Organic compounds -- part of the class 532-570 series – Organic compounds – Oxygen containing
Patent
1989-03-07
1990-11-06
Reamer, James H.
Organic compounds -- part of the class 532-570 series
Organic compounds
Oxygen containing
568332, C07C 4546
Patent
active
049688456
ABSTRACT:
A process for the preparation of halogen-containing aromatic compounds of the formula ##STR1## wherein Hal represents fluorine, chlorine or bromine and Z represents an aromatic group which comprises reacting a halobenzene of the formula C.sub.6 H.sub.5 Hal (II) under anhydrous conditions with a halide of a bisacid having the formula Hal-CO-Z-CO-Hal (III) in a molar ratio of at least 2:1 in the presence of a haloalkane sulfonic acid of the formula Y(C.sub.n X.sub.2n)SO.sub.3 H (IV), in formulae II and III Hal and Z having the afore-mentioned meaning and Y representing fluorine or hydrogen, X at least one of fluorine and chlorine, but at least one X being fluorine, and n being an integer of from 1 to 10.
The said bis-(4-halobenzoyl) compounds being useful monomers for chemically resistant plastics which are still resistant even at high temperatures.
REFERENCES:
patent: 3907837 (1975-09-01), Effenberger et al.
patent: 4487934 (1984-12-01), Shutske et al.
patent: 4827041 (1989-05-01), Ford et al.
P. M. Hergenrother et al., J. Polymer Sci.; Polymer Chemistry, 25:1093, 1094 (1987).
Hackenbruch Joachim
Papenfuhs Theodor
Siegemund Gunter
Warning Klaus
Hoechst Aktiengesellschaft
Reamer James H.
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