Synthesis and preparation method of amphoteric betaine Gemini surfactant type hydrophobic monomer

The invention discloses a synthesis method of an amphoteric betaine Gemini surfactant type hydrophobic monomer and a preparation method of the amphoteric betaine Gemini surfactant type hydrophobic monomer. According to the technical scheme, the preparation method comprises the following steps: (1) carrying out ring-opening substitution reaction on maleic anhydride and 3, 3 '-imino bis (N, N-dimethyl propylamine) to obtain an intermediate OEA; and (2) carrying out quaternization reaction on alkyl halide and the intermediate OEA, so as to obtain the amphoteric betaine Gemini surfactant type hydrophobic monomer. The preparation method is wide in raw material source, high in economic applicability, mild in reaction condition and convenient to operate, the yield of the obtained monomer is high, and the monomer introduces excellent performance of a surfactant into a polymer monomer, so that the monomer not only has hydrophobicity, but also has high surface activity which is not possessed by a common hydrophobic mon