JP2001174626A - Near infrared ray absorption film - Google Patents
Near infrared ray absorption filmInfo
- Publication number
- JP2001174626A JP2001174626A JP35471799A JP35471799A JP2001174626A JP 2001174626 A JP2001174626 A JP 2001174626A JP 35471799 A JP35471799 A JP 35471799A JP 35471799 A JP35471799 A JP 35471799A JP 2001174626 A JP2001174626 A JP 2001174626A
- Authority
- JP
- Japan
- Prior art keywords
- infrared absorbing
- film
- infrared ray
- near infrared
- compound
- 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.)
- Granted
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
- C09B57/00—Other synthetic dyes of known constitution
- C09B57/008—Triarylamine dyes containing no other chromophores
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Optical Filters (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は近赤外線吸収フィル
ムに係り、特に、耐熱、耐湿、耐紫外線性等に優れ、プ
ラズマディスプレイ（ＰＤＰ）の前面に配置される近赤
外線吸収フィルムや、自動車のウィンドウガラスに貼着
される熱線吸収フィルムとして好適な高耐久性近赤外線
吸収フィルムに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a near-infrared absorbing film, and more particularly to a near-infrared absorbing film which is excellent in heat resistance, moisture resistance, ultraviolet light resistance, etc., is disposed on the front surface of a plasma display (PDP), and a window of an automobile. The present invention relates to a highly durable near-infrared absorbing film suitable as a heat ray absorbing film adhered to glass.
【０００２】[0002]
【従来の技術】ＰＤＰの前面に配置される電磁波シール
ド性光透過窓材のＰＤＰ側は、一般に近赤外線吸収フィ
ルムが貼着されている。また、自動車のウィンドウガラ
スにも熱線吸収のために近赤外線吸収フィルムが貼着さ
れる。この近赤外線吸収フィルムや、熱線吸収フィル
タ、ビデオカメラ視感度補正用フィルタ等に用いられる
近赤外線吸収フィルムには、近赤外線の選択的吸収性能
が高く、近赤外線を高度に遮断し、一方で可視光領域の
透過率は高く、無色で透明性に優れることが望まれる。2. Description of the Related Art A near-infrared absorbing film is generally adhered to the PDP side of an electromagnetic wave shielding light transmitting window material disposed on the front surface of a PDP. A near-infrared absorbing film is also attached to a window glass of an automobile to absorb heat rays. This near-infrared absorbing film, a near-infrared absorbing film used for a heat ray absorbing filter, a filter for correcting the visibility of a video camera, etc. has a high selective absorbing performance of near-infrared rays, and highly blocks near-infrared rays, while at the same time it is visible. It is desired that the light region has high transmittance, is colorless, and has excellent transparency.
【０００３】従来、近赤外線吸収フィルムとしては、ベ
ースポリマー中に、フタロシアニン系、ニッケル錯体
系、アゾ化合物、ポリメチン系、ジフェニルメタン系、
トリフェニルメタン系、又はキノン系化合物よりなる近
赤外線吸収剤を分散させた近赤外線吸収層を透明基材フ
ィルム表面に形成したものが提供されている。また、特
開平１１−９５０２６号公報には、近赤外線吸収効率及
び可視光透過率を高めるために、これらの近赤外線吸収
剤のうちの２種以上を近赤外線吸収層中に含有させた近
赤外線吸収フィルムが提案されている。Conventionally, as a near-infrared absorbing film, phthalocyanine, nickel complex, azo compound, polymethine, diphenylmethane,
What provided the near-infrared absorption layer which disperse | distributed the near-infrared absorber which consists of a triphenylmethane type or quinone type compound on the surface of the transparent base material film is provided. Japanese Patent Application Laid-Open No. 11-95026 discloses a near-infrared absorbing layer in which two or more of these near-infrared absorbing agents are contained in a near-infrared absorbing layer in order to enhance near-infrared absorbing efficiency and visible light transmittance. Absorbing films have been proposed.
