JP2006064932A - Article and film-forming method of the article - Google Patents

Article and film-forming method of the article Download PDF

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JP2006064932A
JP2006064932A JP2004246555A JP2004246555A JP2006064932A JP 2006064932 A JP2006064932 A JP 2006064932A JP 2004246555 A JP2004246555 A JP 2004246555A JP 2004246555 A JP2004246555 A JP 2004246555A JP 2006064932 A JP2006064932 A JP 2006064932A
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article
refractive index
registered trademark
low refractive
teflon
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JP4571459B2 (en
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Takuro Okubo
拓朗 大久保
Takashi Takahashi
崇 高橋
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Topcon Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a film-forming method of article capable of forming an antireflection film of a low refractive index and improving adhesiveness of the film, and to provide an article formed by using the film-forming method. <P>SOLUTION: A plurality of amorphous fluorinated resins different in refractive index and adhesiveness are mixed in such a proportion as to be able to obtain the specified refractive index and the adhesiveness, the mixture is applied on an article and, thereby, an antireflection film of a low-refractive index is formed on the surface of the article. In the article thus manufactured, the antireflection film of a low-refractive index is formed on the surface of the article while a plurality of the amorphous fluorinated resins different in refractive index and adhesiveness are mixed in such a proportion as to be able to obtain the specified refractive index and the adhesiveness. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、アモルファスフッ素樹脂から構成された、低屈折率の反射防止膜が形成された物品及びその物品の成膜方法に関する。   The present invention relates to an article formed of an amorphous fluororesin and having an antireflective film having a low refractive index, and a film forming method for the article.

従来から、デュポン社製「ＴＥＦＬＯＮ（登録商標）ＡＦ」（商品名）、旭硝子社製「ＣＹＴＯＰ」（商品名、登録商標）等のフッ素系高分子を基板上に設け、反射防止膜を形成する技術が知られている（特許文献１および２参照）。   Conventionally, a fluorine polymer such as “TEFLON (registered trademark) AF” (trade name) manufactured by DuPont and “CYTOP” (trade name, registered trademark) manufactured by Asahi Glass Co., Ltd. is provided on the substrate to form an antireflection film. The technology is known (see Patent Documents 1 and 2).

また、旭硝子社製「ＣＹＴＯＰ」（商品名、登録商標）を用い、反射防止膜を形成する技術も知られている（特許文献３〜６参照）。   In addition, a technique for forming an antireflection film using “CYTOP” (trade name, registered trademark) manufactured by Asahi Glass Co., Ltd. is also known (see Patent Documents 3 to 6).

また、パーフルオロアルキル基を有するアクリル酸もしくはメタクリル酸エステル、ケイ素原子に結合した加水分解性基とラジカル重合性基とを有する単量体の共重合体を含む低屈折率のコーティング剤、および被膜が表面に形成された光学物品も知られている（特許文献５参照）。
特開平４−３５５４０１号公報 特許２６１５１７６号公報 特開平１−１６８７３号公報 特開平１−１４９８０８号公報 特開平６−１１５０２３号公報 特開２００４−５１８４９号公報 Further, a coating agent having a low refractive index, which includes acrylic acid or methacrylic acid ester having a perfluoroalkyl group, a copolymer of a monomer having a hydrolyzable group bonded to a silicon atom and a radical polymerizable group, and a film An optical article having a surface formed on the surface is also known (see Patent Document 5).
JP-A-4-355401 Japanese Patent No. 2615176 JP-A-1-16873 JP-A-1-149808 Japanese Patent Application Laid-Open No. 6-1115023 JP 2004-51849 A

しかしながら、上述したコーティング剤を例えば光ファイバー端面に溶液の状態で塗布して反射防止膜の反射率を低減させる場合、仮に反射率を低減させることができたとしても、密着性が悪く、すぐ剥がれてしまう虞があった。   However, when the reflectance of the antireflection film is reduced by, for example, applying the coating agent described above to the optical fiber end face in the form of a solution, even if the reflectance can be reduced, the adhesiveness is poor and the film is peeled off immediately. There was a risk of it.

