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CN107003546A - 包含聚酯树脂的功能性片材和使用该功能性片材的透镜 - Google Patents

包含聚酯树脂的功能性片材和使用该功能性片材的透镜 Download PDF

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Publication number
CN107003546A
CN107003546A CN201580065161.1A CN201580065161A CN107003546A CN 107003546 A CN107003546 A CN 107003546A CN 201580065161 A CN201580065161 A CN 201580065161A CN 107003546 A CN107003546 A CN 107003546A
Authority
CN
China
Prior art keywords
layer
resin
lens
functional sheet
aromatic polycarbonate
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201580065161.1A
Other languages
English (en)
Inventor
中村恭介
后藤拓也
鹤谷浩隆
光畑和久
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Gas Chemical Co Inc
MGC Filsheet Co Ltd
Original Assignee
Mitsubishi Gas Chemical Co Inc
MGC Filsheet Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mitsubishi Gas Chemical Co Inc, MGC Filsheet Co Ltd filed Critical Mitsubishi Gas Chemical Co Inc
Publication of CN107003546A publication Critical patent/CN107003546A/zh
Pending legal-status Critical Current

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Abstract

根据本发明，能够通过功能性片材提供着色透镜，该功能性片材是由保护层夹持偏光膜层、调光层或作为它们的组合的功能层而得到的功能性片材，上述保护层中至少单面具有包括树脂(C)的层，上述树脂(C)中，1,4‑环己烷二甲醇与1,4‑环己烷二甲酸缩聚形成的聚酯树脂(A)和芳香族聚碳酸酯树脂(B)，相对于(A)和(B)的合计100质量份，(A)配合有10～100质量份、(B)配合有0～90质量份。

Description

包含聚酯树脂的功能性片材和使用该功能性片材的透镜
技术领域
本发明涉及具有偏光性或调光性的功能性片材，还涉及将该功能性片材弯曲加工成曲面形状得到的弯曲眼镜(eyewear)、或者在该弯曲加工后在一个面将透镜用透明树脂注射成型而得到的注射眼镜，特别涉及经染色处理的着色眼镜。
背景技术
芳香族聚碳酸酯片材由于透明性、耐冲击性、耐热性优异且轻量，因此以液晶显示器为代表，被用于建筑物的窗户或汽车的天窗、水上运动、冬季运动、垂钓等中使用的太阳镜或护目镜。
