Method for the production of highly filled polymethyl methacrylate based plastics

Abstract

A method for the casting of highly filled plastics containing polymethyl methacrylate, the method involving: preparing a filler suspension by combining from 30 to 80 wt %, based on the amount of filler suspension, of at least one particle-shaped, inorganic filler with a polymer precursor under high-speed stirring, wherein the polymer precursor is made from methyl methacrylate and a polymethyl methacrylate prepolymer, wherein the filler suspension further contains from 1 to 20 parts by weight, based on the amount of filler suspension, of a colored, filled, comminuted polymer material having a density precisely adapted to the density of the filler suspension and wherein the comminuted polymer material contains a polymer component which is highly crosslinked; and polymerizing the filler suspension by contacting the filler suspension with at least one radical initiator.

Dependencies are inferred from the claim text.