Synthesis of dielectric liquids by improved Friedel-Crafts conde

Details Synthesis of dielectric liquids by improved Friedel-Crafts conde Synthesis of dielectric liquids by improved Friedel-Crafts conde

1990-10-15

1993-02-16

Skane, Christine

Compositions

Fluent dielectric

Halogenated polycyclic compound-containing

252570, 585 25, 585426, 585428, 585429, 570199, C07C 126, C07C 202, H01B 322, H01B 324

Patent

active

051868644

ABSTRACT:
Dielectric liquids are prepared by (a) Friedel-Crafts condensing at least one aromatic halide with at least one aromatic compound in the presence of a catalytically effective amount of ferric chloride, and thereafter deliberately avoiding any downstream destruction
eutralization and/or washing of such ferric chloride catalyst, (b) optionally, removing unreacted reactants from the medium of reaction, and (c) recovering from such medium of reaction a purified dielectric liquid; the subject process is thus environmentally improved by avoiding the generation of aqueous solutions containing contaminating amounts of objectionable organic compounds.

REFERENCES:
patent: 2012302 (1935-08-01), Clark et al.
patent: 3006972 (1961-10-01), Fields et al.
patent: 4438027 (1984-03-01), Mathais et al.
patent: 4523044 (1985-06-01), Commandeur et al.
patent: 4929784 (1990-05-01), Klinkmann et al.

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