A process for preparing antistatic expandable, thermoplastic polymer particles

A method for the production of antistatic, expandable, thermoplastic polymer particles, by mixing and forming a polymer melt from the components A) from 45 to 97.8 wt .-%, preferably from 55 to 78.1 percent by weight of a styrene polymer, B1) 1 to 45 wt .-%, preferably 7 to 15 weight percent of a polyolefin with a ermitteltem at a heating rate of 10 ° C / minute by DSC melting point in the range of 105 to 140 ° C, B2) 0 to 25 wt .-%, preferably 5 to 10 weight percent of a polyolefin with a ermitteltem at a heating rate of 10 ° C / minute by DSC melting point below 105 ° C, C1) 0.1 to 25 wt .-%, 6 to 15 weight percent of a styrene-butadiene or styrene-isoprene block copolymers, C2) from 0.0 to 10 wt .-%, preferably 0.8 to 3 weight percent of a styrene-ethylene-butylene block copolymers, D) 1 to 15 wt .-%, preferably 3 to 10 weight percent of a propellant, E) 0 to 5 wt .-%, preferably 0.3 to 2 weight percent of a nucleating agent, and F) 0.1 to 5 wt .-%, preferably 1 to 3 wt .-% of an antistatic agent, wherein the sum of A) to F) is 100 wt .-% results, and Extruding the polymer melt through a die plate with subsequent underwater pelletization, obtainable by the process, antistatic, expandable, thermoplastic polymer particles and their processing equipped to antistatic particle foam moldings.