CN101610893A - 二硫醇烯金属配合物无色ir吸收剂 - Google Patents

二硫醇烯金属配合物无色ir吸收剂 Download PDF

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CN101610893A
CN101610893A CNA2007800479029A CN200780047902A CN101610893A CN 101610893 A CN101610893 A CN 101610893A CN A2007800479029 A CNA2007800479029 A CN A2007800479029A CN 200780047902 A CN200780047902 A CN 200780047902A CN 101610893 A CN101610893 A CN 101610893A
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CN101610893B (zh
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U·莱曼
D·海兹勒
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BASF Schweiz AG
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Ciba SC Holding AG
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    • C07F15/00—Compounds containing elements of Groups 8, 9, 10 or 18 of the Periodic Table
    • C07F15/04—Nickel compounds
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Abstract

本发明涉及二硫醇烯金属配合物无色IR吸收剂，具体地，本发明涉及式(I)和/或(II)的化合物作为无色IR吸收剂(colorless IR absorbers)的应用，其中M为Ni、Pd、Pt、Au、Ir、Fe、Zn、W、Cu、Mo、In、Mn、Co、Mg、V、Cr或Ti，X1、X2及X3各自彼此独立地为硫或氧，R1、R2、R3、R4、R5及R6各自彼此独立地为氢、NR7R8、未取代或取代的C1－C18烷基、其中所述亚烷基链被氧间隔的C1－C18烷基、未取代或取代的C1－C18烯基、未取代或取代的芳基、未取代或取代的芳烷基或者未取代或取代的杂芳基烷基，R7及R8各自彼此独立地为未取代或取代的C1－C18烷基、未取代或取代的芳基、未取代或取代的芳烷基或者未取代或取代的杂芳基烷基，任选地，将另外的IR吸收剂加入到所述式(I)及(II)的化合物中。本发明还涉及新的式(I)及(II)的二硫醇烯(dithiolene)化合物，其中X1为氧以及X2和X3为氧或硫。进一步地，本发明涉及新的式(I)及(II)的二硫醇烯化合物，其中R1至R6为NR7R8。

Description

二硫醇烯金属配合物无色IR吸收剂
技术领域
本发明涉及特定二硫醇烯(dithiolene)金属配合物用作无色IR吸收剂的应用。本发明还涉及新的二硫醇烯金属配合物。
背景技术
无色或仅最低限度带颜色的IR吸收剂在宽泛的应用范围内满足重要的技术需求，例如保密印刷(银行票据、信用卡、身份证、护照等等)、不可见且IR可读条形码、塑料的激光焊接、使用IR辐射器的表面涂料固化、印刷的干燥及固化、调色剂在纸上的固定、PDPs(等离子显示板)用的光学过滤器、激光标记、塑料预成型体的加热等等。