【０００４】[0004]
【発明が解決しようとする課題】近赤外線吸収フィルム
にあっては、更に、その使用環境上、耐熱性、耐湿性、
耐紫外線性等に優れることが要求される。特に、ＰＤＰ
の前面に配置される近赤外線吸収フィルムでは、ＰＤＰ
からの発熱で長時間高温条件に晒されることから、耐熱
性に優れることが要求される。また、自動車のウィンド
ウガラスに貼着される近赤外線吸収フィルムについても
耐熱性が要求される。The near-infrared absorbing film further has heat resistance, moisture resistance,
It is required to have excellent ultraviolet resistance and the like. In particular, PDP
Near infrared absorbing film placed in front of
Since it is exposed to high-temperature conditions for a long time due to heat generated from it, it is required to have excellent heat resistance. Further, heat resistance is also required for a near-infrared absorbing film to be attached to a window glass of an automobile.
【０００５】しかしながら、従来の近赤外線吸収フィル
ムでは、耐熱性等において十分に満足し得る性能が得ら
れておらず、高温条件での使用により、近赤外線吸収性
能が低下するため、その改善が望まれている。特に、近
年の電磁波シールド性光透過窓材の薄肉化に伴い、電磁
波シールド性光透過窓材の近赤外線吸収フィルムとＰＤ
Ｐとは近接して配置されるようになってきていることか
ら、近赤外線吸収フィルムにあってはより一層の耐熱性
の向上が望まれている。However, the conventional near-infrared absorbing film does not provide satisfactory performance in terms of heat resistance and the like, and the near-infrared absorbing performance is reduced by use under high-temperature conditions. It is rare. In particular, with the recent reduction in the thickness of the electromagnetic wave shielding light transmitting window material, the near infrared absorbing film of the electromagnetic wave shielding light transmitting window material and the PD
Since P is being arranged in close proximity, further improvement in heat resistance is desired for near-infrared absorbing films.
【０００６】本発明は上記従来の実情に鑑みてなされた
ものであって、耐熱、耐湿、耐紫外線性に優れ、ＰＤＰ
の前面や自動車のウィンドウガラスに設けられる近赤外
線吸収フィルムとして好適な高耐久性近赤外線吸収フィ
ルムを提供することを目的とする。The present invention has been made in view of the above-mentioned conventional circumstances, and is excellent in heat resistance, moisture resistance and ultraviolet light resistance, and has a PDP.
It is an object of the present invention to provide a highly durable near-infrared absorbing film suitable as a near-infrared absorbing film provided on the front of a vehicle or a window glass of an automobile.
【０００７】[0007]
【課題を解決するための手段】本発明の近赤外線吸収フ
ィルムは、透明基材フィルムの表面に近赤外線吸収層が
形成されてなる近赤外線吸収フィルムにおいて、該近赤
外線吸収層にジイモニウム系化合物よりなる近赤外線吸
収剤と、下記構造（Ａ）を有する銅錯体及び／又は下記
構造（Ｂ）を有する銅化合物とが含有されていることを
特徴とする近赤外線吸収フィルム。The near-infrared absorbing film of the present invention is a near-infrared absorbing film comprising a transparent substrate film and a near-infrared absorbing layer formed on the surface thereof. A near-infrared absorbing film, and a copper complex having the following structure (A) and / or a copper compound having the following structure (B).
【０００８】[0008]
【化２】 Embedded image
【０００９】本発明に従って、近赤外線吸収層中の近赤
外線吸収剤としてジイモニウム系化合物を用いると共
に、近赤外線吸収層中に酸化防止剤として上記特定の銅
錯体及び／又は銅化合物を共存させることにより、近赤
外線吸収フィルムの耐熱性、耐湿性、耐紫外線性が著し
く改善され、例えば高温環境下での使用においても長期
に亘り近赤外線吸収性能を維持し得る近赤外線吸収フィ
ルムが提供される。According to the present invention, a diimmonium compound is used as a near-infrared absorbing agent in a near-infrared absorbing layer, and the above specific copper complex and / or copper compound is coexisted as an antioxidant in the near-infrared absorbing layer. The present invention provides a near-infrared absorbing film in which the heat resistance, moisture resistance, and ultraviolet resistance of the near-infrared absorbing film are remarkably improved, and the near-infrared absorbing film can maintain the near-infrared absorbing performance for a long period of time even when used in a high-temperature environment.
