Novel polyisobutene amine used as gasoline cleansing agent and synthetic method of novel polyisobutene amine

The invention relates to novel polyisobutene amine used as a gasoline cleansing agent and a synthetic method of novel polyisobutene amine. Polyisobutene amine can be represented as the general formula shown in the specification, in the formula, n is the repeating unit number of a polyisobutene chain segment, and X is an organic group containing amino. Polyisobutene amine is prepared from high-activity polyisobutene and aminobenze through a Friedel-Crafts alkylation reaction by one step, the synthesis process is simple, the production cost is low, the product yield is high, high pressure and a noble metal catalyst used in a traditional production process of polyisobutene amine are avoided, and good application prospect is realized.