WO2004058925A1

WO2004058925A1 - Low-pollution liquid fuel for internal combustion engine

Info

Publication number: WO2004058925A1
Application number: PCT/JP2002/013470
Authority: WO
Inventors: Takashi Tsuchida; Akihiro Azuma
Original assignee: Sangi Co., Ltd.
Priority date: 2002-12-24
Filing date: 2002-12-24
Publication date: 2004-07-15
Also published as: AU2003254796A1; CN1329489C; WO2004058926A1; TW200411041A; CN1717469A; AU2002357511A1; JPWO2004058926A1; US20060137243A1

Abstract

A low-pollution liquid fuel for internal combustion engines which comprises 10 to 75 wt.% alcohol ingredient comprising one or more aliphatic monohydric alcohols having 2 to 6 carbon atoms in the molecule and 25 to 90 wt.% (un)saturated hydrocarbon ingredient, and contains an aluminum corrosion inhibitor in such an amount that it can prevent aluminum corrosion at a given temperature, the aluminum corrosion inhibitor comprising at least one of methanol, glycol type hydrocarbons, ketone type hydrocarbons, ester type hydrocarbons, and aldehyde type hydrocarbons.

Description

Description Low-pollution liquid fuel for internal combustion engines

The present invention achieves the same or higher efficiency and output as conventional gasoline without changing the structure or material of the existing gasoline internal combustion engine, and provides carbon monoxide (CO) in exhaust gas. In addition, the concentration of hydrocarbons and hydrocarbons (HC) is significantly reduced compared to conventional gasoline, and the reduction of nitrogen oxide (NOx) concentration in exhaust gas can be reduced. It relates to a manufacturing method. Background art

As part of our commitment to addressing environmental issues in recent years, the issue of air pollution due to vehicle emissions has become even more important. Carbon monoxide (CO) and hydrocarbons in these vehicle emissions have become increasingly important. As a fuel for internal combustion engines that can significantly lower the (HC) concentration and can be used in place of conventional gasoline, there are light naphtha that has already been put into practical use and alcohol added, and a fuel that the present inventor has previously filed. As mentioned, there is a mixture of light naphtha with alcohol and ether.

These light naphtha mixed with alcohol, or synthetic liquid fuel obtained by mixing light naphtha with alcohol and ether, as described above, contain carbon monoxide (CO) and hydrocarbons (HC) as well as alcohol, etc. However, since the sulfur component is much smaller than that of light naphtha, etc., SOx etc. can be reduced, which is preferable.However, since they contain a relatively high concentration of alcohol, these synthetic liquid fuels are However, if it comes into contact with metals, especially aluminum and aluminum alloys, at high temperatures and high pressures, these aluminum and aluminum alloys will corrode (elut) over a long period of use, causing problems.

Therefore, as a method for solving the elution of aluminum and aluminum alloys, the present inventors first added a predetermined ratio of inexpensive water to alcohol in the synthetic liquid fuel. And dissolution of aluminum alloy etc. However, the use of such water is preferable because water is inexpensive, easily available and excellent in safety, etc., but water is used in an amount that can provide good aluminum corrosion prevention ability. When added to synthetic liquid fuel, when the synthetic liquid fuel is stored at low temperatures, especially at temperatures below ice temperature, in cold regions, etc., these waters may separate and the fuel identification may be reduced. However, there is a problem that the separated water solidifies in the worst case, and in the worst case, cannot be used as a fuel.

Accordingly, the present invention has been made in view of the above problems, and has as its object to improve the low-temperature stability of a synthetic liquid fuel containing these alcohols at a relatively high concentration. Disclosure of the invention

In order to achieve the above object, the low-pollution liquid fuel for an internal combustion engine of the present invention comprises a monohydric aliphatic monohydric alcohol having 2 to 6 carbon atoms in a molecule or a mixed alcohol component of 10 weight%. % To 75% by weight and 25 to 90% by weight of a saturated or unsaturated hydrocarbon component, wherein the obtained low-pollution liquid fuel for an internal combustion engine is predetermined. An aluminum corrosion inhibitor in an amount capable of preventing aluminum corrosion at a predetermined temperature, wherein the aluminum corrosion inhibitor comprises methanol, glycol hydrocarbons, ketone hydrocarbons, ester hydrocarbons, aldehyde hydrocarbons, It is characterized by being at least one species.

According to this feature, as an aluminum corrosion inhibitor capable of preventing aluminum corrosion at a predetermined temperature, methanol, glycol hydrocarbons, ketone hydrocarbons, ester hydrocarbons, aldehyde hydrocarbons, at least 1 By using the seed, the low-temperature stability of the obtained low-pollution liquid fuel for internal combustion engines can be improved as compared with the case where an amount of water capable of preventing aluminum corrosion is added as the aluminum corrosion inhibitor.

The low-pollution liquid fuel for an internal combustion engine of the present invention is preferably such that the low-pollution liquid fuel for an internal combustion engine contains at least water as the aluminum corrosion inhibitor.

This way, cheap water is used as part of the aluminum corrosion inhibitor This makes it possible to reduce the amount of the relatively expensive aluminum corrosion inhibitor other than water, thereby preventing the cost of the resulting low-pollution liquid fuel for internal combustion engines from increasing.

The low-pollution liquid fuel for an internal combustion engine according to the present invention is characterized in that the low-pollution liquid fuel for an internal combustion engine has at least one carbon atom in a molecule of 12 or less and at least one ether bond in the molecule. It is preferable to contain 5 to 30% by weight of various ether components.

In this way, by containing the ether component in an amount of 5 to 30% by weight, it is possible to prevent the alcohol component and the saturated or unsaturated hydrocarbon component in the obtained liquid fuel from being separated from each other during long-term storage or the like. BRIEF DESCRIPTION OF THE FIGURES

FIG. 1 is a flowchart showing a method for producing a low-pollution liquid fuel for an internal combustion engine in an embodiment of the present invention.

FIG. 2 is a graph showing the relationship between the ratio of alcohol and hydrocarbon components in liquid fuel and the concentration of pollutant gas in exhaust gas.

FIG. 3 is a view showing each composition in this example.

FIG. 4 is a diagram showing the test results of Formulation 1 of this example.