そこで、本発明の目的は、低屈折率の反射防止膜を形成すると共に、その膜の密着性を向上させることができる、物品の成膜方法とその成膜方法を用いて成膜した物品を提供することである。   Accordingly, an object of the present invention is to form an article film-forming method and an article film-formed using the film-forming method, which can form an antireflection film having a low refractive index and improve the adhesion of the film. Is to provide.

請求項１に係る発明は、複数の異なるアモルファスフッ素樹脂を所定の割合で混合し、物品に塗布して、物品の表面に低屈折率の反射防止膜を形成することを特徴とする物品の成膜方法である。   The invention according to claim 1 is characterized in that a plurality of different amorphous fluororesins are mixed at a predetermined ratio and applied to the article to form an antireflective film having a low refractive index on the surface of the article. It is a membrane method.

好ましくは、フロロアルキルシリコンの有無により異なる複数のアモルファスフッ素樹脂を組み合わせて用いる。たとえば、好ましくは、フロロアルキルシリコンを有するアモルファスフッ素樹脂と、フロロアルキルシリコンを有さないアモルファスフッ素樹脂とを組み合わせて用いる。   Preferably, a plurality of amorphous fluororesins that differ depending on the presence or absence of fluoroalkyl silicon are used in combination. For example, preferably, an amorphous fluororesin having a fluoroalkyl silicon and an amorphous fluororesin having no fluoroalkyl silicon are used in combination.

また、密着性の優れたアモルファスフッ素樹脂と低屈折率のアモルファスフッ素樹脂とを組合せて使用するのが好ましい。たとえば、アモルファスフッ素樹脂は、フロロアルキルシリコンを有し、かつ密着性の優れたＣＹＴＯＰ（登録商標）と、フロロアルキルシリコンを有さず、かつ低屈折率のＴＥＦＬＯＮ（登録商標）ＡＦ２４００および／またはＴＥＦＬＯＮ（登録商標）ＡＦ１６００との組合せが好ましい。   Further, it is preferable to use a combination of an amorphous fluororesin having excellent adhesion and an amorphous fluororesin having a low refractive index. For example, the amorphous fluororesin includes CYTOP (registered trademark) having fluoroalkyl silicon and excellent adhesion, and TEFLON (registered trademark) AF2400 and / or TEFLON having no low fluoroalkyl silicon and having a low refractive index. A combination with (registered trademark) AF1600 is preferable.

さらに好ましくは、前記ＴＥＦＬＯＮ（登録商標）ＡＦ２４００および／またはＴＥＦＬＯＮ（登録商標）ＡＦ１６００の重量比で１に対して、前記ＣＹＴＯＰ（登録商標）を重量比で０．７５以上混合する。   More preferably, the CYTOP (registered trademark) is mixed by 0.75 or more by weight ratio with respect to 1 by weight ratio of the TEFLON (registered trademark) AF2400 and / or TEFLON (registered trademark) AF1600.

また、請求項７に係る発明は、複数の異なるアモルファスフッ素樹脂が所定の割合で混合された状態で、低屈折率の反射防止膜が表面に形成されていることを特徴とする物品である。   The invention according to claim 7 is an article characterized in that an antireflective film having a low refractive index is formed on the surface in a state where a plurality of different amorphous fluororesins are mixed at a predetermined ratio.

好ましくは、フロロアルキルシリコンを有するアモルファスフッ素樹脂と、フロロアルキルシリコンを有さないアモルファスフッ素樹脂とを組み合わせて用いる。   Preferably, an amorphous fluororesin having fluoroalkyl silicon and an amorphous fluoro resin not having fluoroalkyl silicon are used in combination.

