METHOD OF REGENERATING SURFACTANTS BASED ON FLUORINATED ACIDS FROM ADSORBENT PARTICLES SATURATED WITH SAID SURFACTANTS Russian patent published in 2010 - IPC C07C51/493 C07C67/54 C07C27/02 C07C53/21 C07C67/08 C07C69/63 

FIELD: chemistry.

SUBSTANCE: invention relates to an improved method of regenerating surfactants based on fluorinated acids or their salt from adsorbent particles on which the said surfactants are adsorbed, based on fluorinated acids, involving saturation of adsorbing particles with surfactants based on fluorinated acids or their salt, washing particles of adsorbent on which the surfactant based on fluorinated acid or its salt is adsorbed with water; mixing particles of the adsorbent on which the surfactant based on fluorinated acid or its salt is adsorbed with alcohol or inorganic acid in the presence of water, initiation of etherification of the said surfactant based on fluorinated acid or its salt with the said alcohol to obtain an ether derivative of the said fluorinated surfactant, distillation of the said mixture to obtain a distillate containing the said ether derivative, separation of the said ether derivative from the said distillate and optional return of the remaining distillate to the said mixture and optional conversion of the said ether derivative to the corresponding surfactant based on fluorinated acid or its salt.

EFFECT: efficient method enables use of minimal amount of regenerating liquid and leads to obtaining regenerated particles of adsorbent which can be used repeatedly.

8 cl, 18 ex