application:
methyl tetra-hydro phthalic anhydride (mthpa) was used in the curing agents for epoxy resins, dry-type transformers, high voltage switches, mutual inductors, condensers, led, etc. relative to the general mthpa, this specification have the following characteristics:
①light color when curing ,suitable for white or colorless transparent products;
②good heat resistance, higher tg point.
③faster curing speed , saving the amount of promoter;
④larger viscosity, moisture absorption higher than the general mthpa, shall be sealed.