CN1771299A - 红外吸收化合物和它们在成象元件中的应用 - Google Patents
红外吸收化合物和它们在成象元件中的应用 Download PDFInfo
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- CN1771299A CN1771299A CN200480008191.0A CN200480008191A CN1771299A CN 1771299 A CN1771299 A CN 1771299A CN 200480008191 A CN200480008191 A CN 200480008191A CN 1771299 A CN1771299 A CN 1771299A
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- 239000012791 sliding layer Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- ORFSSYGWXNGVFB-UHFFFAOYSA-N sodium 4-amino-6-[[4-[4-[(8-amino-1-hydroxy-5,7-disulfonaphthalen-2-yl)diazenyl]-3-methoxyphenyl]-2-methoxyphenyl]diazenyl]-5-hydroxynaphthalene-1,3-disulfonic acid Chemical compound COC1=C(C=CC(=C1)C2=CC(=C(C=C2)N=NC3=C(C4=C(C=C3)C(=CC(=C4N)S(=O)(=O)O)S(=O)(=O)O)O)OC)N=NC5=C(C6=C(C=C5)C(=CC(=C6N)S(=O)(=O)O)S(=O)(=O)O)O.[Na+] ORFSSYGWXNGVFB-UHFFFAOYSA-N 0.000 description 1
- 235000017557 sodium bicarbonate Nutrition 0.000 description 1
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- 229940067741 sodium octyl sulfate Drugs 0.000 description 1
- 159000000000 sodium salts Chemical class 0.000 description 1
- WFRKJMRGXGWHBM-UHFFFAOYSA-M sodium;octyl sulfate Chemical compound [Na+].CCCCCCCCOS([O-])(=O)=O WFRKJMRGXGWHBM-UHFFFAOYSA-M 0.000 description 1
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- 230000008022 sublimation Effects 0.000 description 1
- FDDDEECHVMSUSB-UHFFFAOYSA-N sulfanilamide Chemical compound NC1=CC=C(S(N)(=O)=O)C=C1 FDDDEECHVMSUSB-UHFFFAOYSA-N 0.000 description 1
- 229940124530 sulfonamide Drugs 0.000 description 1
- 125000001273 sulfonato group Chemical group [O-]S(*)(=O)=O 0.000 description 1
- 150000003462 sulfoxides Chemical group 0.000 description 1
- CSMFSDCPJHNZRY-UHFFFAOYSA-N sulfuric acid monodecyl ester Natural products CCCCCCCCCCOS(O)(=O)=O CSMFSDCPJHNZRY-UHFFFAOYSA-N 0.000 description 1
- 150000003470 sulfuric acid monoesters Chemical class 0.000 description 1
- YBBRCQOCSYXUOC-UHFFFAOYSA-N sulfuryl dichloride Chemical compound ClS(Cl)(=O)=O YBBRCQOCSYXUOC-UHFFFAOYSA-N 0.000 description 1
- CXVGEDCSTKKODG-UHFFFAOYSA-N sulisobenzone Chemical compound C1=C(S(O)(=O)=O)C(OC)=CC(O)=C1C(=O)C1=CC=CC=C1 CXVGEDCSTKKODG-UHFFFAOYSA-N 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
- 150000003512 tertiary amines Chemical class 0.000 description 1
- 125000005207 tetraalkylammonium group Chemical group 0.000 description 1
- 238000007651 thermal printing Methods 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
- 150000003568 thioethers Chemical class 0.000 description 1
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- 239000010936 titanium Substances 0.000 description 1
- 125000002088 tosyl group Chemical group [H]C1=C([H])C(=C([H])C([H])=C1C([H])([H])[H])S(*)(=O)=O 0.000 description 1
- 125000005208 trialkylammonium group Chemical group 0.000 description 1
- JXUKBNICSRJFAP-UHFFFAOYSA-N triethoxy-[3-(oxiran-2-ylmethoxy)propyl]silane Chemical compound CCO[Si](OCC)(OCC)CCCOCC1CO1 JXUKBNICSRJFAP-UHFFFAOYSA-N 0.000 description 1
