Patent ID: 7285597
Filing Date: 2007-10-23
Classification: C08F,C08L

Abstract:
1. A radical polymerization process for the preparation of a block copolymer, at least one block of which is a polymer of fluorinated vinyl monomer or monomers block, comprising: reacting (A′) one or more ethylenically unsaturated monomers, and (B′) one or more polymers of a fluorinated vinyl monomer or monomers, or a precursor block copolymer, wherein (1′) all or optionally a fraction of (A′) and all or optionally a fraction of (B′) are introduced into a reactor, then (2′) the contents of the reactor are reacted, while introducing therein the optional balance of (A′) and the optional balance of (B′) and the reaction is brought to an end, wherein the precursor block copolymer is prepared by reacting one or more ethylenically unsaturated monomers and one or more polymers of fluorinated vinyl monomer or monomers wherein said polymer of fluorinated vinyl monomer or monomers is a polymer prepared by a process employing (A) one or more ethylenically unsaturated monomers, at least one of which is a fluorinated vinyl monomer (B) molecular iodine, and (C) one or more radical-generating agents selected from the group consisting of a diazo compound, a peroxide and a dialkyldiphenylalkane; which comprises the stages according to which (1) at least a fraction of each of the compounds (A), (B) and (C) is introduced into a reactor, then (2) the contents of the reactor are reacted, while introducing therein the optional balance of each of the compounds (A), (B) and (C) and the reaction is brought to an end.