Negative-working lithographic printing plate precursor
    51.
    发明授权
    Negative-working lithographic printing plate precursor 有权
    负性平版印刷版原版

    公开(公告)号:US09201302B2

    公开(公告)日:2015-12-01

    申请号:US14044912

    申请日:2013-10-03

    摘要: Negative-working lithographic printing plate precursors have improved bakeability and good shelf life and can be imaged using either UV or infrared radiation. These precursors have a negative-working imageable layer that has a unique polymeric binder comprising a polymeric backbone and further comprising at least (a) and (b) pendant groups distributed in random order along the polymeric backbone. The (a) pendant groups are ethylenically unsaturated polymerizable groups, and the (b) pendant groups are defined by Structures (I), (II), and (III) described in the disclosure.

    摘要翻译: 负性平版印刷版前体具有改善的烘烤性和良好的保质期,并且可以使用UV或红外辐射成像。 这些前体具有负性可成像层,其具有包含聚合物主链的独特聚合物粘合剂,并且还包含至少(a)和(b)沿聚合物主链以随机顺序分布的侧基。 (a)侧基是烯属不饱和可聚合基团,(b)侧基由本发明中描述的结构(I),(II)和(III)定义。

    NEGATIVE-WORKING LITHOGRAPHIC PRINTING PLATE PRECURSORS
    52.
    发明申请
    NEGATIVE-WORKING LITHOGRAPHIC PRINTING PLATE PRECURSORS 有权
    负离子平版印刷机前驱板

    公开(公告)号:US20130078575A1

    公开(公告)日:2013-03-28

    申请号:US13239435

    申请日:2011-09-22

    IPC分类号: G03F7/20 G03F7/004 G03F7/032

    摘要: A lithographic printing plate precursor comprises an imageable layer comprising a free radically polymerizable component, an initiator composition capable of generating free radicals upon exposure to imaging infrared radiation, an infrared radiation absorbing dye comprising an infrared radiation absorbing cation and a counter anion, and a polymeric binder. The salt formed between the infrared radiation absorbing cation and a tetraphenyl borate has solubility in 2-methoxy propanol at 20° C. that is greater than or equal to 3.5 g/l. The use of these infrared radiation absorbing dyes in the imageable layers provides a reduced tendency of these dyes to crystallize in the presence of tetraaryl borate counter anions.

    摘要翻译: 平版印刷版前体包括可成像层,其包含可自由基聚合的组分,在暴露于成像红外辐射时能够产生自由基的引发剂组合物,包含红外辐射吸收阳离子和抗衡阴离子的红外辐射吸收染料,以及聚合物 粘合剂 在红外辐射吸收阳离子和四苯基硼酸盐之间形成的盐在20℃下在2-甲氧基丙醇中具有大于或等于3.5g / l的溶解度。 在可成像层中使用这些红外辐射吸收染料提供这些染料在硼酸四芳基酯阴离子存在下结晶的趋势。

    Negative-working imaging elements and methods of use
    54.
    发明授权
    Negative-working imaging elements and methods of use 失效
    负面影像元素和使用方法

    公开(公告)号:US08354216B2

    公开(公告)日:2013-01-15

    申请号:US12173220

    申请日:2008-07-15

    IPC分类号: B41F7/00 G03F7/00

    摘要: Negative-working imageable elements such as lithographic printing plate precursors, include a free-radically polymerizable component, an initiator composition that is capable of generating free radicals sufficient to initiate polymerization of the free-radically polymerizable component upon exposure to imaging radiation in the presence of a radiation absorbing compound, a radiation absorbing compound, an aerobic free radical inhibitor, optionally a polymeric binder that is not a free radically polymerizable component, and an anaerobic free radical inhibitor. The molar ratio of the anaerobic free radical inhibitor to the aerobic free radical inhibitor is at least 1:1. This combination of inhibitors provides increased shelf life and good latent image stability particularly when the element includes a polymeric topcoat layer that functions as an oxygen barrier.

