CN115039021B - 一种隐形眼镜及其制造方法 - Google Patents
一种隐形眼镜及其制造方法 Download PDFInfo
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- CN115039021B CN115039021B CN202080094916.1A CN202080094916A CN115039021B CN 115039021 B CN115039021 B CN 115039021B CN 202080094916 A CN202080094916 A CN 202080094916A CN 115039021 B CN115039021 B CN 115039021B
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Abstract
本发明涉及一种隐形眼镜及其制造方法,根据本发明的隐形眼镜可以包括含有丙烯酸单体的树脂组合物及乳香萃取物,根据本发明一实施方式的隐形眼镜通过含有乳香萃取物,可以防止隐形眼镜戴在使用者眼睛上时细菌的附着,并且可以作为抗菌剂防止细菌感染,因此可具有优异的稳定性和抗菌性。
Description
技术领域
本发明涉及一种隐形眼镜及其制造方法,具体地,涉及一种具有优秀的佩戴舒适度及稳定性的隐形眼镜及其制造方法。
背景技术
隐形眼镜(Contact lens)是一种可以直接附着于眼睛角膜表面上的薄镜片,可分为硬性(hard)隐形眼镜和软性(soft)隐形眼镜。近来,生产量最多的隐形眼镜是将具有高透氧性的硅胶材质(硬性镜片)和具有良好柔韧性的水凝胶材质(软性镜片)的优点相结合的硅水凝胶镜片。
另外,隐形眼镜可根据其功能分类为视力矫正用、治疗用、美容用等镜片。
因隐形眼镜直接与眼球接触,因此需要保持其透明性和表面湿润性,并且还需要从大气中供应得到适当的氧气,并且还要顺利地完成角膜的二氧化碳排放。另外,设计隐形眼镜时,需要考虑临床学方面,比如,需要使眼泪的流动顺畅,并需要避免与眼睑和眼睛表面的过多的摩擦等。
即,隐形眼镜需要满足机械强度(tensile strength)、生物相容性(biocompatibility)、无毒性(nontoxicity)、光学透明度(optical transparent)、折射率(refractive index)、表面亲水性(surface wet ability)、适合角膜的含水率(watercontent),膨胀比(welling rate)、透氧性(oxygen permeability)等条件。
另外,隐形眼镜不同于一般的眼镜,其要与眼球直接接触,因此需要注意卫生管理和佩戴上的注意。长时间佩戴隐形眼镜会使得眼泪构的成成分附着于隐形眼镜的表面,因此会导致降低佩戴舒适度,并妨碍视力,隐形镜片变色或者受细菌感染。另外,因蛋白质的沉积和微尘等外部环境的污染,也可能会促进各种微生物的附着和增殖。
眼睛由很多神经细胞和多种形态的纤维物质构成,是比身体任何一个组织更容易暴露于细菌的身体组织当中的一个。另外,眼睛由高湿度和适当温度环境构成,因此易受灰尘和微生物的接近。由此,细菌感染会导致眼科疾病,并且引发迅速且多发性的症状。
与眼睛有关的细菌中最具代表性的有真菌、绿脓杆菌,还有葡萄球菌等。日常生活中,存在由寄生在灰尘、各种衣物等的真菌引起的真菌角膜溃疡(fungal corneal ulcer)、由受污染的隐形眼镜保管盒引起的绿脓杆菌角膜溃疡(pseudomonas corneal ulcer)、由葡萄球菌引起的急性卡他性结膜炎(acute catarrhal con-junctivitis)和慢性细菌结膜炎(chronic bacterial conjunctivitis)等。