然而，芳香族聚碳酸酯片材的光弹性常数大，因此在太阳镜或护目镜这样的实施以弯曲成球面或非球面的面形状的加工时，容易产生由延迟造成的着色干涉条纹，存在该着色干涉条纹损害外观、引起眼睛疲劳等的问题。
关于在实施弯曲加工时产生的延迟，已知通过预先对保护层所使用的芳香族聚碳酸酯片材实施拉伸处理使其事先产生大的延迟，从而看不见着色干涉条纹的芳香族聚碳酸酯偏光片材(以下称为拉伸聚碳酸酯偏光片材(专利文献1)，在偏光透镜中被用于外观和抗眼睛疲劳优异的制品。
另一方面，为了形成与上述的对拉伸聚碳酸酯偏光片材实施弯曲加工而形成的偏光透镜相比进一步提高耐冲击性、或者具有焦点折射力的矫正用透镜，已知将弯曲加工为球面或非球面的面形状的拉伸聚碳酸酯偏光片材插入模具内、注射芳香族聚碳酸酯而成型得到的偏光透镜(专利文献2、3)。
另外，作为能够与通过嵌件模塑注射成型注射的芳香族聚碳酸酯树脂牢固地熔融一体化而不会损害芳香族聚碳酸酯树脂的优异的耐热性和耐冲击性的透明树脂材料，提出了使用由包含1,4－环己烷二甲醇与二羧酸成分的聚酯树脂、和芳香族聚碳酸酯构成的聚合物合金的偏光透镜(专利文献4)。
在这样形成的透镜的表面，适当地形成硬涂层、防反射膜等，接着通过镜片研磨、开孔、螺丝固定等固定于框架，形成太阳镜或护目镜。
然而，在要求时尚性的以眼镜透镜(eyeglass lenses)用途等为代表的透明性树脂的成型体的用途中，当然需求具有光学特性(例如透明性、高折射率等)、耐冲击性等特性，而且还强烈需求能够由简便的染色方法容易地染色。例如，在形成层次染色为透镜的上部透射率低、下部透射率高的着色浓度的情况下，还能够赋予看远方或天空时防眩性高、眼前的视野明亮、作业性好等的功能性。
然而，以双酚A型聚碳酸酯为代表的芳香族聚碳酸酯类，在用一般的染色方法(例如利用分散染料的染色等)时，存在染色性极为欠缺的问题，为了进行染色，需要经过利用能够染色的硬涂层材料，在透镜上设置涂层，对该涂层进行染色等繁琐的工序。在使用这样的可染性硬涂层的方法中，硬涂层的耐擦伤性不充分，还存在成本增加的问题。
为了解决这样的问题，提出了通过使用将由双酚A构成的芳香族聚碳酸酯和由脂环式二羟基化合物得到的聚碳酸酯树脂掺混得到的聚合物合金来提高染色性的方法(专利文献5)。
另一方面，认识到芳香族聚碳酸酯的表面容易划伤，作为其对策需要设置硬涂层，但在对经染色的透镜实施硬涂时，存在染料在利用酸-碱或醇类的清洗工序以及硬涂液涂布工序中脱色的问题。专利文献5中没有关于脱色和硬涂层的记载。在专利文献4中，公开了使用含有1,4－环己烷二甲醇的PC合金的偏光眼镜透镜，虽然记载了根据用途可以对其表面适时实施硬涂、防雾涂布、防反射涂布等各种公知的表面处理、以及用于着色的染色处理，但没有关于带有硬涂层的染色透镜的具体记载。
现有技术文献
专利文献
专利文献1：日本特开平03－39903号公报
专利文献2：日本特开平08－52817号公报
专利文献3：日本特开平08－313701号公报
专利文献4：日本特开2010－39357号公报
专利文献5：日本特开2011－132422号公报
发明内容
发明所要解决的课题
本发明的课题在于提供染色性好、还能够防止脱色的功能性片材。另外，本发明的课题还在于通过使用该功能性片材，提供通过赋予硬涂层而耐擦伤性高的着色眼镜。
用于解决课题的方法
本发明的发明人发现通过利用使用了特定材料的功能性片材，不仅能够使透镜的染色性良好，还能够防止脱色，因此通过将透镜染色，并在其上涂布一般的硬涂层，能够提供耐擦伤性也高的着色透镜，从而完成了本发明。
即，本发明如下所示。
