Features?contains hexamethylene diisocyanate (HDI) low viscosity Aliphatic polyisocyanate resins as curing agents for weather-resistant coating systems

Supply Form?100%

Specifications

Features	Value	Measurement unit	Method
NCOcontent	23.5?±?0.5	%?(by weight)	M105 -ISO 11909
Viscosity,23°C	730?±?100	DIN 22 719
Density	about?1.15	g/ml	DIN EN ISO 2811

*This data is General information.

Features/Applications
Desmodur? N3900Suitable for preparing high solids systems for automotive refinishing, transportation coatings and plastic coatings.

Compatibility
Desmodur? N3900Can be used with the followingDesmodur?andDesmophen?Mixed use of series products:Desmodur? N75,?N100、N3200,?N3300,N3390?,N3400、?N3600andZ4470; most polyester typeDesmophen?series products, such as:Desmophen? 670,680,VPLS2089andVPLS2107?and acrylics.?Desmodur? N3900withDesmophen? 650?and?651Incompatible.

Solubility/Dilution
Desmodur? N3900Compatible with the following solvents: ethyl acetate, butyl acetate, propylene glycol methyl ether acetate, acetone, methyl isobutyl ketone, cyclic Hexanone, Toluene, Xylene,?naphtha? 100?Menthal spirit and its mixed solvent. Aliphatic hydrocarbon solvents should not be used.?Desmodur? N3900Dilution to solid content below40%. Solvents with low binder content should not be stored for long periods of time, as this can lead to cloudiness and sedimentation.

Save
–?Store in original Covestro airtight containers.
–?Recommended storage temperature:0-30°C

2.0pt”>Desmodur? N3900withDesmophen? 650and651Incompatible.

Solubility/Dilution
Desmodur? N3900Compatible with the following solvents: ethyl acetate, butyl acetate, propylene glycol methyl ether acetate, acetone, methyl isobutyl ketone, cyclic Hexanone, Toluene, Xylene,?naphtha? 100?Menthal spirit and its mixed solvent. Aliphatic hydrocarbon solvents should not be used.?Desmodur? N3900Dilution to solid content below40%. Solvents with low binder content should not be stored for long periods of time, as this can lead to cloudiness and sedimentation.

Save
–?Store in original Covestro airtight containers.
–?Recommended storage temperature:0-30°C