为了解决这些问题,目前正在活跃进行利用抗菌物质的研究。韩国注册专利第10-0878053号公开了用于控制眼内细菌生成的含有作为天然抗菌剂的柚皮苷的隐形眼镜。
韩国注册专利第10-1953474号公开了一种隐形眼镜,该隐形眼镜含有聚合物基体和天然抗菌剂-甘草酸(Glycyrrhizic acid),所述聚合物基体包括通过分子印迹聚合物方式来识别天然抗菌剂的聚合物空间。
发明内容
本发明在于提供一种具有优秀的佩戴舒适感及稳定性的隐形眼镜及其制造方法。
本发明一实施方式中,提供一种包括含有丙烯酸单体的树脂组合物及乳香萃取物的隐形眼镜。
所述乳香萃取物,可包括:由下述化学式所示的乳香酸当中的一个以上。
根据本发明一实施方式,所述丙烯酸单体可为选自丙烯酸、甲基丙烯酸、丙烯酰胺、C1-C15饱和或不饱和烷基丙烯酸酯或甲基丙烯酸酯、1-3个羟基所被取代的C1-C15羟烷基丙烯酸酯或甲基丙烯酸酯及N,N-二(C1-C15饱和或不饱和烷基)丙烯酰胺当中的一个以上。
根据本发明一实施方式,所述树脂组合物可还包括选自N-乙烯基吡咯烷酮(NVP)和N-甲基吡咯烷酮(NMP)当中的一个以上的亲水性单体。
根据本发明一实施方式,所述树脂组合物可包括硅胶化合物。
根据本发明一实施例,所述树脂组合物可包括选自甲基丙烯酸2-(三甲基甲硅烷氧基)乙酯、三(3-甲基丙烯酰氧基丙基)硅烷、甲基丙烯酸3-三(三甲基甲硅烷氧基)甲硅烷基丙酯及4-甲基丙烯酰氧基丁基封端的聚二甲基硅氧烷当中的一个以上的硅胶化合物。
根据本发明另一实施方式,提供一种隐形眼镜制造方法,其包括:制备包含丙烯酸单体的树脂组合物的步骤;将乳香萃取物混合于所述树脂组合物的步骤;及将所述混合物注入成型模具并进行成型的步骤。
根据本发明又另一实施方式,提供一种隐形眼镜制造方法,其包括:制备包含丙烯酸单体的树脂组合物的步骤;将所述混合物注入成型模具并进行预成型的步骤;及将乳香萃取物涂覆于所述预成型的隐形眼镜的步骤。
根据本发明一实施方式,所述隐形眼镜制造方法中,可包括:由下述化学式所示的乳香酸当中的一个以上。
根据本发明一实施例,涂覆所述乳香萃取物的步骤可利用乳香涂覆液完成,其中,所述乳香涂覆液包括:80~90重量份的纯净水、0.1~2重量份的亲水性聚合物、1~5重量份的聚乙二醇、0.01~5重量份的乳香萃取物及1~5重量份的pH调节剂。
根据本发明又另一实施方式,提供一种通过上述方法制造的隐形眼镜。
根据本发明一实施方式的隐形眼镜,因包括乳香萃取物,可具备优秀的佩戴舒适感和稳定性。
又,根据本发明一实施方式制造的隐形眼镜,因含有乳香萃取物,因此当使用者佩戴隐形眼镜时,可防止菌附着到眼睛上。又,乳香萃取物从隐形眼镜缓慢排放,可起到抗菌剂的作用,因此可防止细菌感染。
根据本发明一实施方式的隐形眼镜,因涂覆有乳香萃取物,能够改善隐形眼镜的表面滑动性。因此能够减轻眼皮和角膜受损,并起到眼皮和角膜表面的保护膜作用,因此能够增加眼球舒适度,并形成稳定的眼泪层。
又,可降低附着于镜片上的蛋白质沉淀物,从而能够避免减低隐形眼镜的含水率和透氧率,并通过减少接触角,能够避免佩戴隐形眼镜时所造成的不适感。
最佳实施方式
以下,将详细描述本发明的示例和实施例,以便本发明所属领域的普通技术人员能够容易地实施本发明。
但是,本发明可以以多种不同形式实施,其并不限于在此所述的示例和实施例。
本说明书中提到当一个构件位于另一个构件“上”时,这不仅包括一个构件与另一个构件相交的情况,还包括另一个构件存在于两个构件之间的情况。
