JP2017052824A - Copolymerized polyester resin and ultraviolet cut film - Google Patents

Copolymerized polyester resin and ultraviolet cut film Download PDF

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JP2017052824A
JP2017052824A JP2015175732A JP2015175732A JP2017052824A JP 2017052824 A JP2017052824 A JP 2017052824A JP 2015175732 A JP2015175732 A JP 2015175732A JP 2015175732 A JP2015175732 A JP 2015175732A JP 2017052824 A JP2017052824 A JP 2017052824A
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polyester resin
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resin
ultraviolet cut
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JP6746284B2 (en
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沙那美 師井
Sanami Moroi
沙那美 師井
一輝 池本
Kazuki Ikemoto
一輝 池本
秀明 外村
Hideaki Sotomura
秀明 外村
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Daiwa Can Co Ltd
Daiwa Kasei KK
Bell Polyester Products Inc
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Daiwa Kasei KK
Bell Polyester Products Inc
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Abstract

PROBLEM TO BE SOLVED: To provide a polyester resin film which exhibits excellent ultraviolet cut performance, particularly, with a thickness of approximately 10 to 100 μm, and has good color tone.SOLUTION: A copolymerized polyester resin contains aromatic dicarboxylic acid as a main acid component, and contains (a) 50 to 95 mol% of 1,4-butanediol and (b) 5 to 20 mol% of a diol compound having a benzotriazol group represented by formula (1), as glycol components.EFFECT: The polyester resin film has excellent ultraviolet cut performance that light transmittance of 390 nm is 10% or less, and light transmittance of 380 nm is 1% or less, with a thickness of 20 μm.SELECTED DRAWING: None

Description

本発明は、紫外線をカットする共重合ポリエステル樹脂及びそれを用いた紫外線カットフィルム、特に10〜100μm程度の厚みで優れた紫外線カット性能を示し、且つ色調の良好なポリエステル樹脂フィルムに関する。   The present invention relates to a copolyester resin that cuts ultraviolet rays and an ultraviolet cut film using the same, and more particularly to a polyester resin film that exhibits excellent ultraviolet cut performance at a thickness of about 10 to 100 μm and has a good color tone.

従来、紫外線吸収剤を樹脂中へ配合した紫外線カットフィルムが、被覆される物品の紫外線による劣化を防ぐ目的で広く使用されている。しかし、従来のように、紫外線吸収剤を樹脂の重合時に添加したり、あるいは紫外線吸収剤と樹脂を混練してマスターバッチを作成する方法では、紫外線吸収剤を多量に樹脂中に配合することができなかった。なぜなら、紫外線吸収剤を樹脂中に多量に添加すると、樹脂の機械的強度が低下してしまうことがあり、また、長時間の使用により紫外線吸収剤が揮発してしまったり、ブリードアウトしてしまうおそれがあるためである。   Conventionally, an ultraviolet cut film in which an ultraviolet absorber is blended in a resin has been widely used for the purpose of preventing deterioration of articles to be coated due to ultraviolet rays. However, in the conventional method of adding a UV absorber during polymerization of a resin or kneading a UV absorber and a resin to create a master batch, a large amount of the UV absorber can be blended in the resin. could not. This is because if a large amount of UV absorber is added to the resin, the mechanical strength of the resin may decrease, and the UV absorber may volatilize or bleed out when used for a long time. This is because there is a fear.

このような問題を解決するため、例えば、特許文献1には、ポリエステル樹脂の末端にベンゾトリアゾール基を有する紫外線吸収剤を結合した末端変性ポリエステル樹脂の製造方法が提案されているものの、最良のものでも、約100μmの厚みで380nmの光透過率が10%程度であり、これよりも薄膜化すると十分な紫外線カット性能が得られない。   In order to solve such problems, for example, Patent Document 1 proposes a method for producing a terminal-modified polyester resin in which an ultraviolet absorber having a benzotriazole group is bonded to the terminal of the polyester resin, but the best one is proposed. However, the light transmittance at about 380 nm is about 10% with a thickness of about 100 μm, and if the film is made thinner than this, sufficient UV cut performance cannot be obtained.

また、特許文献2,3には、エチレンテレフタレートを主体としたポリエステル樹脂中にベンゾトリアゾール誘導体をグリコール成分として共重合したポリエステル樹脂が提案されている。しかしながら、これらの共重合ポリエステル樹脂は、エチレングリコールを使用しているため、製造時に樹脂の着色が生じてしまい、塗料用途などのごく薄い塗膜としては利用できるものの、10μm以上のフィルムとなると色調が悪いという問題があった。   Patent Documents 2 and 3 propose a polyester resin obtained by copolymerizing a benzotriazole derivative as a glycol component in a polyester resin mainly composed of ethylene terephthalate. However, since these copolyester resins use ethylene glycol, the resin is colored at the time of manufacture, and although it can be used as a very thin coating film for paint applications, the color tone becomes 10 μm or more. There was a problem of being bad.

特許第3389703号Patent No. 3389703 特開2002−194071号公報JP 2002-140771 A 特許第2961307号Japanese Patent No. 2961307

本発明は上記課題に鑑みて行なわれたものであり、その目的は、特に10〜100μm程度の厚みで優れた紫外線カット性能を示し、且つ色調の良好なポリエステル樹脂フィルムを提供することにある。   The present invention has been made in view of the above problems, and an object of the present invention is to provide a polyester resin film that exhibits excellent ultraviolet cut performance particularly at a thickness of about 10 to 100 μm and has a good color tone.

