Synergistic mixture
AssigneeBASF SE
InventorsArno Lange, Dietmar Posselt
Life of this patent
Estimating the term…
Abstract
A synergistic mixture comprising from 1 to 99.9% by weight of compounds having structural elements (I) in which the free valencies on the oxygen atom and on the nitrogen atom may be combined to form a five-, six- or seven-membered ring and the benzene ring may also bear substituents at one or more of the free positions, and from 0.1 to 99% by weight of sulfur-containing organic compounds with antioxidant action. This synergistic mixture is suitable as a stabilizer for stabilizing inanimate organic material, especially mineral oil products and fuels, against the action of light, oxygen and heat.
Claims17
A turbine or jet fuel selected from the group consisting of Jet Fuel A, Jet Fuel A-1, Jet Fuel B, Jet Fuel JP-4, JP-5, JP-7, JP-8 and JP-8+100, Jet A and Jet A-1, comprising 12 to 480 mg/L relative to a total weight of the fuel of a mixture of components (A) and (B) comprising
- (A) from 65 to 90% by weight of the mixture of (A) and (B) of at least one compound having at least one polycyclic phenolic compound of the following formula
- (B) from 10 to 35% by weight of the mixture of (A) and (B) of at least one of a hydroxyl-containing diaryl sulfide, a reaction product of polyisobutene with thiophenol, and a reaction product of polyisobutenes with elemental sulfur,
- where the sum of the two components (A) and (B) adds up to 100% by weight.
A method of improving thermal stability of a turbine or jet fuel selected from the group consisting of Jet Fuel A, Jet Fuel A-1, Jet Fuel B, Jet Fuel JP-4, JP-5, JP-7, JP-8 and JP-8+100, Jet A and Jet A-1, the method comprising combining the fuel with a stabilizer comprising 12 to 480 mg/L of a mixture of components (A) and (B) comprising
- (A) from 65 to 90% by weight of the mixture of (A) and (B) of at least one compound having at least one polycyclic phenolic compound of the following formula
- (B) from 10 to 35% by weight of the mixture of (A) and (B) of at least one of a hydroxyl-containing diaryl sulfide, a reaction product of polyisobutene with thiophenol, and a reaction product of polyisobutenes with elemental sulfur,
- where the sum of the two components (A) and (B) adds up to 100% by weight.
A method of reducing deposits in a fuel system or combustion system of a turbine, the method combusting a turbine or jet fuel selected from the group consisting of Jet Fuel A, Jet Fuel A-1, Jet Fuel B, Jet Fuel JP-4, JP-5, JP-7, JP-8 and JP-8+100, Jet A and Jet A-1, the method comprising 12 to 480 mg/L of a mixture of components (A) and (B) comprising
- (A) from 65 to 90% by weight of the mixture of (A) and (B) of at least one compound having at least one polycyclic phenolic compound of the following formula
- (B) from 10 to 35% by weight of the mixture of (A) and (B) of at least one of a hydroxyl-containing diaryl sulfide, a reaction product of polyisobutene with thiophenol, and a reaction product of polyisobutenes with elemental sulfur,
- where the sum of the two components (A) and (B) adds up to 100% by weight.
Dependencies are inferred from the claim text.