Dishwashing agent and method for production thereof

Machine dishwashing agents containing

• a) 1 to 99.9% by weight of builder(s), and
• b) 0.1 to 70% by weight of copolymers of
  • i) unsaturated carboxylic acids
  • ii) monomers containing sulfonic acid groups, and
  • iii) optionally further ionic or nonionogenic monomers,

    wherein the copolymer containing sulfonic acid groups is in particulate form, as well as methods of preparing the dishwashing agents.