FIG. 5 is a view showing a test result of Formulation 2 of the present example.

FIG. 6 is a view showing a test result of Formulation 3 of the present example.

FIG. 7 is a view showing a test result of Formulation 4 of the present example.

FIG. 8 is a view showing a test result of Formulation 5 of this example.

FIG. 9 is a view showing a test result of Formulation 6 of the present example.

FIG. 10 is a view showing a test result of Formulation 7 of the present example.

FIG. 11 is a view showing a test result of Formulation 8 of the present example.

FIG. 12 is a view showing a test result of Formulation 9 of the present example.

FIG. 13 is a diagram showing the test results of Formulation 10 of this example.

FIG. 14 is a diagram showing the test results of Formulation 11 of this example.

FIG. 15 is a view showing a test result of Formulation 12 of the present example.

FIG. 16 is a diagram showing the test results of Formulation 13 of this example. FIG. 17 is a diagram showing the test results of Formulation 14 of this example ₍ FIG. 18 is a diagram showing the test results of Formulation 15 of this example ₍

FIG. 19 shows the test results of Formulation 16 Formulation 1 + Ether) of this example.

FIG. 20 is a view showing the test results of Formula 17 (Formula 2 + Ether) of this Example.

FIG. 21 is a diagram showing the test results of Formulation 18 Formulation 3 + Ether) of this Example.

FIG. 22 is a view showing the test results of Formulation 19 Formulation 4 + Ether) of this Example.

FIG. 23 is a view showing the test results of Formulation 20 of Formulation 5 of Formula 5 + ether).

FIG. 24 is a view showing the test results of Formulation 2 Formulation 6 and Ether) of the present example.

FIG. 25 shows the test results of Formulation 22 Formulation 7 + Ether) of this example.

FIG. 26 is a diagram showing the test results of Formulation 23 Formulation 8 + ether) of the present example.

FIG. 27 is a diagram showing the test results of Formulation 24 Formulation 9 + Ether) of this Example.

FIG. 28 is a view showing a test result of the composition of the present example (combination of 25 and 10 + ether).

Figure 29 is a figure "because ₀ showing test results of formulations 26 formulation 1 1 + ether) of this embodiment

FIG. 30 is a view showing the test results of the formulation 27 blending 12 + ether) of the present example.

FIG. 31 is a view showing the test results of the composition 28 of the present example, the composition 13 + ether).

FIG. 32 is a diagram showing the test results of Compound 29 of the present example, Compound 14 and Ether). It is.

FIG. 33 is a view showing the test results of Formula 30 (Formula 15 + ether) of this Example.

FIG. 34 is a graph showing the effect of adding an aluminum corrosion inhibitor in each composition of this example. BEST MODE FOR CARRYING OUT THE INVENTION

The alcohols, linear hydrocarbons, and ethers as main raw materials used in the present invention, and methanol, dalicols, ketones, esters, and aldehydes as aluminum corrosion inhibitors are described below. For each of hydrogen and water, the content ratio in the obtained synthetic liquid fuel, what can be suitably used, and the reason are described below.

First, as the main raw material alcohol as a main component of the obtained synthetic liquid fuel, a linear or non-linear alcohol having 2 to 6 carbon atoms in the alcohol molecule is preferably used. be able to. By using alcohols having more carbon atoms than ethyl alcohol having 2 carbon atoms in the molecule as these main raw material alcohols and not containing much methanol, which is an alcohol having 1 carbon atoms, which is extremely polar, it is obtained. It is possible to avoid increasing the polarity of the whole synthetic liquid fuel to be used, and swelling a rubber pipe for fuel supply or the like with the methanol having such a high polarity.

There are secondary and tertiary polyhydric alcohols as the main raw material alcohols, but these higher alcohols are expensive and difficult to obtain, so that the price of the synthetic liquid fuel obtained becomes high. Therefore, it is preferable to use a primary alcohol (monohydric).

When the number of carbon atoms in the molecular chains contained in these alcohol molecules is 7 or more, especially more than 10, the volatility at ordinary room temperature or low temperature is greatly reduced, and the combustion time in combustion is reduced. Tend to be longer, which tends to cause a difference from the combustion rate of hydrocarbons, making it unsuitable as a gasoline replacement fuel. In case Is preferably 6 or less.

In addition, as the main raw material alcohol, not only the alcohol alone but also two to five kinds of alcohols which are different depending on the price, availability, plant capacity and the like can be used in combination. By using two or more different alcohols in this way, the specific gravity of synthetic fuels due to variations in the composition of light naphtha and recycled hydrocarbon used as liquid fuel can be reduced, and the ratio of these alcohols can be reduced. Since the power and the burning speed of each alcohol are slightly different for each alcohol, the combustion speed can be adjusted to that of gasoline by combining these alcohols. It is preferable from the viewpoint of work when using these gasoline facilities, and as a combination of these alcohols, ethanol, isopropyl alcohol (IPA), isobutyl alcohol, etc. (IBA), butyl alcohol, pentanol, hexanol, etc. It is preferable to use a non-linear aliphatic monohydric alcohol, in particular, since the octane value obtained thereby can be improved, but the present invention is not limited to this.

If the ratio of these alcohols in the synthetic fuel is less than 25% by weight, as shown in Fig. 2, carbon monoxide (CO) and hydrocarbons (HC) in the exhaust gas gradually increase to 15% by weight. If it is lower than the above, hydrocarbons (HC) will increase remarkably, and if the weight% of the mixed alcohol component exceeds 55% by weight, it will be 55 weight. When the obtained fuel is used as fuel for a gasoline engine from around / ₀ , the gasoline engine has a large change in acceleration (acceleration / deceleration), and the amount of fuel delivered increases the engine speed. In some cases, the combustion speed of the resulting fuel is likely to be out of synchronization with the hydrocarbon and alcohol, causing unburned fuel and burning fuel to flow into the exhaust system and travel. If the proportion of the alcohol exceeds 75% by weight, the non-synchronization of the combustion may become more severe and hinder running. Therefore, the alcohol ratio may be 15 to 75% by weight. %, More preferably 25 to 55% by weight. Next, a saturated or unsaturated hydrocarbon can be suitably used as the hydrocarbon, but when the number of carbon atoms contained in the hydrocarbon molecule exceeds 13, the volatilization of the hydrocarbon is prevented. The ignition capability of the ignition device due to the deterioration of the ignition performance, and the increase in the concentration of CO and HC in the exhaust gas due to the residue from the combustion. It may be appropriately selected in consideration of the concentrations of CO and HC, the ignition capability of the ignition device, and the like, and preferably, a saturated or unsaturated hydrocarbon having 9 or less carbon atoms may be used. Among them, light naphtha, which is a mixture of saturated hydrocarbons, can be suitably used because of its low price.

