| abstract |
The invention relates to binders based on aqueous acrylate copolymer dispersions for coating compositions, primarily for mineral and bituminous substrates. The binders are particularly suitable for the formulation of more highly pigmented road marking paints.n n n The binders are characterized in that the copolymers obtained by emulsion polymerization consist of monomer segments in one composition (a) 40 to 67% by weight, ethyl acrylate and n-butyl acrylate in a ratio of 3.5: 1 to 1: 2.5 (b) 5 to 20% by weight, hydroxyalkyl acrylates and / or (meth) acrylamide (c) 3 to 5% by weight, (meth) acrylic acid (D) 10 to 15 wt .-%, methyl methacrylate and / or C₁-C₁₀ alkyl ester of maleic or fumaric acid (e) 15 to 30% by weight of vinyl monomers copolymerizable with the monomers (a) to (d), preferably styrene, have, the sum of the percentages of components (a) to (e) must be 100 and the copolymers have a calculated glass transition temperature between -20 ° C and + 30 ° C, preferably between -10 ° C and + 20 ° C. |