DP 065 is pure Diaminodiphenyl Methane (MDA) and contains at least 99% of 4 4'-MDA and few of 2,4'-MDA. Molecular weight is 198.26, at room temperature, it is white to yellowish crystal. Dp 065 series product is an important chemical industry intermediate. Besides being used in producing MDI and HMDI, it is widely used in PI, PEI, epoxy resin hardener, performance thermoplastic, chain extender of PU elastomer etc. The products synthesized with it have excellent properties of mechanics, electrical-insulation, heat-resisting, radiation-resisting and abrasion-resisting.
PG H-641 is a medium viscosity modified aromatic amine based on 4,4’-diamino diphenyl methane. It is suitable to cure epoxy resin at ambient temperature. It offers superior chemical resistance to acids, alkali and organic solvents when cured with modified and unmodified epoxy resins based on bisphenol-A and F. It offers very slow reactivity and long pot life at ambient temperature.
PG H-642 is a modified aromatic amine hardener based on 4,4’-diamino diphenyl methane. It is suitable for curing epoxy resin at ambient temperature. It offers superior chemical resistance to acids, alkali and organic solvents when cured with modified and unmodified epoxy resins based on bisphenol-A and F. It offers very faster reactivity and short pot life at ambient temperature.
PG H-649 is a low viscosity modified aromatic amine based on 4,4’-diamino diphenyl methane. It is suitable to cure epoxy resin at ambient temperature. It offers superior chemical resistance to acids, alkali and organic solvents when cured with modified and unmodified epoxy resins based on bisphenol-A and F. It offers long pot life at ambient temperature.