- ITMCEJHCFYSIIV-UHFFFAOYSA-N triflic acid Chemical compound OS(=O)(=O)C(F)(F)F ITMCEJHCFYSIIV-UHFFFAOYSA-N 0.000 description 1
- LRFUMYYTRFKMMB-UHFFFAOYSA-N trifluoromethyl acetate Chemical group CC(=O)OC(F)(F)F LRFUMYYTRFKMMB-UHFFFAOYSA-N 0.000 description 1
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- WLOQLWBIJZDHET-UHFFFAOYSA-N triphenylsulfonium Chemical compound C1=CC=CC=C1[S+](C=1C=CC=CC=1)C1=CC=CC=C1 WLOQLWBIJZDHET-UHFFFAOYSA-N 0.000 description 1
- 239000012953 triphenylsulfonium Substances 0.000 description 1
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- ROVRRJSRRSGUOL-UHFFFAOYSA-N victoria blue bo Chemical compound [Cl-].C12=CC=CC=C2C(NCC)=CC=C1C(C=1C=CC(=CC=1)N(CC)CC)=C1C=CC(=[N+](CC)CC)C=C1 ROVRRJSRRSGUOL-UHFFFAOYSA-N 0.000 description 1
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Abstract
本发明公开了红外吸收化合物(其中阴离子和阳离子均吸收红外辐射)、包含这些化合物的成象元件和使用所述成象元件形成图象的方法。所述化合物具有结构(I)和(II),其中Y1和Y2各自独立为氢、卤基、烷基、二苯氨基或苯硫基;R1、R2、R3和R4各自独立为氢、甲基或SO3 -,其附带条件为R1、R2、R3和R4中的两个为SO3 -;R5和R6各自独立为烷基;Z1、Z2、Z4和Z5各自独立为稠合苯基或稠合萘基;Z3和Z6各自独立为两个氢原子、一个环己烯残基或一个环戊烯残基;X1、X2、X3和X4各自独立为S、O、NH、CH2或C(CH3) 2;且n1和n2各自独立为0到4。
Description
发明领域
本发明涉及红外吸收化合物和包含这些化合物的成象元件。更详细地讲,本发明涉及红外吸收化合物,其中阴离子和阳离子吸收近红外和/或红外辐射。
发明背景
在平版印刷中,亲墨区(也称作图像部分)建立在亲水表面。当表面用水湿润并涂覆油墨时,亲水区保留水且排斥油墨而亲墨区接受油墨且排斥水。油墨迁移到材料表面,在所述表面上复制图像。一般来说,油墨首先迁移到中间印刷橡皮布上,随后又被迁移到复制图像的材料的表面。
用作平版印版前驱体的成象元件通常包含涂覆于基片亲水表面的成象层。所述成象层包括一个或多个分散于合适的粘合剂的辐射敏感组份。或者,所述辐射敏感组份也可以是粘合剂材料。如果在成象后,成象层的已成象区在显影过程中被移除,而暴露出下方基片的亲水表面,则前驱体为阳图型印版。相反,如果未成象区在显影过程中被移除,则前驱体为阴图型印版。在各个情形中,成象层的保留区域(即图像部分)亲油墨,而显影过程所暴露的亲水表面区域接受水和水溶液(通常为润版液)并排斥油墨。
胶印版的直接数字成象(无需通过底片成象)在印刷工业中越来越重要。已经研发出可使用红外激光器的阴图型印版、可碱性显影的成象元件(包含在热成象时形成酸的化合物)。例如Haley的美国专利5,372,907公开了对紫外和红外辐射均敏感的辐射敏感组合物。该组合物包含(1)可溶酚醛树脂、(2)线形酚醛树脂、(3)酸生成剂和(4)红外吸收化合物。
在通过紫外辐射成象而生成酸的系统中酸的生成相对有效,而在通过近红外和红外辐射(700nm到3000nm)成象而生成酸的系统中酸的生成效率较低。此外,红外吸收化合物通常具有包含会导致环境污染的卤素和/或重金属(例如砷或锑)的抗衡离子。当已成象的元件在成象后被加热时,会生成强腐蚀性酸(例如盐酸)并释放到大气中。因此,需要一种更为有效的通过红外辐射直接数字成象而形成图象的方法,所述方法不要求包含卤素或重金属的红外吸收化合物。
发明概述
一方面,本发明涉及一种红外吸收化合物。该红外吸收化合物结构为:
结构I
其中:
Y1和Y2各自独立为氢、卤基、烷基、二苯氨基或苯硫基;
R1、R2、R3和R4各自独立为氢、甲基或SO3 -,其附带条件为R1、R2、R3和R4中的两个为SO3 -;
R5和R6各自独立为烷基;
Z1、Z2、Z4和Z5各自独立为稠合苯基或稠合萘基;
Z3和Z6各自独立为两个氢原子、一个环己烯残基或一个环戊烯残基;
X1、X2、X3和X4各自独立为S、O、NH、CH2或C(CH3)2;且
n1和n2各自独立为0到4。
另一方面,本发明涉及包含红外吸收化合物的成象元件。另一方面,本发明涉及一种通过利用红外辐射使成象元件成象并显影已成象的成象元件而形成图象的方法。
当在成象元件中用作光热转化材料时,这些红外吸收化合物提供通过近红外和/或红外辐射直接数字成象而形成图象的有效方法。因为每种化合物包含两个生色团(chromaphores),它们是广谱红外和近红外辐射的有效吸收剂。它们改善成象元件的网点稳定性和敏感度。此外,它们不含卤素和重金属(例如砷或锑)。
附图简述
图1显示对比实施例1和实施例3和4的50%网点随曝光变化的改变。
发明详述
除非上下文指出,否则在说明书和权利要求书中,术语红外吸收化合物、线形酚醛树脂、可溶酚醛树脂、聚合物粘合剂、酸激发交联剂、酸生成剂以及类似的术语包含这类材料的混合物。除非另有说明,否则所有百分数为重量百分数。热成象是指利用热体或红外激光器进行成象。
红外吸收化合物的结构显示于上述结构I中。红外吸收化合物包含吸收红外辐射的阴离子和吸收红外辐射的阳离子。阴离子和阳离子均吸收约700nm到约3000nm,优选约750nm到约1200nm的辐射。阴离子具有两个SO3 -基团。
关于结构I,Y1和Y2各自独立为氢、卤基、烷基、二苯氨基或苯硫基。常见的卤基为氯基和溴基。常见的烷基为1到4个碳原子的烷基,例如甲基、乙基、异丙基、正丙基、叔丁基和正丁基。通常Y1和Y2各自独立为氢、氯基、苯硫基或二苯氨基。
R1、R2、R3和R4各自独立为氢、甲基或SO3 -。R1、R2、R3和R4中的两个为SO3 -,因此阴离子具有两个SO3 -且总电荷为-1。
R5和R6各自独立为烷基。常见的烷基为1到4个碳原子的烷基,例如甲基、乙基、异丙基、正丙基、叔丁基和正丁基。
Z1、Z2、Z4和Z5各自独立为稠合苯基或稠合萘基,即Z1、Z2、Z4和Z5各自独立地代表稠合的苯基部分或稠合的萘基部分。
