Akroform® CuDD PM (70) is a polymeric dispersion of copper dimethyl dithiocarbamate in EPR. Akroform® CuDD PM (70) in butyl rubber combines good process safety with a high rate of cure when used with MBT or its derivatives. In EPDM rubbers, CuDD provides an economic modification of the "3 X 0.8 System", and at 1.5 - 2.0 phr, with 0.5 phr MBT, gives fast cure rates and process safety. In SBR, it is the most powerful dithiocarbamate booster for thiazoles/sulfenamides. Not suitable for use in white or light colored compounds as it provides brown pigmentation. However, it is classified as relatively non-staining to other products.