NCO content 19.6 0.3 % M105-ISO 11909 Non-volatile content (2.2 g / 120 min / 100 C) 90 1 % M020-ISO 3251 Viscosity at 23 C 500 150 mPas M014-ISO 3219/A.3 Color value (Hazen) 40 M017-EN 1557 Monomeric HDI <0.10 % M106-ISO 10283
1.13 Gram per millilitre (g/mL)
Desmodur ultra N 3390 BA can be thinned with esters, ketones and aromatic hydrocarbons such as ethyl acetate, butyl acetate, methoxypropylacetate, acetone, methyl ethyl ketone, methyl isobutyl ketone, cyclohexanone, toluene, xylene, solvent naphtha 100 and mixtures thereof. Generally speaking, it has good compatibility with the solvents listed. However, the solutions formed must be tested for their storage stability. Only PU grade solvents should be used (max. 0.05 % water, absence of reactive groups such as hydroxyl or amino groups). Aliphatic hydrocarbons are unsuitable as solvents. Desmodur ultra N 3390 BA should not be thinned to below a solids content of 40 %. Prolonged storage of a solution with a lower binder content may result in turbidity and sedimentation
Aliphatic polyisocyanate (HDI trimer). As the hardener component for lightfast polyurethane coating systems
approx. 90 % in n-butyl acetate
Desmodur N 3390 BA (90%)
The product is used mainly as a hardener in coating materials oradhesives. The handling of coating materials or adhesives containing reactivepolyisocyanates and residual monomeric HDI requires appropriate protectivemeasures referred to in the safety data sheet. These products may thereforebe used only in industrial or trade applications. They are not suitable for usein homeworker (DIY) applications.