Z3和Z6各自独立为两个氢原子、一个环己烯残基或一个环戊烯残基。即Z3和/或Z6可各自代表环己烯环或环戊烯环。或者,该化合物可为开链化合物,其中Z3和/或Z6为两个氢原子。在这种情况下,结构表示为-CH=C(Y)-CH=。
X1、X2、X3和X4各自独立为S、O、NH、CH2或C(CH3)2。一般来说,X1、X2、X3和X4各自独立为C(CH3)2。
n1和n2各自独立为0到4,优选1到4。
在一个实施方案中,R1和R2相同;R3和R4相同;R5和R6相同;Z1和Z2相同;Z4和Z5相同;X1和X2相同;X3和X4相同;并且n1和n2相同。
红外吸收化合物可通过将包含所需红外吸收阳离子盐溶液与包含所需红外吸收阴离子盐溶液混合并过滤所得沉淀而制得。包含所需红外吸收阳离子的盐的阴离子通常为例如硫酸根、硫酸氢根或卤离子(例如氯离子或溴离子)。包含所需阴离子的盐的阳离子通常为铵、取代铵(例如三烷基铵或三正丁基铵)、锂、钠或钾。溶剂可为水或包含水和亲水溶剂例如醇的混合物的溶剂。
红外吸收化合物可用作光热转化材料。光热转化材料吸收辐射(通常为红外辐射)并将其转化为热。利用红外辐射成象的成象元件通常包含光热转化材料。虽然光热转化材料不是成象所必需,但包含光热转化材料的成象元件也可以利用热体(例如热位差或热位差阵列)成象。在不包含垫层的热成象元件中,光热转化材料可位于成象层和/或介于成象层和基片之间的独立的吸收剂层。在包含垫层的元件中,光热转化材料可位于成象层和/或垫层和/或介于成象层和垫层之间的独立的吸收剂层。
元件中光热转化材料的数量通常足以在成象波长处提供至少0.05的光密度,优选约0.5到约2的光密度。如本领域技术人员所熟知,生成特定光密度所需的光热转化材料的数量可利用比尔定律(Beer′s law),通过层厚度、光热转化材料在层中的浓度和光热转化材料在用于成象的波长上的吸光系数来确定。
成象元件包含基片表面上的成象组合物层。也可以存在作为成象元件的常规组分的其他层。例如,成象层可位于基片上或其他层上例如垫层或吸收剂层(介于成象层和基片之间)。
成象组合物可以为阴图型印版成象组合物。这些组合物包含红外吸收化合物(也称作光热转化材料)、酸生成剂、酸激发交联剂和聚合物粘合剂。也可以存在作为阴图型印版成象组合物常规成分的其他成分。这些组合物公开于例如Haley的美国专利5,372,907、Nguyen的美国专利5,919,601、Kobayashi的美国专利5,965,319和Busman的美国专利5,763,134中。
酸生成剂是通过热引发分解而产生布朗斯台德酸(Brnsted acid)的前体。非离子酸生成剂包括例如卤代烷基取代的均三嗪,所述均三嗪见述于例如Smith的美国专利3,779,778。卤代烷基取代的均三嗪为1到3个CX3基团取代的均三嗪,其中X为溴基或优选氯基。实例包括2-苯基-4,6-双(三氯甲基)-均-三嗪、2,4,6-三(三氯甲基)-均-三嗪、2-甲基-4,6-双(三氯甲基)-均-三嗪、2-苯乙烯基-4,6-双(三氯甲基)-均-三嗪、2-(对甲氧基苯乙烯基)-4,6-双(三氯甲基)-均-三嗪、2-(4-甲氧基-萘-1-基)-4,6-双(三氯甲基)-均-三嗪、2-(4-乙氧基-萘-1-基)-4,6-双(三氯甲基)-均-三嗪和2-[4-(2-乙氧基乙基)-萘-1-基]-4,6-双(三氯甲基)-均-三嗪。
离子酸生成剂包括例如鎓盐,其中鎓阳离子为碘鎓、锍、鏻、氧基氧化锍(oxysulphoxonium)、氧基锍(oxysulphonium)、氧化锍、铵、重氮、或鉮。阴离子为非亲核阴离子例如四氟硼酸根、六氟磷酸根、六氟砷酸根、六氟锑酸根、三氟甲磺酸根、四(五氟苯基)硼酸根、五氟乙基磺酸根、对甲基苯甲基磺酸根、乙基磺酸根、三氟甲基乙酸根和五氟乙基乙酸根。常见的鎓盐包括例如氯化二苯碘鎓、六氟磷酸二苯碘鎓、六氟锑酸二苯碘鎓、氯化4,4′-二枯基碘鎓、六氟磷酸4,4′-二枯基碘鎓、对甲苯磺酸N-甲氧基-α-甲基吡啶鎓、四氟硼酸4-茴香醚-重氮盐、六氟磷酸4,4′-双(十二烷基苯基)-碘鎓、氯化2-氰乙基-三苯基鏻、双(六氟磷酸)双-[4-二苯基锍基苯基]硫醚、六氟锑酸双-4-十二烷基苯基碘鎓、六氟锑酸三苯基锍、四氟硼酸三苯基锍、2-甲氧基-4-氨基苯基重氮六氟磷酸盐、苯氧基苯基重氮六氟锑酸盐和苯氨基苯基重氮六氟锑酸盐。
特别有用的离子酸生成剂包括碘鎓、锍和重氮盐,其中阴离子为有机硫酸根或硫代硫酸根,例如甲基硫酸根或甲基硫代硫酸根、乙基硫酸根或乙基硫代硫酸根、己基硫酸根或己基硫代硫酸根、辛基硫酸根或辛基硫代硫酸根、癸基硫酸根或癸基硫代硫酸根、十二烷基硫酸根或十二烷基硫代硫酸根、三氟甲基硫酸根或三氟甲基硫代硫酸根、苄基硫酸根或苄基硫代硫酸根、五氟苯基硫酸根或五氟苯基硫代硫酸根。常见的酸生成剂包括例如辛基硫酸二苯碘鎓、辛基硫代硫酸二苯碘鎓、辛基硫酸三苯基锍、对甲苯基硫酸4,4′-二枯基碘鎓、辛基硫酸2-甲氧基-4-(苯氨基)-苯重氮盐、十六烷基硫酸2-甲氧基-4-(苯氨基)-苯重氮盐、十二烷基硫酸2-甲氧基-4-(苯氨基)-苯重氮盐和乙烯基苄基硫代硫酸2-甲氧基-4-(苯氨基)-苯重氮盐。这些酸生成剂可以通过将包含所需阳离子的鎓盐(例如氯化鎓、溴化鎓或硫酸氢鎓)与包含所需阴离子(即所需的烷基或芳基硫酸根或硫代硫酸根)的钠盐或钾盐在水中或包含亲水溶剂如醇的水性溶剂中混合而制备。
酸激发交联剂可以包含至少两种酸激发反应基团,例如连接到芳环上的羟甲基、烷氧基甲基、环氧基和乙烯基醚基。实例包括羟甲基三聚氰胺树脂、可溶酚醛树脂、环氧线形酚醛树脂和尿醛树脂。其他实例为具有至少两个烷氧基甲基的氨基树脂(例如烷氧基甲基化三聚氰胺树脂、烷氧基甲基化甘脲和烷氧基甲基化苯基胍胺)。包含至少两个基团例如羟甲基和/或烷氧基甲基的苯酚衍生物可以在成象时在图象部分提供良好的坚牢度。苯酚衍生物的实例包括可溶酚醛树脂。可溶酚醛树脂包括例如GP649D99resole(Georgia Pacific)和BKS-5928resole resin(Union Carbide)。
线形酚醛树脂通常是通过酚(例如苯酚、间甲酚、邻甲酚和对甲酚等)与醛(例如甲醛、多聚甲醛和乙醛等)或酮(例如丙酮)在酸催化剂的存在下进行缩合而制备。通常采用溶剂缩合方法和热熔缩合方法之一进行缩合。常见的线形酚醛树脂包括例如苯酚甲醛树脂、甲酚甲醛树脂、苯酚甲酚甲醛树脂、对叔丁基苯酚甲醛树脂和连苯三酚丙酮树脂。用于本发明的有用的线形酚醛树脂为从间甲酚和甲醛制得的树脂。
可溶酚醛树脂是通过将酚类化合物与醛在与制备线形酚醛树脂不同的反应条件下反应而制得。可与线形酚醛树脂联用的可溶酚醛树脂的常见实例为从双酚A和甲醛制备得到的可溶酚醛树脂。
用于所述组合物的酸激发交联剂取决于聚合物粘合剂。可以使用能够在成象条件下反应生成交联粘合剂的酸激发交联剂和聚合物粘合剂的任意组合。本领域已知各种聚合物粘合剂和酸激发交联剂的组合。一般来说,所述粘合剂为聚合物或聚合物的混合物,在所述元件加热到约60-220℃时能够与交联剂进行酸催化缩合反应。
