Abstract: In this paper， The coal based high flow impact copolymerized polypropylene was successfully developed on a domestic polypropylene production unit using Innovene gas-phase process. At the same time， the modification of organic phosphate nucleating agents for the developed polymer materials was studied. The results showed that CH-39， FT-21 and TMP-6 nucleating agents can effectively promote the crystallization process and improve the crystallization rate of the materials， The bending modulus of TMP-6 modified polypropylene is slightly lower than that of polypropylene modified by other three nucleating agents， and the coal based impact copolymerized polypropylene modified by CH-39 and FT-21 is basically the same in tensile properties， bending properties and impact strength， which provides a certain industrial reference value for the development and performance optimization of new coal based polypropylene products.

Key words: coal-based polypropylene, Innovene gas phase process, hydrogen-regulating method, high melt index