本说明书中提到当某个部分“包括”某个构成要素时,除非有相反的特殊说明,这意味着可以进一步包括其他构成要素,而不是排除其他构成要素。本说明书中所使用的程度术语“约”、“实质上”等在提示所述含义固有的制造和物质允许公差时使用其数值或接近于数值的值,并且用于防止侵权者昧心不公平地使用为了正确理解本发明所公开的正确或者绝对的数值本说明书中所使用的程度术语“~(的)步骤”或“~的步骤”并不意味着“为~的步骤”。
本发明涉及一种包括含有丙烯酸单体的树脂组合物及乳香萃取物的隐形眼镜及其制造方法。
本说明书中所述的“隐形眼镜”是指可佩戴于佩戴者的眼睛上或者眼睛内的结构。隐形眼镜可用于补正、改善或者变化使用者的视野,但是也可用于美容等的其他目的。隐形眼镜可包括本发明所属领域公知的物质,也可以是软性镜片、硬性镜片或者混合性镜片。
根据本发明一实施方式的隐形眼镜,因包括乳香萃取物,可具备优秀的佩戴舒适感和稳定性。
本发明一实施方式中,乳香萃取物是指属于乳香(Boswellia)属植物的植物萃取物,所属乳香萃取物可包括作为活性成分的乳香酸(boswellic acid)。
乳香属植物有齿叶乳香树(Boswellia serata)、阿曼乳香(Boswelliafrereana)、玛蒂树(Boswellia carterii)等,具体地,乳香属植物可以是齿叶乳香树(Boswellia serata),但并不限于此。
乳香含有丰富的消炎成分,如三萜、乳香酸和醋酸Incelsol醋酸等,这些成分作为抗氧化剂具有出色的炎症治疗效果。尤其是,乳香酸对5-脂氧合酶(一种从花生四烯酸产生白三烯的酶)具有活性抑制效果,因此具有非特异性抗氧化作用,因此比起例如乌索酸等的典型的弹性蛋白酶活性抑制剂具有更好的效果。
具体地,有研究表明,乳香萃取物降低了骨关节炎中炎症诱导因子的活性(韩国食品营养科学期刊43(5),20145,631-640(10pages)Journal of the Korean Society ofFood Science and Nutrition 43(5),20145,631-640(10pages))。
另外,还有研究结果表明,给炎症性肠病(IBD)患者给药乳香萃取物6周,有82%的患者被治愈(英国药学杂志(Francesca Borelli研究小组论文))。
根据本发明一实施方式,并不限制获取乳香萃取物的方法。
例如,可通过萃取工艺获得,但并不限于此。例如,可利用水、具有1-4个碳原子的无水或含水低级醇(甲醇、乙醇、丙醇、丁醇等)、低级醇和水的混合溶剂、丙酮、乙酸乙酯、氯仿、1,3-丁二醇,乙酸丁酯等的萃取溶剂从乳香中获取。具体地,萃取溶剂可使用水或乙醇。
在获取所述乳香萃取物的过程中,可以使用本领域常用的任何萃取器进行萃取,例如可以使用配备有冷却冷凝器的萃取器,其适合用于防止萃取过程中活性成分的蒸发。另外,萃取物的干燥可以通过本领域公知的多种方法进行,例如,可以使用旋转真空蒸发器(rotating Vacuum evaporator)来实施。
另外,根据根据本发明一实施方式,乳香萃取物可经由常规的纯化过程。例如,可使用具有恒定分子量截止值的超滤膜进行分离、通过各种色谱法进行分离(根据大小、电荷、疏水性或亲和性分离而制备)等,通过额外地实施的多种纯化方法所获得的活性级分,但并不限于此。
另外,根据本发明的一实施方式,可以使用通过例如真空蒸馏及冷冻干燥或喷雾干燥等的额外的工艺做制备的粉末状态的乳香萃取物。
所述乳香萃取物,可包括:由下述化学式所示的乳香酸(Bosw ellic acid)。
