Because the softening point of resin is high, its cohesion strength is also higher. Therefore, many friends are interested in the professional knowledge of resin softening point. Today, we hope to be helpful to you from a professional point of view.


Under a given heat load, the temperature and softening point of the resin during deformation give the viscosity index of the resin, which is controlled by the average molecular weight of the oligomer. The softening point of resins is generally determined by the relative molecular weight of resins and the structure of resins. The higher the relative molecular weight, the higher the proportion of ring structure and the higher the softening point of petroleum resin. The softening point of the resin is about 40-50 C higher than that of glass transition temperature Tg, the Tg point of C_5 petroleum resin is about 20 C higher than that of NR, and the Tg point of NR is about - 70 C.


In addition, the company also proposed that the significance of softening point for customers is that it reflects the properties of polymer solution and helps customers to get the most appropriate product formulation at the required temperature. That is to say, at the required service temperature, the most appropriate initial viscosity of the product.