本発明者らは、上記課題を解決するため鋭意検討した結果、芳香族ジカルボン酸と1,4−ブタンジオールを主成分とするポリエステル樹脂に、ベンゾトリアゾール基を有するジオール化合物を共重合したポリエステル樹脂を用いてフィルムを作製することによって、厚さ20μmのフィルムで390nmの光透過率が10%以下、380nmの光透過率が1%以下の優れた紫外線カット性能を有し、且つ色調も良好で、紫外光暴露後の黄変もほとんど生じない紫外線カットフィルムが得られることを見出し、本発明を完成するに至った。   As a result of intensive studies to solve the above-mentioned problems, the present inventors have found that a polyester resin in which an aromatic dicarboxylic acid and 1,4-butanediol as main components are copolymerized with a diol compound having a benzotriazole group. With a film of 20 μm in thickness, the light transmittance at 390 nm is 10% or less, the light transmittance at 380 nm is 1% or less, and the color tone is also good. The inventors have found that an ultraviolet cut film with little yellowing after exposure to ultraviolet light can be obtained, and have completed the present invention.

すなわち、本発明にかかる共重合ポリエステル樹脂は、主たる酸成分として芳香族ジカルボン酸を含み、グリコール成分として(a)1,4−ブタンジオールを50〜95mol%、(b)下記一般式(1)で示されるベンゾトリアゾール基を有するジオール化合物を5〜20mol%含むことを特徴とする。

Figure 2017052824
That is, the copolyester resin according to the present invention contains an aromatic dicarboxylic acid as a main acid component, (a) 50 to 95 mol% of 1,4-butanediol as a glycol component, and (b) the following general formula (1) It contains 5 to 20 mol% of a diol compound having a benzotriazole group represented by
Figure 2017052824

また、本発明にかかる紫外線カットフィルムは、前記共重合ポリエステル樹脂からなる厚さ10〜100μmの樹脂層を有することを特徴とする。   Moreover, the ultraviolet cut film concerning this invention has a 10-100 micrometers thick resin layer which consists of the said copolyester resin, It is characterized by the above-mentioned.

本発明の共重合ポリエステル樹脂を用いて作成されたフィルムは、10〜100μm程度の厚みで優れた紫外線カット性能を示し、且つ色調も良好で黄変も生じ難い。このため、特に薄膜化の必要なディスプレイ材料や太陽電池用の保護フィルムなどの各種フィルム材料として好適に用いることができる。   The film prepared using the copolymerized polyester resin of the present invention exhibits excellent ultraviolet cut performance with a thickness of about 10 to 100 μm, has a good color tone, and hardly causes yellowing. For this reason, it can use suitably as various film materials, such as a display material and a protective film for solar cells which need especially thin film formation.

以下に、本発明を詳細に説明する。本発明の共重合ポリエステル樹脂は、主たる酸成分として芳香族ジカルボン酸を含み、グリコール成分として(a)1,4−ブタンジオールを50〜95mol%、(b)ベンゾトリアゾール基を有するジオール化合物を5〜20mol%含むことを特徴とする   The present invention is described in detail below. The copolymer polyester resin of the present invention contains an aromatic dicarboxylic acid as a main acid component, (a) 50 to 95 mol% of 1,4-butanediol as a glycol component, and (b) 5 diol compounds having a benzotriazole group. It is characterized by containing ~ 20 mol%

本発明の共重合ポリエステル樹脂には、主たる酸成分として芳香族ジカルボン酸が含まれる。芳香族ジカルボン酸としては、例えば、テレフタル酸、イソフタル酸、フタル酸、2,6−ナフタレンジカルボン酸、2,7−ナフタレンジカルボン酸、1,5−ナフタレンジカルボン酸、1,4−ナフタレンジカルボン酸等が挙げられる。これら芳香族ジカルボン酸は、それぞれ単独で、あるいは必要に応じて2種類以上を併用してもよい。また、これらのうち、テレフタル酸を最も好適に用いることができる。芳香族ジカルボン酸の含量は、全酸成分に対して95mol%以上であり、酸成分の全量が芳香族ジカルボン酸であってよい。なお、芳香族ジカルボン酸は、通常、未置換体あるいはメチルエステル等のアルキルエステルとして反応に供される。   The copolymerized polyester resin of the present invention contains an aromatic dicarboxylic acid as a main acid component. Examples of the aromatic dicarboxylic acid include terephthalic acid, isophthalic acid, phthalic acid, 2,6-naphthalenedicarboxylic acid, 2,7-naphthalenedicarboxylic acid, 1,5-naphthalenedicarboxylic acid, 1,4-naphthalenedicarboxylic acid, and the like. Is mentioned. These aromatic dicarboxylic acids may be used alone or in combination of two or more as required. Of these, terephthalic acid can be most preferably used. The content of the aromatic dicarboxylic acid may be 95 mol% or more with respect to the total acid component, and the total amount of the acid component may be an aromatic dicarboxylic acid. In addition, aromatic dicarboxylic acid is normally used for reaction as alkyl esters, such as an unsubstituted form or methyl ester.

芳香族ジカルボン酸以外のジカルボン酸はとしては、コハク酸、アジピン酸、セバシン酸等の脂肪族ジカルボン酸等が挙げられる。これらは、全酸成分に対して5mol%未満の範囲で用いてもよく、それぞれ単独で、あるいは必要に応じて2種類以上を併用してもよい。   Examples of the dicarboxylic acid other than the aromatic dicarboxylic acid include aliphatic dicarboxylic acids such as succinic acid, adipic acid, and sebacic acid. These may be used in a range of less than 5 mol% with respect to the total acid component, and may be used alone or in combination of two or more as required.

