Structural Comparison

• DSTDP — 카스 693-36-7 | MW 683.2 g/mol | C18 stearyl chains | MP 64–67°C
• DLTDP — 카스 123-28-4 | MW 514.8 g/mol | C12 lauryl chains | MP 38–42°C

Performance Differences

Volatility and Thermal Stability

DSTDP's higher MW results in significantly lower volatility at processing temperatures. For polymers processed above 200°C—automotive PP, engineering compound extrusion, cable jacketing—DSTDP is the preferred grade.

Long-Term Heat Aging

Both perform comparably in long-term thermal aging at moderate temperatures. At elevated service temperatures (>100°C continuous), DSTDP shows better retention due to lower volatility from the polymer matrix.

Application Selection Guide

• Processing temperature >200°C → DSTDP preferred
• Thin films or fibers → DSTDP (less migration risk)
• 처리 온도 <200°C → DLTDP viable
• Cost-sensitive applications with moderate temperature demands → DLTDP
• 자동차, pipe, wire/cable → DSTDP standard

Cost Considerations

DLTDP is typically lower cost per kg than DSTDP. For applications where either grade meets performance requirements, DLTDP may offer cost savings. For high-temperature or premium applications, the performance advantages of DSTDP generally justify the price premium.

자주하는 질문

Can I substitute DSTDP with DLTDP?
In many standard polyolefin applications, yes—but verify through thermal aging and processing trials before changing. For high-temperature applications (>220°C processing), substitution may reduce long-term performance.

썬켐에 문의하세요

SUNCHEM supplies both DSTDP and DLTDP. Request samples of both grades to compare in your formulation. 저희에게 연락하십시오 for pricing and documentation.