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RC (TDI-bases polyisoyanurate CAS No. 26471-62-5 )
Chemical Name: TDl-based polyisocyanate
CAS No.: 26471-62-5
Character: Substitute for Desmodur RC
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DDI (Dimeryl Diisocyanate) CAS No. 68239-06-5 DDI
Dimeryl Diisocyanate
DDI
CAS No. 68239-06-5
Chemical Name: Dimeryl Diisocyanate
Synonyms: 2-Heptyl-3,4-bis(9-isocyanatononyl)-1-pentylcyclohexane
Code: DDI
CAS No.: 68239-06-5
Product Description
DDl is a unique aliphatic diisocyanate which is long-chain compound with a 36-carbon dimer fatty acid.lt gives DDl superior flexibility, water resistance and low toxicity compared to other aliphatic isocyanates.
DDl is a low viscosity liquid that can easily soluble in most polar or non-polar solvents. Based onaliphatic isocyanate,it has the characteristics of non-yellowing.
Product properties & Features
DDl with the advantages of low toxicity, easy to use, soluble in most solvents, controllable reaction time and low water sensitivity. lt is a typical green biorenewable special isocyanate variety, which can be widely used in fabric finishing,elastomers, adhesives, sealants, coatings, inks and other military or civil fields.
Specification | Relative molecular weight | NCO content, % | Hydrolysable chlorine, % | Steam pressure, mmHg | Melting point, ℃ | Toxicity |
DDI | 600 | 13.6 ~ 15.0 | ＜0.05 | ＜0.001（25℃） | -34.4 | low toxicity |
IPDI | 222.2 | 37.8 | 0.02 | 0.003(20℃） | -60 | middle toxicity |
TDI | 174 | 48.3 | 0.01 | 0.042(20℃） | 5 ~ 6.5 | highly toxicity |
MDI | 250.26 | 33.6 | 0.05 | - | 38 | middle toxicity |
Applications
1. Fabric: our DDI with water easily to be aqueous emulsion, which made the fabric be smooth, gentile, and water-proof.
2. PU resin and Polyurea resin, using DDI can be with preformance of non-yellowing, excellent resilience, and extensile, high rigid, low water sensible, and better anti-abrasivenesss, anti-chemical solvent , and anti-low temperature.
3. React with HTPB to be excellent compatibility and reactivity, the produced PU can be extraordinary low rigid, no need plastic agent.
4. Coating: DDI polyurea coating with excellent tensile strength and weather proof, which are easily adhered to metal and wood without fracture.
Packing & Storage
50kg/plastic drum or 190kg/metal drum packaging.
Storage should be cool, dry and ventilated.
The shelf life is 12 months, after the expiration of the re-inspection can still be used. Avoid rain and sun during transportation. Do not mix with strong oxidants.
Technical Index
| Item | Index |
| Appearance | Colorless and transparent oily liquid |
| lsocyanate content, % | 13.60~15.00 |
| Hydrolytic chloride, % | ≤0.05 |
| PH value | 3.0~7.0 |
| Moisture, % | ≤0.02 |
| Viscosity, mPa.s, 20°C | ≤170 |
*NOTE: The company can develop the new DDl according to the special demand of our clients.
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