| abstract |
Particulate graft polymer comprising 30 to 90% by weight of at least one elastomeric graft base A with a weight-average particle size of 30 to 1000 nm, based on A, 85 to 99.8% by weight of at least one alkyl acrylate A11 with 1-8 C atoms in the alkyl radical, 0.1 to 5% by weight of at least one polyfunctional, crosslinking monomer A12 and 0.1 to 10% by weight of at least one hydroxyalkyl acrylate or methyl acrylate A13 or at least 50% by weight of one or more dienes A111, up to 50% by weight of one or more ethylenically unsaturated monomers A112 and 0.1 to 10% by weight of at least one hydroxyalkyl acrylate or methacrylate A113 and 10 to 70% by weight of a graft shell B, based on B, up to 99.9% by weight of at least one vinylaromatic monomer B1, up to 99.9% by weight of at least one polar, copolymerizable, ethylenically unsaturated monomer B 2 and 0.1 to 20% by weight of at least one monomer B3 containing one or more basic or acidic groups. |