JPH10279965A - Fuel oil additive and fuel oil composition containing the additive - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fuel oil additive excellent in cleanliness in an intake system and a combustion chamber of a gasoline engine and a fuel oil composition containing the additive. SOLUTION: The fuel oil additive contains a hydroxyamine compound represented by the following formula (1). Embedded image (However, R ¹ is an alkyl group, alkenyl group, or acyl group having 6 to 30 carbon atoms. R ² is a methylene group or an alkylene group having 2 to 3 carbon atoms. A ¹ , A ^2, and A ³ is an alkylene group having 2 to 4 carbon atoms, a ^1, a
At least one of ^2, and A ³ comprises a propylene group. m, n and q are 0 or a positive integer, and m
+ N + q is 1 to 150. p is 0 or 1 to 6
Is a positive integer. ) In addition, mineral oil as a main component, and the above-mentioned fuel oil additive, based on the total weight of the fuel oil composition,
A fuel oil composition containing 0.001 to 5% by weight.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fuel oil additive and a fuel oil composition containing the additive, and more particularly, to a fuel oil additive excellent in cleanliness of an intake system and a combustion chamber of a gasoline engine. And a fuel oil composition containing the additive.

[0002]

2. Description of the Related Art Deposits such as sludge and deposits in an intake system and a combustion chamber of a gasoline engine cause a decrease in engine output, a decrease in drivability, and a decrease in exhaust gas composition. In particular, in recent years, as a result of the remarkable performance of gasoline engines, such deposits have become extremely sensitive to engine performance. For example, an electronically controlled fuel injection device precisely controls the air-fuel ratio and is effective not only for improving engine performance, but also for improving fuel economy and improving exhaust gas composition. However, when deposits are deposited on the intake valve, the gasoline injected from the fuel injection device hits the deposits, making it impossible to properly control the air-fuel ratio, thereby adversely affecting drivability.

Hitherto, for the purpose of improving the cleanliness of intake valves and intake ports of gasoline engines, Japanese Patent Application Laid-Open No. 55-25489 and Japanese Patent Publication No. 55-39278 have been disclosed.
JP, JP-B-56-48556, JP-B-61-
No. 33016 describes a fuel oil containing a polyetheramine compound. Also, Japanese Patent Application Laid-Open No.
JP 61806 describes a fuel oil containing a polyisobutenamine compound. However, fuel oil containing a polyisobuteneamine compound or a polyetheramine compound improves the cleanliness of the intake system of a gasoline engine, but has no effect on the combustion chamber.
In many cases, it was rather detrimental.

[0004]

SUMMARY OF THE INVENTION An object of the present invention is to provide a fuel oil additive containing a specific hydroxyamine compound which is excellent in cleanliness of an intake system and a combustion chamber of a gasoline engine, and a fuel containing the additive. It is to provide an oil composition.

[0005]

Means for Solving the Problems The present inventors have conducted intensive studies focusing on hydroxyamine-based compounds as fuel oil additives. As a result, a fuel oil obtained by adding a specific hydroxyamine-based compound to mineral oil was added. As a result, it has been found that the cleanliness of the intake system and the combustion chamber of a gasoline engine is extremely excellent, and the present invention has been completed.

That is, the present invention provides a fuel oil additive characterized by containing a hydroxyamine compound represented by the following formula (1).

[0007]

Embedded image (In the formula, R ¹ is an alkyl group, an alkenyl group or an acyl group having 6 to 30 carbon atoms. R ² is a methylene group or an alkylene group having 2 to 3 carbon atoms. A ¹ , A ² and A ³ is an alkylene group having 2 to 4 carbon atoms, and A ¹ ,
At least one of A ² and A ³ contains a propylene group. m, n and q are 0 or a positive integer,
m + n + q is 1 to 150. p is 0 or 1
6 is a positive integer. ) In addition, mineral oil as a main component, and the above-mentioned fuel oil additive, based on the total weight of the fuel oil composition,
A fuel oil composition characterized by containing 0.001 to 5% by weight.

