hdi low viscosity asahikasei  tma-100   about: the low viscosity trimer that matches standard trimers in curability and weatherability. grade solids (wt%) nco (wt%) viscosity (mpa・s, 25°c) solvents special properties tma-100 100 23.0 1,050 — low viscosity high nco content excellent weatherability resin compatibility tla-100 100 23.3 500 — excellent weatherability low viscosity high nco...