Additive composition for use in a fuel or lubricant formulation, comprising an active substance in an inclusion complex with a modified cyclodextrin of formula (I): wherein n is an integer from 6 to 20, and R1, R2 and R3 are each independently selected from hydrogen, optionally substituted alkyl, o
Additive composition for use in a fuel or lubricant formulation, comprising an active substance in an inclusion complex with a modified cyclodextrin of formula (I): wherein n is an integer from 6 to 20, and R1, R2 and R3 are each independently selected from hydrogen, optionally substituted alkyl, optionally substituted aryl and carbonyl, provided that R1, R2 and R3 are not all hydrogen. Also provided is a fuel or lubricant formulation comprising the additive composition, a premix for use in preparing the additive composition, and the use of a modified cyclodextrin (I) as a vehicle for an active substance in an additive composition or in a fuel or lubricant formulation.
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1. A gasoline formulation comprising the additive composition comprising a cyclodextrin inclusion complex containing: (i) an active substance; and(ii) a modified cyclodextrin of formula (I): wherein n is an integer from 6 to 20, and R1, R2 and R3 are each independently selected from hydrogen, option
1. A gasoline formulation comprising the additive composition comprising a cyclodextrin inclusion complex containing: (i) an active substance; and(ii) a modified cyclodextrin of formula (I): wherein n is an integer from 6 to 20, and R1, R2 and R3 are each independently selected from hydrogen, optionally substituted alkyl, optionally substituted aryl and carbonyl, provided that R1, R2 and R3 are not all hydrogen,the active substance being present as a guest molecule within a host molecule of the modified cyclodextrin (I), in the form of an inclusion complex. 2. The formulation of claim 1, wherein the formulation is a gasoline fuel formulation. 3. A method comprising: introducing an additive composition in a gasoline formulation into a gasoline formulation consuming system, wherein the additive composition comprises a cyclodextrin inclusion complex containing: (i) an active substance; and(ii) a modified cyclodextrin of formula (I): wherein n is an integer from 6 to 20, and R1, R2 and R3 are each independently selected from hydrogen, optionally substituted alkyl, optionally substituted aryl and carbonyl, provided that R1, R2 and R3 are not all hydrogen,the active substance being present as a guest molecule within a host molecule of the modified cyclodextrin (I), in the form of an inclusion complex;and subsequently subjecting the composition to a condition which induces at least partial release of the active substance from the inclusion complex. 4. An additive composition for use in a gasoline formulation comprising a cyclodextrin inclusion complex containing: (i) an active substance;(ii) a modified cyclodextrin of formula (I): wherein n is an integer from 6 to 20, and R1, R2 and R3 are each independently selected from hydrogen, optionally substituted alkyl, optionally substituted aryl and carbonyl, provided that R1, R2 and R3 are not all hydrogen,the active substance being present as a guest molecule within a host molecule of the modified cyclodextrin (I), in the form of an inclusion complex; and (iii) one or more carriers which are suitable for use in a fuel or lubricant formulation. 5. The fuel or lubricant formulation of claim 1, wherein in the modified cyclodextrin of formula (I), the groups R1, R2 and R3 are independently selected from hydrogen and unsubstituted C1 to C12 alkyl groups. 6. The fuel or lubricant formulation of claim 5, wherein at least two of R1, R2 and R3 are independently selected from unsubstituted C1 to C12 alkyl groups. 7. The fuel or lubricant formulation of claim 6, wherein two of the groups R1, R2 and R3 are independently selected from unsubstituted C2 to C8 alkyl groups. 8. The fuel or lubricant formulation of claim 1, wherein in the modified cyclodextrin of formula (I), the integer n is from 6 to 8. 9. The fuel or lubricant formulation of claim 8, wherein in the modified cyclodextrin of formula (I), the integer n is 7. 10. The fuel or lubricant formulation of claim 1, wherein the active substance is an antioxidant. 11. The gasoline formulation of claim 1, wherein the active substance and the modified cyclodextrin (I) are such that the active substance is released from the cyclodextrin inclusion complex when the additive composition is subjected to a temperature above or below a predetermined value, and/or to a pressure above or below a predetermined value, and/or is exposed to another species.
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이 특허에 인용된 특허 (9)
Consaga John P., Complexed liquid fuel compositions.
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Sung Rodney L. (Fishkill NY) Derosa Thomas F. (Passaic NJ) Kaufman Benjamin J. (Hopewell Jct. NY), Composition of matter for full and partial calix[8]arene encapsulation of S-triazines for thermal stability enhancement.
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