Many of these light naphthas contain aromatic hydrocarbons such as B (benzene), T (toluene), and X (xylene). However, when the concentration of these aromatic hydrocarbons is high, gasoline fuel As in the case, the concentration of CO and HC in the exhaust gas increases, and the harmful aromatic hydrocarbons such as B (benzene), T (toluene), and X (xylene) themselves are discharged into the exhaust gas. Therefore, use aromatic hydrocarbons such as B (benzene), T (toluene) and X (xylene) that have been refined so that the content of each is less than 1%. Is preferred.

In addition, these light naphthas have significantly different intrinsic sulfur concentrations depending on the crude oil producing regions. However, when these sulfur concentrations are high, SO x in the exhaust gas increases, so that 0.01% It is preferable to desulfurize as follows.

In addition to these light naphtha, waste plastics, which are currently in large quantities, are being recycled in the form of oil, which is an integral part of the recycling process. Re-refined oil fractionated to 220 ° C can also be used. Since these re-refined oils are desulfurized at the stage of naphtha, which is a raw material for plastic stake, the SOx in exhaust gas can be further reduced.

When using these recycled oils, if the initial boiling point exceeds 60 ° C, startability will be significantly reduced in low temperatures and cold regions, and the same startability as gasoline will not be obtained. If the end point is higher than 220 ° C, the engine will not be able to generate the engine power as designed at high engine speeds. It is preferable to use a re-refined oil fractionated at 0 ° C and an end point of 180 to 220 ° C.

As for the ratio of these hydrocarbon components in the synthetic fuel, if the ratio of these hydrocarbons is 20% by weight or less, the alcohol component and the ether component become excessively large, and As in the case of a large amount of fuel, the combustion speed becomes far from that of conventional gasoline, and the internal combustion engine with a large number of revolutions, such as a car, does not follow the acceleration well. Would.

On the other hand, if the hydrocarbon ratio exceeds 80% by weight, the effect of reducing CO, HC and NOx in the exhaust gas is rapidly reduced.

Next, as the ether component, at least one kind of ether having 12 or less carbon atoms in the molecule and having at least one ether bond in the molecule can be used.

These ether components are not absolutely necessary, but the addition of these ether components is preferable because the hydrocarbon component and the alcohol component can be prevented from being separated due to aging or the like. When these ether components are added, the ratio depends on the ratio composition of the other components to be used, but may be appropriately selected depending on the storage stability to be obtained, but is usually 5% by weight or less. Therefore, the effect of the storage stability is small. On the other hand, when the ether ratio is 30% by weight or more, an ether odor is generated as a fuel, and the volatility is greatly increased, and the evaporation amount of the fuel is increased. Since the loss in stockpiling increases, the content may be set to 5 to 30% by weight.

These ethers can be used as long as they have at least an ether bond in the molecule, but if the number of carbon atoms in the ether molecule used is large, the volatility of the ether decreases. Since the ability to improve the compatibility between alcohol and hydrocarbons decreases, the price is high, and it is difficult to obtain the quantity of fuel, the carbon number should be 12 or less.

In addition, when ethers having a relatively large number of carbon atoms are used, as described above, separation between hydrocarbons and alcohols is likely to occur, and thus, for example, ethylene glycol regimeci / leitenole and ethylene glycol corn oleage The molecule may have two or more ether bonds, such as tinoleate / le, or a hydroxyl group (O), in addition to the ether bond, in the molecule, such as ethylene glycol monoethyl ether.

H), it is preferable to avoid the separation of hydrocarbons and alcohols due to a decrease in polarity, and it is preferable to use multiple ether bonds in these molecules. By using a compound having a hydroxyl group (OH) in addition to the ether bond, a separation prevention effect equivalent to or higher than that of a conventional low carbon number ether may be obtained.

As these ethers, not only a single ether but also a mixture of an ether having a small number of carbon atoms and an ether having a large number of carbon atoms from the viewpoint of price, volatility and compatibility between the hydrocarbon and the alcohol. May be used.

Next, methanol, glycol hydrocarbons, ketone hydrocarbons, ester hydrocarbons, aldehyde hydrocarbons, and water can be used as the aluminum corrosion inhibitor.

As the glycol hydrocarbons to be used as the aluminum corrosion inhibitor, high molecular weight polymers such as ethylene glycol and propylene glycol, which have relatively low molecular weights, are preferred because they have high viscosity and increase the viscosity of the resulting synthetic fuel. It can be used for

In addition, the ketone hydrocarbon used as an aluminum corrosion inhibitor may be any hydrocarbon having at least one ketone bond in the molecule, and ketone hydrocarbons having a large number of carbon atoms are expensive. For this reason, it is possible to preferably use, for example, acetone / dimethyl ketone, methylethyl ketone, getyl ketone, methyl n-propyl ketone, methyl isobutyl ketone, acetinoleacetone, etc., which have a relatively small number of carbon atoms in the molecule. .

The ester hydrocarbon used as the aluminum corrosion inhibitor may be any hydrocarbon having at least one ester bond in the molecule, and the price of the ester hydrocarbon having a large number of carbon atoms is high. For example, methyl formate, ethyl formate, methyl acetate, ethyl acetate, etc., which have a relatively small number of carbon atoms in the molecule, can be preferably used.