【００１０】本発明において、近赤外線吸収層はベース
ポリマー中にジイモニウム系化合物と銅錯体及び／又は
銅化合物を分散させた層であり、この近赤外線吸収層中
のジイモニウム系化合物の含有割合はベースポリマー１
００重量部に対して０．０１〜１００重量部、銅錯体及
び／又は銅化合物の含有割合はジイモニウム系化合物１
００重量部に対して０．０１〜１００重量部であること
が好ましい。In the present invention, the near-infrared absorbing layer is a layer in which a diimmonium-based compound and a copper complex and / or a copper compound are dispersed in a base polymer. Polymer 1
The content of the copper complex and / or the copper compound is 0.01 to 100 parts by weight with respect to 00 parts by weight.
It is preferably 0.01 to 100 parts by weight based on 00 parts by weight.
【００１１】また、ベースポリマーとしてはアクリル樹
脂又はポリエステル樹脂が好ましく、透明基材フィルム
としてはポリエステルフィルムが好ましい。Further, an acrylic resin or a polyester resin is preferable as the base polymer, and a polyester film is preferable as the transparent base film.
【００１２】[0012]
【発明の実施の形態】以下に図面を参照して本発明の近
赤外線吸収フィルムの実施の形態を詳細に説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the near-infrared absorbing film of the present invention will be described below in detail with reference to the drawings.
【００１３】図１は本発明の近赤外線吸収フィルムの実
施の形態を示す断面図である。FIG. 1 is a sectional view showing an embodiment of the near-infrared absorbing film of the present invention.
【００１４】この近赤外線吸収フィルム１は透明基材フ
ィルム２の表面に、ジイモニウム系化合物と特定の銅錯
体及び／又は銅化合物を含む近赤外線吸収層３が形成さ
れたものであり、この近赤外線吸収層３はベースポリマ
ーにジイモニウム系化合物と銅錯体及び／又は銅化合物
とを分散させ、適当な溶剤で希釈して濃度調整したコー
ティング液を透明基材フィルム１の表面にコーティング
し、コーティング膜を乾燥させることにより形成するこ
とができる。The near-infrared absorbing film 1 has a transparent substrate film 2 on the surface of which a near-infrared absorbing layer 3 containing a diimonium compound and a specific copper complex and / or copper compound is formed. The absorption layer 3 is obtained by dispersing a diimmonium compound and a copper complex and / or a copper compound in a base polymer, diluting the dilunium compound with an appropriate solvent and adjusting the concentration, and coating the coating solution on the surface of the transparent substrate film 1. It can be formed by drying.
【００１５】本発明おいて、近赤外線吸収剤として用い
るジイモニウム系化合物としては、下記一般式(I)又は
(II)で表されるものが挙げられる。In the present invention, the diimonium-based compound used as a near-infrared absorbing agent includes the following general formula (I) or
And those represented by (II).
【００１６】[0016]
【化３】 Embedded image
【００１７】なお、上記(I)，(II)式中、Ｒ１，Ｒ２，
Ｒ３，Ｒ４は、水素、ハロゲン原子、アルキル基、アリ
ール基又は芳香族系の官能基を表し、Ｘ−は１価の負イ
オン、Ｙ２−は２価の負イオンを表す。In the above formulas (I) and (II), R 1 , R 2 ,
R 3 and R 4 represent a hydrogen, a halogen atom, an alkyl group, an aryl group or an aromatic functional group, X − represents a monovalent negative ion, and Y 2 − represents a divalent negative ion.
