Coating compositions for poly(alkylene) polymers

Chlorine-free coating composition, comprising an aqueous polymer latex, derived from at least (a) vinyl esters of , -branched carboxylic acids, having from 9 to 15 carbon atoms in the acid moiety, in a proportion of from at least 80 wt% relative to the total weight of (co)monomers, (b) a stabilizing comonomer selected from acrylic acid, optionally -substituted with an alkyl group having from 1 to 4 carbon atoms, in a proportion of from 0.1 to 1 wt%, relative to thetotal weight of (co)monomers, and optionally (c) an apolar and/or soft comonomer selected from alkyl acryate esters, triacrylic esters, diacrylic esters, divinyl esters, and the reaction product of a mono-glycidyl ester of an , -branched carboxylic acid, containing from 5 to 15 carbon atoms in the acid moiety, and an acrylic acid which is optionally -substituted with an alkyl group having from 1 to 4 carbon atoms, in substantially equimolar amounts (to be further mentioned ACE in the specification), and mixtures of said comonomers, in a proportion of from 0 to 20 wt%, relative to the total weight of comonomers, wherein the (co)polymer has an Mw of from 10,000 to 1,000,000, and the polymer latex being mixed with a wetting agent, and optionally mixed with an apolar polyisocyanate derivative, and poly (alkylene) substrates bearing these chlorine-free coating compositions, in wet or in dried/cured form.