Use of tetrahydrobenzoxazines as stabilizers

C - Chemistry – Metallurgy – 07 – D

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C07D 265/16 (2006.01) C07D 498/04 (2006.01) C10L 1/22 (2006.01)

Patent

CA 2616675

The invention relates to the use of tetrahydrobenzoxazines (I), where R1 = a hydrocarbon group and R2, R3, R4 and R5 independently = H, OH or hydrocarbon and R2 to R5 can also form a second and a third tetrahydrooxazine ring with the proviso that at least one of the substituents has 4 to 3,000 carbon atoms and the remaining substituents, when hydrocarbon groups have 1 to 20 carbon atoms, as stabilisers for the stabilisation of inanimate organic materials, in particular turbine fuels against the effects of light, acid and heat.

Utilisation de tétrahydrobenzoxazines de formule (I), dans laquelle R1 désigne un reste hydrocarbyle et R2, R3, R4 et R5 désignent, indépendamment l'un de l'autre, un atome d'hydrogène, des groupes hydroxyle ou des restes hydrocarbyle, et où R2 à R5 peuvent former également un deuxième et un troisième cycle tétrahydro-oxazine, sous réserve qu'au moins l'un des substituants présente de 4 à 3000 atomes de carbone, et que les autres substituants, pour autant qu'ils désignent des restes hydrocarbyle, présentent chacun de 1 à 20 atomes de carbone, comme agents stabilisants servant à la stabilisation d'un matériau organique inanimé, en particulier, de carburants pour turbines, contre l'action de la lumière, de l'oxygène et de la chaleur.

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