本発明の共重合ポリエステル樹脂には、グリコール成分として、(a)1,4−ブタンジオールと(b)ベンゾトリアゾール基を有するジオール化合物が含まれる。(a)1,4−ブタンジオールの含有量は、全グリコール成分に対して50〜95mol%であり、さらに好ましくは60〜95mol%である。(a)1,4−ブタンジオールの含量が50mol未満の場合は樹脂が着色してしまう場合があり、また、重合時間が著しく長くなる等の問題が生じるおそれがある。   The copolymer polyester resin of the present invention includes (a) 1,4-butanediol and (b) a diol compound having a benzotriazole group as a glycol component. (A) Content of 1, 4- butanediol is 50-95 mol% with respect to all the glycol components, More preferably, it is 60-95 mol%. (A) When the content of 1,4-butanediol is less than 50 mol, the resin may be colored, and there may be a problem that the polymerization time is remarkably increased.

本発明に用いられる(b)ベンゾトリアゾール基を有するジオール化合物は、下記一般式(1)に示す構造の化合物、2,2’−メチレンビス[6−(2H−ベンゾトリアゾール−2−イル)−4−(2−ヒドロキシエチル)フェノールである。

Figure 2017052824
The diol compound having a benzotriazole group (b) used in the present invention is a compound having a structure represented by the following general formula (1): 2,2′-methylenebis [6- (2H-benzotriazol-2-yl) -4 -(2-Hydroxyethyl) phenol.
Figure 2017052824

(b)ベンゾトリアゾール化合物の含量は、全グリコール成分に対して5〜20mol%である。5mol%未満の場合、フィルムに十分な紫外線カット性を与えることができず、20mol%を超えると、相対粘度が上がらず、フィルムの機械的強度が低下するおそれがある。また、(b)ベンゾトリアゾール化合物は他の汎用モノマー成分に対して高コストであるものの、おおよそ20mol%程度共重合することで厚み20μmフィルムにおける390nm以下の光線透過率が0.1%以下となり、実使用に十分な程度の紫外線カット性能を付与することができるため、コストの面でも20mol%以下とすることが好ましい。   (B) The content of the benzotriazole compound is 5 to 20 mol% with respect to the total glycol component. When the amount is less than 5 mol%, sufficient ultraviolet ray-cutting property cannot be imparted to the film. When the amount exceeds 20 mol%, the relative viscosity does not increase, and the mechanical strength of the film may decrease. In addition, although (b) the benzotriazole compound is expensive relative to other general-purpose monomer components, the light transmittance of 390 nm or less in a 20 μm-thick film becomes 0.1% or less by copolymerizing about 20 mol%, Since it is possible to provide an ultraviolet ray cutting performance sufficient for actual use, it is preferably 20 mol% or less in terms of cost.

また、(a)1,4−ブタンジオール、(b)ベンゾトリアゾール化合物以外のグリコール成分としては、例えば、1,3−プロパンジオール、1,2−ブタンジオール、1,6−へキサンジオール、ネオペンチルグリコール、2−ブチル−2−エチル−1,3−プロパンジオール、1,4−シクロヘキサンジメタノール、ジエチレングリコール等が挙げられ、これらはそれぞれ単独で、あるいは必要に応じて2種類以上併用してもよい。特に、1,4−シクロヘキサンジメタノールを全グリコール成分中10〜20mol%共重合することが好適である。1,4−シクロヘキサンジメタノールを10〜20mol%共重合することで、ガラス転移温度(Tg)が50℃〜80℃、結晶化温度(Tc)が100℃以上になり、他のポリエステル樹脂との多層フィルムとした場合にも延伸処理が可能になる。   Examples of glycol components other than (a) 1,4-butanediol and (b) benzotriazole compounds include 1,3-propanediol, 1,2-butanediol, 1,6-hexanediol, neo Examples include pentyl glycol, 2-butyl-2-ethyl-1,3-propanediol, 1,4-cyclohexanedimethanol, diethylene glycol and the like. These may be used alone or in combination of two or more as required. Good. In particular, it is preferable to copolymerize 1,4-cyclohexanedimethanol in a total glycol component of 10 to 20 mol%. By copolymerizing 1,4-cyclohexanedimethanol with 10 to 20 mol%, the glass transition temperature (Tg) is 50 ° C. to 80 ° C., the crystallization temperature (Tc) is 100 ° C. or higher, and other polyester resins are used. Even when a multilayer film is formed, stretching can be performed.

なお、本発明の共重合ポリエステル樹脂を製造する際、ホスファイト系酸化防止剤を0.01〜0.5質量%添加することが望ましく、添加量はより好ましくは0.05〜0.2質量%である。ホスファイト系酸化防止剤を所定量添加することによって、重合時あるいは加工時の樹脂の着色が抑えられる。添加量が0.01質量%未満では、着色防止効果が十分に得られない場合があり、一方で0.5質量%を超えると、目標とする重合度の樹脂が得られなかったり、かえって樹脂の着色の原因となってしまう場合がある。   In addition, when manufacturing the copolyester resin of this invention, it is desirable to add 0.01-0.5 mass% of phosphite type | system | group antioxidants, More preferably, the addition amount is 0.05-0.2 mass. %. By adding a predetermined amount of a phosphite antioxidant, coloring of the resin during polymerization or processing can be suppressed. If the addition amount is less than 0.01% by mass, the anti-coloring effect may not be sufficiently obtained. On the other hand, if the addition amount exceeds 0.5% by mass, a resin having a target degree of polymerization may not be obtained. It may cause coloring of.

