Provided is a polymer represented by the following formula (6):
wherein A represents a repeating unit obtained by polymerizing at least one vinyl monomer having a function of generating an acid by the action of an acid and further breeding an acid by the action of an acid generated from the vinyl monomer itself; B represents a repeating unit obtained by polymerizing at least one vinyl monomer having a partial structure of causing an absorption region of from 360 to 900 nm by the action of an acid; C represents a repeating unit obtained by polymerizing at least one vinyl monomer copolymerizable with A and B; and x, y and z each represents % by weight and satisfy the conditions of 1≦x≦99, 1≦y≦99, 0≦z≦98 and x+y+z=100.
本发明提供了由下式(6)表示的聚合物:
其中 A 代表通过聚合至少一种
乙烯基单体得到的重复单元,该单体具有在酸的作用下产生酸的功能,并在
乙烯基单体本身产生的酸的作用下进一步产生酸;B 代表通过聚合至少一种
乙烯基单体而获得的重复单元,该单体具有在酸的作用下产生 360 至 900 纳米吸收区域的部分结构; C 代表通过聚合至少一种可与 A 和 B 共聚的
乙烯基单体而获得的重复单元; x、y 和 z 分别代表重量百分比,并满足 1≦x≦99、1≦y≦99、0≦z≦98 和 x+y+z=100 的条件。