JPH08134476A - Low-sulfur gas oil composition - Google Patents

Abstract

PURPOSE: To obtain a low-sulfur gas oil composition combining excellent antiwearing properties with excellent sliding properties by incorporating at least one of diamine dicarboxylates, diamine monocarboxylates, and monoamine carboxylates into a low-sulfur gas oil fraction. CONSTITUTION: The composition comprises a gas oil fraction (a) having a sulfur content of 0.05wt.% or lower and containing at least one salt (b) selected among diamine dicarboxylates represented by formula I, diamine monocarboxylates represented by formula II, and monoamine carboxylates represented by formula III, the content of the salt (b) being 5-500mg per l of the fraction (a). In the formulae, R<1> , R<2> , R<3> , R<4> , R<5> , R<6> , and R<7> each is a 5-28C (un)saturated hydrocarbon group; n is 2-4; and m is 2-4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a low-sulfur gas oil composition having excellent wear resistance and slidability.

[0002]

2. Description of the Related Art In order to deal with environmental problems, low sulfur treatment of light oil base materials (specifically, deep desulfurization, indirect desulfurization, direct desulfurization, hydrocracking, etc. (Means all processes leading to sulfurization) or low-sulfur gas oil with a sulfur content of 0.05% by weight or less, which is obtained by mixing a light fraction such as kerosene. However, it has been pointed out that these low-sulfur light oils have lower lubricity than conventional light oils. this is,
In some parts of Europe and North America where the sulfur content of diesel oil has been limited to 0.05% by weight or less, a malfunction accident due to malfunction of the distribution type fuel injection pump that supplies fuel to the diesel engine or deterioration of durability has occurred. It originated in what happened a lot. This distributed fuel injection pump is mainly mounted on small and medium-sized diesel vehicles, and is characterized by lubricating the moving parts inside the pump by the lubricating performance of light oil itself.
It has been reported that the deterioration of the lubricity of light oil is associated with a malfunction or deterioration of durability. Therefore, the response is urgent. As a method for improving these, among commercially available corrosion inhibitors for fuel oils (CI), those that also have a lubricity improving function, and lubricity improvers (LI) are added, and lubrication in the wear test evaluation of low sulfur gas oil is performed. There are many examples of research aimed at improving sex.

[0003]

However, although the improvement method using these additives is effective to some extent against the wear inside the pump, it has been found to have the following drawbacks. That is, the internal mechanism of the distributed fuel injection pump is complicated, and the performance of the pump cannot be maintained only by improving the wear. Particularly, in a high-performance distributed fuel injection pump aiming at measures against exhaust gas from a diesel engine, there are many moving parts that require high slidability, and the performance of the pump cannot be fully exhibited. Slidability is the characteristic of the resistance force (sliding friction) that acts in the direction opposite to the applied external force when another object slides on the surface of the object without rolling, and the resistance force that acts on the sliding surface is small. It is preferable that the object slides smoothly on the sliding surface. There are many such sliding surfaces inside the pump, and if the slidability of light oil is poor, it will adversely affect the mechanical control portion of the pump. The present invention has been made in view of the above-mentioned conventional circumstances, and an object thereof is to provide a low-sulfur content gas oil composition having both excellent wear resistance and excellent slidability.

[0004]

Therefore, the present inventors have
As a result of earnest research on the wear resistance and slidability of low sulfur light oil, by adding a carboxylate of a specific amine, a low sulfur content that combines excellent wear resistance and slidability The inventors have found that a gas oil composition can be made, and completed the present invention. That is, the present invention relates to the general formula (1)

[0005]

(Equation 4) (In the formula, R ¹ , R ² and R ³ are saturated or unsaturated hydrocarbon groups having 5 to 28 carbon atoms, and R ¹ , R ² and R ³ may be the same or different, and n Is an integer of 2 to 4.) A dicarboxylic acid salt of a diamine represented by the general formula (2)

[0006]

[Formula 5] (In the formula, R ⁴ and R ⁵ are saturated or unsaturated hydrocarbon groups having ⁵ to 28 carbon atoms, R ⁴ and R ⁵ may be the same or different, and m is an integer of 2 to 4. A monocarboxylic acid salt of a diamine represented by the general formula (3)

[0007]

[Formula 6] (In the formula, R ⁶ and R ⁷ are saturated or unsaturated hydrocarbon groups having 5 to 28 carbon atoms, and R ⁶ and R ⁷ may be the same or different.) At least one selected from the group of carboxylates has a sulfur content of 0.
5 to 500 mg / in a low sulfur gas oil fraction of less than 05% by weight
The present invention provides a low-sulfur light oil composition characterized by being blended in a ratio of 1: 1. Hereinafter, the present invention will be described in detail.

