and the multi-stage reactor preparation method is its main preparation method.

high impact polypropylene (hipp) refers to a modified polypropylene material made by adding modifiers such as polymer elastomers to polypropylene resin (pp) using chemical or physical modification methods. high-impact polypropylene has the advantages of good impact resistance, good toughness, low temperature resistance, and high modulus. it is widely used in household appliances, automobile manufacturing, pipes and other fields. the main preparation methods of high-impact polypropylene include…