Patent ID: 6737492
Filing Date: 2004-05-18
Classification: C08F,C09D,G03F

Abstract:
A radiation absorbing polymer which absorbs a predetermined wavelength radiation and which contains at least both a recurring unit represented by the following formula (1) and a recurring unit represented by the following formula (2): whereinR1 and R2 independently represent a hydrogen atom or an alkyl group, and R3 represents an organic group having at least one carbonyl group; whereinR4 and R5 independently represent a hydrogen atom, an alkyl group or a carboxyl group, and Y represents a group having an organic chromophore having an absorption at a predetermined wavelength radiation, said organic chromophore being bonded directly or through a linkage group to the carbon atom constituting the main chain, wherein said recurring unit represented by the formula (1) is a recurring unit represented by (a) the following formula (4): whereinR1, R2, R8, R9 and R10 represent independently a hydrogen atom or an alkyl group, or (b) the following formula (5): whereinR1, R2, R12, R13 and R14 represent independently a hydrogen atom or an alkyl group, and R11 represents a divalent group.