【００１８】Ｘ−としてはＩ−，Ｃｌ−，Ｂｒ−，Ｆ−
等のハロゲンイオン、ＮＯ３ −，ＢＦ４ −，ＰＦ６ −，
ＣｌＯ４ −，ＳｂＦ６ −等の無機酸イオン、ＣＨ３ＣＯ
Ｏ−，ＣＦ３ＣＯＯ−、安息香酸イオン等の有機カルボ
ン酸イオン、ＣＨ３ＳＯ３ −，ＣＦ３ＳＯ３ −，ベンゼ
ンスルホン酸イオン、ナフタレンスルホン酸イオン等の
有機スルホン酸イオン等が挙げられる。また、Ｙ２−と
してはスルホン酸基を２個有する芳香族ジスルホン酸イ
オンが好ましく、例えばナフタレン−１，５−ジスルホ
ン酸、Ｒ酸、Ｇ酸、Ｈ酸、ベンゾイルＨ酸（Ｈ酸のアミ
ノ基にベンゾイル基が結合したもの）、ｐ−クロルベン
ゾイルＨ酸、ｐ−トルエンスルホニルＨ酸、クロルＨ酸
（Ｈ酸のアミノ基が塩素原子に置換したもの）、クロル
アセチルＨ酸、メタニルγ酸、６−スルホナフチル−γ
酸、Ｃ酸、ε酸、ｐ−トルエンスルホニルＲ酸、ナフタ
リン−１，６−ジスルホン酸、１−ナフトール−４，８
−ジスルホン酸等のナフタレンジスルホン酸誘導体、カ
ルボニルＪ酸、４，４’−ジアミノスチルベン−２，
２’−ジスルホン酸、ジＪ酸、ナフタル酸、ナフタリン
−２，３−ジカルボン酸、ジフェン酸、スチルベン−
４，４’−ジカルボン酸、６−スルホ−２−オキシ−３
−ナフトエ酸、アントラキノン−１，８−ジスルホン
酸、１，６−ジアミノアントラキノン−２，７−ジスル
ホン酸、２−（４−スルホフェニル）−６−アミノベン
ゾトリアゾール−５−スルホン酸、６−（３−メチル−
５−ピラゾロニル）−ナフタレン−１，３−ジスルホン
酸、１−ナフトール−６−（４−アミノ−３−スルホ）
アニリノ−３−スルホン酸等のイオンが挙げられる。よ
り好ましい２価の有機負イオンはナフタレンジスルホン
酸イオンであり、さらに好ましい２価の有機負イオンと
しては、例えば下記一般式(III)で表されるイオンが挙
げられる。X − is I − , Cl − , Br − , F −
Halogen ions such as NO 3 − , BF 4 − , PF 6 − ,
Inorganic acid ions such as ClO 4 − and SbF 6 − , CH 3 CO
Organic carboxylate ions such as O − , CF 3 COO − and benzoate ions; and organic sulfonic acid ions such as CH 3 SO 3 − , CF 3 SO 3 − , benzenesulfonate ions and naphthalenesulfonate ions. As Y 2− , an aromatic disulfonic acid ion having two sulfonic acid groups is preferable. For example, naphthalene-1,5-disulfonic acid, R acid, G acid, H acid, benzoyl H acid (amino group of H acid) Benzoyl group), p-chlorobenzoyl H acid, p-toluenesulfonyl H acid, chloro H acid (having the amino group of H acid replaced with a chlorine atom), chloroacetyl H acid, methenyl gamma acid, 6-sulfonaphthyl-γ
Acid, C acid, ε acid, p-toluenesulfonyl R acid, naphthalene-1,6-disulfonic acid, 1-naphthol-4,8
Naphthalenedisulfonic acid derivatives such as -disulfonic acid, carbonyl J acid, 4,4'-diaminostilbene-2,
2'-disulfonic acid, diJ acid, naphthalic acid, naphthalene-2,3-dicarboxylic acid, diphenic acid, stilbene-
4,4'-dicarboxylic acid, 6-sulfo-2-oxy-3
-Naphthoic acid, anthraquinone-1,8-disulfonic acid, 1,6-diaminoanthraquinone-2,7-disulfonic acid, 2- (4-sulfophenyl) -6-aminobenzotriazole-5-sulfonic acid, 6- ( 3-methyl-
5-pyrazolonyl) -naphthalene-1,3-disulfonic acid, 1-naphthol-6- (4-amino-3-sulfo)
Ions such as anilino-3-sulfonic acid; A more preferred divalent organic anion is a naphthalenedisulfonic acid ion, and a more preferred divalent organic anion is, for example, an ion represented by the following general formula (III).