＜1＞一种功能性片材，其是用保护层I和保护层II夹持偏光膜层、调光层或作为它们的组合的功能层而得到的功能性片材，上述保护层中至少单面具有包括树脂(C)的层，上述树脂(C)中，1,4-环己烷二甲醇与1,4-环己烷二甲酸缩聚而形成的聚酯树脂(A)和芳香族聚碳酸酯树脂(B)，相对于(A)和(B)的合计100质量份，(A)配合有10～100质量份，(B)配合有0～90质量份。
＜2＞如上述＜1＞所述的功能性片材，具有包括树脂(C)的层的保护层是包括树脂(C)的层和包括芳香族聚碳酸酯树脂的层通过共挤出成型法叠层一体化而形成的层，并且包括树脂(C)的层是表面层。
＜3＞一种将上述＜1＞或＜2＞所述的功能性片材弯曲加工成球面或非球面而形成的透镜。
＜4＞一种将上述＜1＞或＜2＞所述的功能性片材以包括树脂(C)的层为凸面表面的方式弯曲加工后，嵌入模具内，在凹面侧将透明树脂一体注射成型而得到的透镜。
＜5＞一种对上述＜3＞或＜4＞所述的透镜进行染色处理而得到的着色透镜。
＜6＞如上述＜3＞至＜5＞中任一项所述的透镜，上述透镜具有硬涂层。
＜7＞一种使用了上述＜3＞至＜6＞中任一项所述的透镜的眼镜。
发明的效果
根据本发明，不仅能够使透镜的染色性良好，还能够防止脱色，因此通过将透镜染色、并在其上涂布一般的硬涂层，能够提供耐擦伤性也高的着色透镜。
具体实施方式
以下，对本发明进行详细说明。
作为本发明中使用的聚酯树脂(A)，能够使用例如使1,4－环己烷二甲醇与1,4－环己烷二甲酸通过酯化或酯交换反应缩聚而得到的聚酯树脂，作为能够以市售品获得的聚酯树脂，可以例示三菱化学制的聚酯系热塑性弹性体“Primalloy CP300”。更优选由1,4－环己烷二甲醇和1,4－环己烷二甲酸得到的聚(1,4－环己烷二甲醇－1,4－环己烷二甲酸酯)树脂，作为能够以市售品获得的聚酯树脂，可以例示三菱化学制的聚酯系热塑性弹性体“Primalloy CP200”和“Primalloy CP201”。
本发明中使用的芳香族聚碳酸酯树脂(B)是指通过使芳香族二羟基化合物或其和少量的多羟基化合物与碳酰氯或碳酸的二酯反应而制得的可以有支链的热塑性聚碳酸酯聚合物。本发明中使用的芳香族二羟基化合物是指下述通式(a)或通式(b)所示的化合物。
在上述通式(a)中，
其中，在通式(a)和通式(b)中，R1和R2为氢原子或碳原子数1～10的烷基或卤素，R1和R2既可以相同也可以不同。另外，m和n表示取代基数，为0～4的整数。
关于通式(a)中的X，R3和R4为氢原子或碳原子数1～10的烷基或者苯基，R3和R4可以结合形成环。
作为上述通式(a)或通式(b)所示的芳香族二羟基化合物，可以使用例如双(4－羟基苯基)甲烷、1,1－双(4－羟基苯基)乙烷、2,2－双(4－羟基苯基)丙烷、2,2－双(4－羟基苯基)丁烷、2,2－双(4－羟基苯基)辛烷、双(4－羟基苯基)苯基甲烷、2,2－双(4－羟基－3－甲基苯基)丙烷、1,1－双(4－羟基－3－叔丁基苯基)丙烷、2,2－双(4－羟基－3－溴苯基)丙烷、1,1－双(4－羟基苯基)环戊烷、1,1－双(4－羟基苯基)环己烷、4,4′－二羟基二苯基醚、4,4′－二羟基－3,3′－二甲基苯基醚、4,4′－二羟基苯基硫醚、4,4′－二羟基－3,3′－二甲基二苯基硫醚、4,4′－二羟基二苯基亚砜、4,4′－二羟基－3,3′－二甲基二苯基亚砜、4,4′－二羟基二苯基砜、4,4′－二羟基二苯基砜、4,4′－二羟基－3,3′－二甲基二苯基砜等。这些之中，从强度、耐热性、耐久性或弯曲加工性的方面考虑，特别优选2,2′－双(4－羟基苯基)丙烷(双酚A：BPA)。另外，通式(a)所示的芳香族二羟基化合物也能够并用2种以上。这样的芳香族聚碳酸酯树脂(B)的玻璃化转变温度为135～155℃左右。