The aldehyde hydrocarbon used as an aluminum corrosion inhibitor may be any hydrocarbon having at least one aldehyde bond in the molecule, and the price of an aldehyde hydrocarbon containing a large number of carbon atoms is high. For example, acetoaldehyde ゃ, propionaldehyde, butylaldehyde, etc., which have a relatively small number of carbon atoms in the molecule, can be suitably used. In addition, as these aluminum corrosion inhibitors, methanol, glycol hydrocarbons, ketone hydrocarbons, ester hydrocarbons, aldehyde hydrocarbons, and the amount of water to be added, these aluminum corrosion inhibitors are: Since the price is higher than that of alcohol / naphtha, which is the main raw material, it is possible to prevent the occurrence of aluminum corrosion due to dry corrodion at a specified temperature of the obtained synthetic liquid fuel, for example, at 80 to 120 degrees. These addition amounts may be set to the minimum amount, and as shown in Examples described later, depending on the type of the aluminum corrosion inhibitor to be used, the addition amount may be at most 10% by weight or less.

(Example)

FIG. 1 is a flowchart showing a method for producing a liquid fuel for an internal combustion engine according to the present embodiment. The liquid fuel for an internal combustion engine according to the present invention comprises at least one kind of aliphatic monohydric (primary) alcohol, saturated or unsaturated hydrocarbon, having 12 or less carbon atoms in the molecule, and having an ether in the molecule. It is mainly composed of a single component or a mixed ether containing an ether having a bond, and an aluminum corrosion inhibitor. After each of these raw fuels is weighed to a predetermined weight%, the weight ratio of the raw fuel is relatively large. First, ether having a polarity lower than that of the aliphatic primary alcohol is added to and mixed with the light-weight naphtha as the hydrocarbon having the smallest polarity.

Next, the weighed alcohol and aluminum corrosion inhibitor are added to and mixed with the mixture of the lightweight naphtha and the ether.

After the addition of the alcohol and the aluminum corrosion inhibitor, the specific gravity of the mixed liquid fuel is measured, and the specific gravity is 0.735 or more and a predetermined specific gravity (in this example, 0.755 or less). In some cases, the above-mentioned alcohol is appropriately added to adjust the specific gravity so that the specific gravity becomes 0.755.

Hereinafter, examples of the composition of the fuel composition produced in this example by the above-described production method are shown below. In this example, as shown in FIG. 3, various basic compositions were prepared in combination with the ratio of alcohol added to naphtha, and methanol and glycol hydrocarbons as various aluminum corrosion inhibitors were prepared in each basic composition. , Ketone hydrocarbons, ester hydrocarbons, aldehyde hydrocarbons, and water are added to make a composition, and aluminum is immersed in each composition to raise the temperature of aluminum to a predetermined high temperature. In addition to conducting a food test, the low-temperature stability of each blend was evaluated based on the presence or absence of fuel separation at low temperature (in this example, 1 oC below zero).

The results of the aluminum corrosion test when an aluminum corrosion inhibitor is added to each composition and the results of storage stability at room temperature and low temperature are described below with reference to Figs. 3 to 33.

The test method for aluminum elution (weight loss) and the test method for storage stability are as follows.

Aluminum dissolution test>

(1) Weigh a prescribed amount of sample fuel and water (distilled water) into a SUS ball mill pot (300 ml), and bring the total amount to 100 m1.

② Immerse a pure aluminum sample piece (A1500) in the container ① and file about 5 scratches on the aluminum sample piece with a file under the condition of immersion in the sample fuel. (To remove the oxide film on the surface of the aluminum sample piece.)

(3) Replace the atmosphere gas in the pole mill pot with nitrogen and quickly close the lid.

® Place the pole mill pot in a constant temperature dryer set at 100 ° C and 120 ° C, respectively.

⑤ After 24 hours, remove the ball mill pot and let it cool in the draft.

(4) The weight loss of the aluminum sample was measured, and if there was any partial weight loss due to partial discoloration or pitting, even if the weight loss was less than 0, it was indicated as 1. Storage stability test>

After mixing the fuel, leave it at room temperature for 1 hour, put it in a freezer (at 11 ° C), leave it for 1 day, take it out, observe the state of the fuel liquid, and check if the fuel is compatible. 0, cloudy or fuel separated were evaluated as 0.

First, the basic composition of E-10, which is Formulation Example 1, is composed of 90% by weight of naphtha and 10% by weight of ethanol. The alcohol is only ethanol, and the ratio is the smallest. Even if the ratio of ano-core is low as shown in E-10, heating at 100 ° C and 120 ° C for 24 hours, as shown in Fig. 4, results in aluminum by dry colloid. It can be seen that there is a weight loss due to corrosion. When water is added up to 4% to this E-10, aluminum at 120 ° C It is clear that weight loss due to nickel corrosion has been eliminated and the corrosion resistance has been improved.However, those without the addition of water have a problem in storage stability at minus 1 o ° c, which is naturally low temperature. On the other hand, when water was added up to 0.4% by weight, at which the weight loss due to aluminum corrosion did not occur, in the preservability test at minus 10 ° C, layer separation occurred, and It was found that when 5% by weight of water was added, layer separation occurred even at room temperature, and although addition of water had the effect of water on aluminum corrosion caused by dry colloid, storage stability was reduced by the addition of water. You can see that.

On the other hand, the result when methanol was added instead of the water is shown in FIG. 4 by the formulation name “E-10-Me”. When this methanol was added, the corrosion resistance of aluminum was found to be improved by the addition of 0.4% by weight, which is almost the same as that of water, and the corrosion resistance of aluminum was excellent even at 100 ° C. It can be seen that the low-temperature stability was improved and the low-temperature stability was improved without causing layer separation as compared with the case where 0.4% by weight of water was added. Further, the addition of 0.5% by weight of methanol gives good results even in the corrosion resistance of aluminum at 120 ° C, and does not cause layer separation even at room temperature or low temperature. It can be seen that the addition of these methanols can improve the performance, and that these methanols can be used well as aluminum corrosion inhibitors.