R ¹ , R ² and R ³ in the general formula (1) are saturated or unsaturated hydrocarbon groups each having 5 to 28 carbon atoms, preferably saturated or unsaturated ones having 9 to 24 carbon atoms. It is a hydrocarbon group, particularly preferably a saturated or unsaturated hydrocarbon group of 13 to 20. Examples of the saturated or unsaturated hydrocarbon group having 5 to 28 carbon atoms include a saturated aliphatic hydrocarbon group having 5 to 28 carbon atoms, an unsaturated aliphatic hydrocarbon group, an aromatic group and an aromatic aliphatic group. It is preferably a saturated aliphatic hydrocarbon group or an unsaturated aliphatic hydrocarbon group.

Specific examples of suitable saturated aliphatic hydrocarbon groups include, for example, n-pentyl, isopentyl, neopentyl, tert-pentyl, 2-methylbutyl, n-hexyl, isohexyl, 3-methylpentyl, ethylbutyl, n-heptyl. , 2-methylhexyl, n-octyl, isooctyl, tert-octyl, 2-ethylhexyl, 3-methylheptyl, n-nonyl, isononyl, 1-methyloctyl, ethylheptyl, n-decyl, 1-methylnonyl, n-undecyl. , 1,1-dimethylnonyl, lauryl, n-tetradecyl, n-heptadecyl, n-octadecyl, n-nonadecyl, n-eicosyl, n-heneicosyl, n-docosyl, n-tricosyl, n-tetracosyl, n-pentacosyl, n-hexacosyl, n-hepta Sill, n- octacosyl, cyclopentyl, cyclohexyl, cycloheptyl, cyclooctyl, 3-methylcyclohexyl, 4-methylcyclohexyl, 4-ethyl cyclohexyl, 2-methyl-cyclooctyl.

Specific examples of suitable unsaturated aliphatic hydrocarbon groups include 1,1-dimethylallyl and 3-methyl-
2-butenyl, 3-methyl-3-butenyl, 4-pentenyl, hexenyl, octenyl, nonenyl, decenyl,
1-methylnonenyl, n-undecenyl, 1,1-dimethylnonenyl, n-dodecenyl, n-tetradecenyl,
n-heptadecenyl, n-octadecenyl, n-nonadecenyl, n-eicosenyl, n-heneicosenyl, n
-Dococenyl, n-tricocenyl, n-tetracocenyl, n-pentacosenyl, n-hexacosenyl, n-heptacosenyl, n-octacosenyl, cyclopentenyl, cyclohexenyl, cycloheptenyl, cyclooctenyl, 4-methylcyclohexenyl, 4-ethylcyclohexenyl and the like. Can be mentioned.

As the aromatic group, aryl groups such as phenyl and naphthyl; 4-methylphenyl, 3,4-dimethylphenyl, 3,4,5-trimethylphenyl, 2-ethylphenyl, n-butylphenyl, t- Butylphenyl, amylphenyl, hexylphenyl, nonylphenyl, 2-t-butyl-5-methylphenyl, cyclohexylphenyl, cresyl, oxyethylcresyl, 2-
Methoxy-4-t-butylphenyl, decylphenyl,
Examples thereof include alkylaryl groups such as dodecylphenyl and tetradecylphenyl. As the aromatic aliphatic group, benzyl, 1-phenylethyl, 2-phenylethyl, 2-phenylpropyl, 3-phenylpropyl, 4
-Phenylbutyl, 5-phenylpentyl, 6-phenylhexyl, 1- (2-methylphenyl) ethyl, 1-
(4-Methylphenyl) ethyl, 2- (4-methylphenyl) ethyl, 2-methylbenzyl, 1- (3,4-dimethylphenyl) ethyl, 2- (3,4-dimethylphenyl) ethyl, 4- Methoxybenzyl, 1,1-dimethyl-2-phenylethyl, 2- (4-decylphenyl) ethyl and the like can be mentioned. Particularly preferred specific examples of these saturated or unsaturated hydrocarbon groups include R ¹ of the general formula (1) such as tetradecyl group, tetradecenyl group, hexadecyl group, hexadecenyl group, stearyl group, and oleyl group. R in general formula (1)
Examples of ² and R ³ include a tridecyl group, a tridecenyl group, a pentadecyl group, a pentadecenyl group, a heptadecyl group, and a heptadecenyl group.

