| 摘要 |
The present invention provides aqueous copolymer dispersions obtainable by aqueous emulsion polymerization at least of monomers a) and b) and by subsequent addition of at least one cycloalkylepoxysilane to the resulting copolymer emulsion, monomer a) being an ester of .alpha.,.beta.-monoethylenically unsaturated carboxylic acids containing 3 to 6 carbon atoms and alkanols containing 1 to 18 carbon atoms and, if desired, a vinylaromatic compound, or a mixture of these monomers, and monom er b) being a monobasic or polybasic .alpha.,.beta.-monoethylenically unsaturat ed acid and/or anhydride thereof. The copolymer dispersions of the invention are suitable for producing coatin gs which are distinguished by increased tensile stress after the coating has been stretched.
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