例如Haley的美国专利5,372,907公开了对紫外/可见光和红外辐射敏感的辐射敏感组合物。所述组合物包含可溶酚醛树脂和线形酚醛树脂。在这些组合物中,线形酚醛树脂为聚合物粘合剂,可溶酚醛树脂为酸激发交联剂。Nguyen的美国专利5,919,601公开了可通过红外和紫外/可见光辐射成象的辐射敏感组合物。这些组合物包含聚合物粘合剂(包含选自羟基、羧酸、磺酰胺和烷氧基甲酰胺的反应性侧基)和可溶酚醛树脂、C1-C5烷氧基甲基三聚氰胺或甘脲树脂、聚(C1-C5烷氧基甲基苯乙烯)、聚(C1-C5烷氧基甲基丙烯酰胺)、它们的衍生物或它们的组合。所述交联树脂优选为从C1-C5烷基苯酚和甲醛制得的可溶酚醛树脂、四(C1-C5烷氧基)甘脲、4-甲氧基甲基苯乙烯的聚合物、N-甲氧基甲基丙烯酰胺的聚合物、N-异丁氧基甲基丙烯酰胺的聚合物或丁基化的酚醛树脂。Kobayashi的美国专利5,965,319公开了阴图型印版记录材料,所述记录材料包含酸激发交联剂,优选具有至少两个连接到苯环的羟甲基或烷氧基甲基和具有碱溶基团的聚合物如线形酚醛树脂。常见的交联剂为包含羟甲基的酚醛树脂,所述酚醛树脂是通过酚与甲醛缩合反应而制得。Busman的美国专利5,763,134公开了可激发交联剂,例如1,3,5-三羟甲基苯、1,3,5-三乙酰氧基甲基苯和1,2,4,5-四乙酰氧基甲基苯。其他的聚合物粘合剂和酸激发交联剂为本领域技术人员所熟知。
成象组合物也可以包含其他的成分例如作为成象组合物常规成分的染料和表面活性剂。表面活性剂可以作为例如涂覆助剂存在于成象组合物中。染料的存在有助于已曝光和/或已显影元件的目视检查。印出的染料在冲印过程中用来区别已曝光区和未曝光区。对比染料用来区别已显影的成象元件的未成象部分和已成象部分。优选染料不吸收成象辐射。三芳基甲烷染料,例如乙基紫、结晶紫、孔雀绿、亮绿、维多利亚蓝B、维多利亚蓝R、维多利亚纯蓝BO和D11可以用作对比染料。
阴图型印版成象组合物通常包含基于组合物总重的约0.1到10%重量,更优选约0.5到10%重量的红外吸收化合物(光热转化材料)。成象组合物通常包含基于组合物总重的约0.01到50%重量,优选约0.1到25%重量,且更优选约0.5到20%重量的酸生成剂。成象组合物通常包含基于组合物总重的约5到70%重量,优选约10到65%重量的交联剂。成象组合物通常包含基于组合物总重的约10到90%重量,优选约20到85%重量,且更优选约30到80%重量的聚合物。
红外吸收化合物可在阳图型印版成象组合物中用作光热转化材料。已知阳图型印版热成象元件,其中成象组合物包含聚合物材料和溶解抑制剂。所述聚合物材料为不溶于水但溶于碱的粘合剂,例如如上所述通常为酚醛树脂如线形酚醛树脂。所述溶解抑制剂被认为对约600nm到约800nm或约800nm到约1200nm的辐射不具有感光活性,所述辐射通常用于热成象元件的成象。所述元件通常在成象层和基片之间包含垫层。光热转化材料可存在于成象层、垫层或介于成象层和垫层(如果存在)之间的独立的吸收剂层或介于成象层和基片之间(如果不存在垫层)。此类系统公开于例如Parsons的美国专利6,280,899、Shimazu的美国专利6,294,311和美国专利6,352,812以及Savariar-Hauck的美国专利6,358,669。
用于溶解抑制剂的有用的极性基团包括例如重氮基(diazo),重氮鎓基(diazonium),酮基,磺酸酯基,磷酸酯基,三芳基甲烷基团,鎓基如锍、碘鎓和鏻,氮原子加入杂环的基团,包含正电荷原子、特别是正电荷氮原子(通常为季氮原子即铵基)的基团。用作溶解抑制剂的包含正电荷(即季铵化)氮原子的化合物包括例如四烷基铵化合物、喹啉鎓化合物、苯并噻唑鎓(benzothiazolium)化合物、吡啶鎓化合物和咪唑鎓化合物。包含其他极性基团如醚、胺、偶氮、硝基、二茂铁、亚砜、砜和二砜的化合物也可以用作溶解抑制剂。
季铵化杂环化合物可以用作溶解抑制剂。代表性的咪唑鎓化合物包括Monazoline C(椰子酸咪唑啉(cocoate imidazoline))、MonazolineO(油酸咪唑啉)和Monazoline T(妥尔油咪唑啉)(得自Uniqema,Wilmington,DE,USA)。代表性的喹啉鎓溶解抑制剂包括碘化1-乙基-2-甲基喹啉鎓、碘化1-乙基-4-甲基喹啉鎓和包含喹啉鎓部分的花青染料例如2-甲基喹啉(Quinoldine)蓝。代表性的苯并噻唑鎓(benzothiazolium)化合物包括3-乙基-2(3H)-苯并噻唑亚基-2-甲基-1-(丙烯基)苯并噻唑鎓阳离子染料和碘化3-乙基-2-甲基苯并噻唑鎓。合适的吡啶鎓溶解抑制剂包括溴化十六烷基吡啶鎓和乙基紫罗碱二阳离子。用作溶解抑制剂的重氮盐包括例如取代和未取代的二苯胺重氮盐如甲氧基取代六氟硼酸二苯胺重氮。
优选的溶解抑制剂为三芳基甲烷染料,例如乙基紫、结晶紫、孔雀绿、亮绿、维多利亚蓝B、维多利亚蓝R和维多利亚蓝BO。这些化合物也可以用作对比染料用于区别已显影的成象元件中的已成象区和未成象区。所述溶解抑制剂可以为包含如上所述的邻重氮萘醌部分的单体化合物和/或聚合化合物。
当溶解抑制剂存在于成象层中时,它通常占层干重的至少约0.1%重量,典型为约0.5%重量到约30%重量,优选约1%重量到15%重量。
成象层中的聚合物材料可作为选择地包含或另外还包含极性基团作为与聚合物材料中的羟基成键的氢原子的受体点,并由此同时用作聚合物材料和溶解抑制剂。羟基的衍生作用增大了聚合物材料的分子量并减小了羟基的数目,通常是减小了聚合物材料在显影液中的溶解度和溶解速率。尽管聚合物材料用作溶解抑制剂需要保持高水平的衍生作用是很重要的,但是所述衍生作用不应太高以使得在热成象后聚合物材料不溶解于显影液中。酚醛树脂与包含重氮萘醌部分的化合物的衍生作用为已知且见述于例如West的美国专利5,705,308和5,705,322。
尽管所要求的衍生程度将取决于聚合物材料的属性和包含引入聚合物材料的极性基团的部分的属性,但通常被衍生的羟基占约0.5%摩尔到约5%摩尔,优选约1%摩尔到约3%摩尔。这些衍生聚合物材料可以单独使用于成象层或它们可以与其他聚合物材料和/或溶解抑制剂合用。
一组包含极性基团和用作溶解抑制剂的聚合物材料为衍生化的酚醛聚合物材料,其中一部分酚羟基已经转换为磺酸酯,优选苯磺酸酯或对甲苯磺酸酯。衍生作用可以通过聚合物材料与例如磺酰氯如对甲苯磺酰氯在碱如叔胺的存在下反应而进行。有用的材料为线形酚醛树脂,其中约1%摩尔到3%摩尔,优选约1.5%摩尔到约2.5%摩尔的羟基已经转换为苯磺酸酯或对甲苯磺酸酯基团(甲苯磺酰基)。
本领域技术人员将理解尽管用极性基团衍生化的酚醛聚合物(例如聚合物中的某些羟基已经用磺酸酯基团或包含重氮萘醌部分的基团进行衍生化)可溶于含水碱性显影液,包含一种或多种这些材料或由一种或多种这些材料组成的层“不溶于”含水碱性显影液。这是由于层的溶解度和不溶解性是由层的已成象和未成象区被显影液脱除的相对速度决定。包含一种或多种这些衍生化酚聚合物材料或基本由一种或多种这些材料组成的层的热成象之后,层的已成象区相对未成象区而言被含水碱性显影液脱除的速率更快。如果显影进行适当的时间,则已成象区被脱除而未成象区被保留,因此形成由未成象区构成的图象。因此已成象区在显影液中“可脱除”或“可溶解”而未成象区在显影液中“不可脱除”或“不可溶解”。
