... -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,≤,%0.50Residue on 150 ... μm Sieve, max,%,≤0.10 Properties: This product is the ...