SHENZHEN FEIYANG PROTECH CORP.,LTD
| Payment Terms | L/C, T/T |
| Supply Ability | More than 20000 tons per year |
| Delivery Time | 7 days after order confirmed |
| Packaging Details | 200kg/drum |
| Model | N3900 |
| Desmodur® N 3400 is used primarily as a reactive thinner or as a hardener component for | 23.5± 0.5 |
| Viscosity at 23 °C | 730 ±100 |
| Equivalent weight | 179 |
| Flash point | 203 |
| Density at 20 °C | 1.15 |
| Brand Name | COVESTRO |
| Model Number | N3900 |
| Certification | ISO 14001, ISO 19001 |
| Place of Origin | CHINA |
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Product Specification
| Payment Terms | L/C, T/T | Supply Ability | More than 20000 tons per year |
| Delivery Time | 7 days after order confirmed | Packaging Details | 200kg/drum |
| Model | N3900 | Desmodur® N 3400 is used primarily as a reactive thinner or as a hardener component for | 23.5± 0.5 |
| Viscosity at 23 °C | 730 ±100 | Equivalent weight | 179 |
| Flash point | 203 | Density at 20 °C | 1.15 |
| Brand Name | COVESTRO | Model Number | N3900 |
| Certification | ISO 14001, ISO 19001 | Place of Origin | CHINA |
| High Light | ISO 19001 Desmodur N 3900 ，Plastics Coating Desmodur N 3900 | ||
DESMODUR N3900
1. Characterization
Aliphatic polyisocyanate (HDI trimer).
As the hardener component for lightfast polyurethane coating systems.
2. Specification
| Property | Value | Unit of measurement | Method |
| NCO content | 23.5 ± 0.5 | % | DIN EN ISO 11 909 |
| Viscosity at 23 °C | 730 ± 100 | mPa·s | DIN EN ISO 3219/A.3 |
| Color value (Hazen) | ≤ 40 | DIN EN 1557 | |
| Monomeric HDI | < 0.25 | % | DIN EN ISO 10 283 |
| Equivalent weight | approx. 179 | ||
| Flash point | approx. 203 | °C | DIN 22 719 |
| Density at 20 °C | approx. 1.15 | g/ml | DIN EN ISO 2811 |
3. Solubility / thinnability
Desmodur® N 3900 is compatible with the following solvents: ethyl acetate, butyl acetate, PMA, acetone, methyl ethyl ketone, methyl isobutyl ketone, cyclohexanone, toluene, xylene, solvent naphtha® 100 and mixtures thereof. Aliphatic hydrocarbons are not suitable as solvents.
Desmodur® N 3900 should not be thinned below a solids content of 40 % by wt. Prolonged solution storage with a lower solids content may result in turbidity and sedimentation.
4. Compatibility
Desmodur® N 3900 can be mixed with the following Desmodur® and Desmophen® products: Desmodur® N 75, N 100, N 3200, N 3300, N 3390, N 3400, N 3600, and Z 4470;
most polyester-based Desmophen® products such as Desmophen® 670, 680, VP LS 2971, VP LS 2089, VP LS 2107, and with polyacrylates. It is incompatible with Desmophen® 650 and 651.
5.Properties / Applications
Desmodur® N 3900 is used to formulate high-solids systems for automotive refinishing, transportation coating, and plastics coating.
6. Storage
- Storage in original sealed Covestro container.
- Recommended storage temperature: 10 - 30 °C.
- Protect from moisture, heat, and foreign material.
General information: 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.
7. Different Blend Feature with N3900
| Eq.mix ratio | 1/0/1 | 0.75/0.25/1 | 0.5/0.5/1 | 0.25/0.75/1 | 0/1/1 |
| F420 | 61 | 45 | 30 | 15 | 0 |
| F520 | 0 | 16 | 31 | 46 | 60 |
| N3900 | 39 | 39 | 39 | 39 | 40 |
| Total | 100 | 100 | 100 | 100 | 100 |
| Tack Free | 38min | 30min | 1 h 15min | 4 h 45min | >24h |
| Through Cure | 60min | 60min | 3 h | 9 h | >24h |
| Gel time(100g) | 37min | 29min | 44min | 126min | 8 h |
| Pencil hardness | HB(14days) | HB(14days) | HB(14days) | HB(14days) | HB(14days) |
| Shore D hardness | 80 in 1 day | 80 in 1 day | 80 in 1 day | 80 in 1 day | 80 in 3-5 days |
| Mixed viscosity at 25℃, cps | 2038 | 2420 | 2775 | 2220 | 1528 |
Learn polyaspartic knowledge: Polyaspartic FAQ
Company Details
Business Type:
Manufacturer,Distributor/Wholesaler,Importer,Exporter,Other
Year Established:
1992
Total Annual:
80000000-100000000
Employee Number:
200~300
Ecer Certification：
Verified Supplier
Shenzhen Feiyang Protech Corp., Ltd. specializes in researching and producing polyaspartic polyurea resin and other new chemical products. We are recognized as a "National Special New Key Little Giant" and a "State-level High-tech Enterprise", with more than 50 polyaspartic polyu... Shenzhen Feiyang Protech Corp., Ltd. specializes in researching and producing polyaspartic polyurea resin and other new chemical products. We are recognized as a "National Special New Key Little Giant" and a "State-level High-tech Enterprise", with more than 50 polyaspartic polyu...
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