JPH0453892B2 - - Google Patents

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Publication number
JPH0453892B2
JPH0453892B2 JP60171792A JP17179285A JPH0453892B2 JP H0453892 B2 JPH0453892 B2 JP H0453892B2 JP 60171792 A JP60171792 A JP 60171792A JP 17179285 A JP17179285 A JP 17179285A JP H0453892 B2 JPH0453892 B2 JP H0453892B2
Authority
JP
Japan
Prior art keywords
formula
infrared absorber
additives
infrared
examples
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.)
Expired - Lifetime
Application number
JP60171792A
Other languages
Japanese (ja)
Other versions
JPS6232132A (en
Inventor
Giichi Sato
Shigeto Shindo
Tatsuya Numa
Mitsukuni Sumya
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.)
Nippon Kayaku Co Ltd
Original Assignee
Nippon Kayaku 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 Nippon Kayaku Co Ltd filed Critical Nippon Kayaku Co Ltd
Priority to JP60171792A priority Critical patent/JPS6232132A/en
Publication of JPS6232132A publication Critical patent/JPS6232132A/en
Publication of JPH0453892B2 publication Critical patent/JPH0453892B2/ja
Granted legal-status Critical Current

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  • Coating Of Shaped Articles Made Of Macromolecular Substances (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Optical Record Carriers And Manufacture Thereof (AREA)

Description

【発明の詳細な説明】[Detailed description of the invention]

「産業上の利用分野」 本発明は赤外線吸収剤の耐光堅牢度向上法に関
する。更に詳しくは特定な化合物を共存せしめる
ことによる特定の赤外線吸収剤の耐光堅牢度向上
法に関する。 「従来の技術」 近年赤外線吸収剤は広範な分野に利用されるよ
うになつた。例えば光学的記録媒体の分野におい
ては、赤外線吸収剤を含む層をアクリル樹脂板、
ポリカーボネート樹脂板等の基板上に形成せしめ
これに適当な光、例えばレーザー光を照射するこ
とにより情報を記録することが行われている。又
赤外線吸収剤をバインダーと有機溶媒との混合物
に混合し例えば透明なアクリル樹脂板に塗布する
ことにより赤外領域の光線に対する光遮断材(フ
イルター)が製造されている。更に赤外線吸収剤
をメチルメタクリレート樹脂のような樹脂に練り
込み成形することにより赤外領域の光が遮断され
たメガネ等として用いることも、行われている。 式 (式(1)においてRはアルキル基を、R′は炭素
総数2〜6のアルキルアミノ基又はハロゲン原子
で置換されていてもよいフエニル基を、Xは陰イ
オンを表す) で表される赤外線吸収剤も前記したような用途に
使用されている。 「発明が解決しようとする問題点」 前記式(1)で表される赤外線吸収剤はすぐれた赤
外線吸収能を有するがその耐光堅牢度が十分でな
いという欠点があり、そのため高い耐光堅牢度を
有するような用途、目的の為にはその使用が制限
されている。 「問題点を解決する為の手段」 本発明者らは前記したような時題点を解決すべ
く鋭意研究を重ねた結果本発明に至つたものであ
り、即ち本発明は式 (式(1)においてRはアルキル基を、R′は炭素
総数2〜6のアルキルアミノ基又はハロゲン原子
で置換されていてもよいフエニル基を、Xは陰イ
オンを表す) で表される赤外線吸収剤に下記(2),(3),(4)の化合
(式(2),(3)及び(4)においてRは前記と同じ意味
を、X′は陰イオンを表す。又式(3)においてAは
置換していてもよいフエニル基又はナフタレン基
を表す)又はアセチルアセトンのNi(),Cu
(),Mn()若しくはCo()キレート化物か
ら選ばれる化合物の1種又は2種以上を併用する
ことを特徴とする式(1)で表される赤外線吸収剤の
耐光堅牢度向上法を提供する。 本発明において式(1)で表される赤外線吸収剤及
び式(2),(3),(4)及び前記アセチルアセトン金属キ
レート化合物(以後これらを添加剤という)の具
体的な例としては次のような化合物が挙げられ
る。 式(1)の赤外線吸収剤の例(R,R′,X-は各各
式(1)におけるものである。)
"Industrial Application Field" The present invention relates to a method for improving the light fastness of an infrared absorbent. More specifically, the present invention relates to a method for improving the light fastness of a specific infrared absorber by coexisting a specific compound. "Prior Art" In recent years, infrared absorbers have come to be used in a wide range of fields. For example, in the field of optical recording media, a layer containing an infrared absorber is formed on an acrylic resin plate,
Information is recorded by forming on a substrate such as a polycarbonate resin plate and irradiating it with appropriate light, such as laser light. Also, a light blocking material (filter) for light in the infrared region is manufactured by mixing an infrared absorber with a mixture of a binder and an organic solvent and applying the mixture to, for example, a transparent acrylic resin plate. Furthermore, by kneading an infrared absorber into a resin such as methyl methacrylate resin and molding it, the material is used as glasses that block light in the infrared region. formula (In formula (1), R represents an alkyl group, R' represents an alkylamino group having 2 to 6 carbon atoms or a phenyl group which may be substituted with a halogen atom, and X represents an anion) Absorbents are also used in the applications described above. "Problems to be Solved by the Invention" Although the infrared absorbent represented by the above formula (1) has excellent infrared absorption ability, it has the drawback that its light fastness is insufficient; therefore, it has a high light fastness. Its use is restricted for such uses and purposes. "Means for Solving the Problems" The present inventors have conducted extensive research to solve the above-mentioned current problems, and have arrived at the present invention. (In formula (1), R represents an alkyl group, R' represents an alkylamino group having 2 to 6 carbon atoms or a phenyl group which may be substituted with a halogen atom, and X represents an anion) The following compounds (2), (3), and (4) are used as an absorbent. (In formulas (2), (3) and (4), R has the same meaning as above, and X' represents an anion. In formula (3), A represents an optionally substituted phenyl group or naphthalene group. ) or acetylacetone Ni (), Cu
Provided is a method for improving the light fastness of an infrared absorber represented by formula (1), which comprises using one or more compounds selected from chelates of Mn(), Mn(), or Co() in combination. do. In the present invention, specific examples of the infrared absorber represented by formula (1), formulas (2), (3), and (4), and the acetylacetone metal chelate compound (hereinafter referred to as additives) are as follows. Compounds such as: Examples of infrared absorbers of formula (1) (R, R', X - are those in each formula (1))

