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发明授权
CN1947061B 具有巯基官能化的可自由基聚合的单体的平版印刷板前体 有权

具有巯基官能化的可自由基聚合的单体的平版印刷板前体
摘要：
一种平版印刷板前体，包括：a)未经处理的或预先处理的基材和b)辐射敏感涂层，其包括：(i)至少一种在含水碱性显影剂中可溶的或可膨胀的聚合物粘合剂；(ii)至少一种可自由基聚合的单体和/或低聚物，其在分子中包括至少一个非芳族C-C双键和至少一个SH基团；和(iii)用于自由基聚合的辐射敏感引发剂或引发剂系统，其中组分(ii)具有通式(I)，其中各个R1a、R1b和R1c独立地选自H、C1-C6烷基、C2-C8链烯基、芳基、卤素、CN和COOR1d，其中R1d是H、C1-C18烷基、C2-C8链烯基、C2-C8炔基或芳基；和Z是脂族、杂环或芳香杂环间隔基或其两个或更多个的组合，其中Z可任选地包括一个或多个其它的SH基团和/或一个或多个其它的非芳族C-C双键；并且各个Z1独立地选自单键，通式(Ia)、(Ib)、(Ic)、(Id)、(Ie)、(If)、(Ig)、(Ih)、(Ij)、(Ik)、(Im)、(In)、(I0)、(Ip)、(Iq)、(Ir)、(Is)、(It)、(Iu)、(Iv)，其中R2a、R2b和R2c独立地选自H、C1-C6烷基和芳基，Z2选自单键、O、S和NR2c，Z3是连接到Z的单键，b是1-10的整数而c是1-3的整数。
摘要（英）：

Lithographic printing plate precursor comprising: a) an untreated or pretreated substrate and b) a radiation-sensitive coating comprising: (i) at least one polymeric binder soluble or swellable in aqueous alkaline developers; (ii) at least one free-radical polymerizable monomer and/or oligomer comprising at least one non-aromatic C-C double bond and at least one SH group in the molecule; and (iii) a radiation-sensitive initiator or initiator system for free-radical polymerization, wherein component (ii) has the formula (I) wherein each R<1a>,< >R<1b> and R<1c >is independently selected from H, C1-C6 alkyl, C2-C8 alkenyl, aryl, halogen, CN and COOR<1d>, wherein Ris H, C1-C18 alkyl, C2-C8 alkenyl, C2-C8 alkynyl or aryl; and Z is an aliphatic, heterocyclic or heteroaromatic spacer or a combination of two or more thereof, wherein Z can optionally comprise one or more additional SH groups and/or one or more additional non-aromatic C-C double bonds; and each Z<1> is independently selected from a single bond, formulae (Ia), (Ib), (Ic), (Id), (Ie), (If), (Ig), (Ih), (Ij), (Ik), (Im), (In), (Io), (Ip), (Iq), (Ir), (Is), (It), (Iu), (Iv), wherein R<2a>, R<2b> and R<2c> are independently selected from H, C1-C6 alkyl and aryl, Z<2> is selected from a single bond, O, S and NR<2c>, Z<3> is a single bond which is connected to Z, b is an integer from 1 to 10 and c is an integer from 1 to3.

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