当成象元件包含垫层,则垫层中的聚合物材料优选可溶解于碱性显影液。此外,所述聚合物材料优选不溶解于用于涂覆成象层的溶剂中,以使成象层可涂覆在垫层上而不溶解垫层。用于垫层的聚合物材料包括那些包含酸和/或酚官能团的材料以及这些材料的混合物。有用的聚合物材料包括羧基官能的丙烯酸、乙酸乙烯酯/巴豆酸酯/新癸酸乙烯酯共聚物、苯乙烯马来酐共聚物、酚醛树脂、马来酸化木松香(maleated wood rosin)和它们的组合。能够耐受润版液和腐蚀性洗涤剂的垫层见述于Shimazu的美国专利6,294,311中。
特别有用的聚合物材料为包含N-取代马来酰亚胺类特别是N-苯基马来酰亚胺、聚乙烯醇缩乙醛类、甲基丙烯酰胺类特别是甲基丙烯酰胺以及丙烯酸和/或甲基丙烯酸特别是甲基丙烯酸的共聚物。更优选聚合物材料具有两个官能基团且最优选聚合物材料总共具有三个官能基团。优选的这种类型的聚合物材料为N-苯基马来酰亚胺、甲基丙烯酰胺和甲基丙烯酸的共聚物,这些材料更优选包含约25到约75%摩尔,最好约35到约60%摩尔的N-苯基马来酰亚胺、约10到约50%摩尔,优选约15到约40%摩尔的甲基丙烯酰胺和约5到约30%摩尔,优选约10到约30%摩尔的甲基丙烯酸。其他亲水单体例如甲基丙烯酸羟乙基酯可以替代某些或全部甲基丙烯酰胺。其他的碱溶性单体例如丙烯酸可以替代某些或全部甲基丙烯酸。
另一组优选的用于垫层中的聚合物材料为可溶解于碱性显影液的共聚物,所述共聚物包含侧链有脲键(即脲侧基)的单体,例如见述于Ishizuka的美国专利5,731,127。这些共聚物包含约10到80%重量,优选约20到80%重量的一种或多种由以下通式表示的单体:
CH2=C(R)-CO2-X-NH-CO-NH-Y-Z,
其中R为-H或-CH3;X为二价连接基;Y为已取代或未取代的二价芳基;Z为-OH、-COOH或-SO2NH2。
R优选为-CH3。优选X为已取代或未取代的亚烷基、已取代或未取代的亚苯基[-(C6H4)-]或已取代或未取代的萘基[-(C10H6)-];例如-(CH2)n-,其中n为2到8;1,2-、1,3-和1,4-亚苯基;1,4-、2,7-和1,8-亚萘基。更优选X为未取代且甚至更优选n为2或3;最优选X为-(CH2CH2)-。优选Y为已取代或未取代的亚苯基或者已取代或未取代的亚萘基;例如1,2-、1,3-和1,4-亚苯基;1,4-、2,7-和1,8-亚萘基。更优选Y为未取代,最优选未取代的1,4-亚苯基。Z为-OH、-COOH或-SO2NH2,优选-OH。
优选的单体为:
CH2=C(CH3)-CO2-CH2CH2-NH-CO-NH-p-C6H4-Z,
其中Z为-OH、-COOH或-SO2NH2,优选-OH。
在共聚物的合成中,可以使用一种或多种包含脲基的单体。所述共聚物也包含20到90%重量的其他可聚合单体,例如马来酰亚胺、丙烯酸、甲基丙烯酸、丙烯酸酯、甲基丙烯酸酯、丙烯腈、甲基丙烯腈、丙烯酰胺和甲基丙烯酰胺。包含高于60%摩尔且不大于90%摩尔的丙烯腈和/或甲基丙烯腈(除丙烯酰胺和/或甲基丙烯酰胺之外)的共聚物具有优良的物理性质。更优选碱溶共聚物包含30到70%重量的包含脲基的单体;20到60%重量的丙烯腈或甲基丙烯腈,优选丙烯腈;和5到25%重量的丙烯酰胺或甲基丙烯酰胺,优选甲基丙烯酰胺。
另一组可用于垫层的聚合物材料包括可溶于碱性显影液的包含约10到90%摩尔的磺酰胺单体单元的共聚物,特别是包含N-(对氨基磺酰基苯基)甲基丙烯酰胺、N-(间氨基磺酰基苯基)甲基丙烯酰胺、N-(邻氨基磺酰基苯基)甲基丙烯酰胺和/或相应的丙烯酰胺的共聚物。包含侧磺酰胺基的可溶解于碱性显影液的有用的聚合物材料、它们的制备方法和制备所用的单体见述于Aoshima的美国专利5,141,838的文献。特别有用的聚合物材料包含(1)磺酰胺单体单元,特别是N-(对氨基磺酰基苯基)甲基丙烯酰胺;(2)丙烯腈和/或甲基丙烯腈;和(3)甲基丙烯酸甲酯和/或丙烯酸甲酯。
红外吸收化合物(光热转化材料)可位于成象层、独立的吸收剂层和/或垫层。当存在吸收剂层时,它介于成象层和基片之间。当也存在垫层时,吸收剂层介于成象层和垫层之间。吸收剂层优选基本由光热转化材料和任选的表面活性剂组成。光热转化材料如果存在于独立的吸收剂层而非存在于垫层和/或成象层,则可使用较少的用量。当存在吸收剂层时,成象层优选基本不含光热转化材料,即成象层优选不吸收用于成象的辐射(常见的800nm到1200nm的辐射)。吸收剂层优选具有足以吸收至少90%,优选至少99%的成象辐射的厚度。一般来说,吸收剂层的涂层重为约0.02g/m2到约2g/m2,优选约0.05g/m2到约1.5g/m2。如上所述,元件中的光热转化材料的量通常足以在成象波长处提供至少0.05的光密度,优选约0.5到约2的光密度。
成象组合物可涂覆在各种基片上。具体的基片一般由预定的用途来确定。对平版印刷而言,所述基片包含载体,所述载体可为通常用于制备用作平版印版的成象元件的任何材料。所述载体优选为坚固、稳定且柔韧的材料。它应该能够在使用条件下耐受尺寸变化以使颜色记录信息与彩色图象迭合。通常它可以为任何自载体材料包括例如聚合物膜如聚对苯二甲酸乙二醇酯膜、陶瓷、金属或硬纸或任何这些材料的层叠。金属载体包括铝、锌、钛和它们的合金。
通常聚合膜于一侧或两侧表面包含内涂层以修改表面属性来提高表面的亲水性、改进对后续层的粘合力和改进纸质基片的平面度等。这种层的属性取决于基片和后续涂覆层的组成。内涂层材料的实例为粘合促进材料例如烷氧基硅烷、氨基丙基三乙氧基硅烷、缩水甘油氧基丙基三乙氧基硅烷和环氧官能聚合物以及用于照相胶片的聚酯基材的常规内涂层材料。
铝载体的表面可以采用本领域已知的技术包括物理磨版、电化学磨版、化学磨版和阳极化的技术进行处理。所述基片应具有足够的厚度以承受印刷的磨损并且应足够薄以卷绕于印刷版上,通常为约100到约600μm。通常所述基片包含铝载体和成象组合物层之间的夹层。所述夹层可以通过用例如硅酸盐、糊精、六氟硅酸、磷酸盐/氟化物、聚乙烯膦酸(PVPA)或乙烯基膦酸共聚物处理载体而形成。
基片的背面(即垫层和成象组合物层的相反面)可以用抗静电剂和/或滑动层或粗糙层涂覆以改善处理和成象元件的“质感”。通常成象层的涂层重约0.5到约4g/m2,优选0.8到3g/m2。
成象元件可以通过使用常规技术顺序地将垫层覆盖于基片的亲水表面、将吸收剂层或阻挡层(如果存在)覆盖于垫层并随后覆盖成象层而制备。
术语“溶剂”和“涂覆溶剂”包括溶剂的混合物。尽管某些或所有材料可悬浮或分散于溶剂而不是溶液中,但同样可以使用这些术语。涂覆溶剂的选择取决于各种层中存在的组分的属性。
所述垫层可以通过任何常规方法例如涂覆或层叠的方法来覆盖。通常各成分分散或溶解于合适的涂覆溶剂中,所得的混合物通过常规方法进行涂覆,例如旋涂、绕线棒刮涂、凹版涂布、口模式涂布或辊涂。