また、密着性の優れたアモルファスフッ素樹脂と低屈折率のアモルファスフッ素樹脂とを組合せて使用するのが好ましい。たとえば、物品のアモルファスフッ素樹脂は、密着性の優れたＣＹＴＯＰ（登録商標）と、低屈折率のＴＥＦＬＯＮ（登録商標）ＡＦ２４００および／または低屈折率ＴＥＦＬＯＮ（登録商標）ＡＦ１６００との組合せである。   Further, it is preferable to use a combination of an amorphous fluororesin having excellent adhesion and an amorphous fluororesin having a low refractive index. For example, the amorphous fluororesin of the article is a combination of CYTOP (registered trademark) having excellent adhesion and TEFLON (registered trademark) AF2400 having a low refractive index and / or TEFLON (registered trademark) AF1600 having a low refractive index.

前記物品において、前記ＴＥＦＬＯＮ（登録商標）ＡＦ２４００および／またはＴＥＦＬＯＮ（登録商標）ＡＦ１６００の重量比で１に対して、前記ＣＹＴＯＰ（登録商標）が重量比で０．７５以上混合されているのが好ましい。   In the article, it is preferable that CYTOP (registered trademark) is mixed by 0.75 or more by weight ratio with respect to 1 by weight ratio of TEFLON (registered trademark) AF2400 and / or TEFLON (registered trademark) AF1600. .

例えば、素材が固体で、フロロアルキルシリコンを有し、物品表面への密着性に優れた旭硝子社製のＣＹＴＯＰ（登録商標）や、素材が固体で、フロロアルキルシリコンを有さず、低屈折率のデュポン社製のＴＥＦＬＯＮ（登録商標）ＡＦ２４００、ＴＥＦＬＯＮ（登録商標）ＡＦ１６００等を用いて、それらの複数の異なるアモルファスフッ素樹脂を所定の割合（たとえば所望の密着性と低屈折率の両方の良好な特性が得られる割合）で混合し、光ファイバーや光学レンズ、ガラス板、アクリル板等の樹脂等の物品の表面に塗布する。   For example, CYTOP (registered trademark) manufactured by Asahi Glass Co., Ltd., which is a solid material, has fluoroalkyl silicon, and has excellent adhesion to the surface of the article, and has a low refractive index because it is solid and does not have fluoroalkyl silicon Using a TEFLON (registered trademark) AF2400, TEFLON (registered trademark) AF1600, etc. manufactured by DuPont, Inc., and using a plurality of different amorphous fluororesins in a predetermined ratio (for example, both desired adhesion and low refractive index are good) The ratio is obtained at a ratio at which characteristics are obtained) and applied to the surface of an article such as a resin such as an optical fiber, an optical lens, a glass plate, or an acrylic plate.

光ファイバーや光学レンズ、ガラス板、アクリル板等の樹脂等の物品に単に塗布するだけで、所望の低屈折率を実現できると共に、密着性を向上させることができる。   A desired low refractive index can be realized and adhesion can be improved by simply applying it to an article such as an optical fiber, an optical lens, a glass plate, an acrylic plate or the like.

以下、本発明を実施するための最良の形態を説明する。   Hereinafter, the best mode for carrying out the present invention will be described.

膜（コート）の素材は、旭硝子社製ＣＹＴＯＰ（登録商標）および／またはデュポン社製ＴＥＦＬＯＮ（登録商標）ＡＦ２４００を用いる。デュポン社製ＴＥＦＬＯＮ（登録商標）ＡＦ１６００を用いてもよい。   As the material of the film (coat), CYTOP (registered trademark) manufactured by Asahi Glass Co., Ltd. and / or TEFLON (registered trademark) AF2400 manufactured by DuPont is used. TEFLON (registered trademark) AF1600 manufactured by DuPont may be used.

溶媒としては、旭硝子社製のＣＴ−Ｓｏｌｖ１００（商品名）を用いる。   As the solvent, CT-Solv100 (trade name) manufactured by Asahi Glass Co., Ltd. is used.

