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    • 2. 发明授权
    • Method for the production of thermally cross-linked laser engravable flexographic elements
    • 用于生产热交联激光可雕刻柔版印刷元件的方法
    • US06794115B2
    • 2004-09-21
    • US10250867
    • 2003-07-29
    • Thomas TelserJens SchadebrodtMargit HillerWolfgang Wenzl
    • Thomas TelserJens SchadebrodtMargit HillerWolfgang Wenzl
    • G03F711
    • B41C1/05Y10S430/146
    • Laser-engravable flexographic printing elements including a thermally crosslinked, elastomeric, laser-engravable relief-forming layer E are made by producing a multilayer composite which has at least a two-layer composite formed of a depot layer D and an uncrosslinked precursor layer V for the relief-forming layer E which is directly adjacent to the depot layer D. Optionally, the multilayer composite may include further layers, such as support foils or films and/or protective films. The precursor layer V most preferably includes at least one elastomeric binder, and at least one ethylenically unsaturated monomer and, optionally an absorber for laser radiation and/or further additives. The depot layer D most preferably includes at least one elastomeric binder, and at least one thermally decomposing polymerization initiator and, optionally, an absorber for laser radiation and/or further additives. The thermally decomposing polymerization initiators are allowed to diffuse out of the depot layer D into the precursor layer V. If desired the depot layer D may be removed. Thermal crosslinking of the precursor layer V thereby yields the crosslinked elastomeric, laser-engravable, relief-forming layer E.
    • 激光可雕刻柔性版印刷元件,包括热交联的,弹性的,可激光雕刻的浮雕形成层E通过制备多层复合材料制成,所述多层复合材料具有至少两层复合材料,其由贮存层D和未交联的前体层V形成, 形成沉积层E直接邻近贮存层D.任选地,多层复合物可以包括另外的层,例如支撑箔或膜和/或保护膜。 前体层V最优选包括至少一种弹性体粘合剂和至少一种烯属不饱和单体和任选的用于激光辐射的吸收剂和/或其它添加剂。 贮库层D最优选包括至少一种弹性粘合剂和至少一种热分解聚合引发剂和任选的用于激光辐射的吸收剂和/或其它添加剂。 允许热分解聚合引发剂从贮存层D扩散到前体层V中。如果需要,可以除去贮存层D. 前体层V的热交联由此产生交联的弹性体,激光可雕刻的浮雕形成层E.
    • 6. 发明授权
    • Production of photopolymeric flexographic relief printing plates
    • 生产光电复合印刷版印刷版
    • US5128234A
    • 1992-07-07
    • US720064
    • 1991-06-24
    • Thomas Telser
    • Thomas Telser
    • G03F7/00G03F7/027G03F7/32
    • G03F7/325
    • In a novel process for the production of a flexographic relief printing plate from a photosensitive recording element which containsA) a dimensionally stable substrate andB) at least one photopolymerizable recording layer havingb.sub.1) at least one elastomeric polymer as a binder,b.sub.2) at least one photopolymerizable monomer which is compatible with the binder (b.sub.1) andb.sub.3) at least one photopolymerization initiator,by(1) imagewise exposure of the photopolymerizable recording layer (B) to actinic light and(2) washout (development) of the unexposed and therefore nonphotopolymerized parts of the imagewise exposed recording layer (B) with an organic developer with formation of a relief layer,the organic developer used contains, based on its total amount, from 10% to 95% by volume of at least one mineral oil fraction from which aromatics have been removed and which has a boiling range of 150.degree. to 260.degree. C. and a flashpoint above 45.degree. C. and from 90% to 5% by volume of at least one ester of acetic acid with a saturated alcohol where the alkyl radical is of 6 or more carbon atoms and/or with an alkoxy-substituted saturated alcohol where the alkoxyalkyl radical is of 3 or more carbon atoms in total and/or of at least one alkyl and/or alkoxyalkyl glycollate, the boiling point of boiling range of esters being matched with that of the mineral oil fraction from which aromatics have been removed.
    • 在用于从感光记录元件生产柔版印刷印版的新颖方法中,其包含A)尺寸稳定的基底和B)至少一种可光聚合记录层,其具有b1)至少一种作为粘合剂的弹性体聚合物,b2) 通过(1)将光致聚合记录层(B)成像曝光到光化光,和(2)未曝光的(2)的冲洗(显影),至少一种与粘合剂(b1)和b3相容的光聚合单体至少一种光聚合引发剂 因此,成像曝光记录层(B)的非光聚合部分与形成浮雕层的有机显影剂相比,所用的有机显影剂基于其总量含有10体积%至95体积%的至少一种矿物油 已经除去芳族化合物的馏分,其沸点范围为150-260℃,闪点在45℃以上,90〜5体积%的至少一种es 的乙酸与饱和醇反应,其中烷基具有6个或更多个碳原子和/或与烷氧基取代的饱和醇,其中烷氧基烷基总共具有3个或更多个碳原子,和/或至少一个烷基 和/或烷氧基烷基乙醇酸酯,酯的沸点沸点与已除去芳族化合物的矿物油馏分的沸点相匹配。