成象层被涂覆到基片或垫层(如果存在)。如果存在垫层,为防止这些层被溶解和混合,所述成象层应该利用基本不溶解垫层的溶剂进行涂覆。因此成象层的涂覆溶剂应为成象层各组分能够充分溶解于其中以形成成象层而基本不溶解任何垫层的溶剂。一般来说,用于涂覆垫层的溶剂相对用于涂覆成象层的溶剂而言具有更强的极性。可以采用中间干燥步骤,即干燥垫层(如果存在)以在涂覆成象层于其上之前脱除涂覆溶剂以避免层的混合。或者,垫层、成象层或两种层可以通过常规的挤压涂敷方法用各层组分的熔融混合物进行涂覆。一般来说,此类熔融混合物不包含任何挥发性有机溶剂。
热成象可通过已知的方法进行。所述元件可以利用激光器或激光器阵列进行热成象,所述激光器或激光器阵列发射出位于成象元件的吸收波长区间的调制近红外或红外辐射。红外辐射特别是约800nm到约1200nm,常见为830nm或1064nm的红外辐射通常用于热成象元件的成象。利用在约830nm或约1064nm发射的激光器方便地进行成象。合适的市售成象装置包括图文影排机例如CreoTrendsetter(CREO)和Gerber Crescent 42T(Gerber)。
或者,所述成象元件可以利用热体进行热成象,例如包含热敏打印头的常规设备。合适的成象设备包含至少一个热位差但通常包含热位差阵列,例如用于热敏传真机和升华印刷机的TDK LV5416型或GS618-400thermal plotter(热绘图器)(Oyo Instruments,Houston,TX,USA)。
成象后,可以加热已成象的成象元件。这个任选的加热步骤可以通过利用辐射、对流、与热表面接触(如与辊轴接触)或浸入包含惰性液体(例如水)的热浴而进行。优选将已成象的成象元件在烘箱中加热。
加热温度通常通过成象元件的灰雾点来确定。灰雾点定义为在两分钟的加热时间内导致热成象元件无法显影的所需的最低温度。对包含酸生成剂的阴图型印版元件而言,温度为低于两分钟的加热时间的灰雾点约28℃(约50°F)或更小,优选为低于两分钟的加热时间的灰雾点约17℃(约30°F)或更小且最优选为低于两分钟的加热时间的灰雾点约8℃(15°F)。通常加热温度为约110℃到约150℃(约230°F到约300°F)。加热时间可以大范围变化,取决于所选择的加热方法以及方法中的其他步骤。如果使用导热介质,则加热时间将优选为约30秒到约30分钟,更优选为约1分钟到约5分钟。当已成象的成象元件在烘箱中加热时,所述加热时间优选为约1分钟到约5分钟。
成象产生已成象的元件,所述元件包含已成象和互补的未成象区的潜象。已成象元件的形成印版或印刷表单的显影通过移除已成象区或未成象区,并暴露下方基片的亲水表面的方法将潜象转化为图象。
显影液可为任何液体或溶液,所述液体或溶液能够渗透并脱除成象层的不需要的区域而基本上不影响互补区。合适的显影液取决于成象元件中存在的成分的溶解性。
显影液的常见组分为表面活性剂、螯合剂(例如乙二胺四乙酸盐)、有机溶剂(例如苯甲醇和苯氧乙醇)和碱性组分(例如无机硅酸盐、有机硅酸盐、氢氧化物或碳酸氢盐)。常见的表面活性剂为:烷基萘磺酸的碱金属盐、通常具有6到9个碳原子的脂族醇的硫酸单酯碱金属盐、通常具有6到9个碳原子的磺酸碱金属盐。显影液也可以包含缓冲体系以保持pH相对恒定。本领域技术人员已知多种缓冲体系。常见的缓冲体系包括例如:水溶性胺(例如单乙醇胺、二乙醇胺、三乙醇胺或三异丙胺)与磺酸(例如苯磺酸或4-甲苯磺酸)的组合、乙二胺四乙酸(EDTA)四钠盐与EDTA的混合物、磷酸盐的混合物(例如磷酸单碱金属盐与磷酸三碱金属盐的混合物)和硼酸碱金属盐和硼酸的混合物。显影液的余量通常由水构成。
高pH显影液通常用于阳图型印版成象元件,而溶剂基的显影液通常用于阴图型印版成象元件。当成象层包含酚聚合物例如线形酚醛树脂时,高pH显影液也可以令人满意地用于阴图型印版成象元件。高pH显影液的pH通常为至少约11,更常见为至少约12,优选为约12到约14。
高pH显影液包含至少一种碱金属硅酸盐,例如硅酸锂、硅酸钠和/或硅酸钾。优选硅酸钠和硅酸钾,且最优选硅酸钾。如果需要可以使用碱金属硅酸盐的混合物。特别优选高pH显影液包含具有SiO2/M2O重量比为至少约0.3的碱金属硅酸盐,其中M为碱金属。该比率优选为约0.3到约1.2,更优选为约0.6到约1.1且最优选为约0.7到约1.0。
高pH显影液中碱金属硅酸盐的量通常为至少20g SiO2/1000g显影液(也就是说至少约2%重量)且优选约20g到80g SiO2/1000g显影液(也就是说约2%重量到约8%重量)。更优选为约40g到65gSiO2/1000g显影液(也就是说约4%重量到约6.5%重量)。
除碱金属硅酸盐之外,碱度可通过合适浓度的任何适宜的碱来提供,例如氢氧化铵、氢氧化钠、氢氧化锂和/或氢氧化钾。优选的碱为氢氧化钾。高pH显影液的任选组分为阴离子、非离子和两性表面活性剂(最多为组合物总重的3%)、杀虫剂(抗菌或抗真菌剂)、消泡剂或螯合剂(例如碱金属葡萄糖酸盐)和增稠剂(水溶性或水分散性多羟基化合物例如甘油或聚乙二醇)。然而这些显影液通常不包含有机溶剂。常见的市售高pH显影液包括:GoldstarTM Developer、ProThermTMDeveloper、4030Developer、PD-1Developer和MX Developer,所有这些显影液均得自Kodak Polychrome Graphics,Norwalk,CT,USA。
溶剂基碱性显影液包含有机溶剂或各种有机溶剂的混合物。所述显影液为单相。因此所述有机溶剂或各种有机溶剂混合物必须混溶于水或充分溶解于显影液中而不出现相分离。下列溶剂和它们的混合物适用于显影液:苯酚与环氧乙烷和环氧丙烷的反应产物例如乙二醇苯基醚(苯氧乙醇)、苯甲醇、乙二醇和丙二醇与具有6个或以下碳原子的酸的酯、乙二醇,二甘醇和丙二醇与具有6个或以下碳原子的烷基的醚,例如2-乙氧基乙醇和2-丁氧基乙醇。可以使用单一的有机溶剂或各种有机溶剂的混合物。所述有机溶剂在显影液中的浓度通常为基于显影液重量的约0.5%重量到约15%重量,优选为基于显影液重量的约3%重量到约5%重量。常见的市售溶剂基显影液包括956Developer和955Developer(得自Kodak PolychromeGraphics,Norwalk,CT,USA)。
显影液通常通过用足够强的力喷雾所述元件以移除已成象区而涂覆到已成象的前驱体上。或者,显影可以在配备有浸入型显影浴、水漂洗段、涂胶段、干燥段和电导率测量装置的处理器中进行或者已成象的前驱体可以用显影液涂刷。在每种情况下,制备出一个印版。显影可以便利地在市售喷雾处理器中进行,例如85NS(KodakPolychrome Graphics)。
显影后,将印版用水漂洗并干燥。干燥可以方便地通过红外辐射器或热空气进行。干燥后,所述印版可以用胶水处理。胶水包含一种或多种水溶性聚合物,例如聚乙烯醇、聚甲基丙烯酸、聚甲基丙烯酰胺、聚甲基丙烯酸羟乙酯、聚乙烯基甲基醚、明胶和多糖例如右旋糖酐、支链淀粉、纤维素、阿拉伯树胶和海藻酸。优选的材料为阿拉伯树胶。
已显影和涂胶的印版也可以进行烘焙以提高印版的行程。烘焙可以在例如约220℃到约240℃下进行约7到10分钟或在约120℃下进行约30分钟。
工业应用性
红外吸收化合物可用作成象元件中的光热转化材料。成象元件用于光掩膜平版印刷、刻印平版印刷、微电子和微光学装置、制备印刷电路板的光致抗蚀剂和制备平版印版前驱体。当成象元件用于制备平版印版时,网点具有高稳定性。