アモルファスフッ素樹脂「ＣＹＴＯＰ」は、フロロアルキルシリコンを有しており、素材が液体状であり、本来のフッ素樹脂の特性（耐熱性、耐薬品性、電気的特性、撥水撥油性及び溶融成形性）を併せ持つ素材であるとともに、可視光線透過率９５％以上と透明性が極めて高い特殊なパーフルオロ溶媒に溶解が可能なもので、サブミクロンの薄膜コーティングが出来る。たとえば、薄膜コーティング性がパーフルオロ溶剤可溶で、膜厚０．１μｍ〜である。屈折率が１．３４で、光線透過率（％）が９５で、アッベ数が９０である。ガラス転移温度（℃）が１０８、密度（ｇ／ｃｍ３）が２．０３、接触角（°）が１１０、臨界表面張力（ｍＮ／ｍ）が１９γｃである。 Amorphous fluororesin “CYTOP” has fluoroalkyl silicon, and the material is liquid. The characteristics of the original fluororesin (heat resistance, chemical resistance, electrical characteristics, water / oil repellency and melt moldability) ), And can be dissolved in a special perfluoro solvent having a very high transparency with a visible light transmittance of 95% or more, and a submicron thin film coating can be achieved. For example, the thin film coating property is soluble in a perfluoro solvent, and the film thickness is from 0.1 μm. The refractive index is 1.34, the light transmittance (%) is 95, and the Abbe number is 90. The glass transition temperature (° C.) is 108, the density (g / cm 3 ) is 2.03, the contact angle (°) is 110, and the critical surface tension (mN / m) is 19γc.

アモルファスフッ素樹脂「ＴＥＦＬＯＮ（登録商標）ＡＦ」は、フロロアルキルシリコンを有さず、フリオロポリマーで、可溶性に優れており、高いガス透過性、高い圧縮性、高い耐クリープ性、低い熱伝導性を有し、さらに、アモルファス・ポリマーの固有の特性のため、顕著な光透過性を有する。ＴＥＦＬＯＮ（登録商標）ＡＦのより詳細な特性情報は、http://www．dupont．com/teflon/af/の「Ａｂｏｕｔ Ｔｅｆｌｏｎ（Ｒ） ＡＦ」を参照。とくに、Ｕｎｉｑｕｅ Ｐｒｏｐｅｒｔｉｅｓ ｏｆ Ｔｅｆｌｏｎ（Ｒ） ＡＦと、Ｐｅｒｆｏｒｍａｎｃｅ Ｃｏｍｐａｒｉｓｏｎ ｏｆ Ｔｅｆｌｏｎ（Ｒ） ＡＦ Ｔｙｐｉｃａｌ Ｐｒｏｐｅｒｔｙ Ｄａｔａ ｆｏｒ Ｔｅｆｌｏｎ（Ｒ） ＡＦ Ａｍｏｒｐｈｏｕｓ Ｆｌｕｏｒｏｐｏｌｙｍｅｒｓを参照。これらの記載内容は、本願明細書の記載内容の一部を構成する。   Amorphous fluororesin "TEFLON (registered trademark) AF" is a fluoropolymer with no fluoroalkyl silicone, excellent solubility, high gas permeability, high compressibility, high creep resistance, low thermal conductivity In addition, due to the inherent properties of amorphous polymers, it has significant light transmission. More detailed characteristic information of TEFLON (registered trademark) AF can be found at http: // www. dupont. See "About Teflon (R) AF" at com / teflon / af /. In particular, refer to Uniform Properties of Teflon (R) AF and Performance Comparison of Teflon (R) AF Typical Property Data for Teflon (R) AF Amorphous. These descriptions constitute a part of the description of the present specification.

選定するアモルファスフッ素樹脂の好ましい素材の特徴は、表１に示すとおりである。
Table 1 shows the characteristics of preferable materials for the amorphous fluororesin to be selected.