【００１９】[0019]
【化４】 Embedded image
【００２０】上記(III)式中、Ｒ５，Ｒ６は、水素原
子、ハロゲン原子、低級アルキル基、水酸基、アルキル
アミノ基、アミノ基、−ＮＨＣＯＲ７、−ＮＨＳＯ２Ｒ
７、−ＯＳＯ２Ｒ７（ここで、Ｒ７は、置換もしくは未
置換のアリール基又は置換もしくは未置換のアルキル基
を表す）又はアセチル基を表す。In the above formula (III), R 5 and R 6 represent a hydrogen atom, a halogen atom, a lower alkyl group, a hydroxyl group, an alkylamino group, an amino group, —NHCOR 7 , and —NHSO 2 R
7, (wherein, R 7 represents a substituted or unsubstituted aryl group or a substituted or unsubstituted alkyl group) -OSO 2 R 7 or an acetyl group.
【００２１】このようなジイモニウム系化合物の好適な
ものとしては、下記一般式(IV)で表されるものが挙げら
れる。Preferred examples of such a diimonium compound include those represented by the following general formula (IV).
【００２２】[0022]
【化５】 Embedded image
【００２３】上記(IV)式中、Ｒは炭素数１〜８のアルキ
ル基、好ましくはｎ−ブチル基であり、Ｘ−としては好
ましくはＢＦ４ −，ＰＦ６ −，ＣｌＯ４ −，ＳｂＦ６ −
が挙げられる。[0023] In the above formula (IV), R represents an alkyl group having 1 to 8 carbon atoms, preferably n- butyl group, X - as preferably BF 4 -, PF 6 -, ClO 4 -, SbF 6 −
Is mentioned.
【００２４】具体的なジイモニウム系化合物としては、
下記構造式(V)で表されるものが挙げられる。Specific diimonium compounds include:
Examples include those represented by the following structural formula (V).
【００２５】[0025]
【化６】 Embedded image
【００２６】また、前記構造（Ａ）を有する銅錯体とし
ては、１，２−ベンゼンチオール銅錯体系化合物が挙げ
られ、具体的には下記構造式(VI)で表されるビス（４−
ｔ−ブチル−１，２−ジチオフェノレート）銅−テトラ
−ｎ−ブチルアンモニウムや下記構造式（VII）で表さ
れる４−モルホリノスルホニル−１，２−ベンゼンジチ
オール銅錯体が挙げられる。Examples of the copper complex having the structure (A) include 1,2-benzenethiol copper complex-based compounds, and specifically, bis (4-) represented by the following structural formula (VI):
(t-butyl-1,2-dithiophenolate) copper-tetra-n-butylammonium and 4-morpholinosulfonyl-1,2-benzenedithiol copper complex represented by the following structural formula (VII).
【００２７】[0027]
【化７】 Embedded image
【００２８】また、前記構造（Ｂ）を有する銅化合物と
しては、下記構造式(VIII)で表されるジメチルジチオカ
ルバミン酸銅が挙げられる。The copper compound having the structure (B) includes copper dimethyldithiocarbamate represented by the following structural formula (VIII).
【００２９】[0029]
【化８】 Embedded image
【００３０】これらジイモニウム系化合物及び銅錯体及
び／又は銅化合物は、いずれも市販品を好適に用いるこ
とができる。As these diimonium compounds and copper complexes and / or copper compounds, commercially available products can be suitably used.
【００３１】本発明において、近赤外線吸収層中のジイ
モニウム系化合物の含有量は、少な過ぎると近赤外線吸
収効果が不足し、多過ぎると可視光透過性が悪くなるこ
とから、ジイモニウム系化合物はベースポリマー１００
重量部に対して０．００１〜１００重量部、特に０．０
１〜５０重量部、とりわけ０．１〜１０重量部とするの
が好ましい。In the present invention, if the content of the diimmonium compound in the near infrared absorbing layer is too small, the effect of absorbing near infrared light is insufficient, and if it is too large, the visible light transmittance is deteriorated. Polymer 100
0.001 to 100 parts by weight, particularly 0.0
The amount is preferably 1 to 50 parts by weight, particularly preferably 0.1 to 10 parts by weight.