本发明中的芳香族聚碳酸酯树脂(B)中也可以加入其它成分，作为其他成分，没有特别限制，可以根据目的适当选择，可以列举例如抗氧化剂、脱模剂、紫外线吸收剂、流动性改质剂、结晶成核剂、强化剂、染料、抗静电剂、抗菌剂等。它们可以单独使用1种，也可以并用2种以上。
此外，关于芳香族聚碳酸酯树脂(B)的分子量，从片材本身的成型的方面考虑，优选粘均分子量为12,000～40,000的树脂，从片材强度、耐热性、耐久性或弯曲加工性的方面考虑，特别优选20,000～35,000的分子量。
本发明中的包括树脂(C)的层中，聚酯树脂(A)和芳香族聚碳酸酯树脂(B)，相对于(A)和(B)的合计100质量份，(A)配合有10～100质量份，(B)配合有0～90质量份。从包括树脂(C)的层的染色性、染色后的耐脱色性的方面考虑，优选(A)配合20～50质量份，(B)配合50～80质量份，更优选(A)配合20～40质量份，(B)配合60～80质量份。从功能性片材的耐热性的观点出发，优选芳香族聚碳酸酯树脂(B)的配合量为50质量份以上。
关于本发明中的包括树脂(C)的层的配合方法，可以将分别单独制造的聚酯树脂(A)和芳香族聚碳酸酯树脂(B)各自的固体混合，利用混炼机混炼来制造，还可以在熔融状态的聚酯树脂(A)中添加固体的芳香族聚碳酸酯树脂(B)，或者在熔融状态的芳香族聚碳酸酯树脂(B)中添加固体的聚酯树脂(A)，利用混炼机混炼来制造。或者还可以将熔融状态的聚酯树脂(A)和熔融状态的芳香族聚碳酸酯树脂(B)混合，利用混炼机混炼来制造。
混炼既可以以连续式进行也可以以间歇式进行。作为混炼机，可以使用挤出机、Labo Plastomill、捏和机等，在连续地进行混炼时适合使用挤出机，而在以间歇式进行混炼时适合使用Labo Plastomill或捏和机。此外，在使用利用熔融缩聚法制造的聚碳酸酯树脂的情况下，从避免混炼时的酯交换反应的角度看，希望在催化剂失活后进行混炼。
另外，作为本发明中的包括树脂(C)的层的另一种配合方法，还有使聚酯树脂(A)和芳香族聚碳酸酯树脂(B)溶解在溶剂中，注入到模具中后，使溶剂蒸发的方法。作为溶剂，使用例如二氯甲烷、氯仿、甲酚等。在使用该方法的情况下，能够同时溶解添加添加剂，因此便利。
本发明中的包括树脂(C)的层中，在不损害其物性的范围内可以根据目的加入各种公知的添加剂。例如优选实施添加热稳定剂、水解稳定剂、抗氧化剂、颜料、染料、强化剂、填充剂、紫外线吸收剂、润滑剂、脱模剂、结晶成核剂、增塑剂、流动性改良剂、抗静电剂、抗菌剂等。
这些添加剂可以在进行掺和混炼前，预先在聚酯树脂(A)和芳香族聚碳酸酯树脂(B)的任意一者或两者中添加，也可以在掺和混炼时同时添加混炼，还可以在掺和后混炼。
本发明中的包括树脂(C)的层能够在粒料化后，通过注射成型、压缩成型、挤出成型等制造。成型方法能够使用现有公知的方法。
在本发明中，作为至少单面的保护层，具有包括配合有聚酯树脂(A)和芳香族聚碳酸酯树脂(B)的树脂(C)的层。上述保护层通常厚度为50μm～1.5mm，优选为100μm～800μm。另外，本发明中的保护层既可以以单层使用包括树脂(C)的层，更优选将上述包括树脂(C)的层与包括芳香族聚碳酸酯树脂的层叠层一体化而得到的多层的片材或膜。作为叠层的方法，没有特别限定，共挤出成型法因能够密合性好地叠层而优选。通过使用将包括芳香族聚碳酸酯树脂的层与包括树脂(C)的层叠层一体化而得到的多层片材或膜，能够得到耐热性、耐冲击性得到提高的保护层。此时，优选以包括树脂(C)的层位于功能性片材的表面侧、包括芳香族聚碳酸酯树脂的层位于功能层侧的方式，相对于功能层配置保护层。