低屈折率の反射防止膜の形成に際しては、好ましくは、ガラス板やアクリル板の物品を異なる複数のアモルファスフッ素樹脂を混合したコート液に浸し、所定の速度で引き上げ、乾燥させる。そのあと、必要に応じて、成膜後の物品（ガラス板とアクリル板）の両面反射率を測定する。   When forming the antireflective film having a low refractive index, preferably, an article such as a glass plate or an acrylic plate is dipped in a coating solution in which a plurality of different amorphous fluororesins are mixed, pulled up at a predetermined speed, and dried. Thereafter, if necessary, the double-sided reflectance of the article (glass plate and acrylic plate) after film formation is measured.

まず、物品がガラス板（ＢＫ７）である実施例１を説明する。   First, Example 1 in which the article is a glass plate (BK7) will be described.

引き上げ速度は、５０ｍｍ／ｍｉｎである。   The pulling speed is 50 mm / min.

「ＡＦ」つまりＴＥＦＬＯＮ（登録商標）ＡＦ２４００：ＣＹＴＯＰ＝１００：７５（重量比）の場合、あるいは、１００：１００（重量比）の場合の両面反射率は、５００〜１０００ｎｍの波長領域で図１に示すとおりであり、最低反射率は、０．７９％である。   The double-sided reflectance when “AF”, that is, TEFLON (registered trademark) AF2400: CYTOP = 100: 75 (weight ratio) or 100: 100 (weight ratio) is shown in FIG. 1 in the wavelength region of 500 to 1000 nm. As shown, the minimum reflectance is 0.79%.

物品がアクリル板（＃０００）である実施例２を説明する。   Example 2 in which the article is an acrylic plate (# 000) will be described.

前述の実施例１と同様に、引き上げ速度は、５０ｍｍ／ｍｉｎである。   Similar to Example 1 described above, the pulling speed is 50 mm / min.

ＴＥＦＬＯＮ（登録商標）ＡＦ２４００：ＣＹＴＯＰ＝１００：７５（重量比）
あるいは、１００：１００（重量比）の場合の両面反射率は、５００〜１０００ｎｍの波長領域で図１に示すとおりであり、最低反射率は、０．９５％である。 TEFLON (registered trademark) AF2400: CYTOP = 100: 75 (weight ratio)
Alternatively, the double-sided reflectance in the case of 100: 100 (weight ratio) is as shown in FIG. 1 in the wavelength region of 500 to 1000 nm, and the minimum reflectance is 0.95%.

次に、前述の実施例１および２について密着性試験を行った。   Next, an adhesion test was performed on Examples 1 and 2 described above.

ガラス板またはアクリル板（樹脂）の両面の反射率を１％以下に抑え、密着性の良否についてはクロスハッチ試験に合格するか否かによって決めた。   The reflectance of both surfaces of the glass plate or acrylic plate (resin) was suppressed to 1% or less, and the quality of adhesion was determined by whether or not the cross hatch test was passed.

粘着テープ（たとえば「セロテープ（登録商標）」を使用）とクロスハッチを用いて、１０回ずつ行い、剥がれるかどうかの試験を行った。その試験結果は、表２に示すとおりである。
Using an adhesive tape (for example, “Cellotape (registered trademark)”) and a cross hatch, the test was performed 10 times each to determine whether or not the film would peel off. The test results are as shown in Table 2.

