Patent ID: 6673515
Filing Date: 2004-01-06
Classification: C08G,G03F

Abstract:
A polymer comprising recurring units of the following general formulae (1-1) and (2-1), and having a weight average molecular weight of 1,000 to 500,000: wherein k is 0 or 1, mis 0, 1, 2, 3, or 4, n is 1 or 2,R1 is hydrogen, methyl or CH2CO2R3, R2 is hydrogen, methyl or C02R3, R3 is a straight, branched or cyclic alkyl group of 1 to 15 carbon atoms, R4 is an acid labile group, R5 is selected from the group consisting of a halogen atom, hydroxyl group, a straight, branched or cyclic alkoxy, acyloxy or alkylsulfonyloxy group of 1 to 15 carbon atoms, and a straight, branched or cyclic alkoxyalkoxy or alkoxycarbonyloxy group of 2 to 15 carbon atoms, in which some or all of the hydrogen atoms on constituent carbon atoms may be substituted with halogen atoms, Z is a single bond or a straight, branched or cyclic (p+2)-valent hydrocarbon group of 1 to 5 carbon atoms, in which at least one methylene may be substituted with oxygen to form a chain-like or cyclic ether or two hydrogen atoms on a common carbon may be substituted with oxygen to form a ketone, and p is 0, 1 or 2.