ホスファイト系酸化防止剤の例としては、3,9−ビス(2,6−ジ−t−ブチル−4−メチルフェノキシ)−2,4,8,10−テトラオキサ−3,9−ジホスファスピロ[5,5]ウンデカン、トリス(2,4−ジ−t−ブチルフェニル)ホスファイト、トリフェニルホスファイト等が挙げられるが、特に3,9−ビス(2,6−ジ−t−ブチル−4−メチルフェノキシ)−2,4,8,10−テトラオキサ−3,9−ジホスファスピロ[5,5]ウンデカンが好ましい。   Examples of phosphite antioxidants include 3,9-bis (2,6-di-t-butyl-4-methylphenoxy) -2,4,8,10-tetraoxa-3,9-diphosphaspiro [5. , 5] undecane, tris (2,4-di-t-butylphenyl) phosphite, triphenyl phosphite, etc., among others, 3,9-bis (2,6-di-t-butyl-4- Methylphenoxy) -2,4,8,10-tetraoxa-3,9-diphosphaspiro [5,5] undecane is preferred.

本発明の共重合ポリエステル樹脂は、相対粘度(フェノール/テトラクロロエタン=60/40(重量比)混合溶媒)が1.3以上であることが好ましく、さらに好ましくは1.5以上である。相対粘度が1.3未満ではフィルムの機械的強度が不十分となる場合がある。   The copolyester resin of the present invention preferably has a relative viscosity (phenol / tetrachloroethane = 60/40 (weight ratio) mixed solvent) of 1.3 or more, more preferably 1.5 or more. If the relative viscosity is less than 1.3, the mechanical strength of the film may be insufficient.

本発明の共重合ポリエステル樹脂の製造方法は、特に制限されるものではなく、公知の方法に従って行なうことができる。なお、(b)ベンゾトリアゾール化合物の添加時期は、酸成分とグリコール成分を溶融重合する際であれば、特に制限はない。   The method for producing the copolyester resin of the present invention is not particularly limited, and can be performed according to a known method. In addition, there is no restriction | limiting in particular if the addition time of (b) benzotriazole compound is at the time of melt-polymerizing an acid component and a glycol component.

例えば、芳香族ジカルボン酸アルキルエステルと、(a)1,4−ブタンジオールと(b)ベンゾトリアゾール化合物を含むグリコール成分を、必要に応じてホスファイト系酸化防止剤等を添加してエステル交換反応させた後、重合する方法を採用することができる。また、これらの重合あるいはエステル交換反応の際に、公知の各種触媒,安定剤,改質剤あるいは添加剤などを使用してもよい。なお、本発明の共重合ポリエステル樹脂の重合温度は250℃以下が好ましく、より好ましくは融点以上で240℃以下である。240℃以下で重合することにより、得られる樹脂の色調がさらに良くなる。   For example, an aromatic dicarboxylic acid alkyl ester, a glycol component containing (a) 1,4-butanediol and (b) a benzotriazole compound, and a phosphite antioxidant, etc., if necessary, are subjected to a transesterification reaction. Then, a polymerization method can be employed. In the polymerization or transesterification reaction, various known catalysts, stabilizers, modifiers, additives and the like may be used. In addition, the polymerization temperature of the copolyester resin of the present invention is preferably 250 ° C. or lower, more preferably from the melting point to 240 ° C. By polymerizing at 240 ° C. or lower, the color tone of the obtained resin is further improved.

本発明の紫外線カットフィルムは、前記共重合ポリエステル樹脂からなる厚さ10〜100μmの樹脂層を少なくとも一層有する単層又は多層のフィルムである。本発明の紫外線カットフィルムの製造は、従来公知の方法で行えばよく、例えば、前記共重合ポリエステル樹脂を用いて押出法やカレンダー法等の任意の方法によって未延伸フィルムを作成し、次いで一方向あるいは二方向に延伸してフィルムを得る。延伸手段については、特に制限はなく、ロール延伸、テンター延伸等の方法が適用され、用途に応じて一軸延伸、逐次二軸延伸、同時二軸延伸いずれでもよい。延伸後、フィルムの耐熱性、寸法安定性等を向上させる目的で熱処理を行なってもよい。   The ultraviolet cut film of the present invention is a single-layer or multilayer film having at least one resin layer having a thickness of 10 to 100 μm made of the above-described copolymerized polyester resin. The production of the ultraviolet cut film of the present invention may be carried out by a conventionally known method. For example, an unstretched film is prepared by an arbitrary method such as an extrusion method or a calendar method using the copolymer polyester resin, and then unidirectional. Alternatively, the film is obtained by stretching in two directions. The stretching means is not particularly limited, and methods such as roll stretching and tenter stretching are applied, and any of uniaxial stretching, sequential biaxial stretching, and simultaneous biaxial stretching may be used depending on the application. After stretching, heat treatment may be performed for the purpose of improving the heat resistance and dimensional stability of the film.

