Recently, the new type of waterproof asphalt jointly developed by Dalian Institute, Changling Refining and Marketing Company was successfully trial-produced in Changling Refining and Marketing Company. This product has excellent low-temperature performance, high flash point, low density and low evaporation loss, and is superior to similar domestic products. It fills the blank of Sinopec's high-grade waterproof asphalt products and will be applied by leading enterprises in the waterproof industry to further expand the application scenarios of Sinopec's asphalt.

The new waterproof asphalt is a high-grade waterproof asphalt, which is used as a blending component in the production process of modified bitumen waterproof membrane. In the past, high-grade waterproof asphalt had problems such as insufficient high and low temperature performance, large evaporation loss, etc., which led to an increase in the amount of modifiers used and increased the production cost of the coil.

Aiming at low-value oil resources, Dalian Research Institute has jointly tackled key problems with Changling Refining and Marketing Company through raw material optimization, fraction cutting, and blending, and successfully developed and trial-produced a new type of waterproof bitumen that meets user requirements, effectively helping waterproof membranes Production enterprises solve the problems of high pollution and high cost, simplify the production process of waterproof membranes, and ensure the quality of membrane products, which has a good application prospect.