所述化学式1的名称为β-乳香酸(β-Boswellic acid),化学式2的名称为3-O-乙酰基-11-酮基-β-乳香酸(3-O-Acetyl-11-keto-β-boswellic acid),化学式3的名称为α-乳香酸(α-Boswellicacid),化学式4的名称为11-酮基-β-乳香酸(11-Keto-β-boswellicacid),化学式5的名称为3-乙酰基-11-酮基-β-乳香酸(3-Acetyl-11-keto-β-boswellic acid),化学式6的名称为3-O-乙酰基-β-乳香酸(3-O-Acetyl-β-boswellicacid),化学式7的名称为3-O-乙酰基9,11-dehydroβ-乳香酸(3-O-Acetyl 9,11-dehydroβ-boswellic acid),化学式8的名称为3-O-乙酰基-α-乳香酸(3-O-Acetyl-α-boswellicacid)。
构成隐形眼镜的其他成分将在下述隐形眼镜制造方法中描述。
以下,将详细描述根据本发明一实施方式的隐形眼镜制造方法。后述的隐形眼镜制造方法可以理解为是指定根据本发明一实施方式的隐形眼镜的一种方法。
根据本发明的一实施方式,乳香萃取物可以与形成隐形眼镜的树脂组合物混合及聚合,或者以涂覆于模制隐形眼镜的方式应用。以下,将依次描述各个制造方法。
根据本发明一实施方式的隐形眼镜制造方法,包括:制备包含丙烯酸单体的树脂组合物的步骤;将乳香萃取物混合于所述树脂组合物的步骤;及将所述混合物注入成型模具并进行成型的步骤。
首先,可制备包含丙烯酸单体的树脂组合物。
所述丙烯酸单体可使用:如丙烯酸、甲基丙烯酸、丙烯酰胺;C1-C15饱和或不饱和烷基丙烯酸酯或甲基丙烯酸酯、1-3个羟基所被取代的C1-C15羟烷基丙烯酸酯或甲基丙烯酸酯、N,N-二(C1-C15饱和或不饱和烷基)丙烯酰胺等及其一种以上的混合物,但并不限于此。
具体地,可使用:丙烯酸(AA)、甲基丙烯酸(MA)、丙烯酰胺、甲基丙烯酸月桂酯(LMA)、甲基丙烯酸羟乙酯(HEMA)、单甲基丙烯酸甘油酯(GMMA)、N,N-二甲基丙烯酰胺(DMA)等。
对于所述丙烯酸单体之间的含量并不予以特别限制,但,可使用90~98重量份的所述甲基丙烯酸羟乙酯(HEMA),而其他单体可以在0.1~10重量份的范围内分别予以使用。
所述甲基丙烯酸羟乙酯(Hydroxyethyl methacrylate,HEMA)是最常用于软性隐形眼镜的水凝胶。
水凝胶是一种水溶性聚合物通过物理或化学键合形成三维交联的网状结构,其可含有大量的不溶解于水相环境的水。另外,因易于进行加工可转化为多种形态,并且由于其含水量(water content)高、与细胞外基质(extracellular matrix)的物理化学相似性,具有很高的生物相容性。
根据本发明一实施方式,可以使用两种以上的功能单体来形成能够识别乳香萃取物的聚合物空间。
其为一种分子印迹聚合物方式,其主要属性是以非共价键通过聚合反应而形成的聚合物空间与乳香萃取物的相互作用。被所述聚合物空间识别的乳香萃取物可以从隐形眼镜中缓慢释放。
例如:可使用90至98重量份的甲基丙烯酸羟乙酯(Hydroxyethyl methacrylate,HEMA)及1至3重量份的甲基丙烯酸甲酯(methylmethacrylate,MMA),但并不限于此。
另外,根据本发明一实施方式,所述树脂组合物为了增加水分含量,可进一步包括,如:N-乙烯基吡咯烷酮(NVP)、N-甲基吡咯烷酮(NMP)等的亲水性单体。
以100重量份的所述树脂组合物计,可包含:0.1至10重量份的所述亲水性单体,具体地可包含:0.1至8重量份,更具体地可包含:0.1至5重量份。
当所述亲水性单体的含量低于0.1重量份时,润湿性有可能被降低,而超过10重量份时,其拉伸强度则可能会减弱。
另外,根据本发明一实施方式,所述树脂组合物可进一步包括硅胶化合物。在此情况下,可以制造硅水凝胶镜片。
本发明中,硅胶化合物是含有硅(Si)原子的烃类化合物,其中,所述硅(Si)原子可以具有羟基、碳原子数1~10的烷氧基、酰胺基、酯基、甲硅烷氧基等的取代基。