また、本発明の紫外線カットフィルムは、前記共重合ポリエステル樹脂のみからなる単層フィルムであってもよく、あるいは汎用のポリエステル樹脂等の熱可塑性樹脂との共押し出しによる多層フィルムとしてもよい。   In addition, the ultraviolet cut film of the present invention may be a single layer film composed only of the copolymer polyester resin, or may be a multilayer film by co-extrusion with a thermoplastic resin such as a general-purpose polyester resin.

以下、実施例により本発明をさらに詳しく説明する。なお、以下の実施例における特性値は、次に示す方法で評価したものである。   Hereinafter, the present invention will be described in more detail with reference to examples. The characteristic values in the following examples are evaluated by the following methods.

<評価基準>
(1)相対粘度
実施例及び比較例にて得られた各種共重合ポリエステル樹脂を、フェノール/テトラクロロエタン=60/40(重量比)の混合溶媒に溶解し、ウベローデ粘度管を装着した自動粘度測定装置(サン電子工業製:ALC−6C)を用いて、20℃にて溶液粘度を測定した。
<Evaluation criteria>
(1) Relative viscosity Automatic viscosity measurement with various copolyester resins obtained in Examples and Comparative Examples dissolved in a mixed solvent of phenol / tetrachloroethane = 60/40 (weight ratio) and equipped with an Ubbelohde viscometer. The solution viscosity was measured at 20 ° C. using an apparatus (manufactured by Sun Electronics Co., Ltd .: ALC-6C).

(2)ガラス転移温度(Tg),結晶化温度(Tc)及び融点(Tm)
実施例及び比較例にて得られた各種共重合ポリエステル樹脂10mgを走査型示差熱量計DSC(Perkin Elmer社製:DSC7)を用いて、10℃/分の昇温速度で測定した。
(2) Glass transition temperature (Tg), crystallization temperature (Tc) and melting point (Tm)
10 mg of various copolyester resins obtained in the examples and comparative examples were measured at a heating rate of 10 ° C./min using a scanning differential calorimeter DSC (manufactured by Perkin Elmer: DSC7).

(3)フィルムの透過率の測定方法
実施例及び比較例にて得られた各種共重合ポリエステル樹脂を用いて作製した厚さ20μmのフィルムについて、分光光度計(日立製作所製:U−3010)を用いて、380nm、390nmの紫外線の透過率を測定した。
(3) Measuring method of transmittance of film A spectrophotometer (manufactured by Hitachi, Ltd .: U-3010) is used for a film having a thickness of 20 μm prepared using various copolyester resins obtained in Examples and Comparative Examples. Used, the transmittance of ultraviolet rays at 380 nm and 390 nm was measured.

(4)色調(カラーL値,a値、b値、YI値)
実施例及び比較例にて得られた各種共重合ポリエステル樹脂を用いて作製した厚さ20μmのフィルムについて、色差計(日本電色社製: ZE−2000)を用いて、ハンターL値、a値、b値及びYI値を測定した。
(4) Color tone (color L value, a value, b value, YI value)
About the film of thickness 20 micrometers produced using the various copolyester resin obtained in the Example and the comparative example, Hunter L value, a value using a color difference meter (Nippon Denshoku Co., Ltd. product: ZE-2000). , B value and YI value were measured.

(5)暴露試験
実施例及び比較例にて得られた各種共重合ポリエステル樹脂を用いて作製した厚さ20μmのフィルムに、促進耐光性試験機(スガ試験機社製MV3000)を用いて放射照度0.53kW/m、ブラックパネル温度63℃、湿度50%RHで150時間暴露試験を実施し、試験後のYI値を以上と同様に測定した。
(5) Exposure test Irradiance using an accelerated light resistance tester (MV3000 manufactured by Suga Test Instruments Co., Ltd.) on a film having a thickness of 20 μm prepared using various copolyester resins obtained in Examples and Comparative Examples. An exposure test was conducted at 0.53 kW / m 2 , a black panel temperature of 63 ° C. and a humidity of 50% RH for 150 hours, and the YI value after the test was measured in the same manner as described above.

<実施例1>
ポリエステル樹脂の理論スケールを10kgとして、ジメチルテレフタレート7.7kg、1,4−ブタンジオール6.88kg、2,2’−メチレンビス[6−(2H−ベンゾトリアゾール−2−イル)−4−(2−ヒドロキシエチル)フェノール](大和化成社製:DAINSORB T−33)1.53kg、モノブチルスズ17.6g、3,9−ビス(2,6−ジ−t−ブチル4−メチルフェノキシ)−2,4,8,10−テトラオキサ−3,9−ジホスファスピロ[5,5]ウンデカン(ADEKA社製:アデカスタブPEP−36)10gを、精留塔を備えた30Lオートクレーブに仕込み、窒素フローしつつ、大気圧下、内温220℃まで昇温しながらエステル交換反応を行った。その後、1時間かけて133Pa以下まで減圧し、この間に内温を220℃から240℃に引き上げ、133Pa以下の高真空で所定の粘度まで重縮合反応を行い、口金から策状に水中に押出し、ペレタイザーでカットして、共重合ポリエステル樹脂のペレットを得た。得られた共重合ポリエステル樹脂について、相対粘度、ガラス転移点(Tg)、結晶化温度(Tc)及び融点(Tm)を測定した。
<Example 1>
When the theoretical scale of the polyester resin is 10 kg, dimethyl terephthalate 7.7 kg, 1,4-butanediol 6.88 kg, 2,2′-methylenebis [6- (2H-benzotriazol-2-yl) -4- (2- Hydroxyethyl) phenol] (Daiwa Chemical Co., Ltd .: DAINSORB T-33) 1.53 kg, monobutyltin 17.6 g, 3,9-bis (2,6-di-t-butyl-4-methylphenoxy) -2,4 , 8,10-Tetraoxa-3,9-diphosphaspiro [5,5] undecane (manufactured by ADEKA: ADK STAB PEP-36) was charged into a 30 L autoclave equipped with a rectifying column, and nitrogen flowed under atmospheric pressure. The ester exchange reaction was carried out while raising the internal temperature to 220 ° C. Thereafter, the pressure is reduced to 133 Pa or less over 1 hour, the internal temperature is raised from 220 ° C. to 240 ° C. during this time, a polycondensation reaction is performed to a predetermined viscosity at a high vacuum of 133 Pa or less, and the product is extruded into water in a measure from the die. Cut with a pelletizer to obtain copolymer polyester resin pellets. About the obtained copolyester resin, the relative viscosity, the glass transition point (Tg), the crystallization temperature (Tc), and the melting point (Tm) were measured.

