Use of amino azoic dyes as markers of oil distillation products

Details Use of amino azoic dyes as markers of oil distillation products Use of amino azoic dyes as markers of oil distillation products

C - Chemistry, Metallurgy

10

L

C10L 1/00 (2006.01) C09B 29/08 (2006.01)

Patent

CA 2335628

Amino azoic dyes having general formula (I) wherein: R1 is linear or branched alkyl having from 4 to 20 carbon atoms; R2 and R3 are independently H, CH3, C2H5, OCH3, OC2H5; R4 and R5 are independently H, CH3, C2H5; X IS H, OH; Y is hydrogen or poly-isopropoxy chain (IA) wherein n is comprised between 1 and 4; they are used as markers of oil distillation product.

L'invention concerne des colorants amino azoïques de la formule générale (I) dans laquelle: R?1¿ représente un alkyle linéaire ou ramifié possédant 4 à 20 atomes de carbone ; R?2¿ et R?3¿ représentent indépendamment H, CH¿3?, C¿2?H¿5?, OCH¿3?, OC¿2?H¿5?; R?4¿ et R?5¿ représentent indépendamment H, CH¿3?, C¿2?H¿5?; X représente H, OH ; Y représente un hydrogène ou la chaîne poly-isopropoxy (IA) dans laquelle n représente un nombre compris entre 1 et 4. Ces colorants sont utilisés comme marqueurs de produits de distillation de pétrole.

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