The results obtained when propylene glycol was added as dalicols in place of the water are shown in the formulation name “E-10-PG” in FIG. When this propylene glycol was added, it was found that the corrosion resistance of aluminum was improved by adding 0.4% by weight, which was almost the same as that of water, and aluminum was excellent even at 100 ° C. It can be seen that the corrosion resistance was improved and the low-temperature stability was improved without causing layer separation as compared with the case where 0.4% by weight of water was added. In addition, the addition of 0.5% by weight of propylene glycol provided good results in the corrosion resistance of aluminum at 120 ° C, and did not cause phase separation even at room temperature or low temperature. It is also found that the low-temperature preservability can be improved by the addition of methanol, and that these propylene dalicols can be used well as an aluminum corrosion inhibitor. The results when getyl ketone was added as a ketone instead of the water and the result when getyl ketone was added together with water are shown in the formulation name “E-10-DEK” in FIG. When this getyl ketone was added alone without water, good corrosion resistance of aluminum at 100 ° C. was obtained with the addition of 3.5% by weight, and with the addition of 4.5% by weight. In addition to obtaining good corrosion resistance of aluminum at 120 ° C., good results were obtained in both the room temperature stability and the low temperature stability in both of the above formulations, and these getyl ketones were used as aluminum corrosion inhibitors. It turns out that it can be used well.

In addition, from the result of adding both getyl ketone and water shown in Γ Γ-10 -DE KJ in Fig. 4, good aluminum corrosion prevention ability was obtained even if the amount of water added was reduced, Since the addition amount of these waters can be reduced, it can be seen that the room temperature of the obtained fuel and the storage stability at low temperature are improved, and when the same addition amount as in the case of adding the water alone is added. It was also found that the low-temperature stability of the obtained liquid fuel was improved by further adding getyl ketone, and that these dimethyl ketones have the effect of reducing the amount of water added and the effect of improving the low-temperature stability. I understand.

In addition, the results of the case where ethyl formate as an ester is added alone instead of the water and the result of the case where it is added together with water are shown in the formulation name “E-10-GE” in FIG. When this ethyl formate was added alone without water, good corrosion resistance of aluminum at 100 ° C. was obtained with the addition of 3.0% by weight, and with addition of 4.0% by weight, Good corrosion resistance of aluminum at 120 ° C and good results at both room temperature stability and low temperature stability were obtained in both of the above formulations. It can be seen that it can be used well as an agent.

In addition, from the results of adding both ethyl formate and water shown in “E-10-GE” in Fig. 4, good aluminum corrosion prevention ability was obtained even if the amount of water added was reduced. In addition, since the amount of water added can be reduced, it can be seen that the obtained fuel has improved storage stability at room temperature and low temperature. In that case, by further adding ethyl formate, It can be seen that the low-temperature stability of the obtained liquid fuel is improved, and that these ethyl formates have the effect of reducing the amount of water added and the effect of improving the low-temperature stability.

In addition, the results obtained when propionaldehyde was added alone as the aldehydes instead of the water and the results obtained when water was added together with water are shown in the formulation name “E-101-PA” in FIG. . When this propion aldehyde is added alone without water, the weight is 1.5 weight. /. In addition to the above, good corrosion resistance of aluminum at 100 ° C. was obtained, and addition of 2.0% by weight provided good corrosion resistance of aluminum at 120 ° C. In both formulations, good results were obtained for both room temperature stability and low temperature stability, indicating that these propion aldehydes can be used well as aluminum corrosion inhibitors.

In addition, from the results of the case where both propionaldehyde and water shown in “E-10-PA” in Fig. 4 are used, it is possible to obtain good aluminum corrosion prevention ability even if the amount of water added is reduced. Since the addition amount of these waters can be reduced, not only the room temperature and the storage stability at low temperature of the obtained fuel are improved, but also the case where the same addition amount as in the case of adding the water alone is added. In addition, it was found that the addition of propionaldehyde further improved the low-temperature stability of the resulting liquid fuel, and that these propionaldehydes could reduce the amount of water added and improve the low-temperature stability. It turns out that there is a fruit.

As for E-10, which is a basic compound containing ether in E-10, the above-mentioned methanol, propylene glycol, getylketone, ethyl formate, and propionaldehyde are used similarly to E-10. Fig. 19 shows the results of tests on the corrosion resistance and storage stability of aluminum when added. From the results shown in FIG. 19, it can be seen that even when ether was added, the effect obtained in the case of E-10 was similarly obtained. It can be seen that methanol, propylene glycol, getyl ketone, ethyl formate, and propionaldehyde can be used effectively.

Then, the basic composition of a E- 2 0 in Formulation Example 2, naphtha 8 0 wt ^_0/0 and ethanol 2 0 wt%, the ethanol is an alcohol than E- 1 0 of the Formulation Example 1 Increased formulation. In this E—20, as the alcohol ratio rises, As shown in FIG. 5, the weight loss at 100 ° C. and 120 ° C. is larger than that of the aluminum corrosion in the case of E-10, and the increase in the alcohol tends to cause dry corrodion. It can be seen that the weight loss due to aluminum corrosion tends to increase.

When water was added to this E-20 up to 0.9%, the weight loss due to aluminum corrosion at 120 ° C was eliminated, indicating that the corrosion resistance was improved. Is naturally low in the storage at minus 1 o ° c, whereas the one with water added up to 0.9% is subjected to phase separation in the low-temperature storage test at minus 10 ° C. It can be seen that when 1.1 wt% water is added, layer separation occurs even at room temperature. The reason why the amount of added water is larger than that of E-10 is that more water is required to suppress the occurrence of dry colloids due to the increased ratio of alcohol. it is conceivable that.

On the other hand, the result when methanol was added instead of the water is shown in FIG. 5 by the formulation name “E_20-Me”. When this methanol was added, it was found that the corrosion resistance of aluminum was improved with the addition of 0.5% by weight, and good corrosion resistance of aluminum was obtained even at 120 ° C and stable at low temperatures. It is also found that the properties are good, and that these methanol can be used well as an aluminum corrosion inhibitor.

The results when ethylene glycol was added instead of water as the glycols are shown in the formulation name “E-20-EG” in FIG. When this ethylene glycol was added, the corrosion resistance of aluminum was found to be improved by the addition of 0.5% by weight, as in the case of methanol, and the corrosion resistance of aluminum was good even at 120 ° C. It can be seen that the low-temperature stability is good and that ethylene dalicol can be used well as an aluminum corrosion inhibitor.

