| 摘要 |
THE INVENTION RELATES TO A PROCESS FOR PREPARING CAPLOLACTAM BY BECKMANN REARRANGEMENT OF CCLOHEXANONE OXIME BY FEEDING CYCLOHEXANONE OXIME TO A REACTION MIXTURE COMPRISING (I) SULFURIC ACID (II) SO₃ AND (III) CAPROLACTAM, WHEREIN THE SO₃ CONTENT OF THE REACTION MIXTURE IS BETWEEN 9 AND 20 WT %.AND THE MOLAR RATIO M OF THE REACTION MIXTURE DEFINED AS (ns03 + Nh2s04)/ncap IS BETWEEN 1 AND 1.4, WHEREIN ns03= QUANTITY OF SO₃ IN REACTION MIXTURE, IN MOL NH2S04= QUANTITY OF H₂SO₄IN REACTION MIXTURE, IN MOL Ncap= QUANTITY OF CAPROLACTAM IN REACTION MIXTURE, IN MOL. |
