重润肤成分,制成质地清爽的防晒乳液,但由于防晒剂添加量较少,防晒效果不够好。
发明内容
针对以上现有技术存在的缺点和不足之处,本发明的首要目的在于提供一种美白防晒W/O/W多重乳液。其多重乳液结构能减少在储存和使用过程中美白抗氧化原料的损失,缓慢而长效地释放活性物质,对皮肤刺激性小;该乳液具有美白和防晒双重功效,并且使用肤感更加良好,不会有油腻发粘感。
本发明的另一目的在于提供上述美白防晒W/O/W多重乳液的制备方法。
本发明目的通过以下技术方案实现:
一种美白防晒W/O/W多重乳液,所述多重乳液由内水相、油相和外水相三相组成,其中内水相组分按乳液总重量百分数计含有美白抗氧化剂0.1~15%、水溶性保湿剂0.1~20%;油相组分按乳液总重量百分数计含有抗氧化剂0.1~5%、防晒剂5~18%、亲油性乳化剂1~7%、脂质溶剂5~25%;外水相组分按乳液总重量百分数计含有亲水性乳化剂1~5%、水溶性保湿剂2~30%、防腐剂0.1~0.8%和水溶性香精0.01~0.2%;其余为去离子水,以上各总分的质量总和是100%。
进一步地,所述内水相中的美白抗氧化剂包括维生素C、烟酰胺、熊果苷和果酸中的至少一种。
进一步地,所述内水相和外水相中的水溶性保湿剂包括甘油、丙二醇、海藻糖、尿囊素、D-泛醇、透明质酸钠和角鲨烷中的至少一种。
进一步地,所述油相中的抗氧化剂包括维生素E和葡萄籽提取物中的至少一种。
进一步地,所述油相中的防晒剂包括对苯二亚甲基二樟脑磺酸、奥克立林和4-甲氧基肉桂酸辛酯中的至少一种。
进一步地,所述油相中的亲油性乳化剂包括Span80和Span20中的至少一种。
进一步地,所述油相中的脂质溶剂包括液体石蜡油、葡萄籽油、甜杏仁油、葵花籽油和环状二甲基硅氧烷中的至少一种。
进一步地,所述外水相中的亲水性乳化剂包括Tween80和Tween20中的至少一种。
进一步地,所述外水相中的防腐剂包括苯氧乙醇和甲基异噻唑啉酮中的至少一种。
进一步地,所述外水相中的水溶性香精包括玫瑰香精、桂花香精和洋甘菊香精中的至少一种。
进一步地,所述内水相总质量分数为10~30%,油相总质量分数为15~30%,外水相总质量分数为30~75%。
进一步地,所述美白防晒W/O/W多重乳液结构中,油滴直径在1~150μm之间,内水相液滴直径在0.1~50μm之间。
上述美白防晒W/O/W多重乳液的制备方法,包括如下制备步骤:
(1)将油相中的各个组分加入油锅中在40~50℃恒温水浴中加热至溶解均匀,同时将内水相的各个组分加入水锅中在40~50℃恒温水浴中加热至溶解完全;
(2)将内水相加入油相中,在40~50℃恒温水浴中均质10~15min后冷却至室温,得到W/O初乳;
(3)将外水相中各个组分加入水锅中搅拌至溶解完全,在室温下边搅拌边将制备的W/O初乳加入到外水相中,搅拌15~20min,出料得到所述美白防晒W/O/W多重乳液。
本发明是W/O/W(水包油包水)型多重乳化体系。该W/O/W多重乳液使用多种营养保湿物质如D-泛醇、海藻糖、尿囊素、透明质酸钠、角鲨烷等与美白抗氧化剂复配,增强乳液的美白抗氧化、保湿滋润、消炎修复的皮肤护理作用;同时还在油相中添加维生素E和葡萄籽提取物,维生素E与维生素C具有抗氧化、抗自由基的协同作用,维生素E本身为一种抗氧化剂,与自由基反应后,可生成生育酚羟自由基化合物,此化合物又能被维生素C还原成维生素E,继续发挥抗氧化及其他作用;采用对苯二亚甲基二樟脑磺酸、奥克立林、4-甲氧基肉桂酸辛酯几种防晒剂复配,能吸收不同波段紫外线,达到良好的防晒功能;油相中还添加了葡萄籽油和葵花籽油等作为基质,含有多种营养成分,能提供抗氧化性,使得乳液体系不易引起由于光照、热辐射和与空气接触而产生的氧化酸败现象。该W/O/W多重乳液不同于常见的W/O型和O/W型简单乳液,它将美白抗氧化成分包封在乳液内水相中,乳液的双重液滴界面膜结构不仅克服了美白活性成分在储存和使用过程中对光、氧、热等极其敏感容易发生氧化和变色的缺点,还能在使用过中缓慢长效释放内水相中的活性物质,降低对皮肤的刺激性,提高生物利用率;此外W/O/W多重乳液本身具有良好的使用肤感,不会因为化学防晒剂的加入而感到油腻和发粘,不仅能有效抵抗紫外线,还具有晒后修复、美白滋润、防皱抗老化等功效。
