Patent ID: 7473730

Claim:
A method for depositing a polymer onto a surface, comprising the step of applying a composition comprising said polymer onto the surface, wherein the composition comprises a diblock (blockA)-(block B) copolymer (a), wherein: block A comprises repeating units deriving from monomers selected from the group consisting of: trimethylammonium ethyl(meth)acrylate chloride, trimethylammonium ethyl(meth)acrylate methyl sulphate, dimethylammonium ethyl(meth)acrylate benzyl chloride, 4-benzoylbenzyl dimethylammonium ethyl acrylate chloride, trimethyl ammonium ethyl(meth)acrylamido chloride, trimethyl ammonium propyl(meth)acrylamido chloride, vinylbenzyl trimethyl ammonium chloride, diallyldimethyl ammonium chloride, mixtures thereof, and macromomonomers deriving therefrom; block B is a neutral block in the pH conditions of the formulation; and block B comprises units deriving from a mono-alpha-ethylenically-unsaturated monomers.