The present invention relates to a fuel oil additive as described above and a fuel oil composition containing the fuel oil composition. Preferred embodiments thereof include the following. (1) The fuel oil additive according to the formula (1), which represents the hydroxyamine-based compound, wherein R ¹ is an alkyl group, an alkenyl group, and an acyl group having 10 to 25 carbon atoms. (2) The fuel oil additive according to the above formula (1), wherein A ¹ , A ² and A ^{3 in the} formula (1) representing the hydroxyamine-based compound are propylene groups. (3) The fuel oil additive according to the formula (1), wherein m + n + q is 3 to 30, or the fuel oil additive according to the above (1) or (2). (4) The fuel oil additive according to the above (1) to (3), wherein p is 0 or 1 in the formula (1) representing the hydroxyamine-based compound. (5) The fuel oil composition according to (1) to (4), wherein the content of the fuel oil additive is 0.05 to 0.5% by weight based on the total weight of the fuel oil composition. A fuel oil composition comprising the fuel oil additive described in (1).

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail. The fuel oil additive of the present invention contains a hydroxyamine compound represented by the formula (1). Further, the fuel oil composition of the present invention contains mineral oil as a main component, and the fuel oil additive is added in an amount of 0.001 to 5 based on the total weight of the fuel oil.
% By weight.

(A) Fuel Oil Additive The fuel oil additive of the present invention is a hydroxyamine compound represented by the formula (1). R ¹ in the formula has 6 to 3 carbon atoms.
0 alkyl, alkenyl, and acyl groups. Further, the alkyl group, alkenyl group, and acyl group may be a linear group or a branched group. For example, a hexyl group,
Heptyl, octyl, decyl, dodecyl, tridecyl, tetradecyl, octadecyl, eicosyl, triacontanyl, dodecenyl, octadecenyl, octadecadienyl, palmitoyl, stearoyl, oleoyl And the like.
When the number of carbon atoms is less than 6, the solubility in the fuel oil composition containing a mineral oil as a main component is insufficient, and when the number of carbon atoms exceeds 30, the amount of sludge and deposits increases. Preferred are an alkyl group, an alkenyl group and an acyl group having 10 to 25 carbon atoms. For example, decyl, dodecyl, tridecyl, tetradecyl, octadecyl, eicosyl, dodecenyl, stearoyl, oleoyl and the like can be mentioned.

In the formula, R ² is a methylene group or a group having 2 carbon atoms.
To 3 alkylene groups. For example, a methylene group, an ethylene group, a propylene group, a trimethylene group and the like can be mentioned.

A ¹ , A ² and A ³ in the formula have 2 to 2 carbon atoms.
4 alkylene group. For example, an ethylene group, a propylene group, a trimethylene group, a butylene group and the like can be mentioned. Preferably it is a propylene group. further,
In the fuel oil additive of the present invention, A ¹ , A ² and A ³
It is essential that at least one of them contains a propylene group, and if any of A ¹ , A ² and A ³ does not contain any propylene group, at least one of the intake system and the combustion chamber of a gasoline engine is used. Sludge and deposit deposits are not reduced.

In the formula, m, n and q are 0 or a positive integer, and m + n + q is 1 to 150. m + n +
When q exceeds 150, the amount of sludge and deposit deposited in the intake system and the combustion chamber of the gasoline engine increases. Preferably it is 3-30, More preferably, it is 3-15. P is 0 or a positive integer of 1 to 6. If p exceeds 6, sludge and deposit deposition will increase. Preferably it is 0 or 1.

The hydroxyamine compound represented by the formula (1) is a kind of nonionic surfactant, an emulsifier such as metal working oil, wax and silicone, a softener, a smoothing agent and an antistatic agent in the textile industry. It is conventionally manufactured for use in such applications. For example, “Esopropomin C18 / 18” marketed by Lion Corporation, AKZ
“PROPOMEEN 0/1” marketed by Company O
2 ".