本发明的美白防晒W/O/W多重乳液及其制备方法具有如下优点及有益效果:
(1)本发明的美白防晒W/O/W多重乳液将美白抗氧化原料包封在乳液内水相中,不仅克服了美白活性成分在储存和使用过程中对光、氧、热等极其敏感容易发生氧化和变色的缺点,还能在使用过中缓慢长效释放内水相中的活性物质,降低对皮肤的刺激性,提高生物利用率。
(2)W/O/W多重乳液本身具有良好的使用肤感,不会因为化学防晒剂的加入而感到油腻和发粘,不仅能有效抵抗紫外线,还具有晒后修复、美白滋润、防皱抗老化等功效。
附图说明
图1为实施例1制备的W/O/W多重乳液光学显微镜图;
图2为实施例2所得W/O/W多重乳液及W/O乳液、维生素C水溶液中维生素C的对光、氧的稳定性测试结果图;
图3为实施例2所得W/O/W多重乳液及W/O乳液、水溶液中的维生素C的缓释效果研究结果图;
图4为实施例2所得W/O/W多重乳液及W/O乳液、水溶液中的烟酰胺的缓释效果研究结果图。
具体实施方式
下面结合实施例及附图对本发明作进一步详细的描述,但本发明的实施方式不限于此。
实施例1
本实施例的一种美白防晒W/O/W多重乳液的配方如下:
内水相:
油相:
外水相:
制备方法如下:
(1)将油相中的各个组分加入油锅中在40~50℃恒温水浴中加热至溶解均匀,同时将内水相的各个组分加入水锅中在40~50℃恒温水浴中加热至溶解完全;
(2)将内水相加入油相中,在40~50℃恒温水浴中均质10~15min后冷却至室温,得到W/O初乳;
(3)将外水相中各个组分加入水锅中搅拌至溶解完全,在室温下边搅拌边将制备的W/O初乳加入到外水相中,搅拌15~20min,出料得到所述美白防晒W/O/W多重乳液。
实施例2
本实施例的一种美白防晒W/O/W多重乳液的配方如下:
内水相:
油相:
外水相:
制备方法如下:
(1)将油相中的各个组分加入油锅中在40~50℃恒温水浴中加热至溶解均匀,同时将内水相的各个组分加入水锅中在40~50℃恒温水浴中加热至溶解完全;
(2)将内水相加入油相中,在40~50℃恒温水浴中均质10~15min后冷却至室温,得到W/O初乳;
(3)将外水相中各个组分加入水锅中搅拌至溶解完全,在室温下边搅拌边将制备的W/O初乳加入到外水相中,搅拌15~20min,出料得到所述美白防晒W/O/W多重乳液。
实施例3
本实施例的一种美白防晒W/O/W多重乳液的配方如下:
内水相:
油相:
外水相:
制备方法如下:
(1)将油相中的各个组分加入油锅中在40~50℃恒温水浴中加热至溶解均匀,同时将内水相的各个组分加入水锅中在40~50℃恒温水浴中加热至溶解完全;
(2)将内水相加入油相中,在40~50℃恒温水浴中均质10~15min后冷却至室温,得到W/O初乳;
(3)将外水相中各个组分加入水锅中搅拌至溶解完全,在室温下边搅拌边将制备的W/O初乳加入到外水相中,搅拌15~20min,出料得到所述美白防晒W/O/W多重乳液。
实施例4
本实施例的一种美白防晒W/O/W多重乳液的配方如下:
内水相:
果酸 3.0份;
烟酰胺 5.0份;
去离子水 10.0份;
油相:
外水相:
制备方法如下:
(1)将油相中的各个组分加入油锅中在40~50℃恒温水浴中加热至溶解均匀,同时将内水相的各个组分加入水锅中在40~50℃恒温水浴中加热至溶解完全;
(2)将内水相加入油相中,在40~50℃恒温水浴中均质10~15min后冷却至室温,得到W/O初乳;
(3)将外水相中各个组分加入水锅中搅拌至溶解完全,在室温下边搅拌边将制备的W/O初乳加入到外水相中,搅拌15~20min,出料得到所述美白防晒W/O/W多重乳液。
以上实施例所得美白防晒W/O/W多重乳液外观上呈乳白色,无异味,均匀一致,具有良好的肤感,使用无油腻发粘感。
(1)结构分析:
以实施例1为例测试所得多重乳液结构,所得美白防晒W/O/W多重乳液的光学显微镜图如图1所示。由图1可见,本发明所得美白防晒W/O/W多重乳液由内水相、油相和外水相三相组成。内水相液滴直径在0.1~50μm之间,外水相包裹的油滴直径在1~150μm之间。
(2)乳液中活性物质维生素C的对光、氧的稳定性测试:
测试方法为:分别配制维生素C含量与实施例2相同的W/O乳液和维生素C水溶液,在紫外灯下连续照射21天,每隔2天取相同量W/O/W多重乳液、W/O乳液、维生素C水溶液用无水乙醇稀释定容,在245nm处测定紫外吸光度。初始吸光度为A0,光处理后吸光度为A1,维生素C保存百分比K=A1/A0*100%。测试结果如图2所示。由图2结果可以看出,本发明所得W/O/W多重乳液相比W/O乳液和维生素C水溶液,活性物质维生素C的对光、氧的稳定性得到了显著的提高。
(3)乳液中烟酰胺和维生素C的缓释效果研究:
测试方法为:分别配制维生素C含量和烟酰胺含量与实施例2相同的W/O乳液和水溶液,在稀硫酸中连续透析10小时,每隔2小时取相同量的透析液,用无水乙醇稀释定容,分别在261nm处和245nm处测定烟酰胺和维生素C含量,得到美白活性物释放率。维生素C和烟酰胺的缓释效果研究结果分别如图3和图4所示。
本发明将烟酰胺与维生素C包封于内水相中,相比于普通W/O乳液能有效长时间缓释活性物质,并且提高活性物质释放率,参考图3和图4。(图3为实施例2的维生素C的缓释效果研究结果,图4为实施例2的烟酰胺的缓释效果研究结果)
上述实施例为本发明较佳的实施方式,但本发明的实施方式并不受上述实施例的限制,其它的任何未背离本发明的精神实质与原理下所作的改变、修饰、替代、组合、简化,均应为等效的置换方式,都包含在本发明的保护范围之内。

Claims (9)

1.一种美白防晒W/O/W多重乳液,其特征在于:所述多重乳液由内水相、油相和外水相三相组成,其中内水相组分按乳液总重量百分数计含有美白抗氧化剂0.1~15%、水溶性保湿剂0.1~20%;油相组分按乳液总重量百分数计含有抗氧化剂0.1~5%、防晒剂5~18%、亲油性乳化剂1~7%、脂质溶剂5~25%;外水相组分按乳液总重量百分数计含有亲水性乳化剂1~5%、水溶性保湿剂2~30%、防腐剂0.1~0.8%和水溶性香精0.01~0.2%;其余为去离子水,以上各总分的质量总和是100%。
2.根据权利要求1所述的一种美白防晒W/O/W多重乳液,其特征在于:所述内水相中的美白抗氧化剂包括维生素C、烟酰胺、熊果苷和果酸中的至少一种。
3.根据权利要求1所述的一种美白防晒W/O/W多重乳液,其特征在于:所述内水相和外水相中的水溶性保湿剂包括甘油、丙二醇、海藻糖、尿囊素、D-泛醇、透明质酸钠和角鲨烷中的至少一种。
4.根据权利要求1所述的一种美白防晒W/O/W多重乳液,其特征在于:所述油相中的抗氧化剂包括维生素E和葡萄籽提取物中的至少一种;所述油相中的防晒剂包括对苯二亚甲基二樟脑磺酸、奥克立林和4-甲氧基肉桂酸辛酯中的至少一种。
5.根据权利要求1所述的一种美白防晒W/O/W多重乳液,其特征在于:所述油相中的亲油性乳化剂包括Span80和Span20中的至少一种;所述油相中的脂质溶剂包括液体石蜡油、葡萄籽油、甜杏仁油、葵花籽油和环状二甲基硅氧烷中的至少一种。
6.根据权利要求1所述的一种美白防晒W/O/W多重乳液,其特征在于:所述外水相中的亲水性乳化剂包括Tween80和Tween20中的至少一种;所述外水相中的防腐剂包括苯氧乙醇和甲基异噻唑啉酮中的至少一种;所述外水相中的水溶性香精包括玫瑰香精、桂花香精和洋甘菊香精中的至少一种。
7.根据权利要求1所述的一种美白防晒W/O/W多重乳液,其特征在于:所述内水相总质量分数为10~30%,油相总质量分数为15~30%,外水相总质量分数为30~75%。
8.根据权利要求1所述的一种美白防晒W/O/W多重乳液,其特征在于:所述美白防晒W/O/W多重乳液结构中,油滴直径在1~150μm之间,内水相液滴直径在0.1~50μm之间。
9.权利要求1~8任一项所述的美白防晒W/O/W多重乳液的制备方法,其特征在于包括如下制备步骤:
(1)将油相中的各个组分加入油锅中在40~50℃恒温水浴中加热至溶解均匀,同时将内水相的各个组分加入水锅中在40~50℃恒温水浴中加热至溶解完全;
(2)将内水相加入油相中,在40~50℃恒温水浴中均质10~15min后冷却至室温,得到W/O初乳;
(3)将外水相中各个组分加入水锅中搅拌至溶解完全,在室温下边搅拌边将制备的W/O初乳加入到外水相中,搅拌15~20min,出料得到所述美白防晒W/O/W多重乳液。
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