已知数类IR吸收剂，例如，例如醌-二亚铵或铵盐、聚甲炔(例如菁蓝(cyanines)、方酸菁(squaraines)、克酮酸菁(croconaines))、酞菁及萘酞菁、二硫醇烯及其他金属配合物。最近还已知了更新的结构，例如，例如夸特锐烯二亚酰胺(quaterrylene diimides)。
除了那些有机物质外，还已知了无机物质，例如，例如以纳米微粒形式并涂覆了云母材料的六硼化镧、铟锡氧化物(ITO)、锑锡氧化物(ATO)(来自Merck的“Lazerflair”)。
尽管已知了许多化合物种类及结构，但至今还未知从技术角度来看令人满意的IR吸收剂。尤其是就“无色”亦即最低程度的固有颜色而言，还未知同时满足另一技术稳定性要求(热稳定性和/或光稳定性)的真正令人满意的解决方案。例如，IR吸收剂，例如用于保密印刷，可从“American Dye Source”获得，但实际上所有这些都在VIS光谱范围(从400到700nm)内具有吸收。
令人惊讶地，现在已经发现有一类杂环二硫醇烯金属配合物已知其本身就能够满足那些需求。尤其在无色方面，这些化合物明显优于已知的IR吸收剂，且同时满足其它的技术要求，例如，例如良好的耐光牢度(用于保密印刷)或者掺加入塑料材料(塑料的激光焊接)时的良好热稳定性。
发明内容因此，本发明涉及式I和/或II的化合物作为无色IR吸收剂的应用
Figure G2007800479029D00021
其中
M为Ni、Pd、Pt、Au、Ir、Fe、Zn、W、Cu、Mo、In、Mn、Co、Mg、V、Cr或Ti，
X1、X2及X3各自彼此独立地为硫或氧，
R1、R2、R3、R4、R5及R6各自彼此独立地为氢、NR7R8、未取代或取代的C1-C18烷基、其中所述亚烷基链被氧间隔的C1-C18烷基、未取代或取代的C1-C18烯基、未取代或取代的芳基、未取代或取代的芳烷基或者未取代或取代的杂芳基烷基，R7及R8各自彼此独立地为未取代或取代的C1-C18烷基、未取代或取代的芳基、未取代或取代的芳烷基或者未取代或取代的杂芳基烷基，
任选地，将另外的IR吸收剂加入到所述式I及II化合物中。
优选其中所述金属M为Ni、Pd或Pt的式I化合物。(权利要求2)
如果所述取代基R1至R6或者R1至R4为C1-C18烷基基团，它们优选为未取代的C1-C18烷基基团，更优选为C1-C8烷基基团，包括直链和支链以及环状烷基基团。可作为实例提及的有以下基团：丙基、异丙基、正丁基、仲丁基、叔丁基、正己基、2-乙基己基、正辛基、环戊基、环己基。
如果所述取代基R1至R6或者R1至R4为其中所述亚烷基链被氧间隔的C1-C18烷基基团，它们优选为-(CH2)n-[O-(CH2)m]k-OCH3，且n＝2-6，m＝2或3，k＝1-6。
如果所述取代基R1至R6或者R1至R4为C1-C18烯基基团，它们优选为未取代的C1-C18烯基基团，更优选为C1-C6烯基基团。实例可以为乙烯基或烯丙基。
如果所述取代基R1至R6或者R1至R4为芳基基团，它们优选为未取代的芳基基团，例如苯基、萘基、蒽基或菲基基团。
如果所述取代基R1至R6或者R1至R4为芳烷基基团，它们优选为未取代的芳烷基基团，例如-(CH2)q-苯基，其中q＝1-6，特别是苄基、乙基苯基、丙基苯基。
如果所述取代基R1至R6或者R1至R4为杂芳基烷基基团，它们优选为未取代的杂芳基烷基基团，这意味着杂芳环直接连接到烷基基团。所述杂芳环例如为咪唑基、吡啶基、噻吩基、呋喃基、噻唑基、吲哚基、喹啉基、吡唑基、吡嗪基(pyrazyl)、哒嗪基(pyridazyl)或嘧啶基。
