| abstract |
Impact-resistant resins as a component for impact-resistant polymethacrylate molding compositions are produced by emulsion polymerization by using a reactor with a seed latex, e.g. consisting of an acrylate-methacrylate emulsion polymer, charged and in the presence of an emulsifier, a component containing monomers which are soft with regard to their overall effect is metered in, after reaching a degree of polymerization of 80-95%, the tough phase obtained is transferred to a further reactor and introduced as a harder component without further emulsifier addition or several acrylate and / or methacrylate monomers are added which, in polymer form, have a T λmax of at least 45 ° C. and are polymerized with the addition of an initiator and the dispersion obtained is worked up in a manner known per se. |