The results when acetone was added instead of the water as a ketone and the results when acetone was added together with water are shown in the formulation name “E_20-Ac” in FIG. When this acetone was added alone without water, it was added to 3.0% by weight. And 100. Good corrosion resistance of aluminum at C is obtained. With addition of 4.0% by weight, good corrosion resistance of aluminum at 120 ° C is obtained. Good results were obtained for both stability and low-temperature stability, indicating that these acetones can be used well as aluminum corrosion inhibitors.

In addition, from the result of adding both acetone and water shown in “E—20—Ac” in Fig. 5, it can be seen that even if the amount of added water is reduced, good aluminum-corrosion prevention ability is obtained. As well as being able to reduce the amount of added water, it can be seen that the resulting fuel has improved storage stability at room temperature and at low temperatures. When the amount of addition was added, it was found that the addition of acetone further improved the low-temperature stability of the resulting liquid fuel, and that these acetones reduced the amount of water added and the low-temperature stability. It can be seen that there is an improvement effect.

Further, the results when methyl formate was added alone as the ester instead of the water and the result when added together with water are shown in the formulation name “E-20-GM” in FIG. When this methyl formate was added alone without water, good corrosion resistance of aluminum at 100 ° C. was obtained with the addition of 6.0% by weight, and with the addition of 8.0% by weight, Good corrosion resistance of aluminum at 120 ° C and good results in both room-temperature stability and low-temperature stability in both of the above formulations. It can be seen that it can be used well as an agent.

In addition, from the results of adding both methyl formate and water shown in “E-20-GM” in Fig. 5, good aluminum corrosion prevention ability was obtained even when the amount of water added was reduced. In addition, since the amount of water added can be reduced, it can be seen that the obtained fuel has improved storage stability at room temperature and low temperature. In this case, it was found that the low-temperature stability of the obtained liquid fuel was improved by further adding methyl formate, and these methyl formates were effective in reducing the amount of water added and improving the low-temperature stability. It turns out that there is.

The results obtained when butyl aldehyde was added alone as the aldehyde in place of the water and when added together with water are shown in FIG. A ". When this butyraldehyde was added alone without water, good corrosion resistance of aluminum at 100 ° C. was obtained at the addition of 2.0% by weight, and at 2.5% by weight, Good corrosion resistance of aluminum at 120 ° C. and good results in both room-temperature stability and low-temperature stability were obtained in both of the above formulations. These butyl aldehydes were used as aluminum corrosion inhibitors. It turns out that it can be used favorably.

In addition, from the results of adding both butyl aldehyde and water shown in “E-20-BA” in Fig. 5, it is possible to obtain good aluminum corrosion prevention ability even if the amount of added water is reduced. However, since the addition amount of these waters can be reduced, it can be seen that the storage stability of the obtained fuel at room temperature and low temperature is improved, and when the same addition amount as in the case of adding the water alone is added. It can be seen that the addition of butyl aldehyde further improves the low-temperature stability of the resulting liquid fuel, and that these butyl aldehydes have the effect of reducing the amount of water added and the effect of improving the low-temperature stability. I understand.

In addition, with respect to "E-20-E", which is a basic composition containing ether in E-20, the above-mentioned methanol, ethylene glycol, acetone, methyl formate and butyl aldehyde were added in the same manner as in E-20. Figure 20 shows the results of tests conducted on the corrosion and storage stability of aluminum. From the results shown in FIG. 20, it can be seen that the effect obtained in the case of E-20 was similarly obtained even when ether was added, and even when these ethers were blended, It can be seen that ethylene glycol, acetone, methyl formate, and butyl aldehyde can be used effectively.

Next, the basic composition of E-50, which is Formulation Example 3, is 50 weight of naphtha. / ₀ and 50% by weight of ethanol, in which the amount of ethanol, which is an alcohol, was further increased as compared with E-20 of Formulation Example 2. As shown in FIG. 6, the weight loss at 100 ° C. and 120 ° C. of E−50 was higher than that of aluminum in the case of E−20 due to the increase in the alcohol ratio. It can be seen that the increased caloric content of these alcohols makes it easier to generate dry corrodions, and the weight loss due to aluminum corrosion tends to increase. When water is added up to 3.4% of this E-50, as shown in Fig. 6, there is no weight loss due to aluminum corrosion at 120 ° C, and the corrosion resistance is improved. It can be seen that those without the addition of water have no problem in storage stability at -10 ° C, which is a low temperature, whereas those with the water added up to 3.4% have In the low-temperature storage test, it was found that layer separation occurs and that addition of 3.6% by weight of water causes layer separation even at room temperature. The reason why the amount of added water is larger than that of E-20 is that more water is required to suppress the occurrence of dry corrosion due to the increased ratio of alcohol. Conceivable.

On the other hand, the result when methanol was added instead of the water is shown in the formulation name “E-50-Me” in FIG. When this methanol was added, the corrosion resistance of aluminum was improved at 100 ° C compared to the addition of 0.8% by weight, and at 120 ° C with the addition of 1.0% by weight. It can be seen that the stability is also good, and that these methanol can be used well as an aluminum corrosion inhibitor.

In addition, the results obtained when ethylene dalicol was added in place of the water as dalicols are shown in the formulation name “E_50-EG” in FIG. When this ethylene glycol was added, it was found that the corrosion resistance of aluminum at 100 ° C was improved at the addition of 0.7% by weight, which was almost the same as the above-mentioned methanol, and the addition of 1.0% by weight was further confirmed. In addition, it was found that the corrosion resistance of aluminum at 120 ° C was improved, and that the low-temperature stability was also good, indicating that these ethylene glycols can be used well as an aluminum corrosion inhibitor. I understand.

The results obtained when methyl ethyl ketone was added in place of the water as the ketones, and the results obtained when water was added together with water are shown in the formulation name “E-50-MEKJ” in FIG. When ethyl ketone was added alone without water, good corrosion resistance of aluminum at 100 ° C was obtained at the addition of 4.0% by weight, and good corrosion resistance at 120 ° C at the addition of 6.0% by weight. The corrosion resistance of aluminum is obtained, and both room temperature stability and low temperature stability Good results were obtained, indicating that these methyl ethyl ketones can be used well as an aluminum corrosion inhibitor.

