A copolymer comprises the polymerized product of a base-soluble monomer of formula (I):
wherein R
a
is H, F, C
1-10
alkyl, or C
1-10
fluoroalkyl, L
1
is an m valent C
2-30
alkylene, C
3-30
cycloalkylene, C
6-30
arylene, C
7-30
aralkylene group, X
1
is independently a base-soluble organic group comprising β-diketone, β-ester-ketone, β-di-ester, or a combination comprising at least one of the foregoing; and an additional monomer copolymerizable with the base-soluble monomer of formula (I).
一种共聚物包括公式(I)的碱溶性单体的聚合产物:其中R为H、F、C1-10烷基或C1-10氟烷基,L1为m价C2-30烷基、C3-30环烷基、C6-30芳基、C7-30芳基烷基组,X1独立地是碱溶性有机基团,包括
β-二酮、β-酯-酮、β-二酯或其中至少一种的组合;以及与公式(I)的碱溶性单体共聚的另一种单体。