Patent ID: 7132489

Claim:
A self-emulsifying fluorine-containing amphoteric polymer prepared by radical copolymerization between a hydrocarbon compound with a hydrophilic group represented by formula 1 as a main chain and a macromonomer as a side chain prepared by copolymerization between an unsaturated hydrocarbon compound and a perfluoro alkyl compound selected from the group consisting of compounds represented by formulae 2a–2d: (R 1 ) 2 NCH 2 CH 2 COOC(R 2 )═CH 2 Formula 1 XC n F 2n CH 2 -OCOCR 1 ═CH 2 Formula 2a XC n F 2n SO 2 NR 3 (CH 2 ) m OCOCR 1 ═CH 2 Formula 2b XC n F 2n CH 2 CH(OH)(CH 2 ) m OCOCR 1 ═CH 2 Formula 2c XC n F 2n (CH 2 ) m OCOCR 1 ═CH 2 Formula 2d wherein R 1 and R 2 are H or CH 3, R 3 is a C 1 –C 4 alkyl group, X is H, F or Cl, m is an integer of 2–6 and n is an integer of 3–21.