公开(公告)号：US20030099888A1

公开(公告)日：2003-05-29

申请号：US09899741

申请日：2001-07-05

Applicant: Kodak Polychrome Graphics L.L.C.

Inventor： Mathias Jarek

IPC: G03F007/004 ,  G03F007/023

CPC classification number: G03F7/0233

Abstract: 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.

Abstract translation: 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，它在水性碱性介质中具有从微溶到不溶的溶解度; 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e）至少一种具有比组合物C的酚醛树脂更高分子量的其它聚合物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， 并且涂层含有均匀分布的热塑性聚合物颗粒。