Method for producing chlorinated polypropylene with mixed solvent

The invention discloses a method for producing chlorinated polypropylene with a mixed solvent. The method comprises the following steps of: dissolving polypropylene in a mixed solvent of ethyl acetate and methenyl chloride or butyl acetate and methenyl chloride; then, adding chlorine to carry out a chlorination reaction; and displacing, drying and granulating the chlorinated solution to obtain a chlorinated polypropylene product. When the chlorinated polypropylene is produced by adopting the mixed solvent of the ethyl acetate and the methenyl chloride or the butyl acetate and the methenyl chloride, the mixed solvent has stronger dissolubility to the polypropylen, lower dissolubility pressure strength, higher production safety, lower requirement for the sealing strength of a reaction kettle and lower equipment investment.