In addition, from the result of adding both methyl ethyl ketone and water shown in “E-50-ME KJ” in Fig. 6, it can be seen that even if the amount of added water is reduced, good aluminum corrosion prevention ability is obtained. As well as being able to reduce the amount of addition of water, it can be seen that the room temperature and low temperature storage stability of the obtained fuel are improved. When added, it was found that the addition of these methyl ethyl ketones improved the low-temperature stability of the resulting liquid fuel, and that these methyl ethyl ketones had the effect of reducing the amount of water added and the low-temperature stability. It can be seen that there is an effect of improving

In addition, the results of the case where ethyl formate as an ester is added alone instead of the water and the result of the case where it is added together with water are shown in the formulation name “E-50_GE” of FIG. When this ethyl formate is added alone without water, the weight is 6.0 weight. With the addition of / ₀ , good corrosion resistance of aluminum at 100 ° C was obtained, and with the addition of 10.0 wt%, good corrosion resistance of aluminum at 120 ° C was obtained. Good results were obtained in both the room temperature stability and the low temperature stability in both of the above-mentioned formulations, and it can be seen that these ethyl formate can be used well as an aluminum corrosion inhibitor.

In addition, from the results of adding both ethyl formate and water shown in “E-50-GE” in Fig. 6, good aluminum corrosion prevention ability was obtained even when the amount of water added was reduced. In addition to the fact that the addition amount of water can be reduced, it can be seen that the obtained fuel has improved storage stability at room temperature and low temperature, and the same addition amount as in the case of adding the water alone is added. In this case, it is understood that the low-temperature stability of the obtained liquid fuel is improved by further adding ethyl formate, and these ethyl formates have the effect of reducing the amount of water added and the effect of improving low-temperature stability. It turns out that there is.

In addition, the results obtained when the aldehydes and acetoaldehyde were added alone instead of the water and the results obtained when the aldehydes were added together with water are shown in the formulation name “E-50-AA” in FIG. I have. When this acetoaldehyde was added alone without water, good corrosion resistance of aluminum at 100 ° C was obtained at the addition of 3.0% by weight. With the addition of 4.0% by weight, good corrosion resistance of aluminum at 120 ° C can be obtained, and in both of the above-mentioned formulations, good results can be obtained in both room temperature stability and low temperature stability. It has been found that these acetoaldehydes can be used well as an aluminum corrosion inhibitor.

In addition, from the results of adding both acetoaldehyde and water shown in “E_50_AA” in Fig. 6, it is possible to obtain good aluminum corrosion prevention ability even if the amount of water added is reduced. Since the addition amount of these waters can be reduced, it can be seen that the obtained fuel has improved storage stability at room temperature and low temperature, and when the same addition amount as in the case of adding the water alone is added. In addition, it was found that the addition of acetoaldehyde further improved the low-temperature stability of the obtained liquid fuel, and that these acetoaldehydes have the effect of reducing the amount of water added and the effect of improving low-temperature stability. It turns out.

As for E_50-E, which is a basic composition containing ether in E-50, the above methanol, ethylene glycol, methylethylketone, ethylformate, and acetoaldehyde were used in the same manner as E_50. Fig. 21 shows the results of tests on the corrosion and storage stability of aluminum when added. From the results shown in FIG. 21, it can be seen that the effect obtained in the case of E-50 was similarly obtained even when ether was added, and even when the ether was added, It can be seen that ethylene glycol, methyl ethyl ketone, ethyl formate and acetoaldehyde can be used effectively.

, Then the basic composition of a IN- 4 0 in Formulation Example 4, naphtha 6 0 wt%, a isopropoxy port pills alcohol 2 0 weight ^_0/0, n-butanol 2 0 weight ^_0/0, the type of alcohol It is a combination of two types: isopropyl alcohol and n-butanol, which have more carbon atoms than ethanol. As shown in FIG. 7, it can be seen that the weight loss due to aluminum corrosion due to dry corrosion was similar to that of E-50, as shown in FIG.

When water is added up to 3.6% by weight to IN-40, the weight loss due to aluminum corrosion at 120 ° C is not lost, indicating that the corrosion resistance is improved. The one without water is stored at minus 10 ° C, which is naturally low temperature. When water is added up to 3.6% by weight where the weight loss due to aluminum corrosion does not occur, the layer separation in the storage stability test at -10 ° C is not affected. It was found that the addition of 3.8% by weight of water causes layer separation even at room temperature, and although the addition of water has the effect of water on the corrosion of aluminum by dry corrodion, the storage stability is reduced by the addition of water. It turns out that it does.

On the other hand, the result obtained when methanol was added instead of the water is shown in FIG. 7 under the compound name “IN-40-Me”. When this methanol is added, good corrosion resistance of aluminum can be obtained even at 100 ° C., and good low-temperature stability can be obtained at 0.8 ° C. In addition, with the addition of 1.7% by weight, good results were obtained in the corrosion resistance of aluminum at 120 ° C, and no layer separation occurred at room temperature or at low temperature, and the room temperature and low temperature were maintained. It can be seen that the solubility can be improved by the addition of these methanols, and that these methanols can be used well as aluminum corrosion inhibitors.

In addition, from the results of addition of both methanol and water shown in "IN-40-Me" in Fig. 7, good aluminum corrosion prevention ability was obtained even when the amount of water added was reduced. Since the addition amount of these waters can be reduced, not only the room temperature of the obtained fuel and the storage stability at low temperature are improved, but also the case where the same addition amount as in the case where the water alone is added is added. In addition, it was found that the low-temperature stability of the obtained liquid fuel was improved by further adding these methanols, and these methanols showed the effect of reducing the amount of water added and the effect of improving the low-temperature stability. It turns out that there is. In addition, the results obtained when ethylene dalicol was added in place of the water as the dalicols are shown in the formulation name “IN — 40-EG” in FIG. When this ethylene glycol was added, it was found that the corrosion resistance of aluminum was improved when 1.5% by weight was added, and good corrosion resistance of aluminum was obtained even at 100 ° C. In addition, the low-temperature stability shows good results. In addition, with the addition of 3.0% by weight, good results were obtained in the corrosion resistance of aluminum at 120 ° C, and no phase separation occurred even at room temperature and low temperature. In addition, the storage stability at low temperatures can be improved by the addition of these ethylene dalicols. It can be seen that glycol can be used favorably as an aluminum corrosion inhibitor.