In the general formula (1), n is an integer of 2 to 4, preferably 3. The (C _n H _2n ) group is, for example,
A dimethylene group, a trimethylene group, a 2-methylethylene group, a tetramethylene group and the like can be mentioned, but a trimethylene group is preferable. Specific preferred examples of the dicarboxylic acid salt of the diamine represented by the general formula (1) include N-lauryl propylene diamine dilaurate, N-octadecyl propylene diamine dioleate, N-oleyl propylene diamine dioleate, N-oleyl propylenediamine distearate, N-octadecyl propylenediamine distearate, N-beef propylenediamine dioleate, N-beef propylenediamine distearate, N-beef propylenediamine dibeef fatty acid salt And so on.

R ⁴ of the general formula (2) is the same as R ¹ of the general formula (1), and preferable ones and particularly preferable ones are also the same. R ⁵ in the general formula (2) is R ^{2 in the} general formula (1).
And R ³ are the same, and preferable ones and particularly preferable ones are also the same. M in the general formula (2) is the same as n in the general formula (1), and preferable ones and particularly preferable ones are also the same. (C in the general formula (2)
_{The m} H _2m ) group is the same as the (C _n H _2n ) group of the general formula (1), and the preferable ones and particularly preferable ones are also the same. Preferable specific examples of the monocarboxylic acid salt of the diamine of the general formula (2) include, for example, N-laurylpropylenediamine.N'-laurate, N-octadecylpropylenediamine.N'-oleate, N-oleyl. Propylene diamine / N'-oleate, N-oleyl propylene diamine / N'-stearate, N-octadecyl propylene diamine / N'-stearate, N
-Tallow propylenediamine / N'-oleate, N-
Beef tallow propylenediamine / N'-stearate, N-
Beef tallow propylenediamine / N'-beef tallow fatty acid salt and the like can be mentioned.

Furthermore, R ⁶ in the general formula (3) is the same as R ¹ in the general formula (1), preferred ones, are also the same respectively particularly preferred. R ⁷ of the general formula (3) is the same as R ² and R ³ of the general formula (1), and preferable ones,
The particularly preferable ones are also the same. General formula (3)
Specific preferred examples of the monoamine carboxylate of
For example, laurylamine laurate, octadecylamine oleate, oleylamine oleate,
Examples thereof include oleylamine / stearate, octadecylamine / stearate, tallow amine / oleate, tallow amine / stearate, and tallow amine / tallow fatty acid salts.

The dicarboxylic acid salt of the diamine represented by the general formula (1) can be synthesized, for example, by the following reaction.

[0016]

[Formula 7] (In the formula, R ¹ , R ² , R ³ and n have the same meanings as in the general formula (1).) Preferable specific examples of the diamine of the above reaction formula include, for example, N-laurylpropylenediamine, N -Tetradecyl propylene diamine, N-tetradecenyl propylene diamine, N-hexadecyl propylene diamine, N-hexadecenyl propylene diamine, N-octadecyl propylene diamine, N-octadecenyl propylene diamine, N-eicosyl Propylene diamine, N-eicosenyl propylene diamine, etc. are mentioned. Further, specific preferred examples of the carboxylic acid represented by the above reaction formula include lauric acid, myristic acid, palmitic acid, stearyl acid, oleic acid, linoleic acid and linolenic acid. The carboxylic acid preferably has 10 to 26 carbon atoms, more preferably 12 to 24 carbon atoms, and particularly 1
6 to 22 are preferable.

The monocarboxylic acid salt of the diamine represented by the general formula (2) may be obtained as a by-product of the above reaction formula, but can be synthesized by the following reaction.

[0018]

(Equation 8) (In the formula, R ⁴ , R ⁵ and m have the same meanings as in the general formula (2).) Suitable specific examples of the diamine and carboxylic acid of this reaction formula are represented by the general formula (1) ) Is the same as the case.

