abstract |
The invention concerns a water-redispersible powder composition and comprising: at least a water-soluble film-forming polymer, said polymer (a) being prepared from at least an ethylenically unsaturated monomer; and at least a naphthalenesulphonate (b) of general formula (I), wherein: X and X', identical or different, represent OH or NH2; Y represents SO3<->,M<+>, M being an alkaline metal; x >/= 0, x' >/= 0 and x + x' >/= 1; y >/= 0, y' >/= 0 and y + y' >/= 1. |