例如:甲基丙烯酸2-(三甲基甲硅烷氧基)乙酯、三(3-甲基丙烯酰氧基丙基)硅烷、甲基丙烯酸3-三(三甲基甲硅烷氧基)甲硅烷基丙酯、4-甲基丙烯酸氧丁基封端的聚二甲基硅氧烷等,但并不限于此。
以100重量份的树脂组合物计,可包含:0.1至50重量份的所述硅胶化合物。当所述硅胶化合物的含量超过50重量份时,其拉伸强度及润湿性有可能会减弱。
另外,根据本发明一实施方式,所述树脂组合物可包括交联剂或引发剂。
根据本发明一实施方式,所述交联剂可以是乙二醇二甲基丙烯酸酯(EGDMA)、二乙二醇甲基丙烯酸酯(DEGMA)、二乙烯基苯及三羟甲基丙烷三甲基丙烯酸酯(TMPTMA)等,但可并不限于此。
以100重量份的树脂组合物计,可包含:0.1至5重量份的所述交联剂。具体地,所述交联剂的含量可为0.1至3重量份,更具体地可为0.1至1重量份。当所述交联剂的含量超过1重量份时,有可能不易形成分子印迹聚合物方式所需的聚合物空间。另外,还会影响隐形眼镜的光学视野、柔韧性和含水率。
根据本发明一实施方式,所述引发剂可使用偶氮二异丁腈(AIBN)、苯偶姻甲醚(BME)、2,5-二甲基-2,5-二-(2-乙基己酰基过氧)己烷及二甲氧基苯基苯乙酮(DMPA)等,但可并不限于此。
以100重量份的树脂组合物计,可包含:0.001至5重量份的所述引发剂。具体地,所述引发剂的含量可为0.01至1重量份,更具体地可为0.01至0.5重量份。当所述引发剂的含量超过5重量份时,有可能不易形成分子印迹聚合物方式所需的聚合物空间。另外,还会影响隐形眼镜的光学视野、柔韧性和含水率。
接下来,可通过将乳香萃取物混合于所述树脂组合物来制备混合物。
有关所述乳香萃取物的具体特性及制造方法,如上所述。如上所述,根据本发明一实施方式,可将乳香萃取物作为乳香酸予以使用。
以100重量份的所述树脂组合物计,可混合0.001至1重量份的所述乳香萃取物。当所述乳香萃取物的含量低于0.001重量份时,隐形眼镜的佩戴舒适度及抗菌性有可能被降低,而超过1重量份时,隐形眼镜的拉伸强度及透氧率则可能会减弱。
接下来,可通过将所述混合物注入至成型模具进行成型,以获得隐形眼镜。
根据本发明一实施方式,可使用旋转铸造法(spin casting)或铸塑成型法(castmolding),但并不限于此。
所述旋转铸造法是将作为所述镜片的原料的树脂组合物注入到旋转的模具中,借助旋转速度使其在模具表面铺展,并通过施加紫外线或热量来进行聚合的方法。其形状可根据模具的形状、转速、树脂组合物的物理性质和注入量来确定。
所述铸塑成型法是将作为镜片原料的树脂组合物注入到具有镜片正反两面形状的模具中,并通过施加紫外线或热量使其聚合的方法。
根据本发明一实施方式,所述成型工艺可在60℃至120℃下实施20分钟至5小时。具体地,可在80至100℃下实施40分钟至1小时,或者可在100至120℃下实施20分钟至30分钟。
根据本发明另一实施方式的隐形眼镜制造方法,可包括:制备包含丙烯酸单体的树脂组合物的步骤;将所述树脂组合物注入成型模具并进行成型的步骤;及将乳香萃取物涂覆于所述成型的隐形眼镜的步骤。
首先,可制备包含丙烯酸单体的树脂组合物。
有关包含所述丙烯酸单体的树脂组合物的构成成分及含量,如上所述。
接下来,可通过将所述树脂组合物注入至成型模具并进行预成型,以获得隐形眼镜。
所述成型工艺如上所述,可使用旋转铸造法(spin casting)或者铸塑成型法(cast molding)。
接下来,可将乳香萃取物涂覆于所述预成型的隐形眼镜上。
所述涂覆乳香萃取物的步骤可为,利用乳香萃取物制备涂覆液,并适用所述乳香涂覆液来实施。
