Abstract: The invention relates to an aqueous polymer dispersion, with said polymer comprising, in its structure, monomer units incorporated from a composition of monomers comprising: a) at least one (meth)acrylic monomer which is a C1-C18 (meth)acrylic ester, without any ionic group, b) at least one ethylenically unsaturated monomer carrying at least one carboxylic acid group, c) at least one ethylenically unsaturated monomer carrying a tertiary amine, and with said polymer additionally carrying grafted blocked silane groups in the —Si(OR1)3 or —Si—R2(OR1)2 or —Si—(R2)2(OR1), with R1, R2 being an identical or different C1 to C4 alkyl, and with said grafted blocked silane groups being incorporated by at least one or two routes or their combination. The invention also relates to a coating composition comprising said dispersion of the invention and to its use for aqueous protective coating compositions for wood.

Abstract: The invention concerns a method comprising the steps of irreversibly capturing and trapping at least one organic volatile compound bearing a function among aldehyde, ketone, or amine, using an aqueous polymer dispersion of core/shell structure particles having an MFFT of 0 to 50° C., with the polymer phase P1 being a hard core with a Tg1 of 60 to 120° C. and the polymer phase P2 being a soft shell with a Tg2 of ?20 to 40° C. and with P1, comprising a monomer M1 with two polymerisable ethylenic unsaturations and an ethylenically unsaturated monomer M2 bearing a carboxylic acid/anhydride function and P2, representing 40% to 85% by weight of P1+P2 and comprising in its structure units from at least one monomer M3 bearing a polymerisable ethylenic unsaturation and, in addition, a ureido functional group or a functional group having a mobile hydrogen alpha to a ketonic carbonyl.