Naphthenic acid amide polyether ester sulfonate surfactant with ultralow interfacial tension and preparation method of naphthenic acid amide polyether ester sulfonate surfactant

• Main Authors: WANG LINXING, DONG KUO, HOU YINLONG, MA RUI, WANG JUN, WANG LING, SUN YUBO, TIAN LEI, DONG CUITING, ZHU XIANJIANG, LI SHANSHAN, YAN HAOYUAN
• Format: Patent
• Language: Chinese; English
• Published: 28.03.2023
• Subjects: ADHESIVES; CHEMISTRY; COMPOSITIONS BASED THEREON; DYES; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; ORGANIC MACROMOLECULAR COMPOUNDS; PAINTS; POLISHES; THEIR PREPARATION OR CHEMICAL WORKING-UP

According to the naphthenic acid amide polyether ester sulfonate ultralow interfacial tension surfactant and the preparation method, naphthenic acid and ethanediamine are used as raw materials, and naphthenic acid amide is generated through dehydration of a water-carrying agent at a certain temperature; carrying out ring opening polymerization on the naphthenic acid amide and ethylene carbonate under the action of a catalyst to generate naphthenic acid amide polyether ester; and sulfonating the naphthenic acid amide polyether ester through 3-chloro-2-hydroxy propane sodium sulfonate to obtain the naphthenic acid amide polyether ester sulfonate surfactant with ultralow interfacial tension. The synthesis method has the characteristics of abundant raw material resources, simple and controllable synthesis process, excellent product performance, wide adaptability and the like. A binary oil displacement system composed of the surfactant and polyacrylamide can keep ultralow interfacial tension in a wide concentratio