USE OF TETRAHYDROBENZOXAZINES AS STABILISERS Russian patent published in 2011 - IPC C10L1/22 C07D265/16 C07D498/04 

FIELD: chemistry.

SUBSTANCE: invention relates to use of tetrahydrobenzoxazines

in which substitute R¹ denotes a hydrocarbyl residue having 1-3000 carbon atoms, and substitutes R², R³, R⁴ and R⁵ independently denote hydrogen atoms, hydroxyl groups or hydrocarbyl residues, having 1-3000 carbon atoms, respectively, and in which substitutes R³ and R⁴ or R⁴ and R⁵ with a partial structure -O-CH₂-NR⁷-CH₂-, bonded to the benzene ring, can also form a second tetrahydrooxazine ring, where R⁷ denotes hydrocarbyl residues having 1-3000 carbon atoms, provided that at least one of substitutes R¹, R², R3, R⁴, R⁵ or R⁷ are polyisobutenyl, having 3000 carbon atoms and the rest of the substitutes from the group R¹, R², R³, R⁴, R⁵ or R⁷, if they denote hydrocarbyl residues, have 1-20 carbon atoms, respectively, as anti-oxidants for stabilising mineral oil and fuel products against the effect of light, oxygen and heat. The invention also describes jet fuel and jet fuel additive concentrate containing tetrahydrobenzoxazine of formula (I).

EFFECT: preparation of stabilisers having improved stabilisation of nonliving organic material, particularly jet fuel against the effect of light, oxygen and heat.

9 cl, 14 ex