C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
C07C 45/68 (2006.01) C07C 2/70 (2006.01) C07C 2/86 (2006.01) C07C 15/00 (2006.01) C07C 45/46 (2006.01) C07C 49/76 (2006.01)
Patent
CA 2052812
A continuous process is disclosed for the acylation or alkylation of aromatic compounds in hydrogen fluoride. The aromatic compound is sufficiently insoluble in hydrogen fluoride that a two phase reaction medium forms. However, surprisingly, the product acylated or alkylated aromatic compound is soluble in hydrogen fluoride. The present invention particularly relates to use of a continuous, multi-stage process for carrying out the acylation or alkylation reaction. In the multi-stage process, the continuous phase can be either the hydrogen-fluoride rich phase or the aromatic compound-rich phase. The movement of the continuous phase relative to the non-continuous (dispersed) phase can be countercurrent or concurrent. The multi-stage process can be operated in a manner such that the aromatic compound feed to the reaction is entirely consumed or such that unreacted aromatic compound is recycled.
Curtis Thomas A.
de La Garza Edward M.
Hilton Charles B.
Kenesson Thomas M.
Lindley Daniel D.
Basf Corporation
Hoechst Celanese Corporation
Robic
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