| abstract |
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. |