Covestro Desmodur ultra N3690 BA/SN slow drying curing agent ultra-low free monomer strong adhesion

Type Fat Family polyisocyanate(HDI trimer) Supply form Approx. 90% butyl acetate/No. 100 solvent naphtha (1:1) solution Purpose at Used as a curing agent component in light-resistant polyurethane coatings Specifications Features Value Measurement units Method NCOContent 20.7±0.5 % M105-ISO11909 Non-volatile content (2.2g/120min/100°C） mPa·s M014-ISO3219/A.3 Equivalent approx. 203 Flashpoint Approx. 58 °C DIN53213 Density@20°C approx. 1.13 g/ml…