Accelerator DTU (Diethylthiourea)
CAS Number: 534-07-6
Diethylthiourea (DTU) is a thiourea-type accelerator primarily used for the vulcanization of polychloroprene (neoprene) and chlorosulfonated polyethylene (CSM) rubbers. It provides fast cure rates without requiring sulfur and produces excellent heat and ozone resistance in the cured compound. DTU is often used in combination with magnesium oxide and zinc oxide for optimized cure systems in CR-based cables and industrial goods.
Technical Specifications
| ash (%) | ≤0.30 |
| appearance | White to light yellow powder |
| purity (%) | ≥98.0 |
| moisture (%) | ≤0.30 |
| melting point (°C) | 76–79 |
Applications
- Polychloroprene (CR/neoprene) cable sheathing
- CSM rubber roofing membranes
- CR-based industrial hoses and seals
- Neoprene adhesive compounds
- Fire-resistant rubber conveyor belts
Key Features
- Sulfur-free accelerator for CR and CSM systems
- Fast cure rate at moderate temperatures
- Excellent heat and ozone resistance in vulcanizates
- Compatible with MgO/ZnO cure systems
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