Dipentene (Tech grade)

• CAS: 68956-56-9
• Catalog Number: ALC-FP-68956569
• Category: Featured Products
• Boiling Point: 170 - 190 °C
• Appearance: Colorless to yellowish transparent liquid
• Distillation Range: ≥ 95.0% (170 - 190 °C)
• Refractive Index: 1.4600 - 1.4900 (20 °C)
• Relative Density: 0.8450 - 0.8750 (20 °C/20 °C)
• Sample Lot No.: A24Q3606

Case Study

Dipentene for the Synthesis of Modified Sulfur in High-Performance Asphalt Binders

Bai T, et al. Construction and Building Materials, 2022, 343, 128086.

Dipentene was experimentally applied as a reactive modifier to improve the performance of sulfur-modified asphalt systems. In this study, dried elemental sulfur was first combined with a smoke suppressant agent (zinc stearate/zinc hydroxystannate, 1:1 w/w, 0.1 wt% of sulfur) at room temperature. Dipentene was then introduced into the sulfur matrix, and the mixture was heated to 170 °C under oil-bath conditions and sheared at 500 rpm for 1 h to promote molecular interaction between sulfur chains and dipentene, yielding dipentene-modified sulfur (DPS). Subsequently, ethylhexyl acrylate was added, and the system was maintained at 170 °C with continuous stirring for an additional 2 h to ensure homogeneous dispersion and further stabilization of the sulfur network. The resulting modified sulfur was cooled to room temperature and incorporated into asphalt binders. The dipentene-modified sulfur significantly enhanced moisture resistance and low-temperature crack resistance while maintaining satisfactory high-temperature and fatigue performance, demonstrating dipentene's effectiveness as a sulfur modification agent in asphalt applications.