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Product Details:
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| NCO Content: | 23.0% ± 0.5% | Viscosity At 23 °C: | 1,200mPa·s ± 300mPa·s |
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| Color Value (Hazen): | ≤ 40 | Monomeric HDI: | < 0.25% |
| Viscosity At 25 °C: | Approx. 1100mPa·s | Equivalent Weight: | Approx. 183 |
| High Light: | Desmodur N 3600 Polyurethane Resin,HDMI Hardener Polyurethane Resin,ISO 19001 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 | 23.0 ± 0.5 | % | DIN EN ISO 11 909 |
| Viscosity at 23 °C | 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 °C | approx. 1100 | mPa·s | DIN EN ISO 3219/A.3 |
| Equivalent weight | approx. 183 | ||
| Flash point | approx. 158 | °C | DIN 22 719 |
| Density at 20 °C | approx. 1.16 | g/ml | DIN EN ISO 2811 |
3. Solubility
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.
4. Thinnability
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.
5. Compatibility
Generally speaking, 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.
6.Properties
Desmodur® N 3600 is primarily 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.
7. Applications
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.
8. 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.
Learn polyaspartic knowledge: Polyaspartic FAQ
A polyurethane resin is the result of the chemical reaction between a polyol resin (also known as “Part A”) and a hardener or curing agent (also known as “Part B”). The chemically reactive material in the hardener is called the polyisocyanate curing agent, which becomes an integral part of the polyurethane polymer when mixed with the polyol resin. The polyisocyanate curing agents commonly used in two-pack coatings are made from various diisocyanate monomers. This diisocyanate monomer generally represents less than 0.2% of the total formula when made up of typical two-pack polyurethane coatings. In the poly-isocyanate polymerization process, less than 0.5% remains as a diisocyanate monomer. Although present at deficient levels, the diisocyanate monomer can pose health risks if the polyurethane paint is mishandled. It is important to note that the risks associated with the diisocyanate monomer should be balanced with risks in using alternative curing agents and applying any solvent-borne coating. The user must always follow their respective State Spray Painting Regulations (Qld, NSW, ACT, Vic, Tas, SA, WA & NT) and wear a well-fitting, positive-pressure, air-fed full-face respirator: overalls, safety shoes, and solvent-resistant gloves to spray isocyanate-containing products safely.
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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. |
or Send Us an Email: marketing@feiyang.com.cn, feiyangjunyan@gmail.com
Or Send Us an Email: marketing@feiyang.com.cn, feiyangjunyan@gmail.com
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