【表】【table】

【表】 式(2)の添加剤の例(R及びX-は式(2)における
ものである)。
[Table] Examples of additives of formula (2) (R and X - are as in formula (2)).

【表】 式(3)の添加剤の例(R,A,およびX′は式(3)
におけるものである)
[Table] Examples of additives of formula (3) (R, A, and X' are of formula (3)
)

【表】【table】

【表】 式(4)の添加剤の例(R,及びX′-は式(4)におけ
るものである)
[Table] Examples of additives of formula (4) (R and X′ - are those in formula (4))

【表】 アセチルアセトンの金属キレート化合物の例 No. ()−1 Ni()アセチルアセトナート 〃 −2 Cu()アセチルアセトナート 〃 −3 Mn()アセチルアセトナート 〃 −4 Co()アセチルアセトナート 本発明で式(1)の赤外線吸収剤は前記した添加剤
の1種又は2種以上を併用して後記するような塗
布法又は練り込み法によつて適用されるものであ
るが塗布法で適用する場合、式(1)の赤外線吸収
剤、及び添加剤を溶解する為の溶剤としてはジク
ロロメタン、ジクロロエタン、アセトン、メチル
エチルケトン等を挙げることが出来る。更にバイ
ンダーを併用して塗布する場合の溶剤の例として
はメチルエチルケトン、メチルイソブチルケト
ン、ジメチルホルムアミド、酢酸メチル、酢酸エ
チル、トルエン、キシレン、メタノール、エタノ
ール、イソプロピルアルコール、ジメチルホルム
アミド、ジクロロエタン等を挙げることが出来
る。そしてバインダーを併用する場合用いられる
バインダーの例としてはフエノール系、アルキツ
ド系、尿素メラミン系、エポキシ系、不飽和ポリ
エステル系、シリコン系、ポリウレタン系、ポリ
アクリレート系、ポリ酢酸ビニール系、ポリスチ
レン系樹脂等が挙げられる。 又式(1)の赤外線吸収剤を前記添加剤を併用して
樹脂に練り込み法で適用する場合の樹脂の例とし
てはポリアミド系、ポリスチレン系、ポリアクリ
レート系、ポリメタクリレート系、ポリカーボネ
ート系、セルローストリアセテート系、ポリエチ
レン系、ポリプロピレン系、ポリ塩化ビニル系、
ポリ塩化ビニリデン系、ポリアルキレンテレフタ
レート系、不飽和ポリエステル系、アクリル−ス
チレン系樹脂などが挙げられる。 式(1)に赤外線吸収剤に対する前記添加剤の添加
比率は赤外線吸収剤1.0に対し添加剤0.05〜5.0、
好ましくは0.3〜1.5である。 式(1)の赤外線吸収剤と前記添加剤を塗布して用
いる場合の基質の例としてはポリアクリレート
系、ポリメタクリレート系、ポリカーボネート
系、セルローストリアセテート系、ポリエチレン
系、ポリプロピレン系、ポリ塩化ビニル系、ポリ
塩化ビニリデン系、PVA系、ポリエステル系、
ポリアミド系、ポリイミド系、ポリスルホン系、
ポリエーテル系、ポリスチレン系、ポリアクリル
ニトリル系樹脂や必要によりこれ等の樹脂の表面
をシリコン系合成樹脂などで保護層を設けたもの
及び各種ガラス、セラミツクス、金属などが挙げ
られる。 塗布の方法としては式(1)の赤外線吸収剤と前記
添加剤の1種又は2種以上の混合物を前記した溶
剤に溶解して塗布するか赤外線吸収剤と前記添加
物を前記した溶剤に別々に溶解してから混合して
添布する。塗布法としてスプレー、或いはスピン
ナーを用いて前記したような樹脂の基板又はフイ
ルムに塗布する。又バインダーを併用する場合は
バインダーと溶媒の混合物に該赤外線吸収剤及び
添加剤を溶解せしめた液を基板又はフイルムにス
プレー、スピンナー、バーコーター、アプリケー
ター、グラビヤコーター等を用いて塗布する。 この場合基板又はフイルム上にまず添加剤の層
を設けその上に赤外線吸収剤の層を設けるか又は
その逆の順序によつて赤外線吸収剤と添加剤とか
らなる層を設けること相明数る。 練り込み法による場合は式(1)の赤外線吸収剤、
前記添加剤及び樹脂と混合し加熱溶融し、射出成
形機等で基板又はフイルム状に成型する。この場
合樹脂100に対して式(1)の赤外線吸収剤は通常
0.001〜1.0の範囲で又添加剤は前記したような範
囲で用いられる。 本発明の方法によつて式(1)の赤外線吸収剤が適
用された場合その耐光堅牢度が飛躍的に向上する
ので従来その耐光性が不十分なため使用の制限さ
れていた分野にも式(1)の赤外線吸収剤が使われる
ようになり又従来から用いられている分野にあつ
てもその耐光堅牢度が飛躍的に向上したので性能
の一層の改善がはかられた。 「実施例」 実施例によつて本発明を更に詳細に説明する。 実施例 1 ()−4の赤外線吸収剤 1g ()−a9の化合物(添加剤) 1g ジクロロエタン 100ml からなる溶液をアクリル板上にスピンナーを使用
して、2000r.p.mでコートした。この試験片を(A)
とする。比較例として、上記組成から()−a9
の化合物を除いた組成の溶液を上記同様にコート
し、この試験片を(B)とし耐光試験を行つた。 耐光試験機はスガ試験機(株)製、Xenon Fade
Meter(型式FA−25X型、容量6KVA)を用い
た。 露光前及び一定時間露光後のλmaxにおける吸
光度を測定し、残存率Hを下記の式により算出し
た。結果は表の通りであつた。 H=一定時間露光後の吸光度/露光前の吸光度×100
(%) Hの値(%)の大きいもの程耐光堅牢度が良好な
ことを示す。 露光時間 試験片 10時間 82時間 154時間 (A) 100.0 99.6 99.4 (B) 88.6 0 − 試験片(A)の残存率がたかく耐光堅牢度がすぐれ
ていることがわかる。 実施例 2〜4 実施例1において添加剤を下記の表のように変
える以外は実施例1と同様な操作を行つて次の結
果をえた。(Hの値(%)) 露光時間 実施例 添加剤 82時間 154時間 2 ()−a10 97.6 96.1 3 ()−c9 93.9 89.1 4 ()−b3 98.2 96.3 実施例 5 ()−7の赤外線吸収剤 1.0g ()−1の化合物(添加剤) 0.3g ジクロロエタン 100ml からなる溶液を実施例1と同様にコートしこの試
験片を(A)とする。比較例として、上記組成から
()−1を除いて作製した試験片を(B)とする。実
施例1と同様にして行つた耐光試験によるHの値
(%)は以下の通りであつた。 露光時間 試験片 82時間 154時間 (A) 97.5 31.4 (B) 88.6 0 実施例 6〜26 式(1)の赤外線吸収剤 1g 添加剤 1g ジクロロエタン 100ml からなる溶液を実施例1と同様にコートし、試験
片を作製し、耐光試験を行いHの値(%)を算出
した。結果は以下の通りであつた。
