润滑科技信息平台

Gasoline fuel additives having detergent action or valve seat wear-inhibiting action

专利摘要

A fuel composition comprising a major amount of a gasoline fuel having a maximum sulfur content of 150 ppm by weight and a minor amount of at least one gasoline fuel additive having detergent action or having a valve seat wear-inhibiting action, wherein this gasoline fuel additive has at least one hydrophobic hydrocarbon radical having a number-average molecular weight (MN) of from 85 to 20 000 and at least one polar moiety, and wherein the fuel composition also has a content of at least one lower alkanol of from about 5 to 75% by volume. ......

基本信息

专利类型:
发明专利
申请/专利号:
CA2810284
申请日期:
2004-04-08
专利申请人:
BASF AKTIENGESELLSCHAFT
分类号:
C10L1/14; C10L10/04; C10L10/06; C10L1/18; C10L1/22; C10L10/00
发明/设计人:
SCHWAHN, HARALD ， POSSELT, DIETMAR ， FEHR, ERICH K.
权利要求: CLAIMS: 1. A fuel composition, comprising a gasoline fuel having a maximum sulfur content of 15. ppm by weight, 5 to 5000 ppm by weight of at least one gasoline fuel additive having detergent action or having a valve seat wear-inhibiting action, the gasoline fuel additive having at least one hydrophobic hydrocarbon radical having a number-average molecular weight (MN) of from 85 to 20,000 and at lest one polar moiety, and wherein the fuel composition also has a content of at least one C1-C6-mono alkanol in a proportion of 10-75 Vol.% with the proviso that methanol, ethanol, n- or i-propanol, or mixtures thereof are excluded. 2. The fuel composition according to claim 1 wherein the polar moiety is: (a) a mono- or polyamino group having up to 6 nitrogen atoms, of which at least one nitrogen atom has basic properties, (b) a nitro group, or a nitro group in combination with a hydroxyl group, (c) a hydroxyl group in combination with a mono-or polyamino group, in which at least one nitrogen atom has basic properties, (d) a carboxyl group or an alkali metal or alkaline earth metal salt thereof, (e) a sulfonic acid group or an alkali metal or alkaline earth metal salt thereof, (f) a polyoxy-C2 to C4 alkylene group which is terminated by a hydroxyl group, a mono- or polyamino group, in which at least one nitrogen atom has basic properties, or by a carbamate group, (g) a carboxylic ester group, (h) a moiety derived from succinic anhydride and having a hydroxyl, an amino, an amido or an imido group, or (i) a moiety obtained by Mannich reaction of a substituted phenol with an aldehyde and a mono- or polyamine. 3. The fuel composition according to claim 2, comprising as a gasoline fuel additive having polar moiety (a), a polyalkelenemono- or polyalkylenepolyamine based on polypropylene, polybutene or polyisobutene having Mn = from 300 to 5,000. 4. The fuel composition according to claim 2, comprising as a gasoline fuel additive having polar moiety (b), a reaction product of polyisobutenes having an average degree of polymerization P = from 5 to 100 with a nitrogen oxide or mixtures of nitrogen oxides and oxygen. 5. The fuel composition according to claim 2, comprising as a gasoline fuel additive having polar moiety (c), a reaction product of polyiobutene epoxides obtained from polyisobutene having more than 50% terminal double bonds and Mn = from 300 to 5,000 with ammonia, mono- or polyamines. 6. The fuel composition according to claim 2, comprising as a gasoline fuel additive having polar moiety (d), a copolymer of a C2-C40-olefin with a maleic anhydride which has a total molar mass of from 500 to 20,000 and of whose carboxyl groups at least one has been converted to the alkali metal or alkaline earth metal salt and any remainder of the carboxyl groups have been reacted with an alcohol or an amine. 7. The fuel composition according to claim 2, comprising as a gasoline fuel additive having polar moiety (e), alkali metal or alkaline earth metal salt of an alkyl sulfosuccinate. 