Patent ID: 6610456
Filing Date: 2003-08-26
Classification: C08F,G03F,Y10S

Abstract:
A copolymer prepared by copolymerization of at least one aromatic monomer having the structure of formula (I) and at least one monomer having the structure of formula (II) wherein:m is zero or 1; n is an integer in the range of zero through 4 inclusive; R1 is H, F, lower alkyl, or fluorinated lower alkyl; R2 is alkyl, fluorinated alkyl, hydroxyl, alkoxy, fluorinated alkoxy, halogen, or cyano; R3 is a fluorinated alkyl; R4 is H, alkyl, or fluorinated alkyl; R5 is H, alkyl, protected hydroxyl, â€”C(O)R8, â€”CH2â€”C(O)OR8, â€”C(O)OR9, or â€”SiR10 where R8 is H or alkyl, R9 is alkyl, and R10 is alkyl or alkoxy; R6 is H, F, lower alkyl, or fluorinated lower alkyl; R7 is selected from the group consisting of H, an acid-labile moiety optionally substituted with one or more fluorine atoms, and an acid inert moiety optionally substituted with one or more fluorine atoms; L is a hydrocarbylene linking group optionally substituted with one or more fluorine atoms; and Ar is an aromatic moiety.