CN113730268A - 一种水凝胶及其应用 - Google Patents

一种水凝胶及其应用 Download PDF

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CN113730268A
CN113730268A CN202110923679.1A CN202110923679A CN113730268A CN 113730268 A CN113730268 A CN 113730268A CN 202110923679 A CN202110923679 A CN 202110923679A CN 113730268 A CN113730268 A CN 113730268A
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李素梅
林苑君
穆晓敏
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Jiangmen New Era External Use Drug Co ltd
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Abstract

本发明涉及一种水凝胶及其应用,属于日化产品技术领域。本发明的水凝胶,包括以下重量份的组分:半中和聚丙烯酸钠5~20份,丙三醇20~30份,甘羟铝0.5~1.5份,去离子水50~65份,所述半中和聚丙烯酸钠由分子量为600万的半中和聚丙烯酸钠与分子量为5万的半中和聚丙烯酸钠按照重量比1:3~1:5混合而成。本发明的水凝胶选用不同分子量半中和聚丙烯酸钠,可有效提高凝胶体的粘性,使水凝胶在使用过程中贴合皮肤,不易失去粘性而掉落;选用具有六角形网孔的锦纶/涤纶网布作为支持层,使水凝胶贴透气性更好,提高了水凝胶中有效成分的运输,从而提高了水凝胶功效成分的透皮吸收率。

