... HVA-2 (PDM) 1. Yellow or brown powder N,N'-m-Phenylene Bismaleimide rubber vulcanizator agent HVA-2 (PDM) Specifications ItemsSpecificationsAppearanceYellow ... ,°C,≥198.0Heat Loss,%,≤0.50Ash,≤,%0.50Residue on 150μm Sieve, max,%,≤0.10 Properties: This product is the proportion ...