Purification of mercaptobenzothiazole

C - Chemistry – Metallurgy – 07 – D

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260/309.5

C07D 277/72 (2006.01)

Patent

CA 1224790

PRECIS DE LA DIVULGATION: L'invention concerne un procédé de purification du mercaptobenzothiazole brut de synthèse. Ce procédé qui consiste à traiter le produit brut par de l'aniline pour le cristalliser, à filtrer et laver par de l'aniline le mercaptobenzothiazole cristallisé et à recycler le cas échéant les phases organiques liquides du milieu de purifi- cation, est caractérisé en ce que la cristallisation du mercaptobenzothiazole, sa filtration et son lavage sont effectués à une température comprise entre 40 et 120°C.

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