Description

一种水凝胶及其应用
技术领域
本发明涉及一种水凝胶及其应用,属于日化产品技术领域。
背景技术
水凝胶是以水为分散介质的凝胶,具有网状交联结构的水溶性高分子中引入一部分疏水基团和亲水基团,亲水基团与水分子结合,将水分子连接在网状内部,而疏水基团遇水膨胀的交联聚合物。是一种高分子网络体系,性质柔软,能保持一定的形状,能吸收大量的水。水凝胶贴剂具有载药量大、保水、保湿、透气性好、无过敏、无刺激的优点,是新型的水溶性高分子贴剂。
水凝胶贴剂由支持层、水凝胶层和隔离层组成,在目前市场现有的水凝胶贴剂产品中支持层均为无纺布。无纺布由于其本身材料的透气性较差,将其作为水凝胶贴的支持层,含有功效成分的水凝胶基质与外界被无纺布隔离,对于需要通过水分导入皮肤的成分的吸收有很大的影响,而且无纺布作为支持层,会使水凝胶贴更加厚重,影响水凝胶贴的使用感。
发明内容
本发明的目的在于克服现有技术的不足,提供一种水凝胶及其应用,解决水凝胶贴有效成分吸收差,水凝胶贴厚重的问题。
为实现上述目的,本发明采取的技术方案为:
一种水凝胶,包括以下重量份的组分:半中和聚丙烯酸钠5~20份,丙三醇20~30份,甘羟铝0.5~1.5份,去离子水50~65份,所述半中和聚丙烯酸钠由分子量为600万的半中和聚丙烯酸钠与分子量为5万的半中和聚丙烯酸钠按照重量比1:3~1:5混合而成。
不同分子量半中和聚丙烯酸钠可有效提高凝胶体的粘性,使水凝胶在使用过程中贴合皮肤,不易失去粘性而掉落。
作为本发明所述水凝胶的优选实施方式,所述水凝胶还包括以下重量份的组分:环戊基硅氧烷-二甲基硅氧烷交联聚合体0.5~2份,胶原蛋白0.5~2份。
环戊基硅氧烷-二甲基硅氧烷交联聚合体添加于水凝胶基质中,使水凝胶具有独特的“天鹅绒”般丝滑触感与粉质肤感,且能被快速吸收,使皮肤呈现自然平滑的亚光视觉效果,并减少表皮细纹,效果持久;胶原蛋白的添加使水凝胶具有增加皮肤弹性的功效。
作为本发明所述水凝胶的优选实施方式,所述水凝胶还包括以下重量份的组分:清凉剂0.1~2,酒精0.1~1份。水凝胶贴中添加适量的清凉剂,能提升水凝胶贴使用的舒适感。
作为本发明所述水凝胶的优选实施方式,所述清凉剂为冰片或薄荷油。水凝胶中添加冰片或薄荷油,在滋润皮肤的同时提升水凝胶贴使用的舒适感。
本发明还提供一种水凝胶贴,包括上述水凝胶形成的凝胶层。
作为本发明所述水凝胶贴的优选实施方式,还包括复合层和保护层,所述复合层包括支持层和背衬层,所述保护层、凝胶层、支持层和背衬层由上而下依次相连。
背衬层和保护层对水凝胶贴起保护作用,是水凝胶贴不易污染,水分不易蒸发。支持层能够使水凝胶贴凝固成型。
作为本发明所述水凝胶贴的优选实施方式,所述支持层为具有六角形网孔的锦纶/涤纶网布。大多数水凝胶贴选用无纺布作为支持层,选用具有六角形网孔的锦纶/涤纶网布作为支持层,使水凝胶贴透气性更好,提高了水凝胶基质中有效成分的运输,从而提高了水凝胶功效成分的透皮吸收率,并且六角形网孔的锦纶/涤纶网布通透性好,是水凝胶贴具有轻薄服帖的使用感。
作为本发明所述水凝胶贴的优选实施方式,所述具有六角形网孔的锦纶/涤纶网布的目数为30~40目。
作为本发明所述水凝胶贴的优选实施方式,所述背衬层为PE膜;所述保护层为珠光膜或PET膜。
本发明还提供所述的水凝胶贴在制备抗皱祛纹护肤品中的应用。
与现有技术相比,本发明的有益效果为:本发明提供了一种水凝胶,该水凝胶选用不同分子量半中和聚丙烯酸钠,可有效提高凝胶体的粘性,使水凝胶在使用过程中贴合皮肤,不易失去粘性而掉落;选用具有六角形网孔的锦纶/涤纶网布作为支持层,使水凝胶透气性更好,提高了水凝胶中有效成分的运输,从而提高了水凝胶功效成分的透皮吸收率,并且六角形网孔的锦纶/涤纶网布通透性好,是水凝胶具有轻薄服帖的使用感。
具体实施方式
为更好地说明本发明的目的、技术方案和优点,下面将结合具体实施例对本发明作进一步说明。
实施例1
本发明实施例的一种水凝胶,包括以下重量份的组分:半中和聚丙烯酸钠10份,薄荷油0.5,丙三醇25份,甘羟铝1份,环戊基硅氧烷-二甲基硅氧烷交联聚合体1份,胶原蛋白1份,酒精0.5份,去离子水62份;其中半中和聚丙烯酸钠由分子量为600万的半中和聚丙烯酸钠与分子量为5万的半中和聚丙烯酸钠按照重量比1:4混合而成。
本发明实施例的一种水凝胶贴,包括上述水凝胶形成的水凝胶层,该水凝胶贴的支持层为目数为36的六角形网孔的锦纶/涤纶网布;背衬层为PE膜;保护层为珠光膜。
上述水凝胶贴的制备方法:
(1)将薄荷油与乙醇混合溶解,得混合物A;
(2)将半中和聚丙烯酸钠、甘羟铝、环戊基硅氧烷-二甲基硅氧烷交联聚合体和丙三醇混合均匀,得混合物B;
(3)将胶原蛋白与去离子水混合均匀,得胶原蛋白水溶液;
(4)将所述混合物A、混合物B与胶原蛋白水溶液混合均匀,得水凝胶基质;
(5)将步骤(4)所得的水凝胶基质通过涂布的方式涂覆于复合层上,再盖上保护层,固化后得所述水凝胶贴。
实施例2
本发明实施例的一种水凝胶,包括以下重量份的组分:半中和聚丙烯酸钠5份,薄荷油2,丙三醇20份,甘羟铝0.5份,环戊基硅氧烷-二甲基硅氧烷交联聚合体0.5份,胶原蛋白0.5份,酒精0.1份,去离子水50份;其中半中和聚丙烯酸钠由分子量为600万的半中和聚丙烯酸钠与分子量为5万的半中和聚丙烯酸钠按照重量比1:3混合而成。
本发明实施例的一种水凝胶贴,包括上述水凝胶形成的水凝胶层,该水凝胶贴的支持层为目数为30的六角形网孔的锦纶/涤纶网布;背衬层为PE膜;保护层为珠光膜。
本实施例所述水凝胶贴的制备方法同实施例1。
实施例3
本发明实施例的一种水凝胶,包括以下重量份的组分:半中和聚丙烯酸钠20份,薄荷油2,丙三醇30份,甘羟铝1.5份,环戊基硅氧烷-二甲基硅氧烷交联聚合体2份,胶原蛋白2份,酒精1份,去离子水65份;其中半中和聚丙烯酸钠由分子量为600万的半中和聚丙烯酸钠与分子量为5万的半中和聚丙烯酸钠按照重量比1:5混合而成。
本发明实施例的一种水凝胶贴,包括上述水凝胶形成的水凝胶层,该水凝胶贴的支持层为目数为40的六角形网孔的锦纶/涤纶网布;背衬层为PE膜;保护层为珠光膜。
本实施例所述水凝胶贴的制备方法同实施例1。
实施例4
本发明实施例的一种水凝胶,包括以下重量份的组分:半中和聚丙烯酸钠25份,薄荷油0.5,丙三醇25份,甘羟铝1份,环戊基硅氧烷-二甲基硅氧烷交联聚合体3份,胶原蛋白1份,酒精0.5份,去离子水62份,其中半中和聚丙烯酸钠由分子量为600万的半中和聚丙烯酸钠与分子量为5万的半中和聚丙烯酸钠按照重量比1:4混合而成。
本发明实施例的一种水凝胶贴,包括上述水凝胶形成的水凝胶层,该水凝胶贴的支持层为目数为36的六角形网孔的锦纶/涤纶网布;背衬层为PE膜;保护层为珠光膜。
本实施例所述水凝胶贴的制备方法同实施例1。
对比例1
本对比例所述水凝胶贴与实施例1的区别仅在于支持层材料不同,本对比例所述水凝胶贴的支持层为无纺布。
对比例2
本对比例所述水凝胶贴与实施例1的区别仅在于半中和聚丙烯酸钠中分子量为600万的半中和聚丙烯酸钠与分子量为5万的半中和聚丙烯酸钠的重量比不同,本对比例中半中和聚丙烯酸钠中分子量为600万的半中和聚丙烯酸钠与分子量为5万的半中和聚丙烯酸钠的重量比为1:2。
对比例3
本对比例所述水凝胶贴与实施例1的区别仅在于半中和聚丙烯酸钠中分子量为600万的半中和聚丙烯酸钠与分子量为万的半中和聚丙烯酸钠的重量比不同,本对比例中半中和聚丙烯酸钠中分子量为600万的半中和聚丙烯酸钠与分子量为5万的半中和聚丙烯酸钠的重量比为1:6。
效果例
1、抗皱补水效果进行测试
(1)测试方法:选取70名志愿者作为试用对象,平均分成7组,分别试用实施例1~4、对比例1~3制备的水凝胶贴。受试者将水凝胶贴贴于脸部,每天试用1次,连续试用3天。分别在第0天、第3天时用Visia 7面部图像分析仪对受试者面部皮肤进行毛孔和皱纹测试,分别记作D0、D3,通过仪器的云数据库及其算法进行评分,评分越低表示毛孔和皱纹越多。需要说明的是每组D0、D3值均为该组这些数值的平均值,且通过适当的分组使每组D0值接近。
(2)测试结果见表1。
表1
Figure BDA0003208380270000061
2、使用感评价
(1)测试方法:选取70名志愿者作为试用对象,平均分成7组,分别试用实施例1~4、对比例1~3制备的透气水凝胶贴。受试者将水凝胶贴贴于脸部进行测试,测试时间为3小时,并以打分的方式(0~10分,分数越高,代表该水凝胶贴的贴肤性、透气性、轻柔度越好)对水凝胶贴进行使用体验评价,然后再求取这三个指标的平均值,记为平均评分。
(2)评价结果见表2。
表2
样品 贴肤性 透气性 轻柔度 平均得分
实施例1 8 10 8 8.7
实施例2 9 10 9 9.3
实施例3 6 10 6 7.3
实施例4 6 10 6 7.3
对比例1 8 6 8 7.3
对比例2 7 6 7 6.7
对比例3 6 6 6 6
最后应当说明的是,以上实施例仅用以说明本发明的技术方案而非对本发明保护范围的限制,尽管参照较佳实施例对本发明作了详细说明,本领域的普通技术人员应当理解,可以对本发明的技术方案进行修改或者等同替换,而不脱离本发明技术方案的实质和范围。