【００３２】また、近赤外線吸収層中の銅錯体及び／又
は銅化合物は、少な過ぎると耐熱性、耐湿性等の耐久性
向上効果が不足し、多過ぎると近赤外線吸収層が着色し
て近赤外線吸収フィルムの外観が悪くなるため、銅錯体
及び／又は銅化合物はジイモニウム系化合物１００重量
部に対して０．０１〜１００重量部、特に０．１〜５０
重量部、とりわけ０．５〜３０重量部とするのが好まし
い。If the amount of the copper complex and / or copper compound in the near-infrared absorbing layer is too small, the effect of improving durability such as heat resistance and moisture resistance is insufficient. Since the appearance of the infrared absorbing film is deteriorated, the copper complex and / or the copper compound is used in an amount of 0.01 to 100 parts by weight, particularly 0.1 to 50 parts by weight, based on 100 parts by weight of the diimonium-based compound.
It is preferably used in an amount of 0.5 to 30 parts by weight.
【００３３】なお、近赤外線吸収層のベースポリマーと
しては、ポリエステル樹脂、アクリル樹脂、メタクリル
樹脂、ウレタン樹脂、シリコーン樹脂、フェノール樹
脂、（メタ）アクリル酸エステルの単独重合体或いは共
重合体等、好ましくはアクリル樹脂又はポリエステル樹
脂が用いられる。As the base polymer of the near-infrared absorbing layer, a homopolymer or a copolymer of polyester resin, acrylic resin, methacrylic resin, urethane resin, silicone resin, phenolic resin, (meth) acrylate, etc. is preferable. Is an acrylic resin or a polyester resin.
【００３４】一方、透明基材フィルムとしては、特に限
定されるものではないが、ポリエステル系、アクリル
系、セルロース系、ポリエチレン系、ポリプロピレン
系、ポリオレフィン系、ポリ塩化ビニル系、ポリカーボ
ネート系、フェノール系、ウレタン系樹脂フィルムなど
が用いられ、特に透明性、耐環境性などの観点から、ポ
リエステル系樹脂フィルムが好ましく用いられる。On the other hand, the transparent substrate film is not particularly limited, but may be polyester-based, acrylic-based, cellulose-based, polyethylene-based, polypropylene-based, polyolefin-based, polyvinyl chloride-based, polycarbonate-based, phenol-based, or the like. A urethane-based resin film or the like is used, and a polyester-based resin film is particularly preferably used from the viewpoint of transparency and environmental resistance.
【００３５】透明基材フィルムとしては、機械的強度、
薄肉化の面から、膜厚１０μｍ〜１ｍｍ程度のものを用
いるのが好ましい。As the transparent substrate film, mechanical strength,
From the viewpoint of thinning, it is preferable to use a film having a film thickness of about 10 μm to 1 mm.
【００３６】また、近赤外線吸収層は、近赤外線吸収
性、可視光透過性の面から、厚さ０．５〜５０μｍ程度
に形成されることが好ましい。The near-infrared absorbing layer is preferably formed to have a thickness of about 0.5 to 50 μm from the viewpoint of absorbing near-infrared rays and transmitting visible light.
【００３７】なお、近赤外線吸収層には、その近赤外線
吸収性能や可視光透過性、耐久性等を損なわない範囲に
おいて、ジイモニウム系化合物並びに前記銅錯体及び／
又は銅化合物以外の添加剤を配合してもよく、例えば、
ジイモニウム系化合物以外の近赤外線吸収剤、具体的に
はフタロシアニン系、ニッケル錯体系、アゾ系、ポリメ
チン系、ジフェニルメタン系、トリフェニルメタン系、
キノン系等の近赤外線吸収剤や、前記銅錯体及び／又は
銅化合物以外の酸化防止剤、具体的にはフェノール系、
アミン系、ヒンダードフェノール系、ヒンダードアミン
系、硫黄系、リン酸系、亜リン酸系、金属錯体系の酸化
防止剤を配合しても良く、また紫外線に対する耐久性向
上の観点から紫外線吸収剤を配合しても良い。更に、フ
ィルムの外観の改良のための着色剤、顔料、色素等を配
合しても良い。The near-infrared absorbing layer has a diimmonium compound and the copper complex and / or the copper complex as long as the near-infrared absorbing performance, visible light transmittance and durability are not impaired.
