ammonium salts preferably the tpv includes in the range of 5 to 50 phr of an acrylate as an auxiliary product suitable acrylates are known from ep a1 0 319 320 u s pat nos 5 208 294 and 4 983 678 reference is made to zinc acrylate zinc diacrylate or zinc dimethacrylate or a liquid acrylate such as trimethylolpropanetrimethacrylate trim butanedioldimethacrylate bdma and ethylenglycoldimethacrylate edma it might be advantageous to use a combination of different acrylates and or metal salts thereof of particular advantage is often to use metal acrylates in combination with a scorch retarder such as sterically hindered phenols e g methyl substituted aminoalkylphenols in particular 2 6 di tert butyl 4 dimethylaminomethylphenol it is possible to incorporate other known additives or compounding agents in the tpv according to the present invention the tpv of the present invention can be formed into free flowing pellets remelted and resolidified without any significant deterioration or deleterious effect on its properties in this respect it differs from elastomers such as pure hxnbr xnbr hnbr and the like after crosslinking these cannot be melted and resolidified the tpv of the present invention is also recyclable a brabender plasticorder was fitted with roller mixing blades and a 369 g capacity bowl mixer bowl temperature fill factor mixing time and roller speed were varied in the first stage of the multipstep mixing procedure the rubber and additives used were mixed with melted nylon in a second step the peroxide was added and dynamic vulcanization occurs the compound was then passed through a 70 u00b0 c mill once to make a flat sheet a preco press was used to compression mould test pieces the compound was added to a.