Method for producing amino methylated bead polymerizates

A process for preparing aminomethylated bead polymers, the process comprising:

• a) converting monomer droplets comprising at least one monovinylaromatic compound, at least one polyvinylaromatic compound, and at least one initiator to a bead polymer,
• b) contacting the bead polymer with:
• at least one compound of the formula (I) or salts thereof
• where R1=C1-C3-alkyl or H, and
• at least one compound of the formula (II) or the cyclic condensates thereof
• where n=2 to 100,
• in a reaction mixture comprising at least one Friedel-Crafts catalyst, at least one aliphatic saturated or unsaturated carbonyl halide, and additional aliphatic saturated or unsaturated carboxylic acids,
• to give a phthalimidomethylated bead polymer, and
• c) hydrolyzing the phthalimidomethylated bead polymer to give an aminomethylated bead polymer.