8. The fuel composition according to claim 2 comprising as a gasoline fuel additive having polar moiety (f), polyether or polyetheramine obtained by reacting a C2- C30-alkanol, C6-C60-alkanediol, a mono- or di- C2-C30-alkylamine, a C1-C30-alkylcyclo- hexanol or a C1-C30- alkylphenol with from 1 to 30 mol of ethylene oxide or propylene oxide or butylene oxide per hydroxyl group or amino group and, in the case of a polyetheramine, by subsequent reductive amination with ammonia, a monoamine or a polyamine. 9. The fuel composition according to claim 2, comprising as a gasoline fuel additive having polar moiety (g), an ester of a mono-, di- or tricarboxylic acid with a long-chain alkanol or a polyol. 10. The fuel composition according to claim 2, comprising as a gasoline fuel additive having polar moiety (h), a derivative of polyisobutenylsuccinic anhydride obtained by reacting conventional or highly reactive polyisobutylene having Mn = from 300 to 5,000 with maleic anhydride by a thermal route or via a chlorinated polyisobutene. 11. The fuel composition according to claim 2, comprising as a gasoline fuel additive having polar moiety (i), a reaction product of a polyisobutene-substituted phenol with formaldehyde and a mono- or polyamine. 12. The fuel composition according to any one of claims 1 to 11, comprising a gasoline fuel having a maximum olefin content of 21% by volume based on the volume of a nonadditized lower alkanol-free gasoline fuel. 13. The fuel composition according to any one of claims 1 to 12, comprising a gasoline fuel having a maximum benzene content of 1.0% by volume based on the volume of nonadditized lower alkanol-free gasoline fuel. 14. The fuel composition according to any one of claims 1 to 13, comprising a gasoline fuel having a maximum oxygen content of 2.7% by volume based on the volume of nonadditized lower alkanol-free gasoline fuel. 15. The fuel composition according to any one of claims 1 to 14, comprising a gasoline fuel having a maximum aromatics content of 42% by volume based on the volume of a nonadditized lower alkanol-free gasoline fuel. 16. The fuel composition according to any one of claims 1 to 15, comprising the gasoline fuel additives having the polar moieties (a) to (i) in an amount of from 1 to 5,000 ppm by weight. 17. The use of at least one C1-C6-mono alkanol in a proportion of 10-75 Vol.%, with the proviso that methanol, ethanol, n- or i-propanol, or mixtures thereof are excluded, in low- sulfur gasoline fuels having a maximum sulphur content of 150 ppm by weight to improve the action of an additive having detergent effect or having valve seat wear- inhibiting effect, wherein the additive has at least one hydrophobic hydrocarbon radical having a number- average molecular weight (MN) of from 85 to 20,000 and at least one polar moiety. 18. A process for improving the additive action of an additive as defined in claim 1 having detergent effect or having valve seat wear-inhibiting effect in low-sulfur gasoline fuels, by admixing the gasoline fuel with 10 ¨ 75% by volume of a lower alcohol. 19. The use of a combination of at least one C1-C6-mono alkanol in a proportion of 10-75 Vol.%, with the proviso that methanol, ethanol, n- or i-propanol, or mixtures thereof are excluded, and at least one additive having detergent effect or having valve seat wear- inhibiting effect, the additive having at least one hydrophobic hydrocarbon radical having a number-average molecular weight (MN) of from 85 to 20,000 and at least one polar moiety, to reduce combustion chamber deposits or to reduce deposits in the intake system of a gasoline engine. 20. The use of a combination of at least one C1-C6-mono alkanol in a proportion of 10-75 Vol.%, with the proviso that methanol, ethanol, n- or i-propanol, or mixtures thereof are excluded, and additive having valve seat wear-inhibiting effect, the additive having at least one hydrophobic hydrocarbon radical having a number-average molecular weight (MN) of from 85 to 20,000 and at least one polar moiety, as a valve seat wear- inhibitor for a gasoline fuel.