The monoamine carboxylate represented by the general formula (3) can be synthesized, for example, by the following reaction.

[0020]

[Formula 9] (In the formula, R ⁶ and R ⁷ have the same meaning as in the general formula (3).)

Specific preferred examples of the amine of the above reaction formula are, for example, N-laurylamine, N-tetradecylamine, N-tetradecenylamine, N-hexadecylamine, N-hexadecenylamine and N-. Octadecylamine, N-octadecenylamine, N-eicosylamine, N-eicosenylamine and the like can be mentioned. Also,
Suitable specific examples of the carboxylic acid in the above reaction formula are the same as those in the general formula (1). Further, the naturally occurring mixed fatty acids, and the aliphatic N-substituted alkylenediamines and aliphatic amines having naturally occurring mixed fatty acids and mixed alkyl groups and mixed alkenyl groups derived from natural oils are particularly preferable in the present invention. Synthesize effective compounds. Suitable specific examples of these naturally occurring mixed fatty acids include:
Examples thereof include beef tallow fatty acid, coconut fatty acid, soybean oil fatty acid and the like. Further, as preferable specific examples of the aliphatic N-substituted alkylenediamine and the aliphatic amine having a mixed alkyl group derived from a naturally occurring mixed fatty acid or natural oil, and a mixed alkenyl group, for example, N-beef propylenediamine. , N-coconut propylenediamine, N-soybean oil propylenediamine, tallow amine, coconut amine, soybean oil amine and the like.

The sulfur content used in the present invention is 0.0
The low sulfur gas oil fraction containing 5% by weight or less has a sulfur content of 0.
If the amount is 05% by weight or less, there are no restrictions on the composition and various gas oil fractions can be used. Here, the light oil fraction is JIS
As long as the temperature range of the distillation property according to the atmospheric distillation method specified in K2254 is a fraction within the range of 150 to 390 ° C. and satisfies the specifications other than the sulfur content specified in JIS K2204, the base material There are no prescription restrictions. These low sulfur light oil fractions may be used alone or in combination of two or more without any problem.

In the low sulfur gas oil composition of the present invention,
The amount of at least one selected from the group consisting of the dicarboxylic acid salt of diamine, the monocarboxylic acid salt of diamine, and the carboxylate salt of monoamine is 5% in the low sulfur gas oil fraction having a sulfur content of 0.05% by weight or less. To 500 mg / l, preferably 10 to 300 mg / l, and particularly preferably 20 to 150 mg / l.

The low sulfur gas oil composition of the present invention comprises:
Other various additives such as a cetane number improver, a surfactant, a fluidity improver, a preservative, a rust preventive, a defoaming agent, a detergent,
Antioxidants, hue improvers, lubricity improvers and the like may be added. As the cetane number improver, for example, 2-chloroethyl nitrate, 2-ethoxyethyl nitrate, isopropyl nitrate, butyl nitrate, mixed amyl nitrate, first amyl nitrate,
Secondary amyl nitrate, isoamyl nitrate, hexyl nitrate,
Hexyl nitrate, n-heptyl nitrate, n-octyl nitrate, cyclohexyl nitrate, ethylene glycol dinitrate, butyl peroxide, caproyl peroxide, heptyl peroxide, oleyl peroxide, oleyl peroxide, triacetone peroxide , Acetylbenzoyl peroxide, nitromethane, nitroethane, 1-nitropropane, 2-nitropropane, nitrobenzene, diphenylamine, aniline, acetone, methyl acetate, butyl bromide, ethane trichloride, ethyl ether, butylcarbinol, diethylcarbinol, etc. Is mentioned.

Examples of fluidity improvers include ethylene-
Examples thereof include vinyl acetate copolymers, ethylene-alkyl acrylate copolymers, chlorinated polyethylenes, polyalkyl acrylates, alkenyl succinamide compounds. Examples of the preservative include alkenyl succinic acid and its derivatives, esters such as sorbitan monooleate, wax oxides, neutral barium sulfonate, sorbitan triol, paraffins and other amines. Examples of the defoaming agent include polydimethyl siloxane. Examples of the detergent include succinimide, benzylamine, succinic acid ester, 1
-A morpholine salt of a copolymer of octadecene and vinyl alcohol or vinyl acetate, a copolymer of octadecyl vinyl ether and maleic anhydride, and the like.

