Lubricity modifier for fuels and application thereof
AssigneesChina Petroleum & Chemical Corporation, Research Institute of Petroleum Processing, Sinopec
InventorsJianmin Lin, Xin Xia, Baoshi Li, Yan Li
Life of this patent
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Abstract
A lubricity modifier for fuels contain a dicarboxylic acid monoester compound represented by formula (I). In formula (I), R1 represents a single bond, a substituted or unsubstituted C2-6 divalent alkenyl group, or a group having a structure of —R3—R4—R5—; R2 represents a substituted or unsubstituted C1-40 hydrocarbyl group; R3 and R5 each independently represents a single bond, or a substituted or unsubstituted C1-3 divalent alkyl group; and R4 represents a substituted or unsubstituted C3-12 divalent alicyclic group.
Claims14
A fuel composition, comprising a fuel component and a lubricity modifier comprising a dicarboxylic acid monoester compound of formula (I):
- wherein R1 represents a unsubstituted C2-6 divalent alkenyl group or a group of formula —R3—R4—R5—;
- R2 represents a substituted or unsubstituted C1-40 hydrocarbyl group;
- R3 and R5 each independently represents a single bond, or a substituted or unsubstituted C1-3 divalent alkyl group;
- and
- R4 represents a substituted or unsubstituted C3-12 divalent alicyclic group,
- wherein the term “substituted” means substituted with at least one C1-4 linear or branched hydrocarbyl group, and
- wherein the dicarboxylic acid monoester compound is selected from the group of maleic acid monoester, citraconic acid monoester, glutaconic acid monoester, 1,2-cyclopentanedicarboxylic acid monoester, 1,2-cyclohexanedicarboxylic acid monoester, tetrahydrophthalic acid monoester, and combinations thereof.
A method for improving the lubricity of a fuel, comprising the step of adding a lubricity modifier to the fuel, wherein the lubricity modifier comprises a dicarboxylic acid monoester compound of formula (I):
- wherein R1 represents a unsubstituted C2-6 divalent alkenyl group or a group of formula —R3—R4—R5—;
- R2 represents a substituted or unsubstituted C1-40 aliphatic hydrocarbyl group;
- R3 and R5 each independently represents a single bond, or a substituted or unsubstituted C1-3 divalent alkyl group;
- R4 represents a substituted or unsubstituted C3-12 divalent alicyclic group,
- wherein the term “substituted” means substituted with at least one C1-4 linear or branched hydrocarbyl group, and wherein the dicarboxylic acid monoester compound is selected from the group of maleic acid monoester, citraconic acid monoester, glutaconic acid monoester, 1,2-cyclopentanedicarboxylic acid monoester, 1,2-cyclohexanedicarboxylic acid monoester, tetrahydrophthalic acid monoester, and combinations thereof.
A dicarboxylic acid monoester compound of formula (I)
- wherein R1 represents a unsubstituted C2-6 divalent alkenyl group or a group of formula —R3—R4—R5—;
- R2 represents a substituted or unsubstituted C5-14 linear or branched alkyl group;
- R3 and R5 each independently represents a single bond, or a substituted or unsubstituted C1-3 divalent alkyl group;
- and
- R4 represents a substituted or unsubstituted C3-6 divalent alicyclic group,
- wherein the term “substituted” means substituted with at least one C1-4 linear or branched hydrocarbyl group.
Dependencies are inferred from the claim text.