[Table] Examples of metal chelate compounds of acetylacetone No. ()-1 Ni () acetylacetonate 〃 -2 Cu () acetylacetonate 〃 -3 Mn () acetylacetonate 〃 -4 Co () acetylacetonate Book In the invention, the infrared absorber of formula (1) is applied by a coating method or a kneading method as described later using one or more of the above-mentioned additives, but it is applied by a coating method. In this case, examples of the solvent for dissolving the infrared absorber of formula (1) and additives include dichloromethane, dichloroethane, acetone, and methyl ethyl ketone. Furthermore, examples of solvents used when coating with a binder include methyl ethyl ketone, methyl isobutyl ketone, dimethyl formamide, methyl acetate, ethyl acetate, toluene, xylene, methanol, ethanol, isopropyl alcohol, dimethyl formamide, dichloroethane, etc. I can do it. Examples of binders that can be used in combination with binders include phenolic, alkyd, urea-melamine, epoxy, unsaturated polyester, silicone, polyurethane, polyacrylate, polyvinyl acetate, and polystyrene resins. can be mentioned. Examples of resins in which the infrared absorber of formula (1) is applied in combination with the above additives by kneading into the resin include polyamide, polystyrene, polyacrylate, polymethacrylate, polycarbonate, and cellulose. Triacetate-based, polyethylene-based, polypropylene-based, polyvinyl chloride-based,
Examples include polyvinylidene chloride resins, polyalkylene terephthalate resins, unsaturated polyester resins, and acrylic-styrene resins. In formula (1), the addition ratio of the additive to the infrared absorber is 0.05 to 5.0 of the additive to the infrared absorber of 1.0,
Preferably it is 0.3 to 1.5. Examples of substrates in which the infrared absorber of formula (1) and the additives are coated include polyacrylate-based, polymethacrylate-based, polycarbonate-based, cellulose triacetate-based, polyethylene-based, polypropylene-based, polyvinyl chloride-based, Polyvinylidene chloride, PVA, polyester,
Polyamide-based, polyimide-based, polysulfone-based,
Examples include polyether-based, polystyrene-based, polyacrylonitrile-based resins, resins whose surfaces are provided with a protective layer of silicone-based synthetic resin, etc., as well as various glasses, ceramics, and metals. The method of application is to dissolve one or more of the infrared absorber of formula (1) and the additives in the above-mentioned solvent, or to apply the infrared absorber and the additives separately in the above-mentioned solvent. Dissolve it in water, mix and apply. As a coating method, a spray or a spinner is used to coat the resin substrate or film as described above. When a binder is used in combination, a solution prepared by dissolving the infrared absorber and additives in a mixture of the binder and a solvent is applied to the substrate or film using a spray, spinner, bar coater, applicator, gravure coater, or the like. In this case, first a layer of the additive is provided on the substrate or film, and then a layer of the infrared absorber is provided thereon, or a layer consisting of the infrared absorber and the additive is provided in the reverse order. . When using the kneading method, the infrared absorber of formula (1),
