AQUEOUS SELF-CROSSLINKABLE POLYMER DISPERSION MADE FROM HARD-CORE, SOFT-SHELL STRUCTURED POLYMER PARTICLES, AND COATING OR TREATMENT COMPOSITIONS

摘要

The present invention relates to an aqueous polymer dispersion, which comprises particles structured in hard / hard shell / bark, with the polymer phase of the core P1 having a glass transition temperature Tg1 of 60 to 120 ° C, the polymer phase of the bark P2 having a glass transition temperature Tg2 of -20 to 40 ° C, the minimum TMF filming temperature of 0 to 50 ° C, with the P1 phase representing 15 to 60%, by weight relative to the total weight of P1 + P2, the phase P1 comprising at least one monomer M1 having at least two copolymerizable ethylenic unsaturations and at least one ethylenically unsaturated monomer M2 bearing at least one carboxylic acid and / or anhydride function, the P2 phase representing 40 to 85% , by weight of the total of P1 + P2 and with said phase P2 comprising: at least one monomer M3 selected from the monomers carrying in addition to the polymerizable ethylenic unsaturation, at least one group selected from acet oacetoxy, diacetone, methylol, or alkoxysilane. The invention also relates to protective and / or decorative coating compositions among paints, varnishes, stains, inks or adhesives and fiber treatment compositions.