China Hunan news recently Hunan Provincial Economic Commission and the Office of the petrochemical industry, said Sinopec Baling Petrochemical Company in the modified asphalt thermoplastic rubber (TPR) program passed the provincial appraisal. Experts believe that the overall technology reached the international advanced level, to fill the gap.

     It is understood that the principles of the project based on living anionic polymerization, through molecular design, synthesis of a new type of asphalt modified with polystyrene block copolymers (SIBS), the middle block of isoprene and butadiene feeding methods, block ratio (S / IB), isoprene and butadiene ratio (B / I) and the molecular weight of SIBS physical properties, especially the application of modified asphalt performance, determine the best block than, isoamyl diene and butadiene ratio (B / I), polymer molecular weight and mixed feeding methods of the modified asphalt with SIBS technology indicators, and 300 tons in the pilot plant on the validation and further optimization.

     100,000 tons / year plant Industrial trials show that the process aggregation, condensation, drying control smooth, can be mass-produced. User application shows that the product can effectively improve the ductility of modified asphalt, high temperature storage stability and workability, and the traditional styrene - butadiene - styrene block copolymer (SBS) 796-H, the average low manufacturing costs 1,500 yuan / ton. (Author: Li Xiaolin)