Patent ID: 7473748

Claim:
A vinyl monomer containing a haloalkyl ester group of a superacid, wherein the vinyl monomer is represented by the following formula (3) or (6): (wherein, n represents an integer of 0 or 1, m represents an integer of 1 to 6, and R represents a haloalkyl group having 2 to 10 carbon atoms and the halogen in the haloalkyl group is chlorine and/or fluorine), (wherein, n, m and R are the same as defined in the aforementioned formula (3), and R f 1 represents a perfluoroalkyl group having 1 to 10 carbon atoms, an ether group, —SO 2 NR a SO 2 — or —SO 2 X (wherein X represents a fluorine atom or —OR b ) may be contained in R f 1 , and R a and R b are respectively and independently selected from the aforementioned R).