Patent ID: 6953830

Claim:
A fluorine containing ethylene copolymer obtained by the copolymerization of ethylene with suitable fluorine-containing comonomer compounds, comprising: from about 0.5 wt % to about 40 wt % of a fluorine-containing comonomer compound and from about 30 wt % to about 99.5 wt % ethylene wherein: (1) the fluorine-containing comonomers are fluorinated acrylate or methacrylate esters of the general formula: Cf—L—O—CO—CR═CH 2 , wherein: (i) Cf is a fluorinated aliphatic group having at least 4 carbon atoms; (ii) L is a linking group that connects the fluorinated aliphatic group with the (meth)acrylate group, selected from the group consisting of: —SO 2 N(CH 3 )—CH 2 —CH 2 —; and —SO 2 N(CH 2 CH 3 )—CH 2 —CH(CH 3 )—, and (iii) R is H or CH 3 .