Patent ID: 6566037
Filing Date: 2003-05-20
Classification: C08F,G03F,Y10S

Abstract:
A polymer consisting essentially of recurring units of one or more groups of formula (1) and having a weight average molecular weight of 1,000 to 500,000, wherein R1 is hydrogen, methyl or CH2CO2R3,R2 is hydrogen, methyl or CO2R3, R3 is a straight, branched or cyclic alkyl group of 1 to 15 carbon atoms, R4 is hydrogen, a straight, branched or cyclic alkyl group of 1 to 15 carbon atoms, a straight, branched or cyclic alkoxyalkyl group of 2 to 15 carbon atoms, or a straight, branched or cyclic acyl group of 1 to 15 carbon atoms, R5 and R15 each are an acid labile group, at least one of R6 to R9 is a carboxyl or hydroxyl-containing monovalent hydrocarbon group of 1 to 15 carbon atoms, and the remainders are independently hydrogen or a straight, branched or cyclic alkyl group of 1 to 15 carbon atoms, or R6 to R9, taken together, optionally form a ring, and when they form a ring, at least one of R6 to R9 is a carboxyl or hydroxyl-containing divalent hydrocarbon group of 1 to 15 carbon atoms, and the remainders are independently a single bond or a straight, branched or cyclic alkylene group of 1 to 15 carbon atoms, at least one of R10 to R13 is a monovalent hydrocarbon group of 2 to 15 carbon atoms containing a â€”CO2â€” partial structure, and the remainders are independently hydrogen or a straight, branched or cyclic alkyl group of 1 to 15 carbon atoms, or R10 to R13, taken together, optionally form a ring, and when they form a ring, at least one of R10 to R13 is a divalent hydrocarbon group of 1 to 15 carbon atoms containing a â€”CO2â€” partial structure, and the remainders are independently a single bond or a straight, branched or cyclic alkylene group of 1 to 15 carbon atoms, R14 is a polycyclic hydrocarbon group of 7 to 15 carbon atoms or an alkyl group containing a polycyclic hydrocarbon group of 7 to 15 carbon atoms, Z is a trivalent hydrocarbon group of 1 to 10 carbon atoms, or Z forms a ring with R1, and when Z forms a ring with R1, R1 is methylene and Z is a tetravalent hydrocarbon group of 1 to 10 carbon atoms, k is equal to 0 or 1, x is a positive number, a, b, c and d are 0 or positive numbers, satisfying x+a+b+c+d=1.