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    Radiation sensitive diazo sulfo-acrylic adducts and method for producing a printing plate
    1.
    发明授权
    Radiation sensitive diazo sulfo-acrylic adducts and method for producing a printing plate 失效
    辐射敏感重氮磺基丙烯酸加合物及其印刷方法

    公开(公告)号：US5846685A

    公开(公告)日：1998-12-08

    申请号：US797675

    申请日：1997-01-31

    申请人： S. Peter Pappas ,  Jianbing Huang ,  Ajay Shah ,  Shashikant Saraiya

    发明人： S. Peter Pappas ,  Jianbing Huang ,  Ajay Shah ,  Shashikant Saraiya

    IPC分类号： G03F7/021 ,  G03F7/095

    CPC分类号： G03F7/021

    摘要： A radiation sensitive composition containing an adduct of a diazonium resin having pendant diazonium groups, with a sulfonated acrylic copolymer having pendant sulfonate groups. The sulfonated acrylic copolymer contains an acrylic moiety and a sulfonated styryl or acrylic moiety. The copolymer may optionally contain styryl moieties. The composition is useful as a radiation sensitive layer in imaging elements for graphic arts applications and is particularly useful in preparing durable, long-wear, printing plates.

    摘要翻译： 一种辐射敏感性组合物，其含有具有侧面重氮基团的重氮化合物的加合物和具有磺酸根基侧基的磺化丙烯酸共聚物。 磺化丙烯酸共聚物含有丙烯酸部分和磺化苯乙烯基或丙烯酸部分。 共聚物可以任选地含有苯乙烯基部分。 该组合物可用作用于图形艺术应用的成像元件中的辐射敏感层，并且在制备耐用的长寿命印刷版中特别有用。

    Thermal waterless lithographic printing plate
    4.
    发明授权
    Thermal waterless lithographic printing plate 失效
    无水平版印刷版

    公开(公告)号：US5919600A

    公开(公告)日：1999-07-06

    申请号：US128887

    申请日：1998-08-04

    申请人： Jianbing Huang ,  S. Peter Pappas ,  Shashikant Saraiya ,  Thi Nguyen Do ,  Richard M. Goodman

    发明人： Jianbing Huang ,  S. Peter Pappas ,  Shashikant Saraiya ,  Thi Nguyen Do ,  Richard M. Goodman

    IPC分类号： G03F7/00 ,  B41C1/10 ,  B41N1/00 ,  B41N1/14 ,  G03F7/32 ,  G03C1/76

    CPC分类号： B41C1/1016 ,  B41N1/003 ,  B41C2201/02 ,  B41C2201/12 ,  B41C2201/14 ,  B41C2210/02 ,  B41C2210/12 ,  B41C2210/16 ,  B41C2210/24 ,  Y10S430/145

    摘要： A waterless or driographic printing plate which can be thermally imaged by an infrared laser is composed of a substrate; a thermal imaging layer containing a photothermal conversion material, such as an infrared absorbing material, and a thermoplastic polyurethane with pendent allyl groups; and a crosslinked silicone polymer top layer. It was discovered that when the imaging layer contains an allyl functional polyurethane mixed with an infrared absorbing dye or pigment, the polymeric layer will have enhanced solubility in certain solvents when exposed to infrared radiation. In addition, the polymeric layer continues to exhibit excellent adhesion to the silicone in unexposed areas so that the infrared absorbing layer can endure development with a suitable organic solvent, or a solvent mixture. Mild brushing or rubbing with the developing solvent readily removes laser-struck portions of the infrared imaging layer while unexposed areas remain firmly intact.

    摘要翻译： 可通过红外激光热成像的无水或流体印刷版由基板构成; 包含光热转换材料如红外吸收材料的热成像层和具有侧链烯丙基的热塑性聚氨酯; 和交联的硅氧烷聚合物顶层。 已经发现，当成像层含有与红外吸收染料或颜料混合的烯丙基官能聚氨酯时，当暴露于红外辐射时，聚合物层将在某些溶剂中具有增强的溶解度。 此外，聚合物层在未曝光区域中继续表现出对硅酮的优异粘合性，使得红外线吸收层可以用合适的有机溶剂或溶剂混合物持续显影。 用显影溶剂进行轻度刷涂或摩擦可以很容易地去除红外成像层的激光打击部分，而未曝光的区域保持牢固地完整。