As the antioxidant, for example, 2,6-di-
tert-butyl-4-methylphenol, 2,4-dimethyl-6-tert-butylphenol, 2,6-di-tert-butylphenol, 75% or more of 2,6-
Di-tert-butylphenol and 25% or less ter
Mixture of t-butylphenol, 72% or more of 2,4-
Dimethyl-1,6-tert-butylphenol and 28
% Or more of phenolic antioxidants such as monomethyl and dimethyl-tert-butylphenol, amine-based oxidations such as N, N′-diisopropyl-p-phenylenediamine and N, N′-di-sec-butyl-p-phenylenediamine Examples of the antioxidant include amine-based antioxidants such as N, N′-diisopropyl-p-phenylenediamine and N, N′-di-sec-butyl-p-phenylenediamine.

[0027]

EXAMPLES Next, the present invention will be described more specifically by way of Examples and Comparative Examples. The present invention is not limited to these examples. The base oil used in Examples and Comparative Examples is a gas oil prepared by distilling a light oil fraction obtained by atmospheric distillation from a crude oil mainly composed of Middle Eastern crude oil through a deep desulfurization process to a sulfur content of 0.05% by weight or less. is there. The general properties of the base oil are shown in Table 1. Further, various properties of the additive used in the comparative example are shown in Table 2.

[0028]

[Table 1] Note The abbreviations in Table 1 have the following meanings. TD%: Total distillate amount RO: Residual oil amount LOSS: Loss amount

[0029]

[Table 2] Note In Table 2, the words shown in the first line of the product name mean the following company names. Ethyl: Ethyl Petroleum Add
itives. Inc. DuPont: DuPont Company EXXON: EXXON CHEMICAL COMP
ANY Lubrizol: Lubrizol Corpora
section

The evaluation tests of Examples and Comparative Examples were carried out by the following method. (1) Abrasion test The abrasion test was performed using a vibration friction wear tester manufactured by Optimol. The test conditions are as follows. Load: 3N Amplitude: 0.60 mm Vibration frequency: 60 Hz Sample temperature: 60 ° C. Metallurgy-ball: SUJ 2 Metallurgy-flat: SUJ 2 Ball Diameter: 10 mm Test time: 60 minutes The wear evaluation was made of wear marks on the test ball. Performed by diameter. The diameter of the wear mark is the relative value of the wear mark diameter when the wear mark diameter of the base oil is 100, which is the average value of the diameter in the vibration direction and the diameter in the direction perpendicular thereto.

(2) Measurement of friction coefficient Each sample was treated with Millipore filter paper (material: HA, size: 0.
A pretreatment for removing impurities such as dust was performed by suction filtration with 45 μm). The friction coefficient was measured by measuring the boundary friction coefficient with a Soda T-shaped pendulum friction tester type II. The measurement conditions are as follows. Initial amplitude: 0.5 radian Horizontal weight: 30 g Horizontal weight distance: 340 mm Vertical weight: 15 g Vertical weight distance: 100 mm Steel ball: Advanced 3/16 grade, SUJ2 Roller pin: SUJ2 Sample temperature: 25 ° C , Oscillate the pendulum repeatedly (50 to 80 times),
The average value after reaching the steady state (20 to 40 times or more) is calculated, and the average value is repeated 1 to 3 times as the friction coefficient,
It is represented by the relative friction coefficient when the friction coefficient of the base oil is 100.

Examples 1 to 14 The base oil of deep-degasified light oil shown in Table 1 was added with the diamine dicarboxylic acid salt, diamine monocarboxylic acid salt, or monoamine carboxylate salt shown in Table 3 at 100 mg / base oil.
A low sulfur gas oil composition was prepared by mixing and mixing in a ratio of 1 l. An abrasion test and a friction coefficient measurement were carried out for these low sulfur gas oil compositions. Table 3 shows the results.

Comparative Examples 1 to 6 The base oil of deep-degasified light oil shown in Table 1 was blended with the conventional additives shown in Table 2 at a ratio of 100 mg / l to the base oil and mixed to obtain a low sulfur content. A light oil composition was prepared. In addition, the evaluation was also performed in the case of no addition. An abrasion test and a friction coefficient measurement were carried out for these low sulfur gas oil compositions. Table 3 shows the results.

