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Product Details:
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| NCO Content: | 21.8% ± 0.3% | Viscosity At 23 °C: | 3,000mPa·s ± 750mPa·s |
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| Color Value (Hazen): | ≤ 40 | Monomeric HDI: | < 0.15% |
| Viscosity At 25 °C: | Approx. 2,500mPa·s | Equivalent Weight: | Approx. 193 |
| High Light: | Hardener Component Isocyanate HT 100,HDI Trimer Isocyanate HT 100 |
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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 | 21.8 ± 0.3 | % | DIN EN ISO 11 909 |
| Viscosity at 23 °C | 3,000 ± 750 | mPa·s | DIN EN ISO 3219/A.3 |
| Color value (Hazen) | ≤ 40 | DIN EN 1557 | |
| Monomeric HDI | < 0.15 | % | DIN EN ISO 10 283 |
| Viscosity at 25 °C | approx. 2,500 | mPa·s | DIN EN ISO 3219/A.3 |
| Equivalent weight | approx. 193 | ||
| Flash point | approx. 228 | °C | DIN 22 719 |
| Density at 20 °C | approx. 1.16 | g/ml | DIN EN ISO 2811 |
3. Solubility / thinnability
Desmodur® N 3300 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 3300 should not be thinned below a solids content of 40 %. Prolonged solution storage with a lower binder content may result in turbidity and sedimentation.
4. Compatibility
Generally speaking, Desmodur® N 3300 can be mixed with the following products: aliphatic polyisocyanates such as Desmodur® N 100, N 75, N 3200, N 3400, N 3600 and Desmodur® Z 4470; aromatic polyisocyanates such as Desmodur® L, HL, and IL; polyester polyols such as Desmophen® 670;
polyacrylates such as the Desmophen® A products. However, the compatibility of the combinations used should constantly be tested.
Desmodur® N 3300 is incompatible with branched polyester polyols such as Desmophen® 651 or polyether polyols such as Desmophen® 1380 BT.
5. Properties / Applications
Desmodur® N 3300 is primarily used as the hardener component for lightfast
two-component polyurethane coatings with high chemical and weather resistance, good gloss retention, and outstanding mechanical properties. Preferred co-reactants are polyacrylate or polyester polyols.
The main applications for systems based on Desmodur® N 3300 are air- and force-drying coatings for automotive OEM, automotive refinishing, transportation, industrial finishing, and plastics.
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.
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| Model | Density (25℃) | Viscosity (mpa.s/25℃) | Solid Content (%) | NCO Content (%) | Type | Features and Applications |
| Desmodur N3300 | approx. 1.16 | approx. 2500 | ≥99 | 21.8±0.3 | HDI trimer | The main applications for systems based on Desmodur N3300 are air- and force-drying coatings for automotive OEM, automotive refinishing, transportation, industrial finishing, and plastics. |
| Desmodur N3600 | approx. 1.16 | approx. 1100 | ≥99 | 23.0±0.5 | HDI trimer | Air- and force-drying coatings for automotive OEM, automotive refinishing, transportation, industrial finishing, and plastics. Particularly suitable for formulating high-solids coatings. It can also be used as the hardener for aqueous two-component polyurethane coatings. |
| WANNATE HT-300 | approx. 1.16 | 200~700 | ≥99 | 19.5~20.5 | HDI trimer | Suitable for self-drying, high solid Content, and solvent-frees, especially for polyaspartic polyurea systems. It can coat original automobile paint (OEM), automobile repair, transportation tools, industrial products, floors, and plastics. |
| WANNATE HT-600 | approx. 1.16 | 900~1500 | ≥99 | 22.5~23.5 | HDI trimer | The main applications for coatings based on WANNATE HT-600 are automotive refinishing, transportation, industrial finishing, and plastics. |
| SP-103P | 1.01 | 100-300 | 60±2(BA) | 3.2-3.6 | IPDI Prepolymer | Dedicated hardener for exterior waterproof topcoat. Adjust flexibility of polyaspartic rigid coating system. Non-yellowing, QUV testing 1500 hours. |
| GB905A-85 | 1.05 | 3000-6000 | 85±2(xylene) | 6.6-7.2 | IPDI Prepolymer | High solid content,short branched-chain, applied in flexible high solid content coating. Improve the flexibility of PU system. |
| GB926-85 | 1.07 | 4000-6000 | 85±2(BA) | 4.9-5.3 | IPDI Prepolymer | High elongation and strength, resist to rain erosion, applied in flexible high solid content coating. Improve the flexibility of PU system. Can be used for windmill blade topcoat. |
| GB951-100 | 1.11 | 1000-2500 | ≥99 | 20.8-21.2 | HDI / Si Prepolymer |
Anti-corrosion coating, improve coating adhesion. |
| GB963A-100 | 1.12 | 1000-2000 | ≥98 | 8.5-9.0 | HDI / Si Prepolymer |
High solid and low viscosity, used for high solid content, solvent-free elastic weather-resistant topcoat, low temperature resistant elastic coating, elastic adhesive. |
| GB-963B-100 | 1.12 | 1000-2000 | ≥99 | 10.0-10.4 | HDI Prepolymer | High solid and low viscosity, used for high solid content, solvent-free elastic weather-resistant topcoat, low temperature resistant elastic coating, elastic adhesive. |
| GB902-100 | 1.12 | 4000-6000 | ≥99 | 8.8-9.4 | HDI Prepolymer | High solid and low viscosity, used for high solid content, solvent-free elastic weather-resistant topcoat, low temperature resistant elastic coating, elastic adhesive. |
| GB930-100 | 1.10 | 200-700 | ≥99 | 19.5-20.5 | HDI Trimer | High solid and low viscosity, used for high solid content, solvent-free topcoat, flooring, weather-resistant topcoat for construction machinery. |
| GB805A-100 | 1.05 | 3000-6000 | ≥98 | 4.7-5.2 | TDI/HMDI Prepolymer | Applied in non-solvent polyaspartic flexible topcoat, flooring topcoat. |
| GB805B-100 | 1.05 | 1500-3000 | ≥98 | 10.3-10.7 | TDI/HMDI Prepolymer | High solid content, low viscosity. Applied in non-solvent flexible waterproof, flooring and sealing materials etc. |
| GB605C-100 | 1.04 | 2000-4000 | ≥98 | 8.1-8.6 | HMDI Prepolymer | High solid content with low viscosity, applied in solvent-free flooring coating, adhesive, edge sealing adhesive etc. |
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