Amphoteric ionic Gemini surfactant and synthetic method thereof

technical field The invention provides a zwitterionic Gemini surfactant and a synthesis method thereof, belonging to the technical field of surfactant preparation. Background technique Different from ordinary surfactant structure, zwitterionic Gemini surfactant has two cationic groups and two anionic groups, and its special molecular structure makes it have many special properties: (1) It has a relatively low CMC value, and its performance is more efficient than ordinary surfactants; (2) The zwitterionic Gemini surfactant has an isoelectric point and has the surface activity of two ionic surfactants; (3) Strong compounding performance, can be compounded with almost any other type of surfactant, and most zwitterionic surfactants have good synergistic effect; (4) Very low irritation, less irritating to human skin and eyes, and rarely interacts with fragrance; (5) Good wettability and foamability, good adsorption to the surface of charged substances, without forming a h...