[0034]

[Table 3]

Example 15 To the base oil of deep-degasified light oil shown in Table 1, N-beef tallow propylenediamine dioleate was blended in a ratio shown in Table 4 with respect to the base oil and mixed to give a low sulfur gas oil composition. The thing was prepared. A friction test and a friction coefficient measurement were performed on these low sulfur content gas oil compositions. The results are shown in Table 4.

Examples 16 and 17 N-beef propylenediamine dioleate was blended with the base oil of deep-degasified light oil shown in Table 1 at a ratio shown in Table 4 with respect to the base oil and mixed, and further HiTEC- 580 or DCI-4A was mixed with the base oil in the proportions shown in Table 4 and mixed to prepare a low-sulfur light oil composition. A friction test and a friction coefficient measurement were performed on these low sulfur content gas oil compositions. The results are shown in Table 4.

Example 18 Octadecylamine oleate was mixed with the base oil of deep-degasified light oil shown in Table 1 at a ratio shown in Table 4 with respect to the base oil, and mixed to prepare a low sulfur gas oil composition. did. A friction test and a friction coefficient measurement were performed on these low sulfur content gas oil compositions. The results are shown in Table 4.

Examples 19 and 20 Octadecylamine oleate was mixed with the base oil of the deep-degasified light oil shown in Table 1 at a ratio shown in Table 4 with respect to the base oil and mixed, and further HiTEC-580 or DCI. −
4A was blended with the base oil in the proportions shown in Table 4 and mixed to prepare a low sulfur light oil composition. A friction test and a friction coefficient measurement were performed on these low sulfur content gas oil compositions. The results are shown in Table 4.

Comparative Example 6 A low-sulfur content gas oil composition consisting only of the base oil of deep degassed oil shown in Table 1 was prepared, and the low-sulfur content gas oil composition was subjected to a friction test and a friction coefficient measurement. 10
It was set to 0.

[0040]

[Table 4]

Example 21 N-beef propylenediamine dioleate was added to the base oil of the deep degassed oil shown in Table 1 at 0 mg / base oil.
1, 12.5 mg / l, 50 mg / l, 125 mg / l
And 250 mg / l were mixed and mixed to prepare a low sulfur light oil composition. The coefficient of friction of these low sulfur gas oil compositions was measured. The results are shown in Table 5.

Example 22 Octadecylamine oleate was added to the base oil of the deep degassed oil shown in Table 1 at 0 mg / l and 50 mg based on the base oil.
/ L, 125 mg / l and 250 mg / l were mixed and mixed to prepare a low sulfur gas oil composition. The coefficient of friction of these low sulfur gas oil compositions was measured.
The results are shown in Table 5.

[0043]

[Table 5]

[0044]

INDUSTRIAL APPLICABILITY The present invention can provide a low-sulfur gas oil composition having both excellent wear resistance and excellent slidability. Therefore, the low sulfur gas oil composition of the present invention is extremely useful in practice.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yasuo Iwamiya 1134-2 Gongendo, Satte City, Saitama Cosmo Research Institute Co., Ltd.

Claims (1)

[Claims] 1. A general formula (1): (In the formula, R ¹ , R ² and R ³ are saturated or unsaturated hydrocarbon groups having 5 to 28 carbon atoms, and R ¹ , R ² and R ³ may be the same or different, and n Is an integer of 2 to 4.) A dicarboxylic acid salt of a diamine represented by the general formula (2): (In the formula, R ⁴ and R ⁵ are saturated or unsaturated hydrocarbon groups having ⁵ to 28 carbon atoms, R ⁴ and R ⁵ may be the same or different, and m is an integer of 2 to 4. And a dicarboxylic acid monocarboxylic acid salt represented by the general formula (3): (In the formula, R ⁶ and R ⁷ are saturated or unsaturated hydrocarbon groups having 5 to 28 carbon atoms, and R ⁶ and R ⁷ may be the same or different.) At least one selected from the group of carboxylates has a sulfur content of 0.
5 to 500 mg / in a low sulfur gas oil fraction of less than 05% by weight
A low sulfur gas oil composition, which is blended in a ratio of 1.