Patent ID: 6835525
Filing Date: 2004-12-28
Classification: C08F,G03F,Y10S

Abstract:
A polymer comprising recurring units of the following general formula (1) and having a weight average molecular weight of 1,000 to 500,000, wherein R1 and R2 each are hydrogen or methyl,R3 and R4 each are hydrogen or a straight, branched or cyclic, monovalent hydrocarbon group of 1 to 15 carbon atoms which may contain a hetero atom, and R3 and R4 may bond together to form a ring, wherein R3 and R4 together represent a straight, branched or cyclic, divalent hydrocarbon group of 1 to 15 carbon atoms which may contain a hetero atom, each of R5 to R8 is hydrogen, a hydroxyl group or a straight, branched or cyclic, monovalent hydrocarbon group of 1 to 15 carbon atoms which may contain a hetero atom, at least one of R5 to R8 contains a hetero atom, any two of R5 to R8 may bond together to form a ring, wherein the ring forming two R's together represent a straight, branched or cyclic, divalent hydrocarbon group of 1 to 15 carbon atoms which may contain a hetero atom, R9 and R10 each are hydrogen or methyl, each of R11 to R14 is hydrogen or a straight, branched or cyclic, monovalent hydrocarbon group of 1 to 15 carbon atoms which may contain a hetero atom, a pair of R11 and R12, a pair of R11 or R12 and R13, a pair of R11 or R12 and R14, or a pair of R13 and R14 may bond together to form a ring, wherein each pair represents a straight, branched or cyclic, divalent hydrocarbon group of 1 to 15 carbon atoms which may contain a hetero atom, R15 is hydrogen, methyl or CH2CO2R17, R15â€² is hydrogen, methyl or CH2CO2R17â€², R15â€³ is hydrogen, methyl or CH2CO2R17â€³, R15â€²â€³ is hydrogen, methyl or CH2CO2R17â€²â€³, R16 is hydrogen, methyl or CO2R17, R16â€² is hydrogen, methyl or CO2R17â€², R16â€³ is hydrogen, methyl or CO2R17â€³, R16â€²â€³ is hydrogen, methyl or CO2R17â€²â€³, R17, R17â€², R17â€³ and R17â€²â€³ may be identical or different between R15 and R16, between R15â€² and R16â€², between R15â€³ and R16â€³, and between R15â€²â€³ and R16â€²â€³, respectively, and each is a straight, branched or cyclic alkyl group of 1 to 15 carbon atoms, R18 is hydrogen or a monovalent hydrocarbon group of 1 to 15 carbon atoms containing a carboxyl or hydroxyl group, R19 is a monovalent hydrocarbon group of 2 to 15 carbon atoms containing at least one partial structure selected from the group consisting of ether, aldehyde, ketone, ester, carbonate, acid anhydride, amide and imide, R20 is a polycyclic hydrocarbon group of 7 to 15 carbon atoms or an alkyl group containing a polycyclic hydrocarbon group, R21 is an acid labile group, k is 0 or 1, x1, x2, x3, a, b, c and d represent a molar compositional ratio of the recurring units associated therewith, satisfying x1+x2+x3+a+b+c+d=1, x1, x2, x3, a, b and c are numbers inclusive of 0, d is a number of more than 0, provided that at least two of x1, x2 and x3 are not equal to 0.