    摘要翻译: 负面工作的可成像元件如平版印刷版前体包括可自由基聚合的组分,引发剂组合物,其能够产生足够的自由基,以便在存在可见光辐射的情况下暴露于成像辐射时引发可自由基聚合的组分的聚合 辐射吸收化合物,辐射吸收化合物,需氧自由基抑制剂,任选的不是可自由基自由基组分的聚合物粘合剂和厌氧自由基抑制剂。 厌氧自由基抑制剂与好氧自由基抑制剂的摩尔比至少为1:1。 这种抑制剂的组合提供了增加的保质期和良好的潜影稳定性,特别是当元件包括用作氧阻隔层的聚合物顶涂层时。

    UV-SENSITIVE LITHOGRAPHIC PRINTING PLATE PRECURSOR WITH BENZOXAZOLE DERIVATIVE AND ANALOGUES THEREOF AS SENSITIZER
    58.
    发明申请
    UV-SENSITIVE LITHOGRAPHIC PRINTING PLATE PRECURSOR WITH BENZOXAZOLE DERIVATIVE AND ANALOGUES THEREOF AS SENSITIZER 失效
    紫外线敏感光刻印刷板前体与苯并噻唑衍生物及其类似物作为敏化剂

    公开(公告)号:US20100291355A1

    公开(公告)日:2010-11-18

    申请号:US12161720

    申请日:2007-01-31

    摘要: Lithographic printing plate precursor comprising (a) a lithographic substrate with a hydrophilic surface and (b) a radiation-sensitive coating on the hydrophilic surface comprising (i) one or more types of monomers and/or oligomers and/or polymers, each comprising at least one ethylenically unsaturated group accessible to a free-radical polymerization, (ii) at least one sensitizer, and (iii) at least one coinitiator capable of forming free radicals together with the sensitizer, said coinitiator being other than metallocenes, characterized in that the at least one sensitizer comprises a compound of formula (I) wherein at least one of the groups R9 to R12 is a bulky group which has a van der Waals volume of at least 55 Å3.

    摘要翻译: 该平版印刷版原版包括(a)具有亲水表面的平版印刷基材和(b)亲水表面上的辐射敏感涂层,其包含(i)一种或多种类型的单体和/或低聚物和/或聚合物, 至少一种可自由基聚合的烯键式不饱和基团,(ii)至少一种敏化剂,和(iii)至少一种能够与敏化剂一起形成自由基的共引发剂,所述共引发剂不是茂金属,其特征在于: 至少一种敏化剂包括式(I)的化合物,其中基团R 9至R 12中的至少一个是大体积基团,范德华体积至少为Å3。

    NEGATIVE-WORKING IMAGEABLE ELEMENTS WITH OVERCOAT
    59.
    发明申请
    NEGATIVE-WORKING IMAGEABLE ELEMENTS WITH OVERCOAT 有权
    负责工作的图像元素与OVERCOAT

    公开(公告)号:US20100233445A1

    公开(公告)日:2010-09-16

    申请号:US12403458

    申请日:2009-03-13

    IPC分类号: B32B3/10 G03F7/004 G03F7/20

    摘要: Negative-working imageable element can be used to provide lithographic printing plates. The imageable element has a suitable radiation-sensitive imageable layer and a water-soluble overcoat disposed on the imageable layer. This overcoat comprises at least one poly(vinyl alcohol) having a saponification degree of at least 90%, an alkoxylation product of an alkanol, and either a 2-sulfonato succinic acid dialkylester or an alkoxylation product of a 1,4-butanediol.

    摘要翻译: 负性可成像元件可用于提供平版印刷版。 可成像元件具有合适的辐射敏感可成像层和设置在可成像层上的水溶性外涂层。 该外涂层包含至少一种皂化度至少为90%的聚(乙烯醇),链烷醇的烷氧基化产物,2-磺酸丁二酸二烷基酯或1,4-丁二醇的烷氧基化产物。