of 190 u00b0 c the remaining components then were added and the composition was fluxed for 5 minutes a control typical of a commercial prior art platable propylene polymer composition was prepared in the same manner the control formulation contained 100 parts of the propylene polymer 48 parts of the conductive carbon black 0 32 part of elemental sulfur 0 32 part of benzothiazyl disulfide a sulfur donor and 6 0 parts of zinc oxide table i__________________________________________________________________________ composition no component 1 2 3 4 5 6 7 8 9__________________________________________________________________________propylene polymer a 100 100 100 100 100 100 100 100 100acetylene carbon black b 56 56 56 56 56 56 56 56 56elemental sulfur 2 4 2 4 2 4 2 4maleic anhydride modified 2 4 3 2 4 0 6 0 8 0 2 4 4 0 6 0propylene polymer c __________________________________________________________________________ a molding grade high impact resin containing 75 wt of isotactic propylene homopolymer 12 5 of high density ethylene homopolymer and 12 wt of an ethylene propylene elastomer b vulcan xc72 supplied by cabot corporation c prepared by the process disclosed in british patent 1 101 408 and containing about 3 5 wt chemically combined maleic anhydride sample discs 1 8.