所述取代基R1至R6或者R1至R4优选为未取代的C1-C18烷基、-(CH2)n-[O-(CH2)m]k-OCH3且n＝2-6，m＝2或3，k＝1-6、未取代的C1-C18烯基、未取代的芳烷基或-N(C1-C6烷基)2。
所述取代基R7及R8优选为C1-C6烷基基团。
具体实施方式
在一个优选实施方案中，所述式I化合物用作无色IR吸收剂，其中
M为Ni、Pd、Pt，
X1、X2及X3各自彼此独立地为硫或氧，
R1、R2、R3、R4各自彼此独立地为-N(C1-C6烷基)2、未取代的C1-C8烷基、-(CH2)n-[O-(CH2)m]k-OCH3且n＝2-6，m＝2或3，k＝1-6、乙烯基或烯丙基、-(CH2)q-苯基且q＝1-6。(权利要求3)
特别感兴趣的是所述结构Ia至Ih。
Figure G2007800479029D00041
(权利要求4)
无色IR吸收剂可被用于所有依赖于所述IR吸收剂保持不可见的应用领域。举例来说可以提及的应用有以下这些：保密印刷(银行票据、信用卡、身份证、护照等等)、不可见且IR可读条形码、塑料的激光焊接、使用IR辐射器的表面涂料固化、印刷的干燥及固化、调色剂在纸上的固定、激光标记(塑料材料、纸张、木材等等)以及塑料预成型体的加热。(权利要求5)
特别适合的应用领域为所述式I和/或II的化合物在保密印刷中以及在塑料材料的激光焊接中的应用。(权利要求6)
在另一个实施方案中，所述式I及II的化合物用于保密印刷及条形码印刷。
(权利要求7)
所述式I及II的IR吸收剂还可以是以与另外的已知IR吸收剂的混合物的形式，特别是与聚甲炔(菁蓝、方酸菁、克酮酸菁)的混合物。这种IR吸收剂混合物特别适用于保密印刷。(权利要求8)
优选的聚甲炔的实例列于下表：
菁蓝
Figure G2007800479029D00051
Figure G2007800479029D00052
方酸菁
Figure G2007800479029D00053
克酮酸菁
Figure G2007800479029D00061
Figure G2007800479029D00062
取决于所选择的应用，所述IR吸收剂以10ppm到10％的浓度使用，优选100ppm到2％。
所述激光焊接优选使用ND:YAG激光器以1064nm或使用二极管激光器以980nm或940nm进行，以及IR吸收剂浓度为例如5到500ppm，优选10到100ppm。
在激光焊接中，塑料部件彼此焊接为一体。根据本发明的二硫醇烯特别适用于焊接透明塑料材料，例如聚丙烯、聚乙烯醇缩丁醛、聚酰胺、聚碳酸酯、聚碳酸酯-聚对苯二甲酸乙二酯混合物、聚碳酸酯-聚对苯二甲酸丁二酯混合物、聚碳酸酯-丙烯腈-苯乙烯-丙烯腈共聚物混合物、聚碳酸酯-丙烯腈-丁二烯-苯乙烯共聚物混合物、聚甲基丙烯酸甲酯-丙烯腈-丁二烯-苯乙烯共聚物混合物(MABS)、聚对苯二甲酸乙二酯、聚对苯二甲酸丁二酯、聚甲基丙烯酸甲酯、聚丙烯酸丁酯、聚甲基丙烯酸甲酯-聚偏二氟乙烯混合物、丙烯腈-丁二烯-苯乙烯共聚物(ABS)、苯乙烯-丙烯腈共聚物(SAN)及聚苯砜(polyphenylene sulfone)以及它们的混合物。
在焊接中特别有益的是使用两个相同透明的塑料工件，例如无色-透明/无色-透明或者有色-透明/有色-透明。
在保密印刷中，所述IR吸收剂加入到所述油墨中。合适的印刷油墨为水基的、油基的或基于溶剂的印刷油墨，根据色料或染料，用于墨喷式印刷、橡皮版印刷、丝网印刷、凹版印刷、胶板印刷、激光印刷或凸版印刷以及用于电子照相术。
本发明还涉及新的式I及II的二硫醇烯化合物，其中
M为Ni、Pd、Pt、Au、Ir、Fe、Zn、W、Cu、Mo、In、Mn、Co、Mg、V、Cr或Ti，