The mixture is mixed with the additives and resin, heated and melted, and molded into a substrate or film using an injection molding machine or the like. In this case, the infrared absorber of formula (1) is usually
The range is from 0.001 to 1.0, and additives are used in the ranges described above. When the infrared absorbing agent of formula (1) is applied by the method of the present invention, its light fastness is dramatically improved, so that it can be used in fields where its use was previously restricted due to insufficient light resistance. Infrared absorbers (1) have come into use, and their light fastness has improved dramatically even in the fields where they have been traditionally used, leading to further improvements in performance. "Example" The present invention will be explained in more detail with reference to Examples. Example 1 A solution consisting of 1 g of the infrared absorber of ()-4 ()-a 9 (additive) and 100 ml of dichloroethane was coated on an acrylic plate at 2000 rpm using a spinner. This test piece (A)
shall be. As a comparative example, from the above composition ()−a 9
A solution having the composition except for the compound was coated in the same manner as above, and this test piece was used as (B) and a light resistance test was conducted. The light resistance tester is Xenon Fade manufactured by Suga Test Instruments Co., Ltd.
A meter (model FA-25X, capacity 6KVA) was used. The absorbance at λmax before exposure and after exposure for a certain period of time was measured, and the residual rate H was calculated using the following formula. The results were as shown in the table. H = Absorbance after exposure for a certain period of time / Absorbance before exposure x 100
(%) The larger the H value (%), the better the light fastness. Exposure time test piece 10 hours 82 hours 154 hours (A) 100.0 99.6 99.4 (B) 88.6 0 - It can be seen that the survival rate of the test piece (A) is high and the light fastness is excellent. Examples 2 to 4 The same operations as in Example 1 were performed except that the additives were changed as shown in the table below, and the following results were obtained. (Value of H (%)) Exposure time Example Additive 82 hours 154 hours 2 ()-a 10 97.6 96.1 3 ()-c 9 93.9 89.1 4 ()-b 3 98.2 96.3 Example 5 ()-7 A solution consisting of 1.0 g of infrared absorber ()-1 (additive) 0.3 g and 100 ml of dichloroethane was coated in the same manner as in Example 1, and this test piece was designated as (A). As a comparative example, a test piece prepared by removing ()-1 from the above composition is designated as (B). The H values (%) determined by the light fastness test conducted in the same manner as in Example 1 were as follows. Exposure time Test piece 82 hours 154 hours (A) 97.5 31.4 (B) 88.6 0 Examples 6 to 26 A solution consisting of 1 g of infrared absorber of formula (1), 1 g of additive, and 100 ml of dichloroethane was coated in the same manner as in Example 1, A test piece was prepared, a light resistance test was conducted, and the value of H (%) was calculated. The results were as follows.