芳香族聚碳酸酯的光弹性常数大，基于应力或取向造成的双折射，容易产生着色干涉条纹。因此，优选预先使本发明中的具有包括树脂(C)的层的片材或膜具有大的延迟值，从而看不见着色干涉条纹，至少延迟值为2,000nm以上且20,000nm以下，优选为3,000nm以上，特别在考虑加工工序中的降低的情况下，优选为4,000nm以上。虽然延迟值越高越看不到着色干涉条纹，但延迟值表示取向度和残留应力的大小，存在越高则表面形状的精度越低的缺点。该着色干涉条纹透过偏光膜才能够被人眼所见。因此，制成高延迟的片材的效果通过在偏光膜的光入射侧、即人眼的相反侧使用而实现。
本发明中的偏光膜层(或偏光性的功能层)优选为使用由二色性的有机染料将聚乙烯醇系树脂的膜染色并拉伸而制得的层。作为该聚乙烯醇类，可以例示聚乙烯醇(PVA)、PVA的残留有微量乙酸酯结构的物质、以及作为PVA衍生物或类似物的聚乙烯醇缩甲醛、聚乙烯醇缩乙醛、乙烯－乙酸乙烯酯共聚物皂化物等，特别优选PVA。将该膜在一个方向上拉伸，并使其浸渗或吸附2色性的有机染料，适当地进行固定、干燥，制成偏光的膜。
作为PVA膜，重均分子量为50,000～350,000，优选为150,000～300,000。原料膜厚度通常为100～300μm左右，PVA偏光膜通常为10～50μm。
PVA膜的拉伸倍率为2～8倍，可以根据目的适当选择，从拉伸后的强度的方面考虑，优选3～5倍。
本发明中的调光(光致变色)层，例如可以使用(1)预先制造的调光性的膜，还可以使用(2)配合有调光性有机化合物的调光性的粘接剂层。在上述(1)的情况下，是调光性有机化合物在树脂膜中均匀分散的膜，能够通过浇铸法、熔融挤出法、以及热扩散法等公知的方法制造。
在通过冲裁等将本发明的功能性片材加工为单个的透镜用的形状后，以包括树脂(C)的层成为凸面表面的方式实施弯曲加工。在作为注射透镜使用的情况下，可以在弯曲加工后嵌入模具内，在凹面侧将透明树脂一体注射成型来制作透镜。作为该透明树脂，可以列举芳香族聚碳酸酯、非晶性聚烯烃(脂环式聚烯烃)、聚丙烯酸酯、聚砜、乙酰纤维素、聚苯乙烯、聚酯、透明聚酰胺以及芳香族聚碳酸酯与脂环式聚酯的组合物、或它们的混合物等。在要求耐冲击性、耐热性的太阳镜或护目镜中，优选芳香族聚碳酸酯。其中，更优选双酚A型聚碳酸酯。
可以对本发明的功能性片材和使用该功能性片材的透镜实施染色处理。染色方法能够使用公知的各种染色方法。即，作为代表性的染色方法，可以列举例如在水性介质中或有机溶剂中、或者它们的混合介质中，使用染料(例如分散染料等)、颜料等进行染色的方法等。其中，更优选在水性介质中利用分散染料进行染色的方法。作为染料、颜料，没有特别限制，适合使用纤维、树脂等的染色所使用的公知的各种染料、颜料。
接着，能够实施硬涂层处理。已知树脂表面比玻璃容易划伤，在太阳镜或护目镜中，为了提高耐擦伤性，强烈要求在其表面叠层硬涂层。关于硬涂层的材质或加工条件，由于本发明的功能性片材具有优异的染色性，所以不受硬涂层能否染色所带来的限制，能够从耐擦伤性、外观、对于功能性片材或者接着涂敷的镜面涂层或防反射涂层等无机层的密合性优异的材料中适当选择。作为涂布方法，可以利用浸涂法、喷涂法、辊涂法、旋涂法等公知的方法将硬涂层液涂布在基材上，使其干燥，并根据需要进行加热，由此形成覆膜层。硬涂层液能够通过使硬涂层组合物溶解或分散在溶剂中，并根据需要利用稀释溶剂进行稀释来制作。稀释溶剂能够列举醇类、溶纤剂类、酮类、酯类、醚类等。
另外，通常在涂布前进行前处理。前处理可以列举表面的利用酸－碱的脱脂处理、超声波清洗等。通过这些前处理，对硬涂层的密合性造成影响的污垢被除去。进而，利用醇等进行前处理液的除去，涂布硬涂层液，形成硬涂层。
接着，通过镜片研磨、开孔、螺丝固定等固定于框架，制成眼镜(太阳镜或护目镜等)。
实施例