Claims (10)

1.一种水凝胶,其特征在于,包括以下重量份的组分:半中和聚丙烯酸钠5~20份,丙三醇20~30份,甘羟铝0.5~1.5份,去离子水50~65份;所述半中和聚丙烯酸钠由分子量为600万的半中和聚丙烯酸钠与分子量为5万的半中和聚丙烯酸钠按照重量比1:3~1:5混合而成。
2.如权利要求1所述的水凝胶,其特征在于,还包括以下重量份的组分:环戊基硅氧烷-二甲基硅氧烷交联聚合体0.5~2份,胶原蛋白0.5~2份。
3.如权利要求1所述的水凝胶,其特征在于,还包括以下重量份的组分:清凉剂0.1~2,酒精0.1~1份。
4.如权利要求3所述的水凝胶,其特征在于,所述清凉剂为冰片或薄荷油。
5.一种水凝胶贴,其特征在于,包括如权利要求1-4任一项所述的水凝胶形成的凝胶层。
6.如权利要求5所述的水凝胶贴,其特征在于,还包括复合层和保护层,所述复合层包括支持层和背衬层,所述保护层、凝胶层、支持层和背衬层由上而下依次相连。
7.如权利要求6所述的水凝胶贴,其特征在于,所述支持层为具有六角形网孔的锦纶/涤纶网布。
8.如权利要求7所述的水凝胶贴,其特征在于,所述具有六角形网孔的锦纶/涤纶网布的目数为30~40目。
9.如权利要求6所述的水凝胶贴,其特征在于,所述背衬层为PE膜;所述保护层为珠光膜或PET膜。
10.一种如权利要求5~9中任意一项所述水凝胶贴在制备抗皱祛纹护肤品中的应用。
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