(B) Fuel Oil Composition The fuel oil composition of the present invention is obtained by adding the fuel oil additive of the present invention to a fuel oil containing a mineral oil as a main component, and adding the fuel oil additive to the fuel oil based on the total weight of the fuel oil composition. 0.001 to 5% by weight. The compounding method such as the compounding order is not particularly limited. If the amount is less than 0.001% by weight, the amount of sludge and deposits deposited in the intake system and the combustion chamber of the gasoline engine is insufficiently reduced.
If the amount exceeds the weight percentage, the amount of sludge and deposit deposited increases. Preferably it is 0.05 to 0.5% by weight. Specifically, 1 specified in JIS K2202
No. 2 and No. 2 "Car gasoline", JIS K220
A fuel oil for spark ignition engines, such as "aviation gasoline" specified in 6. "Car gasoline" includes reformed car gasoline, cracked car gasoline, low-lead car gasoline, unleaded car gasoline, and the like.

The mineral oil used in the fuel oil composition of the present invention comprises:
The 10% distillation temperature of the distillation property is 70 ° C. or less and the 97% distillation temperature is 205 ° C. or less, and the real gum content is 5 mg.
/ 100 ml or less of a petroleum fraction which is produced by distilling a crude oil such as a paraffin-based crude oil, a naphthene-based crude oil, a mixed base crude oil, a special crude oil, a mixture thereof, etc. under normal pressure, It is a petroleum fraction obtained by subjecting a heavy petroleum fraction produced by distillation to a combination of hydrocracking, catalytic cracking, catalytic reforming, and the like. These petroleum fractions can be used alone or as a mixture. Components other than mineral oil include a light fraction obtained by dry distillation or liquefaction of coal, a light fraction obtained by synthesizing from methanol, and the like.

The fuel oil additive used in the fuel oil composition of the present invention can be dissolved in a diluent or used in combination with a carrier oil, if desired. As the diluent, a known organic solvent can be used.
Examples thereof include saturated aliphatic hydrocarbons such as n-hexane, n-heptane and isooctane, aromatic hydrocarbons such as toluene and xylene, volatile oils, and fuel oils such as gasoline. In addition, examples of the carrier oil include olefin polymers and the like. The amount of the diluent or carrier oil used is not particularly limited as long as it does not hinder the performance of the fuel oil composition of the present invention. It is 0.05 to 20 parts by weight.

In the fuel oil composition of the present invention, a known fuel oil additive can be used, if desired, as long as its performance is not impaired. For example, an octane improver such as MMT; tricresyl phosphate (TC
P), a surface ignition inhibitor such as trimethyl phosphate; a metal deactivator represented by a salicylidene derivative such as N, N'-salicylidene diaminopropane; an anti-icing agent such as alcohols and succinimide; Corrosion inhibitors such as aromatic amine salts, sulfonates and alkylamine phosphates; antistatic agents such as anionic, cationic and amphoteric surfactants; coloring agents such as azo dyes;
Antioxidants represented by phenols such as di-tert-butyl-p-cresol; aromatic amines such as phenyl-α-naphthylamine; and the like. These additives can be used alone or in appropriate combination of two or more kinds. Further, the amount of the additive is usually based on the total weight of the fuel oil composition,
The content is 0.5% by weight or less, but is not limited to this amount.

Further, the fuel oil composition of the present invention may contain an oxygen-containing compound such as an alcohol compound as long as its performance is not impaired. For example, methanol, ethanol, methyl tert-butyl ether, ethyl tert-butyl ether and the like can be mentioned. The addition amount of oxygen-containing compounds such as alcohol compounds,
It is in the range of 0.1 to 10% based on the total weight of the fuel oil composition, but is not limited to this amount.

