Abstract: The invention relates to an aqueous polymer dispersion which can be obtained from a mixture of monomers comprising, in parts by weight: a) 100 of at least one ethylenically unsaturated monomer not comprising an ionic group, b) 0.5 to 15 of at least one ethylenically unsaturated monomer carrying at least one carboxyl and/or carboxylic anhydride functional group, c) at least one ethylenically unsaturated monomer carrying at least one second functionality selected from: phosphate, phosphonate or phosphinate, in an amount such that the ratio c/(b+c) varies from 0.05 to 0.

Abstract: The invention relates to an aqueous polymer dispersion which can be obtained from a mixture of monomers comprising, in parts by weight: a) 100 of at least one ethylenically unsaturated monomer not comprising an ionic group, b) 0.5 to 15 of at least one ethylenically unsaturated monomer carrying at least one carboxyl and/or carboxylic anhydride functional group, c) at least one ethylenically unsaturated monomer carrying at least one second functionality selected from: phosphate, phosphonate or phosphinate, in an amount such that the ratio c/(b+c) varies from 0.05 to 0.

Abstract: The invention concerns the use in a treating composition for reinforcing porous substrates, of a latex based on polymer particles with diameter ranging between 50 and 200 nm having a proportion of solids ranging between 20 to 60 wt. % and containing acid functions.

Abstract: Substrates having a water-soluble substance subject to migration toward the surface of the substrate are treated or coated with a composition comprising a a latex or solution of a film forming polymer and sufficient imidized maleic anhydride polymer dispersant or emulsifier to inhibit the migration toward the surface of the water-soluble substance. Preferably a styrene-maleic anhydride polymer is imidized with a diamine and is made cationic by neutralizing with an acid. The imidized polymer is preferably the only surfactant or dispersant in the latex composition. Pigment pastes and primers comprising the imidized polymer can be applied to substrates to confer water and alkaline hydrolysis resistance and to prevent the migration of any water soluble substance in the substrate.

Abstract: The invention relates to the films obtained by applying and drying a latex based on special acrylic monomers. These coatings are both flexible and have low surface tack and surface tension. The low tack and hydrophobic nature are provided by the special acrylic monomers. The field of application of the invention is that of the surface coatings industry.