【表】【table】

【表】 実施例 27 ()−11の赤外線吸収剤 0.3g ()−a5(添加剤) 0.05g ニトロセルロース 100g メタノール 20g メチルエチルケトン 10g トルエン 10g からなる組成液を磁製ボールミル中で16時間混合
し、1mm厚のポリエステルフイルム上へNo.12バー
コーターを用いて塗布し自然乾燥した。この試験
片を(A)とする。比較例として、上記組成から、
()−a5の添加剤を除いた組成液で前記同様にし
て試験片(B)を作製した。(A)(B)について実施例1と
同様に耐光試験を行いHの値(%)を算出した。
結果は以下の通りであつた。
[Table] Example 27 A composition solution consisting of ()-11 infrared absorber 0.3 g ()-a 5 (additive) 0.05 g, nitrocellulose 100 g, methanol 20 g, methyl ethyl ketone 10 g, and toluene 10 g was mixed in a porcelain ball mill for 16 hours. It was applied onto a 1 mm thick polyester film using a No. 12 bar coater and air-dried. This test piece is designated as (A). As a comparative example, from the above composition,
()-a A test piece (B) was prepared in the same manner as described above using the composition solution excluding the additive 5 . A light fastness test was performed on (A) and (B) in the same manner as in Example 1, and the H value (%) was calculated.
The results were as follows.

【表】 実施例 28 ()−3の赤外線吸収剤 0.3g ()−c5(添加剤) 0.3g アクリルメラミンクリヤー 100g メチルイソブチルケトン 15g トルエン 5g 酢酸エチル 5g の組成液を用いて実施例27と同様にして添加剤の
入つたものと入つていない試験片(A),(B)を作製
し、耐光試験を行つた結果は以下の通りであつ
た。
[Table] Infrared absorber of Example 28 ()-3 0.3g ()-c 5 (additive) 0.3g Acrylic melamine clear 100g Methyl isobutyl ketone 15g Toluene 5g Ethyl acetate 5g Using the composition solution of Example 27 Test pieces (A) and (B) with and without additives were prepared in the same manner, and a light resistance test was conducted.The results were as follows.