以下，说明本发明的实施例，但本发明不受以下的实施例任何限定。
(实施例1)
＜保护层片材的制作＞
使用具有螺杆直径30mm的单螺杆挤出机、与挤出机连结的进料块和与进料块连结的T模的挤出装置(Plaengi制、PSV-30)，将聚酯树脂(A)(三菱化学制、商品名：PrimalloyCP201)成型为保护层片材。在螺杆直径30mm的单螺杆挤出机中连续导入聚酯树脂(A)，以料筒温度250℃的条件挤出。用与其前端连结的温度250℃的T模挤出成片状，用镜面加工辊边转印镜面边冷却，得到聚酯树脂(A)的片材。此时辊的设定温度为100℃。
＜偏光膜的制作＞
将聚乙烯醇(Kuraray Co.,Ltd.制、商品名：VF－PS#7500)在35℃的水中膨润270秒，拉伸到2倍。
接着，在含有Kayarus Supra Blue BWL、Sumilite Red 4B、Sumilite SupraOrange 2GL和10g/L的无水硫酸钠的35℃的水溶液中，边染色边拉伸到3倍。
将该染色膜在含有乙酸镍2.3g/L和硼酸4.4g/L的水溶液中于35℃浸渍120秒，同时拉伸到4倍。将该膜在保持紧拉状态的状态下在室温进行3分钟干燥后，以110℃进行3分钟加热处理，得到透射率35％、偏光度99％的偏光膜。
＜功能性片材的制作＞
相对于聚氨酯预聚物50重量份，使用固化剂5重量份、作为溶剂的乙酸乙酯60重量份，制备粘接剂组合物。使用棒涂机#24将该粘接剂组合物涂布在上述偏光膜上，以70℃干燥10分钟后，用层压机将上述保护层片材与上述偏光膜上的粘接剂组合物贴合。按照与上述相同的方法在所得到的叠层片材的偏光膜侧涂布粘接剂组合物，同样贴合另一片保护层片材，得到功能性片材。固化后的粘接剂涂膜的厚度为9～11μm。另外，保护层片材的厚度分别为0.3mm。
＜弯曲加工＞
将所得到的功能性片材使用带真空抽吸且具有硅橡胶片材包覆的凹球面弯曲模具(曲率半径66.81mm、基弧7.932)，在表面温度设定为145℃的阴模的硅橡胶片材上载置切片，开始真空抽吸，然后用硅橡胶片材包覆后的阳模加压，由此进行球面弯曲加工。其中，这里所说的基弧是指透镜前表面的曲率，是530除以毫米单位的曲率半径得到的值。
＜注射成型透镜化＞
将弯曲加工后的功能性片材以凸面侧与注射成型模具接触的方式嵌入，在凹面侧将芳香族聚碳酸酯树脂(三菱工程塑料株式会社制、商品名：Iupilon CLS 3400)注射成型并透镜化。注射成型条件分别设为树脂温度300℃、模具温度80℃、保压60MPa。
＜透镜染色＞
将作为分散染料的BPI Brown#31100(Brain Power Inc.制)88ml添加到纯水1L中，在93℃保温，得到茶色的染色液。将上述偏光透镜在93℃浸渍得到着色透镜。用分光光度计(岛津制作所制，商品名“UV－2700”)测定上述着色透镜的分光透射率，评价染色前后的透射率差(染色后的染色量)。其中，透射率是JIS Z－8701规定的、利用C光源的2度视场中的视感透射率。
＜醇脱色＞
将上述制得的着色透镜在甲醇中浸渍30分钟，评价染色前和脱色后的透射率差(脱色后的染色量)。并评价浸渍前后的脱色率。这里所说的脱色率是利用数学式“(染色后的染色量－脱色后的染色量)/(染色后的染色量)×100”计算得到的值。透射率测定使用着色性评价中所使用的试验机，以同样的方法测定。
＜硬涂层＞
利用浸涂机对上述着色透镜实施硬涂处理，得到带有硬涂层的着色透镜。
将染色前后的透射率和染色量、以及脱色后的透射率、染色量和脱色率的值表示在以下的表1中。
(实施例2)
