These alicyclic acid anhydride type hardeners have less toxicity, have longer pot life and have lower exothermic characteristics, in comparison with amine type hardeners. These applications for epoxy resins extend over to casting, impregnation, lamination and many others.

Features

• Liquid hardeners easy to mix with epoxy resins.
• Less toxicity than amine type hardeners.
• Epoxy resin compounds having a long pot life.
• Cured epoxy resins with MHAC show excellent heat resistance.

Characteristics

	HN−2200	HN-2000	HN−5500	MHAC
Chemical name	3 or 4-methyl-1,2,3,6- tetrahydrophthalic anhydride	3 or 4 methyl-1,2,3,6-tetrahydrophthalic anhydride	3 or 4-methyl- hexahydrophthalic anhydride	Methyl-3,6-endomethylene- 1,2,3,6-tetrahydrophthalic anhydride
Molecular formula	C9H10O3	C9H10O3	C9H12O3	C10H10O3
Structural formula
Molecular weight	166	166	168	178
Appearance	Colorless transparent liquid	Colorless transparent liquid	Colorless transparent liquid	Light-colored transparent liquid
Gardner color scale	<1	<1	<1	<2
Viscosity (mPa·s,25 °C)	50 ~ 80	30 ~ 50	50 ~ 80	150 ~ 300