【表】 実施例 29 ()−4の赤外線吸収剤 0.03g ()−1(添加剤) 0.03g ポリメチルメタクリレート樹脂 100g 上記組成物を加熱ニーダーで10分間混練した
後、混合物を取り出し冷却固化後ハンマーミルで
粗粉砕し、次に射出成形機で厚さ1mmのブレート
に成形した。 この試験片を(A)とする。比較例として上記組成
物から()−1の添加剤を除いた組成物につい
て前記と同様にして試験片(B)を作製した。スガ試
験機(株)製スタンダード紫外線ロングライフ・フエ
ードメーター(型式FAL−3H型、電源容量200V
7KVA 50Hz)を用い耐光試験を行い、以下の結
果を得た。(Hの値、%)
[Table] Example 29 Infrared absorber of ()-4 0.03g ()-1 (additive) 0.03g Polymethyl methacrylate resin 100g After kneading the above composition in a heating kneader for 10 minutes, the mixture was taken out and cooled and solidified. It was coarsely ground using a hammer mill, and then molded into a plate with a thickness of 1 mm using an injection molding machine. This test piece is designated as (A). As a comparative example, a test piece (B) was prepared in the same manner as above using a composition obtained by removing the additive ()-1 from the above composition. Standard ultraviolet long life fade meter manufactured by Suga Test Instruments Co., Ltd. (model FAL-3H, power capacity 200V)
A light resistance test was conducted using 7KVA 50Hz) and the following results were obtained. (value of H, %)

【表】 「発明の効果」 式(1)に示される赤外線吸収剤を適用するにあた
り特定の添加剤を使用することによつて該赤外線
吸収剤の耐光堅牢度を飛躍的に向上させることが
出来た。
[Table] "Effects of the Invention" By using specific additives when applying the infrared absorbent shown in formula (1), the light fastness of the infrared absorbent can be dramatically improved. Ta.

Claims (1)

【特許請求の範囲】 1 式 (式(1)においてRはアルキル基を、R′は炭素
総数2〜6のアルキルアミノ基又はハロゲン原子
で置換されていてもよいフエニル基を、Xは陰イ
オンを表す) で表される赤外線吸収剤に下記(2),(3),(4)の化合
(式(2),(3)及び(4)においてRは前記と同じ意味
を、X′は陰イオンを表す。又式(3)においてAは
置換していてもよいフエニル基又はナフタレン基
を表す) 又はアセチルアセトンのNi(),Cu(),Mn
()若しくはCo()キレート化物 から選ばれる化合物の1種又は2種以上を併用す
ることを特徴とする式(1)で表される赤外線吸収剤
の耐光堅牢度向上法。
[Claims] 1 formula (In formula (1), R represents an alkyl group, R' represents an alkylamino group having 2 to 6 carbon atoms or a phenyl group which may be substituted with a halogen atom, and X represents an anion) The following compounds (2), (3), and (4) are used as an absorbent. (In formulas (2), (3) and (4), R has the same meaning as above, and X' represents an anion. In formula (3), A represents an optionally substituted phenyl group or naphthalene group. ) or acetylacetone Ni(), Cu(), Mn
A method for improving the light fastness of an infrared absorber represented by formula (1), which comprises using one or more compounds selected from Co() and Co() chelates.
JP60171792A 1985-08-06 1985-08-06 Improvement of light fastness of infrared absorber Granted JPS6232132A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP60171792A JPS6232132A (en) 1985-08-06 1985-08-06 Improvement of light fastness of infrared absorber

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP60171792A JPS6232132A (en) 1985-08-06 1985-08-06 Improvement of light fastness of infrared absorber

Publications (2)

Publication Number Publication Date
JPS6232132A JPS6232132A (en) 1987-02-12
JPH0453892B2 true JPH0453892B2 (en) 1992-08-27

Family

ID=15929780

Family Applications (1)

Application Number Title Priority Date Filing Date
JP60171792A Granted JPS6232132A (en) 1985-08-06 1985-08-06 Improvement of light fastness of infrared absorber

Country Status (1)

Country Link
JP (1) JPS6232132A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0796335B2 (en) * 1987-10-27 1995-10-18 キヤノン株式会社 Optical recording medium
JP2000007871A (en) * 1998-06-23 2000-01-11 Kureha Chem Ind Co Ltd Resin composition and its production, optical filter and device equipped with the same, and athermanous filter, optical fiber and glass lens
EP1385024B1 (en) 2001-05-01 2010-05-19 Bridgestone Corporation Near infrared absorbtion film
US8865293B2 (en) 2008-12-15 2014-10-21 3M Innovative Properties Company Optically active materials and articles and systems in which they may be used
WO2019146506A1 (en) * 2018-01-25 2019-08-01 キヤノン株式会社 Compound, liquid composition, thermal transfer recording sheet, toner, resist composition for color filter, and color filter

Also Published As

Publication number Publication date
JPS6232132A (en) 1987-02-12

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