Composition of diphenylmethanemethyl and benzyl derivatives,...

Details Composition of diphenylmethanemethyl and benzyl derivatives,... Composition of diphenylmethanemethyl and benzyl derivatives,...

C - Chemistry, Metallurgy

07

C

31/102, 260/681

C07C 15/16 (2006.01) C07C 2/86 (2006.01) H01B 3/22 (2006.01)

Patent

CA 2036794

This invention concerns a benzyl toluene, (methylbenzyl)toluene, benzylxylene, (methylbenzyl)xylene compound that can possibly contain their benzyl or methylbenzyl derivatives. This compound is prepared by chlorinating a mixture of xylene and toluene to which a FRIEDEL and CRAFTS catalyst is subsequently added. Distillation of the excess toluene and xylene leaves a dielectric liquid that has the advantage of maintaining its liquid state to very low temperatures.

La présente invention concerne une composition à base de benzyltoluène, (méthylbenzyl)toluène, benzylxylène, (méthylbenzyl)xylène pouvant éventuellement contenir leurs dérivés benzylés ou méthylbenzylés. Cette composition est préparée par chloration d'un mélange de xylène et de toluène dans lequel on ajoute ensuite un catalyseur de FRIEDEL et CRAFTS. Après distillation du toluène et du xylène en excès, on obtient un liquide à usage diélectrique qui présente l'avantage de rester liquide jusqu'à de très basses températures.

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