成象元件特别可用于制备平版印版前驱体。一旦成象元件经过成象和显影以形成平版印版或印刷表单,则可通过涂覆润版液并随后将平印油墨涂覆到表面的图象上而进行印刷。所述润版液被未成象区(即通过成象和显影过程所暴露的亲水基片的表面)吸收,而油墨被已成象区(即未被显影过程所移除的成象组合物层的区)吸收。所述油墨随后直接或间接使用胶印橡皮布迁移到合适的接收材料(例如布料、纸、金属、玻璃或塑料)以提供所要求的图象的印刷。
本发明的优点属性可以通过参考下列实施例而显现,所述实施例用于阐述而非限制本发明。
实施例
在实施例中,“涂覆溶液”是指溶剂或多种溶剂以及涂覆添加剂的混合物,甚至尽管某些添加剂可能是以悬浮液状态而非以溶液状态存在。除非另有说明,否则所表示的百分数为基于涂覆溶液中固体总量的重量百分数。
词汇
BYK 307:聚乙氧基化二甲基聚硅氧烷共聚物(Byk Chemie,Wallingford,CT,USA)
BYK 333:聚醚改性二甲基聚硅氧烷共聚物(Byk Chemie,Wallingford,CT,USA)
D11:N-[4-[[4-(二乙氨基)苯基][4-(乙氨基)-1-萘基]亚甲基]-2,5-环己二烯-1-亚基]-N-乙基-乙铵,与5-苯甲酰基-4-羟基-2-甲氧基苯磺酸(1∶1)成盐;着色染料(见下述结构)(PCAS,Longjumeau,France)
DOWANOLPM:丙二醇甲醚(1-甲氧基-2-丙醇)(Dow,Midland,MI,USA)
IR Dye 66e:氯化2-[2-[3-[(1,3-二氢-1,3,3-三甲基-2H-吲哚-2-亚基)亚乙基]-2-(苯硫基)-1-环己烯-1-基]乙烯基]-1,3,3-三甲基-3H-吲哚鎓,λmax=788nm(FEW,Wolfen,Germany)
IR Dye A:红外吸收化合物(见下述结构)(Eastman Kodak,Rochester,NY,USA)
MSOS:辛基硫酸2-甲氧基-4-(苯氨基)重氮苯,一种酸生成剂
N-13:线形酚醛树脂,100%间甲酚,MW 13,000(Eastman KodakRochester,NY,USA)
ProThermTM:碱性含水正片显影液(Kodak Polychrome Graphics,Norwalk,CT,USA)
可溶酚醛树脂:Resole resin GP649D99(Georgia-Pacific,Atlanta,GA,USA)
实施例1
本实施例阐述制备2-[2-[2-氯-3-[(1,3-二氢-1,3,3-三甲基-2H-吲哚-2-亚基)亚乙基]-1-环己烯-1-基]乙烯基]-1,3,3-三甲基-3H-吲哚鎓与2-[2-[2-氯-3-[(1,3-二氢-1,1,3-三甲基-7-磺基-2H-苯并[e]吲哚-2-亚基)亚乙基]-1-环己烯-1-基]乙烯基]-1,1,3-三甲基-7-磺基-1H-苯并[e]吲哚鎓内盐所成的盐(化合物1),一种本发明的红外吸收化合物。
化合物1
将5.6g溴化2-[2-[2-氯-3-[(1,3-二氢-1,3,3-三甲基-2H-吲哚-2-亚基)亚乙基]-1-环己烯-1-基]乙烯基]-1,3,3-三甲基-3H-吲哚鎓(HoneywellSpecialty Chemicals,Morristown,NJ,USA)溶于100g水和100gDOWANOLPM中(溶液A)。将9.3g N,N-二丁基-1-丁胺化合物与2-[2-[2-氯-3-[(1,3-二氢-1,1,3-三甲基-7-磺基-2H-苯并[e]吲哚-2-亚基)亚乙基]-1-环己烯-1-基]乙烯基]-1,1,3-三甲基-7-磺基-1H-苯并[e]吲哚内鎓盐(Eastman Kodak,Rochester,NY<USA)溶于100g水和300gDOWANOLPM中(溶液B)。将溶液A缓慢加入溶液B并搅拌。随后加入600g水以形成沉淀。将反应混合物再搅拌10分钟并在室温下存放于暗处2小时。沉淀通过过滤收集并用50ml丙酮洗涤然后在室温下干燥12小时。产量:13.0g。
H NMR(DMSO-d6):δ1.67(12H,s)、1.88(4H,br)、1.95(12H,s)、2.74(8H,m)、3.69(6H,s)、3.81(6H,s)、6.32(4H,m)、7.20-8.50(22H,m)。
实施例2
本实施例阐述制备2-[2-[3-[(1,3-二氢-1,3,3-三甲基-2H-吲哚-2-亚基)亚乙基]-2-(苯硫基)-1-环己烯-1-基]乙烯基]-1,3,3-三甲基-3H-吲哚鎓与2-[2-[2-氯-3-[(1,3-二氢-1,1,3-三甲基-7-磺基-2H-苯并[e]吲哚-2-亚基)亚乙基]-1-环己烯-1-基]乙烯基]-1,1,3-三甲基-7-磺基-1H-苯并[e]吲哚内鎓盐所成的盐(化合物2),一种本发明的红外吸收化合物。
化合物2
将0.60g IR Dye 66e溶于10g水和10g DOWANOLPM中(溶液C)。将0.93g N,N-二丁基-1-丁胺化合物与2-[2-[2-氯-3-[(1,3-二氢-1,1,3-三甲基-7-磺基-2H-苯并[e]吲哚-2-亚基)亚乙基]-1-环己烯-1-基]乙烯基]-1,1,3-三甲基-7-磺基-1H-苯并[e]吲哚内鎓盐(Eastman Kodak,Rochester,NY,USA)溶于10g水和30g DOWANOLPM中(溶液D)。将溶液C缓慢加入溶液D并搅拌。随后加入60g水以形成沉淀。将反应混合物再搅拌10分钟并在室温下存放于暗处3小时。沉淀通过过滤收集并用50ml丙酮洗涤然后在室温下干燥12小时。产量:0.93g。
H NMR(丙酮-d6):δ1.41(12H,s)、1.90(4H,br)、1.95(12H,s)、2.76(8H,m)、3.64(6H,s)、3.81(6H,s)、6.34(4H,m)、7.00-8.70(27H,m)。
对比实施例1
将6.8g包含25%可溶酚醛树脂的DOWANOLPM溶液、8.56g包含34%N-13的丙酮溶液、0.60g MSOS、0.471g IR dye A、0.07g D11、49.06g 1-甲氧基-2-丙醇中的0.21g 10%BYK 307和0.05g 10%BYK333、32.9g N,N-二甲基甲酰胺、0.94g水和0.34g丙酮混合制备涂覆溶液。将上述溶液涂布到经过电化学磨版和阳极化并用聚乙烯基膦酸(PVPA)后处理的铝基片上,干涂层重为约1.4g/m2(约130mg/ft2)并将所述基片在滚筒上在88℃(190°F)下干燥约2分钟。
所得的成象元件在CREOTrendsetter 3244x image setter(CreoScitex,Burnaby,British Columbia,Canada)中,在830nm(功率为5.5W)和滚筒速度为96到250rpm(50到130mJ/cm2)条件下成象。将已成象的成象元件在约133℃(约271°F)用Heavy Duty Oven(Wisconsin Oven Corp.,East Troy,WI,USA)预热约2分钟并在加载有25℃的ProThermTM developer的Unigraph Quartz K85 processor(Glunz& Jensen,Elkwood,VA,USA)中显影。
