Patent ID: 6852816
Filing Date: 2005-02-08
Classification: C08F

Abstract:
1. A polymerisation process in which ethylenically unsaturated monomers including a zwitterionic monomer of the general formula I in which Y as an ethylenically unsaturated group selected from the group consisting of H 2 C═CR—CO-A-, H 2 C═CR—C 6 H 4 -A 1 -, H 2 C═CR—CH 2 A 2 , R 2 O—CO—CR═CR—CO—O, RCH═CH—CO—O—, RCH═C(COOR 2 )CH 2 —CO—O, A is —O— or NR A A R is hydrogen or C R R B is selected from the group consisting of a bond, and straight and branched alkanediyl, alkylene oxaalkylene, and alkylene (oligooxalkylehe) groups, optionally containing one or more fluorine substituents; X is ammonium phosphonium, or sulphonium phosphate or phosphonate ester zwitterionic group; are polymerised by a living radical polymerisation process in the presence of an initiator, and a catalyst.