以上で得られた共重合ポリエステル樹脂を、120℃で12時間以上真空乾燥を行った後、単軸押出成形機(東洋精機社製:ラボプラストミル)を用いて、成形温度240℃にて180μmの未延伸フィルムを成形し、さらに2軸延伸機(東洋精機社製:二軸延伸試験装置)を用いて厚さ20μmの延伸フィルムを得た。このフィルムの色調(YI)を色差計で測定し、390nmと380nmの紫外線の透過率を分光光度計で測定した。さらに、このフィルムに促進耐光試験機により所定の紫外線照射処理を行った後、色調(YI)を測定し、ΔYI(YI−YI)を求めた。 The copolyester resin obtained above is vacuum-dried at 120 ° C. for 12 hours or more, and then 180 μm at a molding temperature of 240 ° C. using a single screw extruder (Toyo Seiki Co., Ltd .: Labo Plast Mill). The unstretched film was molded, and a stretched film having a thickness of 20 μm was obtained using a biaxial stretching machine (manufactured by Toyo Seiki Co., Ltd .: biaxial stretching test apparatus). The color tone (YI 0 ) of this film was measured with a color difference meter, and the transmittances of ultraviolet rays at 390 nm and 380 nm were measured with a spectrophotometer. Further, the film was subjected to a predetermined ultraviolet irradiation treatment with an accelerated light resistance tester, and then the color tone (YI) was measured to obtain ΔYI (YI−YI 0 ).

<実施例2〜4>
ポリマー組成を表1に示すように変更したほかは、実施例1と同様にして共重合ポリエステル樹脂のペレットを得た。そして、上記実施例1と同様、延伸フィルムの作製及び評価試験を行なった。
<Examples 2 to 4>
Copolymerized polyester resin pellets were obtained in the same manner as in Example 1 except that the polymer composition was changed as shown in Table 1. Then, as in Example 1, the stretched film was produced and evaluated.

<比較例1,2>
ポリマー組成を表2に示すように変更したほかは、実施例1と同様にして共重合ポリエステル樹脂のペレットを得た。そして、上記実施例1と同様、延伸フィルムの作製及び評価試験を行なった。
<Comparative Examples 1 and 2>
Copolymerized polyester resin pellets were obtained in the same manner as in Example 1 except that the polymer composition was changed as shown in Table 2. Then, as in Example 1, the stretched film was produced and evaluated.

<比較例3>
ポリエステル樹脂の理論スケールを10kgとして、ジメチルテレフタレート8.77kg、エチレングリコール5.42kg、2,2’−メチレンビス[6−(2H−ベンゾトリアゾール−2−イル)−4−(2−ヒドロキシエチル)フェノール](大和化成社製:DAINSORB T−33)1.51kg、モノブチルスズ21.0g、3,9−ビス(2,6−ジ−t−ブチル−4−メチルフェノキシ)−2,4,8,10−テトラオキサ−3,9−ジホスファスピロ[5,5]ウンデカン(ADEKA社製:アデカスタブPEP−36)10gを、精留塔を備えた30Lオートクレーブに仕込み、窒素フローしつつ、大気圧下、内温250℃で昇温しながらエステル交換反応を行った。その後、1時間かけて133Pa以下まで減圧し、この間に内温を250℃から260℃に引き上げ、133Pa以下の高真空で所定の粘度まで重縮合反応を行い、口金から策状に水中に押出してペレタイザーでカットして、共重合ポリエステル樹脂のペレットを得た。得られた共重合ポリエステル樹脂について、相対粘度、ガラス転移点(Tg)、結晶化温度(Tc)及び融点(Tm)を測定した。
<Comparative Example 3>
The theoretical scale of the polyester resin is 10 kg, dimethyl terephthalate 8.77 kg, ethylene glycol 5.42 kg, 2,2′-methylenebis [6- (2H-benzotriazol-2-yl) -4- (2-hydroxyethyl) phenol ] (Daiwa Chemical Co., Ltd .: DAINSORB T-33) 1.51 kg, monobutyltin 21.0 g, 3,9-bis (2,6-di-t-butyl-4-methylphenoxy) -2,4,8, 10 g of 10-tetraoxa-3,9-diphosphaspiro [5,5] undecane (manufactured by ADEKA: ADK STAB PEP-36) was charged into a 30 L autoclave equipped with a rectifying column, and the internal temperature was maintained under atmospheric pressure while flowing nitrogen. The transesterification was carried out while raising the temperature at 250 ° C. Thereafter, the pressure is reduced to 133 Pa or less over 1 hour, and during this time, the internal temperature is increased from 250 ° C. to 260 ° C., and a polycondensation reaction is performed to a predetermined viscosity at a high vacuum of 133 Pa or less. Cut with a pelletizer to obtain copolymer polyester resin pellets. About the obtained copolyester resin, the relative viscosity, the glass transition point (Tg), the crystallization temperature (Tc), and the melting point (Tm) were measured.