获得最大已显影密度的最小曝光能为约70mJ/cm2。在曝光剂量范围内的50%点形网屏的稳定性见图1所示。
实施例3
将6.8g包含25%可溶酚醛树脂的DOWANOLPM溶液、8.56g包含34%N-13的丙酮溶液、0.60g MSOS、0.383g实施例1制备的红外吸收化合物、0.07g D11、49.15g 1-甲氧基-2-丙醇中的0.21g 10%BYK307和0.05g 10%BYK 333、32.9g N,N-二甲基甲酰胺、0.94g水和0.34g丙酮混合制备涂覆溶液。将所述溶液涂布到对比实施例1的基片上,并将所得的成象元件在滚筒上在88℃(190°F)下干燥约2分钟。干涂层重为约1.4g/m2(约130mg/ft2)。
将所得的成象元件按对比实施例1所述方法成象和显影。获得最大已显影密度的最小曝光能为约70mJ/cm2。在曝光剂量范围内的50%点形网屏的稳定性见图1所示。
实施例4
将6.8g包含25%可溶酚醛树脂的DOWANOLPM溶液、8.56g包含34%N-13的丙酮溶液、0.60g MSOS、0.408g实施例2制备的红外吸收化合物、0.07g D11、49.15g 1-甲氧基-2-丙醇中的0.21g 10%BYK307和0.05g 10%BYK 333、32.9g N,N-二甲基甲酰胺、0.94g水和0.34g丙酮混合制备涂覆溶液。将所述溶液涂布到对比实施例1的基片上,并将所得的成象元件在滚筒上在88℃(190°F)下干燥约2分钟。干涂层重为约1.4g/m2(约130mg/ft2)。
将所得的成象元件按对比实施例1所述方法成象和显影。获得最大已显影密度的最小曝光能为约70mJ/cm2。在曝光剂量范围内的50%点形网屏的稳定性见图1所示。
实施例5
本实施例阐述合成辛基硫酸2-甲氧基-4-(苯氨基)-重氮苯(MSOS),一种酸生成剂。
将64.0g 35%辛基硫酸钠(Aldrich,Milwaukee,W1,USA)水溶液缓慢加入31.0g硫酸氢2-甲氧基-4-(苯氨基)-重氮苯(Diverstec,FortCollins,CO,USA)于500ml水的溶液中并搅拌。将所得混合物在0-5℃下存放于暗处5小时。将水倾出后,将所得的油溶于200ml乙酸乙酯中。将所得溶液用50ml 5%碳酸氢钠水溶液和50ml水洗涤。有机层用无水硫酸镁干燥6小时并真空脱除溶剂。制得35.1g油。
H NMR(丙酮-d6):δ0.84(3H,t)、1.22(10H,m)、1.53(2H,p)、3.88(2H,t)、4.10(3H,s)、6.50-7.60(7H,m)、8.17(1H,d)和10.9(1H,s)。
经过描述本发明,我们现在提出如下权利要求及其同等要求。
Claims (10)
2.权利要求1的化合物,其中所述Z3和Z6各自为一个环己烯残基或一个环戊烯残基,且n1和n2各自独立为1到4。
3.权利要求1或权利要求2的化合物,其中所述Y1和Y2各自为氢、氯基、苯硫基或二苯氨基。
4.权利要求1到3中任一项的化合物,其中所述R5和R6各自独立为1到4个碳原子的烷基。
5.权利要求1到4中任一项的化合物,其中所述R1和R2相同;R3和R4相同;R5和R6相同;Z1和Z2相同;Z4和Z5相同;X1和X2相同;X3和X4相同;并且n1和n2相同。
6.一种成象元件,所述成象元件包含基片上的成象层,其中所述成象层包含成象组合物,所述成象元件包含权利要求1到5中任一项的红外吸收化合物。
7.权利要求6的成象元件,其中所述成象组合物包含红外吸收化合物、酸生成剂、酸激发交联剂和聚合物粘合剂。
8.权利要求6的成象元件,其中所述成象元件还包含介于成象层和基片之间的垫层,所述成象层包含酚醛树脂和溶解抑制剂。
9.权利要求8的成象元件,其中所述红外吸收化合物位于垫层或介于成象层和垫层之间的吸收剂层中。
10.一种形成图象的方法,所述方法包括以下步骤:
(a)将权利要求6到9中任一项的成象元件热成象并形成包括已成象区和互补的未成象区的已成象的成象元件;且
(b)将所述已成象的成象元件显影并脱除已成象区或未成象区以形成图象。
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-
2003
- 2003-01-27 US US10/353,106 patent/US6790590B2/en not_active Expired - Fee Related
-
2004
- 2004-01-20 CN CN200480008191.0A patent/CN1771299A/zh active Pending
- 2004-01-20 WO PCT/US2004/001589 patent/WO2004069938A1/en active IP Right Grant
- 2004-01-20 EP EP04703685A patent/EP1587880B1/en not_active Expired - Lifetime
- 2004-01-20 DE DE602004003030T patent/DE602004003030T2/de not_active Expired - Lifetime
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
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CN102036821B (zh) * | 2008-05-22 | 2012-12-12 | 伊斯曼柯达公司 | 成像和显影正性工作可成像元件的方法 |
CN104040429A (zh) * | 2011-12-14 | 2014-09-10 | 国际商业机器公司 | 用于光刻法应用的近红外线吸收膜组合物 |
CN107207433A (zh) * | 2015-01-09 | 2017-09-26 | 车医科学大学校产学协力团 | 新的有机化合物,含有该化合物的近红外荧光造影剂以及用于制备纳米颗粒化造影剂的方法 |
Also Published As
Publication number | Publication date |
---|---|
EP1587880B1 (en) | 2006-11-02 |
WO2004069938A1 (en) | 2004-08-19 |
DE602004003030D1 (de) | 2006-12-14 |
US20040144277A1 (en) | 2004-07-29 |
DE602004003030T2 (de) | 2007-05-16 |
US6790590B2 (en) | 2004-09-14 |
EP1587880A1 (en) | 2005-10-26 |
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