Patent ID: 7947425

Claim:
A copolymer prepared by copolymerization of: (a) at least one fluorinated vinyl ether; and (b) at least one monomer having the structure of formula (II) wherein: R 5 is selected from F and lower fluoroalkyl; R 6 , R 7 , and R 8 are independently selected from H, F, lower alkyl, lower fluoroalkyl, cyano, —(CO)—O—R 9 , —(CO)—NR 10 R 11 , —(CO)—R 12 , and —S(O) 2 —OR 13 ; R 9 is H, an acid-labile moiety optionally substituted with one or more fluorine atoms, or an acid-inert moiety optionally substituted with one or more fluorine atoms; and R 10 , R 11 , R 12 , and R 13 are independently selected from H, C 1 -C 12 alkyl, substituted C 1 -C 12 alkyl, C 1 -C 12 heteroalkyl, substituted C 1 -C 12 heteroalkyl, C 3 -C 15 alicyclic, C 3 -C 15 fluoroalicyclic, C 5 -C 14 aryl, substituted C 5 -C 14 aryl, C 5 -C 14 heteroaryl, and substituted C 5 -C 14 heteroarylene, wherein the fluorinated vinyl ether has the structure of formula (I) wherein: L is selected from C 2 -C 12 branched or cyclic alkylene, substituted C 2 -C 12 branched or cyclic alkylene, C 2 -C 12 branched or cyclic heteroalkylene, substituted C 2 -C 12 branched or cyclic heteroalkylene, C 3 -C 15 alicyclic, C 3 -C 15 fluoroalicyclic and combinations thereof; X is H or F; Y is H or F, providing that when X is H, then Y is F; Z is identical to Y, or is taken together with another substituent to form a ring; R 1 is selected from H, C 1 -C 12 alkyl, fluorinated C 1 - 12 alkyl, and C 3 -C 15 alicyclic; R 2 is selected from H, C 1 -C 12 alkyl, fluorinated C 1 - 12 alkyl, and C 3 -C 15 alicyclic, or R 2 and one of L and Z are taken together to form a ring; R 3 is selected from H, C 1 -C 12 alkyl, and C 3 -C 15 alicyclic, or R 3 and one of R 1 , L, and Z are taken together to form a ring; R 4 is selected from H, an acid-labile group optionally substituted with one or more fluorine atoms, and an acid-inert moiety optionally substituted with one or more fluorine atoms.