PROCEDURE FOR THE OBTAINING OF ALKALINE HYDROXIDE, CHLORINE AND HYDROGEN, THROUGH ELECTROLYSIS OF AN AQUEOUS ALKALINE CHLORIDE SOLUTION IN A MEMBRANE CELL.

摘要

PROCEDURE FOR OBTAINING THE ACID 1-HYDROXY-3OXAPENTANE-1,2,4,5-TETRACARBOXILICO AND 3,6-DIOXAETANO-1,2,4, 5,7,8-HEXACARBOXILICO, ITS SALTS AND THEIR MIXTURES, IN WHICH WITHOUT INTERMEDIATE INSULATION A) 1 MOL OF MALEIC ACID ANHYDRIDE IS EPOXIDED WITH OR, 2 TO 1.5 MOLES OF HYDROGEN PEROXIDE IN THE PRESENCE OF EPOXIDATION CATALYSTS, B) REACTION MIXTURE IS HYDROLYZED BY WARMING OF ADDITION OF SALTS OF ZINC OR OF ALKALINE TERRAES AS CATALYSTS TO A PH VALUE OF 10 TO 14, TO 60 TO 110 DEGREES C, AND AFTER D) OF THE SOLUTION SO OBTAINED, THE FINAL PRODUCT CITED ABOVE IS ISOLATED. IN THIS PROCEDURE, THE SEPARATE OF MALEIC ACID IS PRECIPATED AND THE FINISHED PRODUCT IS OBTAINED ACCORDING TO A SIMPLIFIED PROCEDURE.