Patent ID: 7285373

Claim:
A polymer consisting essentially of repeating units l, m, and n represented by Formula 1: wherein X is one group selected from the group consisting of a C 3 -C 30 vinyl ether derivative, a C 3 -C 30 maleic anhydride derivative, and a C 3 -C 30 olefin derivative not having at a double bond position of the C 3 -C 30 olefin derivative an electron withdrawing group selected from the group consisting of a halogen group, a nitrile group (—CN), a nitro group (—NO 2 ), a trifluoromethyl group (—CF 3 ) and a sulfon group (—SO 2 ); R 1 and R 3 are independently selected from the group consisting of hydrogen, C 1 -C 30 alkyl, C 1 -C 30 alkoxyalkyl, C 1 -C 30 halogen-substituted alkyl, and C 1 -C 30 halogen-substituted alkoxyalkyl; R 2 is trifluoromethyl; and wherein the repeat unit 1 comprises from about 5 to about 70 mole % of the polymer, the repeat unit m comprises from about 20 to about 70 mole % of the polymer, and the repeat unit n comprises from about 10 to about 70 mole % of the polymer, and l+m+n=100%.