以上の試験結果からも明らかなように、少なくとも２つの異なるアモルファスフッ素樹脂、好ましくはフロロアルキルシリコンを有さず低屈折率（たとえば１．２９）で密着性の良くないアモルファスフッ素樹脂と、フロロアルキルシリコンを有し、かつ１．２９よりも高い屈折率（たとえば１．３４）を有するが物品表面への密着性の良好なアモルファスフッ素樹脂とを組合せて、密着性と低屈折率の両方の良好な特性を確保できる割合で混合した混合液を使用し、例えばデュポン社製ＴＥＦＬＯＮ（登録商標）ＡＦ２４００と、旭硝子社製ＣＹＴＯＰ（登録商標）を重量比で１００：７５〜１００：１００の割合で混合し、それを例えば溶剤であるＣＴ−Ｓｏｌｖ１００（旭硝子社製、商品名）に溶かした混合液を使用し、ガラス板やアクリル板（樹脂）に塗布して、表面に成膜することによって、反射率を抑えると共に、密着性に優れた成膜方法を実現することができる。   As is clear from the above test results, at least two different amorphous fluororesins, preferably an amorphous fluororesin that does not have fluoroalkyl silicon and has a low refractive index (eg, 1.29) and poor adhesion, and fluoroalkyl Combined with an amorphous fluororesin having silicon and a refractive index higher than 1.29 (eg 1.34) but good adhesion to the surface of the article, both adhesion and low refractive index are good For example, a mixture of TEFLON (registered trademark) AF2400 manufactured by DuPont and CYTOP (registered trademark) manufactured by Asahi Glass Co., Ltd. at a weight ratio of 100: 75 to 100: 100. For example, a mixed solution in which it is dissolved in CT-Solv100 (trade name, manufactured by Asahi Glass Co., Ltd.), which is a solvent, is used. Was applied to drill plate (resin), by depositing on the surface, it suppresses the reflectance can be realized an excellent film forming method in adhesion.

なお、フッ素樹脂固形分濃度は重量モルで４％（４ｗｔ％）である。   The fluororesin solid content concentration is 4% (4 wt%) by weight.

本発明の１つの実施例による物品（ガラス板製のもの）の両面反射率を示すグラフ。The graph which shows the double-sided reflectance of the article | item (made of a glass plate) by one Example of this invention. 本発明の他の実施例による物品（アクリル板製のもの）の両面反射率を示すグラフ。The graph which shows the double-sided reflectance of the articles | goods (made of an acrylic board) by the other Example of this invention.

Claims (11)