在实施例1中，相对于聚酯树脂(A)和芳香族聚碳酸酯树脂(B)(三菱工程塑料株式会社制、商品名：Iupilon E-2000(下同))的合计100质量份，聚酯树脂(A)配合40质量份，芳香族聚碳酸酯树脂(B)配合60质量份，制作保护层片材，除此以外，与实施例1同样地制作着色透镜，进行同样的评价。评价结果表示在表1中。
(实施例3)
在实施例1中，相对于聚酯树脂(A)和芳香族聚碳酸酯树脂(B)的合计100质量份，聚酯树脂(A)配合30质量份，芳香族聚碳酸酯树脂(B)配合70质量份，制作保护层片材，除此以外，与实施例1同样地制作着色透镜，进行同样的评价。评价结果表示在表1中。
(实施例4)
在实施例1中，相对于聚酯树脂(A)和芳香族聚碳酸酯树脂(B)的合计100质量份，聚酯树脂(A)配合20质量份，芳香族聚碳酸酯树脂(B)配合80质量份，制作保护层片材，除此以外，与实施例1同样地制作着色透镜，进行同样的评价。评价结果表示在表1中。
(实施例5)
在实施例1中，相对于聚酯树脂(A)和芳香族聚碳酸酯树脂(B)的合计100质量份，聚酯树脂(A)配合10质量份，芳香族聚碳酸酯树脂(B)配合90质量份，制作保护层片材，除此以外，与实施例1同样地制作着色透镜，进行同样的评价。评价结果表示在表1中。
(实施例6)
在实施例1中，作为保护层片材，使用利用共挤出法制造的由聚酯树脂(A)和芳香族聚碳酸酯树脂构成的叠层体，使用以芳香族聚碳酸酯树脂层与涂布在偏光膜上的粘接剂组合物贴合的方式叠层的功能性片材，除此以外，与实施例1同样地制作着色透镜，进行同样的评价。评价结果表示在表1中。
(实施例7)
在实施例5中，将保护层片材的厚度设为0.7mm，不进行注射成型透镜化，除此以外，与实施例5同样地制作着色透镜，进行同样的评价。评价结果表示在表1中。
(比较例1)
在实施例1中，使用芳香族聚碳酸酯树脂(B)代替聚酯树脂(A)制作保护层片材，除此以外，与实施例1同样地制作着色透镜，进行同样的评价。评价结果表示在表1中。
[表1]
如表1所示，在实施例1中，染色后的透射率相比于染色前的透射率下降了30％以上，是令人满意的结果。此外，脱色率也接近3％，是令人满意的结果。此外，通过硬涂层处理，耐擦伤性也良好。在本发明中，优选染色后的透射率比染色前的透射率下降5％以上，更优选下降15％以上，特别优选下降25％以上。另外，在本发明中，脱色率优选为30％以下，更优选为10％以下，特别优选为5％以下。另一方面，在比较例1中，染色后的透射率相比于染色前的透射率仅下降了3.7％，脱色率也高达76％。

Claims (7)

1.一种功能性片材，其特征在于：
在保护层I与保护层II之间，具有偏光膜层、调光层或作为它们的组合的功能层，
所述保护层中至少单面的保护层具有包括树脂(C)的层，所述树脂(C)中，1,4-环己烷二甲醇与1,4-环己烷二甲酸缩聚形成的聚酯树脂(A)和芳香族聚碳酸酯树脂(B)，相对于(A)与(B)的合计100质量份，(A)配合有10～100质量份，(B)配合有0～90质量份。
2.如权利要求1所述的功能性片材，其特征在于：
具有包括树脂(C)的层的保护层是包括树脂(C)的层与包括芳香族聚碳酸酯树脂的层叠层一体化而形成的层，并且包括树脂(C)的层是表面层。
3.一种权利要求1或2所述的功能性片材被弯曲加工成球面或非球面而形成的透镜。
4.一种权利要求1或2所述的功能性片材以包括树脂(C)的层为凸面表面的方式被弯曲加工、在凹面侧将透明树脂一体注射成型而形成的透镜。
5.一种权利要求3或4所述的透镜被染色处理而形成的着色透镜。
6.如权利要求3～5中任一项所述的透镜，其特征在于：
所述透镜具有硬涂层。
7.一种使用了权利要求3～6中任一项所述的透镜的眼镜。
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