X1为氧以及X2及X3为氧或硫，
R1、R2、R3、R4、R5及R6各自彼此独立地为氢、NR7R8、未取代或取代的C1-C18烷基、其中所述亚烷基链被氧间隔的C1-C18烷基、未取代或取代的C1-C18烯基、未取代或取代的芳基、未取代或取代的芳烷基或者未取代或取代的杂芳基烷基，R7及R8各自彼此独立地为未取代或取代的C1-C18烷基、未取代或取代的芳基、未取代或取代的芳烷基或者未取代或取代的杂芳基烷基。(权利要求9)
那些化合物通过用适当的溶剂氧化相应的硫化合物(X1，X2，X3＝S)而获得或者按实施例所描述的方法获得。
举例来说可以提及以下化合物：
Figure G2007800479029D00071
本发明还涉及新的式I及II的二硫醇烯化合物，其中
M为Ni、Pd、Pt、Au、Ir、Fe、Zn、W、Cu、Mo、In、Mn、Co、Mg、V、Cr或Ti，
X1、X2及X3各自彼此独立地为硫或氧，
R1、R2、R3、R4、R5及R6为NR7R8，其中R7及R8各自彼此独立地为未取代或取代的C1-C18烷基、未取代或取代的芳基、未取代或取代的芳烷基或者未取代或取代的杂芳基烷基(权利要求10)。
-NR7R8优选为-N(C1-C6烷基)2
举例来说可以提及以下化合物Ic及Id：
Figure G2007800479029D00081
类似于已知的二硫醇烯化合物，所述新的二硫醇烯化合物适用于保密印刷(银行票据、信用卡、身份证、护照等等)、不可见且IR可读条形码、塑料的激光焊接、使用IR辐射器的表面涂料固化、印刷的干燥及固化、调色剂在纸上的固定、激光标记(塑料、纸张、木材等等)以及塑料预成型体的加热等等。
另外，所述新的式I及II的二硫醇烯化合物适于用作等离子显示板(PDPs)用的光学过滤器。对于此应用，特别有兴趣的是低于1000nm的吸收，尤其是大约900nm。
实施例
实施例1
Figure G2007800479029D00082
的制备
所述化合物已知于J.Chem.Soc，Dalton Trans 1998，3731-3736，以及其制备方法描述于该文献中。
在回流条件下，将1，3-二异丙基-4，5-二氧代-咪唑啉-2-硫酮与金属镍及Lawesson试剂
Figure G2007800479029D00091
在氯苯中反应。
最大吸收(氯仿)：1001nm(79000)
实施例2
Figure G2007800479029D00092
的制备
类似于实施例1，与二氯化铂及Lawesson试剂进行反应。
最大吸收(氯仿)：1000nm(113000)。
实施例3a
Figure G2007800479029D00093
的制备
在室温、搅拌下，将12.26份N，N-二甲基肼加入到7.65份二硫化碳在250份二氯乙烷中的溶液中。然后，将温度升至40℃且在该温度下搅拌16小时直到反应完成。随后，将温度升至80℃持续一小时。然后，加入另外的750份二氯乙烷，且在90分钟期间内滴加入13.88份草酰氯(溶解于少量二氯乙烷中)。然后将所述反应混合物加热到回流并保持回流2小时，此后将其浓缩、滤出黄色晶体并用少量二氯乙烷洗涤。干燥后，得到14份具有如上所述结构的产物。实 施例3b
Figure G2007800479029D00094
的制备
将0.333份二氯化铂加入到0.541份来自实施例3a的产物及1.085份Lawesson试剂在50份甲苯中的溶液中。将所述反应混合物保持在110℃下90分钟而后趁热过滤，待冷却后将500份正己烷加入到所述滤液中。将所得到的沉淀物滤出并干燥，得到0.5份产物(最大吸收994nm)。
实施例4
除了所使用的金属为钼外，所述过程类似于前述实施例，由此得到相应的1∶3钼配合物：
