PROCEDURE FOR THE PREPARATION OF A SURFACE COMPOSITION COMPRISING A SECONDARY ALKYL-SULPHATE.

摘要

THE INVENTION REFERS TO A PROCESS TO PREPARE A SURFACTANT COMPOSITION UNDERSTANDING A SECONDARY ALKYL SULPHATE (C8 TO C22), WHOSE PROCESS INCLUDES: A) SULFATING AN OLEFINE (C8 TO C22) AND / OR A SECONDARY ALCOHOL (C8) OPTIONALLY A PRIMARY ALCOHOL, WITH A SULFATION AGENT; B) NEUTRALIZE THE SULFATION PRODUCT INCLUDING ALKYL SULFURIC ACID AND DIALKYL SULPHATE, PRODUCED IN PHASE A) WITH A BASE IN AQUEOUS SOLUTION; C) HEATING THE BASE PRODUCT B) TO SAPONIFY THE DIALKYL SULPHATE AND SUBSTANTIALLY EXTRACT ALL THE WATER FROM THE MIXTURE, FOLLOWED D) COOLING THE PRODUCT IN PHASE C) IN THE PRESENCE OF A DILUENT ORGANIC LIQUID, ANIONIC TO THE ROOM TEMPERATURE THROUGH WHICH A CRYSTALLIZED SOLID COMPOSITION IS SEPARATED, AND E) RECOVER AND DRY THE CRYSTALLIZED SOLID COMPOSITION OF PHASE D), OR BY F) CONTACTING AND MIXING THE PRODUCT OF PHASE C) WITH A GLYCOL, IN THE PRESENCE OF AN ORGANIC THINNER LIQUID ANIONIC; G) SEPARATION OF PHASES, THE LOWER PHASE OF THE MIXTURE FORMED IN PHASE F), WHICH CONTAINS GLYCOL AND COMPOSITION; AND THE SURFACTANT COMPOSITION SO PREPARED.