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    • 5. 发明授权
    • Process for fixing an image, and medium for use therein
    • 用于固定图像的方法和用于其中的介质
    • US5741630A
    • 1998-04-21
    • US232757
    • 1994-04-25
    • John L. MarshallRita S. Shon BakerLarry C. TakiffStephen J. TelferJohn C. Warner
    • John L. MarshallRita S. Shon BakerLarry C. TakiffStephen J. TelferJohn C. Warner
    • B41M5/28B41M5/30B41M5/323B41M5/46G03C1/73G03F7/004
    • G03F7/0045B41M5/30G03C1/73
    • A process for producing and fixing an image uses an imaging medium comprising an acid-generating layer or phase comprising a mixture of a superacid precursor, a sensitizer and a secondary acid generator, and a color-change layer comprising an image dye. The sensitizer can absorb radiation of a sensitizer wavelength which does not, in the absence of the sensitizer, cause decomposition of the superacid precursor to form the corresponding superacid. The secondary acid generator is capable of acid-catalyzed thermal decomposition by the first acid to form a second acid, and the image dye undergoes a color change upon contact with the second acid. The medium is imagewise exposed to radiation of the sensitizer wavelength, thereby causing the sensitizer, in exposed areas, to decompose superacid precursor with formation of the fist acid. The medium is then heated to cause, in the exposed areas, acid-catalyzed thermal decomposition of the secondary acid generator and formation of the second acid. The components of the acid-generating and color-change layers or phases are mixed so that in exposed areas, the second acid causes the image dye to change color. At least the non-exposed areas, a copper compound and a reactive material more reactive than the image dye to the products resulting from decomposition of the superacid precursor in the presence of the copper compound, are used to decompose the superacid precursor and fix the image.
    • 用于制备和定影图像的方法使用包含酸产生层或包含超酸前体,敏化剂和次生酸发生剂的混合物的相位的成像介质和包含图像染料的变色层。 敏化剂可以吸收敏化剂波长的辐射,其在不存在敏化剂的情况下不会导致超酸前体分解形成相应的超强酸。 二次酸产生剂能够通过第一种酸进行酸催化热分解以形成第二种酸,并且图像染料在与第二种酸接触时经历颜色变化。 介质被成像地暴露于敏化剂波长的辐射,从而使曝光区域中的敏化剂在形成第一酸时分解超酸前体。 然后将介质加热以在暴露的区域中引起二次酸发生器的酸催化热分解和第二酸的形成。 将酸产生和变色层或相的组分混合,使得在曝光区域中,第二种酸引起图像染料改变颜色。 使用未曝光区域,铜化合物和比图像染料反应性更高的反应性物质,在由铜化合物存在的情况下由超强酸前体分解而产生的产物,分解超酸前体并固定图像 。
    • 6. 发明授权
    • Low-volatility, substituted 2-phenyl-4,6-bis (halomethyl)-1,3,5-triazine
for lithographic printing plates
    • 用于平版印刷版的低挥发性取代的2-苯基-4,6-双(卤代甲基)-1,3,5-三嗪
    • US5561029A
    • 1996-10-01
    • US430461
    • 1995-04-28
    • Maurice J. FitzgeraldFrederick R. KearneyRong-Chang LiangWilliam C. SchwarzelDonna J. GuarreraJohn M. HardinJohn C. Warner
    • Maurice J. FitzgeraldFrederick R. KearneyRong-Chang LiangWilliam C. SchwarzelDonna J. GuarreraJohn M. HardinJohn C. Warner
    • C08F2/44C08F2/50G03F7/028G03F7/029G03F7/031
    • G03F7/0295Y10S430/12Y10S430/121Y10S430/127
    • The present invention sets forth the incorporation of a substituted 2-phenyl-4,6-bis (trichloromethyl)-1,3,5-triazine in photoresists of lithographic printing plates for the purpose of promoting their shelf-life, room light stability, and developability. The present invention provides a photocurable composition comprising at least a photopolymerizable ethylenically unsaturated monomer having at least one terminal ethylenic group and capable of forming a polymer upon exposure to actinic radiation; and an s-triazine capable of initiating free radical polymerization of the photopolymerizable ethylenically unsaturated monomer and being represented by the following general formula [I]: ##STR1## wherein R.sub.1 is either OR.sub.4 or NR.sub.5 R.sub.6, wherein R.sub.5 and R.sub.6 may or may not be identical with each other, either R.sub.5 or R.sub.6 may represent hydrogen, and wherein R.sub.4 and at least one of R.sub.5 and R.sub.6 represent a ballast group capable of preventing the substantial volatilization of the s-triazine from the photoresist composition, the ballast group being a substituted or unsubstituted alkyl group, or a substituted or unsubstituted aryl group, the substituted or unsubstituted alkyl group having at least 4 carbon atoms, the substituted or unsubstituted aryl group having at least 6 carbon atoms; R.sub.2 and R.sub.3 may or may not be identical with each other and each represent hydrogen, halogen, phenyl, a substituted or unsubstituted alkyl group, or an alkoxyl group; X and Y may or may not be identical with each other and each represent chlorine or bromine; and m and n may or may not be identical with each other and are each an integer of 0, 1, or 2. Desirable compositions will further comprise at least one photooxidizable leuco triarylmethane dye.
    • 本发明阐述了取代的2-苯基-4,6-双(三氯甲基)-1,3,5-三嗪在平版印刷版的光致抗蚀剂中的引入,以促进其保质期,室内光稳定性, 和可开发性。 本发明提供一种可光固化组合物,其包含至少一种具有至少一个末端烯属基并可在暴露于光化辐射时形成聚合物的可光聚合的烯属不饱和单体; 和能够引发可光聚合的烯键式不饱和单体的自由基聚合并由以下通式[I]表示的均三嗪:其中R 5或R 6可以彼此相同或不同,R 5或R 6可以 表示氢,并且其中R 4和R 5和R 6中的至少一个表示能够防止光刻胶组合物中s-三嗪显着挥发的压载基团,该镇流基为取代或未取代的烷基,或取代或未取代的 具有至少4个碳原子的取代或未取代的烷基,取代或未取代的具有至少6个碳原子的芳基; R 2和R 3可以彼此相同或不同,分别代表氢,卤素,苯基,取代或未取代的烷基或烷氧基; X和Y可以相同也可以不相同,分别表示氯或溴; 并且m和n可以彼此相同也可以不相同,并且各自为0,1或2的整数。期望的组合物还将包含至少一种可光氧化的无色三芳基甲烷染料。