Desmodur N3600|WANNATE HT-600|DURANATE TPA-100 Equivalent

Characterization

Aliphatic polyisocyanate (HDI trimer). As the hardener component for lightfast polyurethane coating systems.

Solubility / thinnability

Desmodur® N 3600 can be thinned with esters, ketones, and aromatic hydrocarbons such as ethyl acetate, butyl acetate, PMA, 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 hydroxyl or amino groups). Aliphatic hydrocarbons are unsuitable as solvents.
Desmodur® N 3600 should not be thinned to below a solids content of 40 %. Prolonged solution storage with a lower binder content may result in turbidity and sedimentation.

Compatibility

Desmodur® N 3600 can be mixed with the following products: Aliphatic polyisocyanates like Desmodur® N 100, N 75, N 3200, ultra N 3300, N 3400 and Desmodur® Z 4470; aromatic polyisocyanates like Desmodur® L/ultra L, HL and IL/ultra IL; polyester polyols such as Desmophen® 670 and polyacrylates. However, the compatibility of the combinations used should be tested.
Desmodur® N 3600 is incompatible with branched polyester polyols such as Desmophen® 651 or polyether polyols such as Desmophen® 1380 BT.

Properties / Applications

Desmodur® N 3600 is primarily the hardener component for lightfast two-component polyurethane coatings with high chemical and weather resistance, lent gloss retention, and outstanding mechanical properties. Preferred co-reactants are polyacrylate or polyester polyols.
The main applications for systems based on Desmodur® N 3600 are air- and force-drying coatings for automotive OEM, automotive refinishing, transportation, industrial finishing, and plastics.
Because of its low viscosity, Desmodur® N 3600 is particularly suitable for formulating high-solids coatings. It can also be used as the hardener for aqueous two-component polyurethane coatings.

INDEX

Property	Value	Unit of measurement	Method
NCO content	23.0 ± 0.5	%	DIN EN ISO 11 909
Viscosity at 23℃	1,200 ± 300	mPa·s	DIN EN ISO 3219/A.3
Color value (Hazen)	≤40		DIN EN 1557
Monomeric HDI	<0.25	%	DIN EN ISO 10 283
Viscosity at 25℃	approx. 1100	mPa·s	DIN EN ISO 3219/A.3
Equivalent weight	approx. 183
Flash point	approx. 158	℃	DIN 22 719
Density at 20℃	approx. 1.16	g/ml	DIN EN ISO 2811

Storage

Recommended storage temperature: 10 - 30 °C. Protect from moisture, heat, and foreign material.

NOTICE

The product is sensitive to moisture and should therefore be stored in tightly sealed containers. Storage at elevated temperatures will lead to an increase in viscosity and a reduction of the NCO content.