Or may be blended with additives other than copper compounds, for example,
Near infrared absorbing agents other than diimonium compounds, specifically, phthalocyanine, nickel complex, azo, polymethine, diphenylmethane, triphenylmethane,
Near infrared absorbers such as quinones, and antioxidants other than the copper complex and / or copper compound, specifically, phenolic,
Amine-based, hindered phenol-based, hindered amine-based, sulfur-based, phosphoric-acid-based, phosphorous-based, and metal complex-based antioxidants may be blended, and an ultraviolet absorber is used from the viewpoint of improving durability against ultraviolet rays. You may mix. Further, a colorant, a pigment, a dye, and the like for improving the appearance of the film may be blended.
【００３８】[0038]
【実施例】以下に実施例及び比較例を挙げて本発明をよ
り具体的に説明する。The present invention will be described more specifically below with reference to examples and comparative examples.
【００３９】実施例１〜８、比較例１，２ 表１に示す配合の近赤外線吸収層形成材料をジクロロメ
タン１８．５ｇ、テトラヒドロフラン３７ｇ及びトルエ
ン３７ｇの混合溶剤に溶解してコーティング液を調製
し、このコーティング液を幅２００ｍｍ、厚さ１００μ
ｍのポリエチレンフィルムにコーティングし、室温で乾
燥して厚さ５μｍの近赤外線吸収層を形成した。Examples 1 to 8 and Comparative Examples 1 and 2 A coating solution was prepared by dissolving a material for forming a near-infrared absorbing layer having the composition shown in Table 1 in a mixed solvent of 18.5 g of dichloromethane, 37 g of tetrahydrofuran and 37 g of toluene. This coating solution is 200mm wide and 100μ thick.
m, and dried at room temperature to form a near-infrared absorbing layer having a thickness of 5 μm.
【００４０】この近赤外線吸収フィルムを８０℃で５０
０時間保持し、前後の吸光度から、下記式により１０９
０ｎｍ吸光度残存率を算出し、結果を表１に示した。The near-infrared absorbing film was treated at 80 ° C. for 50 hours.
After holding for 0 hour, the absorbance before and after was calculated by the following formula.
The residual ratio of 0 nm absorbance was calculated, and the results are shown in Table 1.
【００４１】[0041]
【数１】 (Equation 1)
【００４２】[0042]
【表１】 [Table 1]
【００４３】表１より明らかなように、近赤外線吸収層
にジイモニウム系化合物と銅ジチオレン系錯体を配合し
た本発明の近赤外線吸収フィルムであれば、８５℃で５
００時間保持した後も１０９０ｎｍ吸光度残存率が０．
８以上の好結果が得られており、耐熱性に優れることが
わかる。As is evident from Table 1, the near-infrared absorbing film of the present invention in which the diimmonium compound and the copper dithiolene complex were blended in the near-infrared absorbing layer was 5 ° C at 85 ° C.
Even after holding for 00 hours, the residual ratio of absorbance at 1090 nm is 0.1%.
Good results of 8 or more were obtained, indicating that the heat resistance was excellent.
【００４４】[0044]
【発明の効果】以上詳述した通り、本発明によれば、耐
熱性、耐湿性、耐紫外線性等に著しく優れ、長期に亘り
近赤外線吸収能の低下の問題のない高耐久性の近赤外線
吸収フィルムが提供される。As described above in detail, according to the present invention, a highly durable near-infrared ray which is remarkably excellent in heat resistance, moisture resistance, ultraviolet ray resistance and the like and has no problem of a decrease in near-infrared ray absorption capacity for a long period of time. An absorbent film is provided.
【００４５】このような本発明の近赤外線吸収フィルム
は、特に、長時間、高熱環境下に晒されるＰＤＰの前面
に配置される近赤外線吸収フィルムとして好適である。Such a near-infrared absorbing film of the present invention is particularly suitable as a near-infrared absorbing film disposed on the front surface of a PDP exposed to a high-temperature environment for a long time.
【図１】本発明の近赤外線吸収フィルムの実施の形態を
示す断面図である。FIG. 1 is a sectional view showing an embodiment of a near-infrared absorbing film of the present invention.
