... Bismaleimide rubber vulcanizator agent HVA-2 (PDM) 1. Yellow or brown powder N,N'-m-Phenylene Bismaleimide rubber vulcanizator agent HVA-2 ... (PDM) Specifications ItemsSpecificationsAppearanceYellow or brown pwderInitial Melting Point,°C,≥198.0Heat Loss,%,≤0.50Ash,≤,%0 ...