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    • 6. 发明授权
    • Printing plate precursor comprising solvent-resistant copolymer
    • 包含耐溶剂共聚物的印版前体
    • US07060415B2
    • 2006-06-13
    • US11130797
    • 2005-05-17
    • Anthony P. KitsonKevin B. RayJoanne RayMathias JarekCelin Savariar-Hauck
    • Anthony P. KitsonKevin B. RayJoanne RayMathias JarekCelin Savariar-Hauck
    • G03F7/039G03F7/11G03F7/14G03F7/30
    • B41C1/1016B41C2210/02B41C2210/06B41C2210/14B41C2210/22B41C2210/24B41C2210/262Y10S430/111Y10S430/165
    • The present invention provides a positive-working, thermally imageable element generally comprising a multi-layered imageable coating. The invention provides an imageable element comprising a substrate, an ink-receptive top layer, and an underlayer, the underlayer including a specific copolymer described herein. The copolymer can be a polymer comprising constitutional units derived from: a) a monomer having a cyclic urea group; b) a monomer comprising an N-substituted maleimide; c) a (meth)acrylamide or (meth)acrylate monomer; and d) a (meth)acrylic acid or vinyl benzoic acid monomer. In another embodiment, the copolymer can be a polymer comprising constitutional units derived from: a) a monomer having a cyclic urea group; b) a (meth)acrylic acid or vinyl benzoic acid monomer; c) and a (meth)acrylonitrile monomer. The imageable element may be used to prepare a lithographic printing plate that is resistant to press chemistry and can optionally be baked to increase press runlength.
    • 本发明提供了通常包括多层可成像涂层的正性加工的可热成像元件。 本发明提供了一种可成像元件,其包括基底,油墨接受顶层和底层,底层包括本文所述的特定共聚物。 共聚物可以是包含衍生自以下的结构单元的聚合物:a)具有环状脲基团的单体; b)包含N-取代的马来酰亚胺的单体; c)(甲基)丙烯酰胺或(甲基)丙烯酸酯单体; 和d)(甲基)丙烯酸或乙烯基苯甲酸单体。 在另一个实施方案中,共聚物可以是包含衍生自以下的结构单元的聚合物:a)具有环状脲基团的单体; b)(甲基)丙烯酸或乙烯基苯甲酸单体; c)和(甲基)丙烯腈单体。 可成像元件可以用于制备耐压制化学的平版印刷版,并且可以任选地烘烤以增加压制长度。
    • 7. 发明授权
    • Method for the production of a printing plate using particle growing acceleration by an additive polymer
    • 使用添加剂聚合物使用颗粒生长加速的印刷版的制造方法
    • US06706454B2
    • 2004-03-16
    • US09899741
    • 2001-07-05
    • Mathias Jarek
    • Mathias Jarek
    • G03F7023
    • G03F7/0233
    • A coating solution useful in the preparation of printing plate precursors comprises: a) a radiation sensitive composition C comprising a phenolic resin; b) at least one thermoplastic polymer P which has a solubility in aqueous alkaline media ranging from sparingly soluble to insoluble; c) a first solvent component A which is capable of solubilizing both composition C and thermoplastic polymer P; d) a second solvent component B having a volatility less than component A, wherein component B is capable of volatilizing composition C but not thermoplastic polymer P, and composition C and thermoplastic P are homogeneously dissolved in a mixture of components A and B; and e) at least one further polymer AP having a higher molecular weight than the phenolic resin of composition C, wherein polymer AB is miscible with the phenolic resin and immiscible with thermoplastic polymer P. The coating provides a radiation-sensitive layer for the substrate, and the coating contains homogeneously distributed thermoplastic polymer particles.
    • 用于制备印版前体的涂布溶液包括:a)包含酚醛树脂的辐射敏感组合物C; b)至少一种热塑性聚合物P,其在含水碱性介质中具有从微溶到难溶的溶解度; c) 能够溶解组合物C和热塑性聚合物P的第一溶剂组分A; d)挥发性小于组分A的第二溶剂组分B,其中组分B能够挥发组合物C而不是热塑性聚合物P,组合物 C和热塑性P均匀地溶解在组分A和B的混合物中; 和)与聚合物C的酚醛树脂相比具有更高分子量的至少一种聚合物AP,其中聚合物AB可与酚醛树脂混溶并与热塑性聚合物P不混溶。涂层为基底提供辐射敏感层, 该涂层含有均匀分布的热塑性聚合物颗粒。