METHOD OF CYCLOHEXYLAMINE REGENERATION FROM SALTS' AQUEOUS SOLUTIONS ON BASE OF 2-SUBSTITUTED BENZOTHIAZOLE FROM 2-SUBSTITUTED BENZOTHIAZOLE

The solution concerns a method of regeneration of cyclohexylamine from water solutions of salts based on 2-substituted benzothiazole during production of N-cyclohexylbenzothiazolyl-2-sulfenamide from raw 2-mercaptobenzothiazole and sodium hypochlorite in surplus of cyclohexylamine. After separation...

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Hauptverfasser:	BAUEROVA GABRIELA ,CS, HOLCIK JAN CSC.,CS, MUCHOVA JANA CSC.,CS, G"URTLER TIBOR,CS, PODMANICKY STANISLAV ,CS, KVASNICKA JOZEF,CS, KATUSIN JOZEF,CS, KACANI STANISLAV CSC.,CS, MARCHALIN MIROSLAV CSC.,CS, KRISTOFCAK JOZEF CSC.,CS, LESKA STEFAN,CS, KRSKA STEFAN,CS, ARGALAS PETER ,CS, CUKAN VLADIMIR ,CS, MASEK JAN ,CS, POOR ALEXANDER,CS
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMISTRY HETEROCYCLIC COMPOUNDS METALLURGY ORGANIC CHEMISTRY
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Zusammenfassung:	The solution concerns a method of regeneration of cyclohexylamine from water solutions of salts based on 2-substituted benzothiazole during production of N-cyclohexylbenzothiazolyl-2-sulfenamide from raw 2-mercaptobenzothiazole and sodium hypochlorite in surplus of cyclohexylamine. After separation of solid fraction and separation of the filtrate phases 1.4 to 5.0 weight parts of sodium hydroxide is added in the form of water solution per 100 weight parts of organic phase before entrance in atmospheric distillation. This results in releasing of cyclohexylamine from ionic bond on benzothiazolyl-2-sulfonic acid. The obtained distillate containing less then 1 percent by weight of benzothiazole is returned to the new synthesis of N-cyclohexylbenzothiazolyl-2-sulfenamide and the product from distillation columns is used as a secondary raw material.The solution can be used in chemical industry.