Product Overview
DOTP (Dioctyl Terephthalate) is a high-performance environmentally friendly plasticizer widely used in PVC processing and polymer formulations. It is considered an effective alternative to traditional phthalate plasticizers due to its low toxicity, excellent stability, and strong environmental compliance.
DOTP provides outstanding thermal stability, flexibility, electrical insulation, and resistance to migration, making it suitable for applications where long-term durability and safety are required.
Due to its compliance with international regulations such as REACH, DOTP is commonly used in medical products, food-contact materials, cables, and consumer goods where safer plasticizers are required.
Key Features of DOTP
Environmental Protection and Safety
DOTP is phthalate-free and complies with global safety regulations such as EU REACH and other hazardous substance restrictions. This makes it safer for both human health and the environment, particularly in applications involving food packaging and medical devices.
Excellent Thermal Stability and Cold Resistance
DOTP demonstrates strong performance across a wide temperature range.
- High temperature resistance: Flash point above 210°C, making it suitable for applications such as 70°C rated cables.
- Low-temperature flexibility: Solidification point as low as −48°C, allowing materials to remain flexible in cold environments.
Low Volatility and Migration Resistance
Compared with conventional plasticizers such as DOP, DOTP shows lower volatility and improved resistance to plasticizer migration. This helps reduce aging effects in polymer materials and ensures long-term stability of PVC products.
Good Electrical Insulation Properties
DOTP offers excellent electrical insulation performance, with volume resistivity reaching 1 × 10⁹ Ω·m or higher. This makes it particularly suitable for wire and cable insulation materials, ensuring reliable electrical safety.
Chemical Resistance and Durability
DOTP demonstrates strong resistance to water, oils, and soap extraction, improving the durability and service life of materials used in humid or chemically exposed environments.
Main Application Areas
Wire and Cable Insulation
DOTP is widely used as a plasticizer for high-temperature resistant cables, especially 70°C rated cables. Its low volatility and excellent electrical insulation properties make it suitable for power transmission and communication cable sheathing materials.
Automotive Industry
In the automotive sector, DOTP is used in:
- Interior components such as dashboard panels and door trims
- Automotive seals and wiring harness materials
It helps improve heat resistance and low-temperature flexibility, while also reducing window fogging, improving driving safety.
Construction and Building Materials
DOTP is commonly used in PVC-based building materials, including:
- PVC flooring
- Roofing membranes
- Decorative wallpaper
- Pipes and window profiles
These materials benefit from improved weather resistance, durability, and flexibility.
Medical and Consumer Products
Due to its low toxicity and good biocompatibility, DOTP is widely used in:
- Medical devices such as infusion bags and medical tubing
- Consumer products including toys and food packaging materials
These applications require compliance with strict safety regulations.
Synthetic Materials and Industrial Products
DOTP is also used in:
- Synthetic leather production
- Coatings and adhesives to improve flexibility and durability
- Rubber formulations (e.g., NBR) as a softening agent to improve processability
Comparison: DOTP vs Traditional Plasticizer DOP
| Property | DOTP | DOP (Traditional Plasticizer) |
|---|---|---|
| Environmental Safety | Phthalate-free, safer and more environmentally friendly | Contains phthalates with potential environmental and health concerns |
| Thermal Stability | Higher flash point (~210°C) | Lower flash point (~190°C) |
| Low-Temperature Flexibility | Solidification point around −48°C | Slightly less stable at low temperatures |
| Electrical Insulation | Higher volume resistivity (~4.6 × 10¹¹ Ω·cm) | Lower resistivity (~1.9 × 10¹¹ Ω·cm) |
DOTP is increasingly replacing traditional plasticizers in industries requiring environmentally compliant and high-performance materials.
