Production of hexabromocyclododecane of enhanced gamma...

Details Production of hexabromocyclododecane of enhanced gamma... Production of hexabromocyclododecane of enhanced gamma...

C - Chemistry, Metallurgy

07

C

C07C 17/02 (2006.01) C07C 23/02 (2006.01)

Patent

CA 2463788

Hexabromocyclododecane with enhanced gamma isomer content is produced by brominating cyclododecatriene in a liquid medium comprised of (1) at least 50 wt% of at least one liquid inert organic solvent other than 1,4-dioxane having a solubility in water of at least 1 wt% at 25~C, and (2) water in an amount of up to 40 wt%, in the presence of (3) 0.5 to 30 wt% of bromide ion (Br-), each wt% being based on the total weight of the liquid portion of the liquid medium.

L'invention concerne un hexabromocyclododécane avec un contenu en isomères gamma amélioré, obtenu par bromuration de cyclododécatriène dans un milieu liquide comprenant (1) au moins 50 % en poids d'un solvant organique liquide inerte autre que le 1,4-dioxane, présentant une solubilité dans l'eau d'au moins 1 % en poids à 25 ·C, et (2) une quantité d'eau allant jusqu'à 40 % en poids, en présence de (3) 0,5 à 30 % en poids d'ions de bromure (Br?-¿), chaque pourcentage en poids étant basé sur le poids total de la partie liquide du milieu liquide.

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