RU97115237A

RU97115237A - COMPOSITIONS OF ADDITIVES AND LIQUID FUELS

Info

Publication number: RU97115237A
Application number: RU97115237/04A
Authority: RU
Inventors: Диллворт Брид; Капротти Ринальдо
Original assignee: Эксонк Кемикэл Пейтентс Инк.
Priority date: 1995-02-02
Filing date: 1996-02-02
Publication date: 1999-06-20

Claims

1. The composition of the liquid fuel, including in the form of the main amount of liquid fuel, which contains not more than 0.05 wt.% Sulfur and 95% of the components of which boil away at a temperature not exceeding 350 ^o C, and which also contains a small amount of additive composition, including ( a) an ashless dispersant, which is an acylated nitrogen compound, and (b) monocarboxylic acid or an ester of monocarboxylic acid and alcohol, where the acid contains 2-50 carbon atoms and the alcohol contains one or more carbon atoms.

2. The composition of the liquid fuel, including in the form of the main amount of liquid fuel, which contains not more than 0.05 wt.% Sulfur and 95% of the components of which boil away at a temperature not exceeding 350 ^o C and which also contains a small amount of additive composition, including (a ) an ashless dispersant, which is an acylated nitrogen compound, and (b) a polycarboxylic acid or an ester of a polycarboxylic acid and an alcohol, where the acid contains 2-50 carbon atoms and the alcohol contains one or more carbon atoms, the ratio between weight to the amounts of component (a) and component (b) are from 1: 2 to 2: 1.

3. The composition according to p. 1 or 2, in which the acylated nitrogen compound has a hydrocarbyl substituent with at least 10 aliphatic carbon atoms and it is obtained by reacting a carboxylic acid as an acylating agent with at least one amine compound comprising at least one - NH group, wherein this acylating agent is bonded to the amine compound via an imide, amide, amidine or acyloxyammonium bond.

4. The composition of claim 3, wherein the acylated nitrogen compound contains hydrocarbyl-substituted succinimide or hydrocarbylsuccinimide obtained by reacting succinic anhydride substituted with polyisobutylene as an acylating agent, wherein the polyisobutylene substituent contains 30-400 carbon atoms, with a mixture of ethylene polyamines containing 3-7 amine nitrogen atoms for each ethylene polyamine and 1-6 ethylene groups.

5. The composition of claim 1, wherein component (b) is an ester derived from an acid of the general formula
R ¹ (COOH),
where R ¹ denotes an alkyl or alkenyl group containing 10-30 carbon atoms.

6. The composition according to any one of paragraphs. 1-5, in which component (b) is an ester derived from an alcohol of the general formula
R ² (OH) _y ,
where y is an integer equal to 1 or more;
R ² denotes a hydrocarbyl group containing 1-10 carbon atoms,
moreover, -OH groups, if more than one such group is present, are optionally substituents at different carbon atoms.

7. The composition according to p. 1 or according to any one of paragraphs. 3-6, when they are dependent on p. 1, in which the ratio between the weight amounts of components (a) and (b) exceeds 1: 4.

8. The composition according to any one of paragraphs. 1-7, in which the cetane number of the liquid fuel is at least 50.

9. The composition according to any one of paragraphs. 1-8, in which the liquid fuel is a diesel liquid fuel.

10. An additive composition comprising (a) an ashless dispersant containing an acylated nitrogen compound, and (b) monocarboxylic acid containing 2-50 carbon atoms.

11. The additive composition comprising (a) an ashless dispersant, which is an acylated nitrogen compound, and (b) a polycarboxylic acid or an ester of mono- or polycarboxylic acid and glycerol, where the acid contains 2-50 carbon atoms, and the ratio between the weight amounts of the components ( a) and (b) is from 1: 2 to 2: 1.

12. The composition according to PP. 1,2 or 11, in which component (b) is a glycerol monoester or a glycerol diester.

13. The use of an additive composition comprising (a) an ashless dispersant, which is an acylated nitrogen compound, and (b) a mono- or polycarboxylic acid or a carboxylic acid and alcohol ester, where the acid contains 2-50 carbon atoms and the alcohol contains one or more carbon atoms, in liquid fuel, which contains no more than 0.05 wt.% sulfur and 95% of the components of which boil away at a temperature not exceeding 350 ^o C, to increase its lubricity in the high-pressure fuel injection system or in the high-pressure injection unit I am.

14. The use of an additive composition comprising (a) an ashless dispersant, which is an acylated nitrogen compound, and (b) mono- or polycarboxylic acid or a carboxylic acid and alcohol ester, where the acid contains 2-50 carbon atoms and the alcohol contains one or more carbon atoms, in diesel liquid fuel, which contains not more than 0.05 wt.% sulfur and 95% of the components of which boil away at a temperature not exceeding 350 ^o C, to increase its lubricity.