实施例5
Figure G2007800479029D00102
的制备
在二氯甲烷中在回流温度下将来自实施例2的化合物用大气中的氧气氧化从而生成相应的氧代化合物。发现其最大吸收在968nm。
实施例6a
Figure G2007800479029D00103
的制备
在40℃下将29.14份1，3-二-正丙基-脲溶解于300份甲苯中。在80℃下于40分钟期间内将27.18份草酰氯加入到搅拌的溶液中。在100℃下再进一步搅拌一小时后，在60℃下将所述溶液蒸发至干：得到36.8份所述产物。
实施例6b
Figure G2007800479029D00111
的制备
在氮气氛下在100份甲苯中将1.59份来自实施例6a的产物、1.06份二氯化铂及3.47份Lawesson试剂加热到110℃。在45分钟的反应时间之后，将所述深色溶液冷却降至-10℃而后滤出所述沉淀，用乙醇及一些丙酮洗涤。为了纯化，将所述粗产物溶解于二氯甲烷并通过加入甲醇缓慢沉淀。通过过滤收集深蓝色晶体。发现所述产物的最大吸收在900nm(氯仿)。实施例7
的制备
除了用氯化钯代替氯化铂外，类似于实施例6b进行，得到最大吸收921nm的相应钯配合物。
实施例8
Figure G2007800479029D00113
的制备
除了用金属镍代替氯化铂外，类似于实施例6b进行，得到最大吸收891nm的相应镍配合物。
实施例9至24
按如实施例1至8所描述的类似步骤得到实施例9到24的化合物(结构于下表给出)：
Figure G2007800479029D00121
Figure G2007800479029D00131
应用实施例
实施例A1(保密印刷)
在Skandex混合器中将11.9份乙烯基氯、2.1份乙酸乙烯酯、10份乙氧基丙醇、75.5份甲基乙基酮及0.5份来自实施例1的产物与150g玻璃珠一起振摇30分钟。
使用刮刀将所得到的印刷油墨施用于硬性像纸(湿膜厚度：6μm)。所述印迹在视觉上是无色的，但使用IR-观察装置(截止滤光片715nm)在IR范围内则是明显可见的。所述耐光牢度是优异的。
实施例A2(保密印刷)
除了使用来自实施例2的IR吸收剂外，按实施例A1中所示的方法进行，由此同样得到具有优异耐光牢度的无色印迹，其使用IR-观察装置在红外范围内是明显可见的。
实施例A3(塑料材料的激光焊接)
使用注射模塑机，将来自实施例1的IR吸收剂掺加入厚度2mm的聚碳酸酯圆片中(浓度：100ppm)。使用Nd:YAG激光器，在30瓦特功率下以20mm/s的前进速率将所得到的几乎无色的圆片焊接到第二块1mm厚的不包含IR吸收剂的纯聚碳酸酯圆片上。所得到的焊缝以优异的连接、无变化的透射度、无熔融侵入(melt irruptions)以及无鼓泡为特征。在重机械负荷下，所述圆片在所述焊缝处没有发生断裂。
实施例A4(塑料材料的激光焊接)
除了使用来自实施例2的IR吸收剂外，按实施例A3中所描述的方法进行，同样得到具有优异焊接特性的几乎无色的聚碳酸酯圆片。所得到的焊缝具有无变化的透明度，所述焊接没有留下熔融侵入或鼓泡而且所述焊缝的强度优异。
实施例A5及A6
除了使用具有980nm发射波长的二极管激光器代替使用Nd:YAG激光器(1064nm)外，按实施例A3及A4中所描述的方法进行，得到与实施例A3及A4中所描述的那些类似的良好结果。
实施例A7及A8
除了使用具有940nm发射波长的二极管激光器代替使用Nd:YAG激光器(1064nm)外，按实施例A3及A4中所描述的方法进行，在80瓦特激光功率下获得同等良好的焊缝。
实施例A9
除了使用具有1.5mm厚度的聚丙烯圆片外，按实施例A3中所描述的方法进行，所得到的焊缝同样优良。

