hdi low viscosity asahikasei  tul-100   about: product class: isocyanate duranate tul-100 by asahi kasei is hexamethylene diisocyanate (hdi) trimer with extra-low viscosity and high nco content. acts as a curing agent for urethanes. exhibits excellent weatherability, good chemical & abrasion resistance, good compatibility and drying properties. shows excellent color retention and outstanding performance. duranate tul-100...