根据本发明一实施方式,所述乳香涂覆液可含有80-90重量份的纯净水、0.1-2重量份的亲水性聚合物、1-5重量份的聚乙二醇、0.01-5重量份的乳香萃取物及1-5重量份的pH调节剂。混合上述成分后,搅拌混合物以制备乳香涂覆液。所述搅拌可以以100至500rpm的速度进行10至60分钟,但并不限于此。
根据本发明一实施方式,所述乳香萃取物可使用乳香酸,所述乳香酸可包括由上述化学式1至化学式8所示的化合物当中的一个以上。
根据本发明一实施方式,所述亲水性聚合物可以是聚乙烯醇、聚乙烯吡咯烷酮、透明质酸钠、磷酸胆碱聚合物或者醋酸纤维素,但并不限于此。
根据本发明一实施方式,所述涂覆可使用本领域公知方法,但不限于此,例如可通过浸涂工艺来进行。
通过上述所述的方法制造的隐形眼镜可以经过水合及检查工艺,用盐水填充,并通过灭菌及包装过程完成产品生产。
根据本发明一实施方式的隐形眼镜,因包括乳香萃取物,可具备优秀的佩戴舒适感和稳定性。
又,根据本发明一实施方式制造的隐形眼镜,因含有乳香萃取物,因此当使用者佩戴隐形眼镜时,可防止菌附着到眼睛上。又,乳香萃取物从隐形眼镜缓慢排放,可起到抗菌剂的作用,因此可防止细菌感染。
根据本发明一实施方式的隐形眼镜,因涂覆有乳香萃取物,能够改善隐形眼镜的表面滑动性。因此能够减轻眼皮和角膜受损,并起到眼皮和角膜表面的保护膜作用,因此能够增加眼球舒适度,并形成稳定的眼泪层。
又,可降低附着于镜片上的蛋白质沉淀物,从而能够避免减低隐形眼镜的含水率和透氧率,并通过减少接触角,能够避免佩戴隐形眼镜时所造成的不适感。
具体实施方式
以下,通过根据本发明一实施方式的实施例进一步具体地说明本发明,但该实施例并不用于限制本发明范围。
实施例
实施例1
搅拌94重量份的甲基丙烯酸2-羟乙酯(2-hydroxyethylmethacrylate)、0.1重量份的甲基丙烯酸甲酯(methylmethacrylate,MMA)、5重量份的N-乙烯基吡咯烷酮(N-vinylpyrrolidone,NVP)之后,在40℃下,混合0.01重量份的乳香萃取物、0.1重量份的交联剂-乙二醇二甲基丙烯酸酯(EGDMA)、0.01重量份的引发剂-偶氮二异丁腈(AIBN)。
将混合物放入模具中,在100℃的烘箱中聚合30分钟,并进行热处理。隐形眼镜样品用蒸馏水水合并浸入盐水中备用。
实施例2
除了使用乳香酸(β-乳香酸)来代替乳香萃取物之外,其他与实施例1中相同的方式制备隐形眼镜样品。
实施例3及实施例4
除了树脂组合物为90重量份的甲基丙烯酸2-羟乙酯(2-hydroxyethylmethacrylate)、1重量份的N,N-二甲基丙烯酰胺、20重量份的4-甲基丙烯酰氧基丁基封端的聚二甲基硅氧烷之外,其他与实施例1及2相同的步骤制备隐形眼镜样品。
实施例5
以与实施例1中相同的方式制备混合物,不同之处在于不添加乳香萃取物。将所述混合物放入模具中进行预成型,然后涂上乳香涂覆液进行涂覆。将乳香涂覆液升温至90℃后,对预成型的隐形眼镜进行20分钟的浸涂(dip coating)。浸涂后,对隐形眼镜进行热处理,用蒸馏水水合,并浸入盐水中予以备用。
比较例
以与实施例1中相同的方式制备混合物,不同之处在于不添加乳香萃取物。将混合物放入模具中,在100℃的烘箱中聚合30分钟,并进行热处理。隐形眼镜样品用蒸馏水水合并浸入盐水中备用。
[评价]
1)可视光线透过率
根据ISO 18369-3标准进行测量。根据上述实施例的隐形眼镜在可见光区域均显示95%以上的透明性。
2)含水率
根据ISO 18369-4标准规格进行测量。含水量通过下式进行计算,每个样品测量3次,取平均值。根据上述实施例的所有隐形眼镜的水分含量均在35~65%的范围内。
含水率(%)=(水合镜片重量-干镜片重量)/水合镜片重量X100
