Covestro Desmodur N3390 BA/SN HDI trimer curing agent standard light-resistant curing agent
| Type | aliphatic polyisocyanate (hexamethylene diisocyanate trimer) |
| Form of Supply | about90%Butyl acetate/100Solvent naphtha Oil (1:1) solution |
| Purpose | used as light-resistant polyurethane coating curing agent combination |
Product Specifications
| Features | Value | Measurement unit | Method |
| NCOcontent | 19.6±0.3 | % | DIN EN ISO 11909 |
|
Method |
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| Viscosity@25℃ | about500 | mPa.s | DIN EN ISO 3219/A.3 |
| equivalent | about214 | ||
| Flashpoint | about50℃ | DIN 53 213/1 | |
| Density@20℃ | about1.13 | g/ml | DIN EN ISO 2811 |
*The above values are general information and do not belong to the product specification.
Solubility/Dilution
Curing agent N3390 can be used in esters, ketones, and aromatic solvents such as: ethyl acetate, butyl acetate, methoxypropyl acetate, acetone, methyl ethyl ketone, methyl isobutyl Dilute with ketone, cyclohexanone, toluene, xylene, 100# solvent naphtha and their mixture. Miscibility with the above solvents is generally good. However, the storage stability of the prepared solution must be tested. Polyurethane grade solvents should be used (less than 0.05% water, no hydroxyl or amino reactive groups). Aliphatic hydrocarbons are not suitable as solvents.
Curing agent N3390 should not be diluted below 40% solids. For solutions with low base material content, turbidity and precipitation will occur after long-term storage.
Compatibility
Curing agent N3390 is generally miscible with the following products. That is: curing agent N100, N75, N3200, N3400, N3600 and curing agent Z4470 type aliphatic isocyanate; curing agent L, HL and IL type aromatic polyisocyanate; Desmophen 670 type polyester polyol; Desmophen A type polyacrylate. However, the compatibility of the prepared solutions must be tested. Hardener N 3390 is not compatible with branched polyester polyols such as Desmophen 651 or polyether polyols such as Desmophen 550U.
Features/Applications
Curing agent N3390 is mainly used as a curing agent component of light-fast two-component polyurethane coatings, which have excellent chemical resistance and weather resistance, outstanding gloss retention and Excellent mechanical properties. Ideal co-reactants are polyacrylate or polyester polyols.
The coating system formulated with curing agent N3390 is suitable for self-drying or baking, and is used for the finishing of automobile original paint (OEM), automobile repair, transportation, industrial products and plastics.
Save
Curing agent N3390 is sensitive to moisture, so it should be stored in the original airtight container. If stored under normal conditions, this product has a shelf life of at least 6 months.
Security
Flammable, may cause sensitization by skin contact. Harmful to aquatic organisms, may cause long-term adverse effects in the aquatic environment. Contains isocyanates.
Content less than 0.05%, no hydroxyl or amino active groups). Aliphatic hydrocarbons are not suitable as solvents.
Curing agent N3390 should not be diluted below 40% solids. For solutions with low base material content, turbidity and precipitation will occur after long-term storage.
Compatibility
Curing agent N3390 is generally miscible with the following products. That is: curing agent N100, N75, N3200, N3400, N3600 and curing agent Z4470 type aliphatic isocyanate; curing agent L, HL and IL type aromatic polyisocyanate; Desmophen 670 type polyester polyol; Desmophen A type polyacrylate. However, the compatibility of the prepared solutions must be tested. Hardener N 3390 is not compatible with branched polyester polyols such as Desmophen 651 or polyether polyols such as Desmophen 550U.
Features/Applications
Curing agent N3390 is mainly used as a curing agent component of light-fast two-component polyurethane coatings, which have excellent chemical resistance and weather resistance, outstanding gloss retention and Excellent mechanical properties. Ideal co-reactants are polyacrylate or polyester polyols.
The coating system formulated with curing agent N3390 is suitable for self-drying or baking, and is used for the finishing of automobile original paint (OEM), automobile repair, transportation, industrial products and plastics.
Save
Curing agent N3390 is sensitive to moisture, so it should be stored in the original airtight container. If stored under normal conditions, this product has a shelf life of at least 6 months.
Security
Flammable, may cause sensitization by skin contact. Harmful to aquatic organisms, may cause long-term adverse effects in the aquatic environment. Contains isocyanates.