Patent ID: 7790079

Claim:
A process for the preparation of a moulding material or a moulding, comprising: melting a thermoplastic polymer; adding nanoscale inorganic particles and a solubilizer having a supercritical state to the molten thermoplastic polymer; mixing the molten thermoplastic polymer with the added nanoscale inorganic particles and solubilizer having a supercritical state to obtain a molten mixture of the thermoplastic polymer, nanoscale inorganic particles and solubilizer having a supercritical state; mixing the obtained molten mixture with in an extruder with a screw transport, wherein a temperature and pressure of the mixing are such that the solubilizer is in the supercritical state and the mixture is molten; transporting the molten mixture to an exit of the extruder having a passage of less than 20 μm; subjecting the molten thermoplastic polymer nanoscale inorganic particle, supercritical solubilizer mixture to a high shear of from 10,000 to 100,000 s −1 by passing through the passage of less than 20 μm into a flash zone; and discharging the melt with the incorporated nanoscale inorganic particles, comminuted after cooling from the flash zone to give a moulding material or transferring the melt with incorporated nanoscale particles from the flash zone into a shaping processing tool and shaping the transferred melt to give a moulding.