以上で得られた共重合ポリエステル樹脂を、120℃で12時間以上真空乾燥を行った後、単軸押出成形機(東洋精機社製:ラボプラストミル)を用いて、成形温度280℃にて180μmの未延伸フィルムを成形し、さらに2軸延伸機(東洋精機:二軸延伸試験装置)を用いて20μmの延伸フィルムを得た。このフィルムの色調(YI)を色差計で測定し、390nmと380nmの紫外線の透過率を分光光度計で測定した。さらに、このフィルムに促進耐光試験機により所定の紫外線照射処理を行った後、色調(YI)を測定し、ΔYI(YI−YI)を求めた。 The copolyester resin obtained above is vacuum dried at 120 ° C. for 12 hours or more, and then 180 μm at a molding temperature of 280 ° C. using a single screw extrusion molding machine (Toyo Seiki Co., Ltd .: Labo Plast Mill). The unstretched film was molded, and a 20 μm stretched film was obtained using a biaxial stretching machine (Toyo Seiki: biaxial stretching test apparatus). The color tone (YI 0 ) of this film was measured with a color difference meter, and the transmittances of ultraviolet rays at 390 nm and 380 nm were measured with a spectrophotometer. Further, the film was subjected to a predetermined ultraviolet irradiation treatment with an accelerated light resistance tester, and then the color tone (YI) was measured to obtain ΔYI (YI−YI 0 ).

<比較例4>
ポリマー組成を表2に示すように変更し、エステル交換反応後、1時間かけて133Paまで減圧し、250℃、133Pa以下の高真空で重縮合反応を行なったほかは、比較例1と同様にして、共重合ポリエステル樹脂のペレットを得た。得られた共重合ポリエステル樹脂を80℃で24時間以上真空乾燥を行なった後、上記実施例1と同様、延伸フィルムの作製及び評価試験を行なった。
<Comparative example 4>
The polymer composition was changed as shown in Table 2, and after the transesterification reaction, the pressure was reduced to 133 Pa over 1 hour, and the polycondensation reaction was performed at 250 ° C. and a high vacuum of 133 Pa or less. Thus, pellets of a copolyester resin were obtained. The obtained copolyester resin was vacuum-dried at 80 ° C. for 24 hours or more, and then a stretched film was produced and evaluated as in Example 1.

<比較例5>
2−2−メチレンビス[6−(2H−ベンゾトリアゾール−2−イル)−4−(2−ヒドロキシエチル)フェノール]を用いずに作成したポリエチレンテレフタレート樹脂に、市販の紫外線吸収剤(チヌビン234:BASF社製)を樹脂全量の2質量%ブレンド溶融した。そして、上記実施例1と同様、樹脂及びフィルムの作製、評価試験を行なった。
<Comparative Example 5>
To a polyethylene terephthalate resin prepared without using 2--2-methylenebis [6- (2H-benzotriazol-2-yl) -4- (2-hydroxyethyl) phenol], a commercially available ultraviolet absorber (Tinuvin 234: BASF 2% by mass of the total resin was melted. And like the said Example 1, preparation of a resin and a film and the evaluation test were done.

上記実施例1〜4,比較例1〜5のポリマー組成及び各種評価結果についてまとめたものを、下記表1,2に示す。

Figure 2017052824
Tables 1 and 2 below summarize the polymer compositions and various evaluation results of Examples 1 to 4 and Comparative Examples 1 to 5.
Figure 2017052824

Figure 2017052824
Figure 2017052824

上記表1に示すように、テレフタル酸(及びイソフタル酸)、1,4−ブタンジオールとともに、2,2’−メチレンビス[6−(2H−ベンゾトリアゾール−2−イル)−4−(2−ヒドロキシエチル)フェノールを7.4〜17mol%共重合して得られた実施例1〜4の共重合ポリエステル樹脂を用いて得られたフィルムは、380nmの紫外光の透過率が0.1%以下、390nmの紫外光の透過率が7.2%以下であり、紫外線カット性能に優れていた。また、得られたフィルムのYI値も3.2以下で色調も良好であり、紫外光暴露試験後にもYI値は増加しておらず、黄変がほとんど生じなかった。   As shown in Table 1 above, together with terephthalic acid (and isophthalic acid) and 1,4-butanediol, 2,2′-methylenebis [6- (2H-benzotriazol-2-yl) -4- (2-hydroxy The film obtained using the copolymerized polyester resin of Examples 1 to 4 obtained by copolymerizing 7.4 to 17 mol% of ethyl) phenol has an ultraviolet light transmittance of 380 nm of 0.1% or less, The transmittance of ultraviolet light at 390 nm was 7.2% or less, and the ultraviolet ray cutting performance was excellent. Moreover, the YI value of the obtained film was 3.2 or less and the color tone was good, and the YI value did not increase even after the ultraviolet light exposure test, and yellowing hardly occurred.