Claims (11)

1、式I和/或II的化合物作为无色IR吸收剂的应用
Figure A2007800479020002C1
其中
M为Ni、Pd、Pt、Au、Ir、Fe、Zn、W、Cu、Mo、In、Mn、Co、Mg、V、Cr或Ti，
X1、X2及X3各自彼此独立地为硫或氧，
R1、R2、R3、R4、R5及R6各自彼此独立地为氢、NR7R8、未取代或取代的C1-C18烷基、其中所述亚烷基链被氧间隔的C1-C18烷基、未取代或取代的C1-C18烯基、未取代或取代的芳基、未取代或取代的芳烷基或者未取代或取代的杂芳基烷基，R7及R8各自彼此独立地为未取代或取代的C1-C18烷基、未取代或取代的芳基、未取代或取代的芳烷基或者未取代或取代的杂芳基烷基，
任选地，将另外的IR吸收剂加入到所述式I及II化合物中。
2、根据权利要求1的式I化合物作为无色IR吸收剂的应用，其中M为Ni、Pd或Pt。
3、根据权利要求1的式I化合物作为无色IR吸收剂的应用
其中
M为Ni、Pd、Pt，
X1、X2及X3各自彼此独立地为硫或氧，
R1、R2、R3、R4各自彼此独立地为-N(C1-C6烷基)2、未取代的C1-C8烷基、-(CH2)n-[O-(CH2)m]k-OCH3且n＝2-6，m＝2或3，k＝1-6、乙烯基或烯丙基、-(CH2)q-苯基且q＝1-6。
4、根据权利要求1的式Ia、Ib、Ic、Id、Ie、If、Ig或Ih化合物作为无色IR吸收剂的应用
Figure A2007800479020003C1
5、根据权利要求1-4任一项的式I和II化合物的应用，用于保密印刷、不可见且IR可读条形码、塑料的激光焊接、使用IR辐射器的表面涂料固化、印刷的干燥及固化、调色剂在纸上的固定、激光标记以及塑料预成型体的加热。
6、根据权利要求5的式I和II化合物的应用，用于塑料材料的激光焊接。
7、根据权利要求5的式I和II化合物的应用，用于保密印刷及条形码印刷中。
8、在与另外的来自聚甲炔类的IR吸收剂的混合物中的根据权利要求1的式I和II化合物的应用。
9、式I和/或II的化合物
Figure A2007800479020004C1
其中
M为Ni、Pd、Pt、Au、Ir、Fe、Zn、W、Cu、Mo、In、Mn、Co、Mg、V、Cr或Ti，
X1为氧，
X2及X3各自彼此独立地为硫或氧，
R1、R2、R3、R4、R5及R6各自彼此独立地为氢、NR7R8、未取代或取代的C1-C18烷基、其中所述亚烷基链被氧间隔的C1-C18烷基、未取代或取代的C1-C18烯基、未取代或取代的芳基、未取代或取代的芳烷基或者未取代或取代的杂芳基烷基，R7及R8各自彼此独立地为未取代或取代的C1-C18烷基、未取代或取代的芳基、未取代或取代的芳烷基或者未取代或取代的杂芳基烷基。
10、式I和/或II的化合物
Figure A2007800479020004C2
其中
M为Ni、Pd、Pt、Au、Ir、Fe、Zn、W、Cu、Mo、In、Mn、Co、Mg、V、Cr或Ti，
X1、X2及X3各自彼此独立地为硫或氧，
R1、R2、R3、R4、R5及R6为NR7R8，其中R7及R8各自彼此独立地为未取代或取代的C1-C18烷基、未取代或取代的芳基、未取代或取代的芳烷基或者未取代或取代的杂芳基烷基。
11、根据权利要求9和10的化合物的应用，用于保密印刷、条形码、塑料的激光焊接、使用IR辐射器的表面涂料固化、印刷的干燥及固化、调色剂在纸或塑料上的固定、塑料、纸及其它天然或合成材料的激光标记以及塑料预成型体的加热以及还用于等离子显示板(PDPs)用的光学过滤器。
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