3)接触角
根据ISO 18369标准进行测量,根据上述实施例的隐形眼镜均呈现45°以下的范围。
4)拉伸强度
根据ASTM D955标准进行测量,根据上述实施例的所有隐形眼镜都表现出≥0.1kgf。
5)透氧性
将其放入ISO 18369-3的标准生理盐水溶液(PBS)中,并在室温(20℃±2℃)下保存24小时,然后在与眼镜的温度相同的35℃±0.5℃下进行处理,处理时间至少为2小时,然后用于测试。根据上述实施例的隐形眼镜中,水凝胶镜片的氧转移率(Dk/t)显示为10~50,硅水凝胶镜片的氧转移率(Dk/t)显示为50~120。
6)抗菌力
测定根据上述实施例的隐形眼镜对金黄色葡萄球菌的抗菌活性。将上述比较例作为对照组,与对照组的平均菌落数相比,实施例的平均菌落数减少了80%以上,显示出抗菌活性高。
以上,参照本发明的实施例进行了描述,但是应理解为,本领域普通技术人员可以在不脱离所附权利要求中描述的本发明的精神和范围的范围内对本发明进行各种修改及变更。
工业利用性
根据本发明一实施方式的隐形眼镜,因包括乳香萃取物,可具备优秀的佩戴舒适感和稳定性。
又,根据本发明一实施方式制造的隐形眼镜,因含有乳香萃取物,因此当使用者佩戴隐形眼镜时,可防止菌附着到眼睛上。
根据本发明一实施方式的隐形眼镜,因涂覆有乳香萃取物,能够改善隐形眼镜的表面滑动性。
Claims (11)
1.一种隐形眼镜,其特征在于,
包括:含有丙烯酸单体的树脂组合物及乳香萃取物。
2.根据权利要求1所述的隐形眼镜,其特征在于,
所述乳香萃取物,包括:由下述化学式所示的乳香酸当中的一个以上。
3.根据权利要求1所述的隐形眼镜,其特征在于,
所述丙烯酸单体为:选自丙烯酸、甲基丙烯酸、丙烯酰胺、C1-C15饱和或不饱和烷基丙烯酸酯或甲基丙烯酸酯、1-3个羟基所被取代的C1-C15羟烷基丙烯酸酯或甲基丙烯酸酯及N,N-二(C1-C15饱和或不饱和烷基)丙烯酰胺当中的一个以上。
4.根据权利要求1所述的隐形眼镜,其特征在于,
所述树脂组合物,还包括:选自N-乙烯基吡咯烷酮(NVP)及N-甲基吡咯烷酮(NMP)当中的一个以上的亲水性单体。
5.根据权利要求1所述的隐形眼镜,其特征在于,
所述树脂组合物,包括:硅胶化合物。
6.根据权利要求1所述的隐形眼镜,其特征在于,
所述树脂组合物,包括:选自甲基丙烯酸2-(三甲基甲硅烷氧基)乙酯、三(3-甲基丙烯酰氧基丙基)硅烷、甲基丙烯酸3-三(三甲基甲硅烷氧基)甲硅烷基丙酯及4-甲基丙烯酰氧基丁基封端的聚二甲基硅氧烷当中的一个以上的硅胶化合物。
7.一种隐形眼镜制造方法,其特征在于,
包括:
制备包含丙烯酸单体的树脂组合物的步骤;
将乳香萃取物混合于所述树脂组合物的步骤;及
将所述乳香萃取物混合于所述树脂组合物来制备混合物,所述混合物注入成型模具并进行成型的步骤。
8.一种隐形眼镜制造方法,其特征在于,
包括:
制备包含丙烯酸单体的树脂组合物的步骤;
将所述树脂组合物注入成型模具并进行预成型的步骤;及
将乳香萃取物涂覆于所述预成型的隐形眼镜的步骤。
9.根据权利要求7或8所述的隐形眼镜制造方法,其特征在于,
所述乳香萃取物,包括:由下述化学式所示的乳香酸当中的一个以上。
10.根据权利要求8所述的隐形眼镜制造方法,其特征在于,
涂覆所述乳香萃取物的步骤利用乳香涂覆液完成,其中,所述乳香涂覆液包括:80至90重量份的纯净水、0.1至2重量份的亲水性聚合物、1至5重量份的聚乙二醇、0.01至5重量份的乳香萃取物及1至5重量份的pH调节剂。
11.一种隐形眼镜,其特征在于,
根据权利要求7至10中任一项所述的制造方法制造。
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