Until now, the starting temperature of max. 230 °C has been limited expandable graphite for the use in high-temperature polymers such as polyamide. With our new generation expandable graphite GHL PX 95 HT 270, we have been able to develop a new expandable graphite quality that shows its protective characteristic from 270°C. Concerning the known product parameters of purity, pH value, particle size and expansion volume, no compromises have to be made with this expandable graphite quality either. Therefore, expandable graphite can now be used for polyamides and applications with processing temperatures up to 260°C.