１ 近赤外線吸収フィルム ２ 透明基材フィルム ３ 近赤外線吸収層 DESCRIPTION OF SYMBOLS 1 Near-infrared absorption film 2 Transparent base film 3 Near-infrared absorption layer
フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ テーマコート゛(参考） Ｃ０９Ｋ 3/00 １０５ Ｃ０９Ｋ 3/00 １０５ // Ｃ０９Ｂ 57/10 Ｃ０９Ｂ 57/10 (72)発明者 小坪 秀史 東京都小平市小川東町３−１−１ Ｆターム(参考） 2H048 CA04 CA12 CA17 CA26 4F071 AA02 AA15 AA31 AA43 AC12 AC13 AE09 AE22 AH07 AH16 BA02 BB02 BC01 4J002 AA011 BB031 BB121 BG001 CF001 CG001 EN006 EN056 EN137 EV147 EV157 EV307 EZ007 FD206 FD207 Continued on the front page (51) Int.Cl. 7 Identification symbol FI Theme coat II (Reference) C09K 3/00 105 C09K 3/00 105 // C09B 57/10 C09B 57/10 (72) Inventor Hidefumi Kotsubo Kodaira, Tokyo 3-1-1, Ogawa-Higashicho, F-term (Reference) 2H048 CA04 CA12 CA17 CA26 4F071 AA02 AA15 AA31 AA43 AC12 AC13 AE09 AE22 AH07 AH16 BA02 BB02 BC01 4J002 AA011 BB031 BB121 BG001 CF001 CG001 EN006 EVEV 307 EV 147 EV147
Claims (6)
層が形成されてなる近赤外線吸収フィルムにおいて、 該近赤外線吸収層にジイモニウム系化合物よりなる近赤
外線吸収剤と、下記構造（Ａ）を有する銅錯体及び／又
は下記構造（Ｂ）を有する銅化合物とが含有されている
ことを特徴とする近赤外線吸収フィルム。 【化１】 1. A near-infrared absorbing film comprising a transparent substrate film having a near-infrared absorbing layer formed on the surface thereof, wherein the near-infrared absorbing layer comprises a near-infrared absorbing agent comprising a diimonium-based compound, and the following structure (A): A near-infrared absorbing film characterized by containing a copper complex and / or a copper compound having the following structure (B). Embedded image
ベースポリマー中に該ジイモニウム系化合物と、該銅錯
体及び／又は銅化合物とを分散させた層であることを特
徴とする近赤外線吸収フィルム。2. The near-infrared absorbing layer according to claim 1, wherein the near-infrared absorbing layer is a layer in which the diimmonium compound and the copper complex and / or copper compound are dispersed in a base polymer. the film.
ジイモニウム系化合物の含有割合がベースポリマー１０
０重量部に対して０．０１〜１００重量部であることを
特徴とする近赤外線吸収フィルム。3. The near-infrared absorbing layer according to claim 2, wherein the content ratio of the diimonium-based compound in the near-infrared absorbing layer is 10%.
A near-infrared absorbing film characterized by being 0.01 to 100 parts by weight relative to 0 parts by weight.
て、近赤外線吸収層中の銅錯体及び／又は銅化合物の含
有割合がジイモニウム系化合物１００重量部に対して
０．０１〜１００重量部であることを特徴とする近赤外
線吸収フィルム。4. The near-infrared absorbing layer according to claim 1, wherein the content of the copper complex and / or copper compound in the near-infrared absorbing layer is 0.01 to 100 parts by weight based on 100 parts by weight of the diimonium-based compound. A near-infrared absorbing film, characterized in that:
て、ベースポリマーがアクリル樹脂又はポリエステル樹
脂であることを特徴とする近赤外線吸収フィルム。5. The near-infrared absorbing film according to claim 2, wherein the base polymer is an acrylic resin or a polyester resin.
て、透明基材フィルムがポリエステルフィルムであるこ
とを特徴とする近赤外線吸収フィルム。6. The near-infrared absorbing film according to claim 1, wherein the transparent base film is a polyester film.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP35471799A JP4395947B2 (en) | 1999-12-14 | 1999-12-14 | Near infrared absorption film |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP35471799A JP4395947B2 (en) | 1999-12-14 | 1999-12-14 | Near infrared absorption film |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2001174626A true JP2001174626A (en) | 2001-06-29 |
| JP4395947B2 JP4395947B2 (en) | 2010-01-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP35471799A Expired - Fee Related JP4395947B2 (en) | 1999-12-14 | 1999-12-14 | Near infrared absorption film |
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