Salts and the preparation method and application of the amphiphilic block quaternary ammonium

The present invention discloses an amphiphilic block quaternary ammonium salts and preparation method and application. The salts of the general structural formula as shown in formula I. The present invention is atom transfer radical polymerization, the acid group-containing molecules into the polymeric tertiary amine groups, contain both an acidic group-containing basic group may be bonded to each other to form a quaternary ammonium salt within the same molecule . Such salts have the high efficiency, low toxicity, good biodegradability and soluble characteristics, but also having heat resistance, shear resistance, high salinity, water-soluble good properties, even at high temperature and high salinity having a viscosity reducing effect was very good, with good emulsifying ability and solubilizing oil, it can be widely used in petrochemical industry, particularly as oilfield flooding EOR oil. Type I.