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Two new amino acid-type amphoteric surfactants — disodiumN-(2-fatty acyl amino) ethyliminodiacetate and disodiumN-(2-fatty acyl amino) ethyl-N,N-bis[3-(2-hydroxy) propylsulfonate] amine — were synthesized using tall oil fatty acids as the raw material. Suitable processing conditions for synthesizing the intermediates and final products were probed. In addition, the chemical structures of the intermediates and the final products were identified by infrared spectroscopy, hydrogen nuclear magnetic resonance spectroscopy, and elemental analysis.

Synthesis of new amino acid-type amphoteric surfactants from tall oil fatty acid