これに対して、上記表2に示すように、ベンゾトリアゾール化合物の共重合割合を2.2mol%とした比較例1では、390nmの紫外光の透過率が35.2%となり、十分な紫外線カット性能が得られなかった。他方、ベンゾトリアゾール化合物の共重合割合を33mol%とした比較例2では、相対粘度を上げることができず、フィルムを作製することができなかった。また、グリコール成分をエチレングリコールとした比較例3,4の共重合ポリエステル樹脂は、フィルム作成後のYI値が6.2〜8であり、色調に劣るものであった。また、樹脂中にベンゾトリアゾール型の紫外線吸収剤を混練した比較例5のポリエステル樹脂組成物は、380nm、390nmの紫外光の透過率がそれぞれ34.7%、64.8%と紫外線カット性能に劣っており、紫外光暴露試験後のYI値の増加率が11となり、著しい黄変が生じてしまった。
On the other hand, as shown in Table 2 above, in Comparative Example 1 in which the copolymerization ratio of the benzotriazole compound was 2.2 mol%, the transmittance of ultraviolet light at 390 nm was 35.2%, and sufficient ultraviolet cut Performance was not obtained. On the other hand, in Comparative Example 2 in which the copolymerization ratio of the benzotriazole compound was 33 mol%, the relative viscosity could not be increased and a film could not be produced. Moreover, the copolymer polyester resin of Comparative Examples 3 and 4 in which the glycol component was ethylene glycol had a YI value of 6.2 to 8 after film formation, and was inferior in color tone. Further, the polyester resin composition of Comparative Example 5 in which a benzotriazole type ultraviolet absorber is kneaded in the resin has an ultraviolet light transmittance of 34.7% and 64.8% respectively at 380 nm and 390 nm. It was inferior, the increase rate of the YI value after the ultraviolet light exposure test was 11, and remarkable yellowing occurred.

Claims (2)

主たる酸成分として芳香族ジカルボン酸を含み、グリコール成分として(a)1,4−ブタンジオールを50〜95mol%、(b)下記一般式(1)で示されるベンゾトリアゾール基を有するジオール化合物を5〜20mol%含むことを特徴とする共重合ポリエステル樹脂。
Figure 2017052824
5 A diol compound having a benzotriazole group represented by the following general formula (1) containing 5 to 95 mol% of (a) 1,4-butanediol as a glycol component, containing an aromatic dicarboxylic acid as a main acid component Copolyester resin characterized by containing ~ 20 mol%.
Figure 2017052824
請求項1記載の共重合ポリエステル樹脂からなる厚さ10〜100μmの樹脂層を有することを特徴とする紫外線カットフィルム。
An ultraviolet cut film comprising a resin layer having a thickness of 10 to 100 μm made of the copolyester resin according to claim 1.
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018163334A1 (en) * 2017-03-08 2018-09-13 大和製罐株式会社 Copolyester resin and ultraviolet-shielding film
JP2019014780A (en) * 2017-07-04 2019-01-31 三菱ケミカル株式会社 Polyester resin composition
JP7487583B2 (en) 2020-06-29 2024-05-21 三菱ケミカル株式会社 Resin composition, molded body, laser welding kit, vehicle-mounted camera module, and method for manufacturing molded body

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50133296A (en) * 1974-04-09 1975-10-22
JPS62197418A (en) * 1986-02-26 1987-09-01 Dainippon Ink & Chem Inc Production of flame-retarding polyalkylene terephthalate
JPH09316060A (en) * 1996-03-28 1997-12-09 Otsuka Chem Co Ltd Bisbenzotriazolylphenol compound
JP2000123622A (en) * 1998-10-13 2000-04-28 Otsuka Chem Co Ltd Fluorescent lamp covering material
JP2002194071A (en) * 2000-12-22 2002-07-10 Toyobo Co Ltd Production method for polyester resin and polyester resin
JP2002308969A (en) * 2001-04-12 2002-10-23 Toray Ind Inc Process for producing polyester with high degree of polymerization
WO2014065380A1 (en) * 2012-10-26 2014-05-01 東洋鋼鈑株式会社 Resin film and resin film laminated ornamental panel

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50133296A (en) * 1974-04-09 1975-10-22
JPS62197418A (en) * 1986-02-26 1987-09-01 Dainippon Ink & Chem Inc Production of flame-retarding polyalkylene terephthalate
JPH09316060A (en) * 1996-03-28 1997-12-09 Otsuka Chem Co Ltd Bisbenzotriazolylphenol compound
JP2000123622A (en) * 1998-10-13 2000-04-28 Otsuka Chem Co Ltd Fluorescent lamp covering material
JP2002194071A (en) * 2000-12-22 2002-07-10 Toyobo Co Ltd Production method for polyester resin and polyester resin
JP2002308969A (en) * 2001-04-12 2002-10-23 Toray Ind Inc Process for producing polyester with high degree of polymerization
WO2014065380A1 (en) * 2012-10-26 2014-05-01 東洋鋼鈑株式会社 Resin film and resin film laminated ornamental panel

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018163334A1 (en) * 2017-03-08 2018-09-13 大和製罐株式会社 Copolyester resin and ultraviolet-shielding film
JP2019014780A (en) * 2017-07-04 2019-01-31 三菱ケミカル株式会社 Polyester resin composition
JP7487583B2 (en) 2020-06-29 2024-05-21 三菱ケミカル株式会社 Resin composition, molded body, laser welding kit, vehicle-mounted camera module, and method for manufacturing molded body

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