Flame retardant polymer compositions comprising a particulate clay mineral

摘要

A flame retardant polymer composition having acceptable char strength and optionally also drip resistance comprises a polymer and a particulate clay mineral distributed in the polymer composition at a particle number per unit volume of at least about 1 particle per 100 mum³, provided that the clay mineral present at the said particle number per unit volume is not an organomontmorillonite. The composition preferably further contains alumina trihydrate (ATH) and/or another flame retardant.