複数の異なるアモルファスフッ素樹脂を所定の割合で混合し、物品に塗布して、物品の表面に低屈折率の反射防止膜を形成することを特徴とする物品の成膜方法。   A method for forming an article, comprising mixing a plurality of different amorphous fluororesins at a predetermined ratio and applying the mixture to an article to form an antireflection film having a low refractive index on the surface of the article. アモルファスフッ素樹脂は、フロロアルキルシリコンを有するものと、フロロアルキルシリコンをもたないものとの組合せであることを特徴とする請求項１に記載の物品の成膜方法。   2. The method for forming an article according to claim 1, wherein the amorphous fluororesin is a combination of one having fluoroalkyl silicon and one having no fluoroalkyl silicon. 低屈折率のアモルファスフッ素樹脂と、その低屈折率のアモルファスフッ素樹脂よりも屈折率は高いが物品表面への密着性が優れているアモルファスフッ素樹脂とを所定の低屈折率と密着性を得られる割合で混合し、物品に塗布して、物品の表面に低屈折率の反射防止膜を形成することを特徴とする物品の成膜方法。   A predetermined low refractive index and adhesiveness can be obtained by using an amorphous fluororesin having a low refractive index and an amorphous fluororesin having a higher refractive index than that of the amorphous fluororesin having a low refractive index but excellent adhesion to the article surface. A method for forming an article, comprising mixing at a ratio and coating the article to form an antireflection film having a low refractive index on the surface of the article. 低屈折率のアモルファスフッ素樹脂の素材が固体で、密着性が優れているアモルファスフッ素樹脂の素材が液体であることを特徴とする請求項３に記載の物品の成膜方法。   The method for forming an article according to claim 3, wherein the material of the amorphous fluororesin having a low refractive index is solid and the material of the amorphous fluororesin having excellent adhesion is a liquid. アモルファスフッ素樹脂は、ＣＹＴＯＰ（登録商標）、ＴＥＦＬＯＮ（登録商標）ＡＦ２４００、およびＴＥＦＬＯＮ（登録商標）ＡＦ１６００から選択した少なくとも２つを混合したものであることを特徴とする請求項１〜４のいずれかに記載の物品の成膜方法。   The amorphous fluororesin is a mixture of at least two selected from CYTOP (registered trademark), TEFLON (registered trademark) AF2400, and TEFLON (registered trademark) AF1600. The film-forming method of the article | item described in. 重量比で、ＴＥＦＬＯＮ（登録商標）ＡＦ２４００およびＴＥＦＬＯＮ（登録商標）ＡＦ１６００の少なくとも１つの１００部と、ＣＹＴＯＰ（登録商標）の７５部以上とを混合してアモルファスフッ素樹脂をつくることを特徴とする請求項５に記載の物品の成膜方法。   The amorphous fluororesin is produced by mixing 100 parts of at least one of TEFLON (registered trademark) AF2400 and TEFLON (registered trademark) AF1600 and 75 parts or more of CYTOP (registered trademark) in a weight ratio. Item 6. The method for forming an article according to Item 5. 複数の異なるアモルファスフッ素樹脂が所定の割合で混合された状態で低屈折率の反射防止膜が表面に形成されていることを特徴とする物品。   An article having an antireflection film having a low refractive index formed on a surface in a state where a plurality of different amorphous fluororesins are mixed at a predetermined ratio. アモルファスフッ素樹脂は、フロロアルキルシリコンを有するものと、フロロアルキルシリコンをもたないものとの組合せであることを特徴とする請求項７に記載の物品。   The article according to claim 7, wherein the amorphous fluororesin is a combination of one having fluoroalkyl silicon and one having no fluoroalkyl silicon. 低屈折率のアモルファスフッ素樹脂と、その低屈折率のアモルファスフッ素樹脂よりも屈折率は高いが物品表面への密着性が優れているアモルファスフッ素樹脂が所定の低屈折率と密着性を得られる割合で混合された状態で低屈折率の反射防止膜が表面に形成されていることを特徴とする物品。   Low refractive index amorphous fluororesin and the proportion of amorphous fluororesin that has a higher refractive index than the low refractive index amorphous fluororesin but has excellent adhesion to the surface of the article, and provides a predetermined low refractive index and adhesion An article having an antireflective film having a low refractive index formed on the surface thereof in a mixed state. アモルファスフッ素樹脂は、ＣＹＴＯＰ（登録商標）、ＴＥＦＬＯＮ（登録商標）ＡＦ２４００、およびＴＥＦＬＯＮ（登録商標）ＡＦ１６００から選択した少なくとも２つを混合したものであることを特徴とする請求項７〜９のいずれかに記載の物品。   The amorphous fluororesin is a mixture of at least two selected from CYTOP (registered trademark), TEFLON (registered trademark) AF2400, and TEFLON (registered trademark) AF1600. Articles described in 1. 重量比で、ＴＥＦＬＯＮ（登録商標）ＡＦ２４００およびＴＥＦＬＯＮ（登録商標）ＡＦ１６００の少なくとも１つの１００部と、ＣＹＴＯＰ（登録商標）の７５部以上が混合されてアモルファスフッ素樹脂がつくられていることを特徴とする請求項１０に記載の物品。

100 parts of TEFLON (registered trademark) AF2400 and TEFLON (registered trademark) AF1600 in a weight ratio and 75 parts or more of CYTOP (registered trademark) are mixed to form an amorphous fluororesin. The article of claim 10.

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JP2004012592A (en) * 2002-06-04 2004-01-15 Tomoegawa Paper Co Ltd Near infrared ray absorption and antireflection combined functional film
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JP2008152025A (en) * 2006-12-18 2008-07-03 Topcon Corp Moisture-proof coating method of polarizing plate and polarizing plate manufactured by the method

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