[0020]

The present invention will be described in more detail with reference to the following examples. The present invention is not limited at all by the following examples. In the following Examples, the following mineral oils, Compound 1, Compound 2 and Compound 3 were used. In addition, the test method for cleanliness was shown. (1) Mineral oil Table 1 shows the properties of the mineral oil used.

[0021]

[Table 1]

(2) Compound 1 A compound represented by the following formula (2) (manufactured by Lion Corporation:
Esopropomin C18 / 18) was used. Compound 1
Is a hydroxyamine-based compound represented by the formula (1) of the present invention.

[0023]

Embedded image (In the formula, R is an alkyl group having an average carbon number of 12 obtained from coconut oil, P is a propylene group, E is an ethylene group, and n + q is 16.)

(3) Compound 2 A compound represented by the following formula (3) (manufactured by Lion Corporation:
Esomine C / 25) was used.

[0025]

Embedded image (Wherein, R is an alkyl group having an average carbon number of 12 obtained from coconut oil, E is an ethylene group, and n
+ Q is 15. (4) Compound 3 Compound represented by the following formula (4) (manufactured by Lion Corporation:
Esomine O / 20) was used.

[0026]

Embedded image (Where R is an oleyl group, E is an ethylene group, and n + q is 10.)

(5) Detergency test method After the test engine shown in Table 2 was operated under the operating conditions shown in Table 3, the test engine was disassembled and a deposit (hereinafter referred to as IVD) deposited on the intake valve. ) And the deposit (hereinafter referred to as CCD) deposited in the combustion chamber were weighed.

[0028]

[Table 2]

[0029]

[Table 3]

(Examples and Comparative Examples) Compound 1, Compound 2 or Compound 3 was mixed with the mineral oil shown in Table 1 to prepare a fuel oil. The prepared fuel oil was subjected to a cleanliness test. Table 4 shows the content of the compounds 1, 2 and 3 in the fuel oil and the results of the cleanliness test. The results of the cleanliness test were Compound 1, Compound 2 or Compound 3.
It is a change (%) from the result of cleanliness of the fuel oil which is not blended.

[0031]

[Table 4]

As apparent from Table 4, the fuel oil containing Compound 1 significantly reduced both the IVD and the CCD as compared to the fuel oil containing Compound 2 or Compound 3. In contrast, the fuel oil containing Compound 2 or Compound 3 reduced IVD, but increased CCD. That is, the compound 1 containing a propylene group is
As compared with Compounds 2 and 3 containing no propylene group, a very remarkable cleaning effect was exhibited in both the intake valve and the combustion chamber.

[0033]

As described above in detail and specifically, according to the present invention, a fuel oil additive containing a hydroxyamine compound represented by the formula (1) and a mineral oil as main components are provided. The fuel oil composition containing the fuel oil additive in an amount of 0.001 to 5% by weight based on the total weight of the fuel oil composition provides a fuel oil with excellent cleanliness in an intake system and a combustion chamber of a gasoline engine. And a fuel oil composition containing the additive.

Claims (2)

[Claims] 1. A fuel oil additive comprising a hydroxyamine compound represented by the following formula (1). Embedded image (In the formula, R ¹ is an alkyl group, an alkenyl group or an acyl group having 6 to 30 carbon atoms. R ² is a methylene group or an alkylene group having 2 to 3 carbon atoms. A ¹ , A ² and A ³ is an alkylene group having 2 to 4 carbon atoms, and A ¹ ,
At least one of A ² and A ³ contains a propylene group. m, n and q are 0 or a positive integer,
m + n + q is 1 to 150. p is 0 or 1
6 is a positive integer. ) 2. A fuel oil comprising a mineral oil as a main component and the fuel oil additive according to claim 1 in an amount of 0.02% by weight based on the total weight of the fuel oil composition.
A fuel oil composition containing from 0.01 to 5% by weight.