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    • 9. 发明申请
    • PROCESS FOR THE PRODUCTION OF LITHOGRAPHIC PRINTING PLATES
    • 生产平版印刷板的方法
    • WO2006087102A2
    • 2006-08-24
    • PCT/EP2006/000878
    • 2006-02-01
    • KODAK POLYCHROME GRAPHICS GMBHBAUMANN, HaraldFIEBAG, UlrichDWARS, UdoSTREHMEL, BerndFLUGEL, MichaelTIMPE, Hans-Joachim
    • BAUMANN, HaraldFIEBAG, UlrichDWARS, UdoSTREHMEL, BerndFLUGEL, MichaelTIMPE, Hans-Joachim
    • G03F7/322
    • Process for the production of lithographic printing plates comprising (a) providing a lithographic substrate with a hydrophilic surface; (b) applying a negative working radiation-sensitive composition onto the hydrophilic surface, wherein the composition comprises: (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 which in the presence of at least one coinitiator and upon exposure to radiation of a wavelength of 300 to 750 to 1,100 nm initiates the free-radical polymerization of component (i); and (iii) at least one binder with acidic functional groups and is substantially not sensitive to the wavelength range of 480 to 750 nm; (c) image-wise exposure of the resulting negative working lithographic printing plate precursor to radiation selected from the wavelength range of 300 to 750 to 1,100 nm depending on the sensitizer or initiator system used; and (d) removing the non-irradiated areas by means of a treatment with an alkaline developer with a pH value in the range of 9 to 14 comprising (i) water, (ii) one or more alkali hydroxides in an amount sufficient for adjusting a pH value in the range of 9 to 14; and (iii) 1 to 30 wt. -% of at least one compound of formula (I) wherein R 1 , R 2 , R 3 and R 4 are each independently selected from C 1 -C 12 alkyl groups and aryl groups, X is selected from -CH=CH-, -C≡C-,formula (II), formula (III), and formula (IV), n + m results in a value of 2 to 30 and p + q results in a value of 0 to 30, wherein in the case of p + q ≠ 0 the ethylene oxide and propylene oxide units are present as blocks or randomly distributed.
    • 制备平版印刷版的方法包括(a)向平版印刷基材提供亲水表面; (b)将负性辐射敏感组合物施加到所述亲水性表面上,其中所述组合物包含:(i)一种或多种类型的单体和/或低聚物和/或聚合物,其各自包含至少一个烯键式不饱和基团 自由基聚合,(ii)至少一种敏化剂,其在至少一种共引发剂的存在下,并且在暴露于300至<480nni或> 750至1,100nm的波长的辐射下引发组分的自由基聚合 一世); 和(iii)至少一种具有酸性官能团的粘合剂,并且对480至750nm的波长范围基本上不敏感; (c)根据所使用的敏化剂或引发剂体系,将得到的负性工作平版印刷版原版成像曝光于从300至<480nm或> 750至1,100nm的波长范围内的辐射; 和(d)通过用pH值在9至14范围内的碱性显影剂处理除去未照射的区域,其包含(i)水,(ii)一种或多种足以调节的碱金属氢氧化物 pH值在9至14的范围内; 和(iii)1〜30wt。 - 至少一种其中R 1,R 2,R 3和R 4的式(I)化合物的% SUP>各自独立地选自C 1 -C 12烷基和芳基,X选自-CH = CH-,-C = C-,式( II),式(III)和式(IV)中,n + m的值为2〜30,p + q的值为0〜30,其中,在p +q≥2的情况下, 0环氧乙烷和环氧丙烷单元以块或随机分布存在。