Viscoelastic surfactant(VES) fracturing fluid of EA-22 which is the type of cationic surfactant of alkylamido quaternary ammonium salt was prepared.

Study on preparation and antibacterial properties of a organosilicon quaternary ammonium salt;

The application and synthesis method of organosilicon quaternary ammonium salt are summarized in detail and various synthesis methods are evaluated.

Demulsifier TKQ comprises of phenol-amine resin block polyethers and quaternized polyamidoamine.

Preparation of trimethylsilyl quaternary ammonium salt phase transfer catalysts and their application in the synthesis of esterified carbon functional groups organic silicone monomers;