In addition, from the results of adding both ethylene dalicol and water shown in ΓIN-40-EGJ in Fig. 7, good aluminum corrosion prevention ability can be obtained even if the amount of added water is reduced. In addition, since the amount of added water can be reduced, it is understood that the obtained fuel has improved storage stability at room temperature and low temperature, and that these ethylene dalicols have the effect of reducing the amount of added water. I understand.

In addition, the results when acetone was added instead of the water as a ketone and the results when acetone was added together with water are shown in the formulation name “IN-40-Ac” in FIG. The acetone when added alone in water without the 0.2 wt ^_0/0 Oite the addition of, 1 0 0 ° C and 1 2 0 corrosion resistance good aluminum in ° C is obtained, et al At the same time, good results were obtained for both room temperature stability and low temperature stability, indicating that these acetones can be used well as aluminum corrosion inhibitors.

In addition, from the results of addition of both acetone and water shown in “IN-40-Ac” in Fig. 7, good aluminum corrosion prevention ability was obtained even when the amount of water added was reduced. Since the amount of water added can be reduced, it can be seen that the obtained fuel has improved storage stability at room temperature and low temperature, and the same amount of addition as in the case of adding the water alone was added. In this case, it was found that the addition of these acetone further improved the low-temperature stability of the obtained liquid fuel, indicating that these acetone fuels had the effect of reducing the amount of added water and the effect of improving the low-temperature stability. I understand.

In addition, the results of adding methyl formate alone as the esters instead of the water and the results of adding methyl formate together with water are shown in the formulation name “IN — 40-GM” in FIG. When this methyl formate was added alone without water, good corrosion resistance of aluminum at 100 ° C was obtained at the addition of 1.5% by weight, and 3.0% by weight was added. In this case, good corrosion resistance of aluminum at 120 ° C was obtained, and good results were obtained in both room temperature stability and low temperature stability in both of the above formulations. It turns out that it can be used well as an inhibitor. In addition, from the results of adding both methyl formate and water shown in “IN_40_GM” in Fig. 7, it is possible to obtain good aluminum corrosion prevention ability even if the amount of added water is reduced. Since the amount of addition of water can be reduced, it can be seen that the obtained fuel has improved storage stability at room temperature and low temperature. In addition, it was found that the low-temperature stability of the obtained liquid fuel was improved by further adding methyl formate, and that these methyl formates have the effect of reducing the amount of water added and the effect of improving low-temperature stability. I understand.

In addition, the results of the case where butyl aldehyde was added alone as an aldehyde in place of the water, and the result of the case where butyl aldehyde was added together with water are shown in the formulation name “IN-40-BA” in FIG. When this butyl aldehyde was added alone without water, good corrosion resistance of aluminum at 100 ° C. was obtained at 0.3% by weight, and 0.5% by weight was added. In addition, good corrosion resistance of aluminum at 120 ° C. was obtained, and good results were obtained in both room temperature stability and low temperature stability in both of the above formulations. It turns out that it can be used favorably as a food inhibitor.

In addition, from the results of addition of both butyraldehyde and water shown in “IN- 40 _BA” in FIG. 7, good aluminum corrosion prevention performance can be obtained even if the amount of added water is reduced. At the same time, since the amount of addition of water can be reduced, it is understood that the obtained fuel has improved storage stability at room temperature and low temperature, and that these acetoaldehydes have an effect of reducing the amount of water added. .

In addition, with respect to "IN-40-E", which is a basic compound containing ether in IN-40, methanol, ethylenedalicol, acetone, methyl formate, and butyraldehyde were added in the same manner as IN-40. Figure 22 shows the results of tests conducted on the corrosion and storage stability of aluminum. From the results shown in FIG. 22, even when ether was added, the effects obtained in the case of IN_40 were almost the same, except for the low-temperature stability of ethylene glycol and butyraldehyde. It can be seen that the above-mentioned methanol, ethylene glycol, acetone, methyl formate, and butyl aldehyde can be effectively used even in the case where these ethers are blended. Then, the basic composition of IN-1 5 is a Formulation Example 5, naphtha 85 wt%, isopropoxy port pills alcohol 10 wt%, n-butanol 5 weight ^_0/0, the ratio of alcohol than the "IN- 40" Is also less.

When water is added up to 0.6% by weight to IN-15, as shown in Fig. 8, the weight loss due to aluminum corrosion at 120 ° C is eliminated, and the corrosion resistance is improved. It can be seen that the one without water added has no problem in the preservability at -10 ° C, which is a low temperature, but the water is added up to 0.6% by weight, at which the weight loss due to aluminum corrosion does not occur. In this case, in the above-mentioned preservation test at -10 ° C, it was found that layer separation occurred and addition of 0.8% by weight of water caused layer separation even at room temperature. Although water is effective for aluminum corrosion, it can be seen that storage stability is reduced by the addition of the water.

On the other hand, the result when methanol was added instead of the water is shown in FIG. 8 by the formulation name “IN_15-Me”. When this methanol is added, good corrosion resistance of aluminum can be obtained even at 100 ° C with addition of 0.5% by weight, and good results are also obtained at low temperature stability. In addition, the addition of 1.5% by weight gives good results even in the corrosion resistance of aluminum at 120 ° C, does not cause layer separation even at room temperature and low temperature, and exhibits good room temperature and low temperature storage stability. It can be seen that the improvement can be achieved by the addition of methanol, and that these methanols can be used favorably as aluminum corrosion inhibitors.

Also, from the results of addition of both methanol and water shown in ΓIN- 15 -Me J in Fig. 8, good aluminum corrosion prevention ability was obtained even when the amount of water added was reduced. Since the amount of addition of water can be reduced, it can be seen that the room temperature of the obtained fuel and the storage stability at low temperature are improved, and the same amount of addition as in the case of adding the water alone was added. In this case, it was found that the low-temperature stability of the obtained liquid fuel was improved by further adding these methanols, and these methanols were effective in reducing the amount of water added and improving the low-temperature stability. It turns out that there is. In addition, the result of adding propylene dalicol as the dalicols in place of the water is shown in the formulation name “IN-15_PG” in FIG. This propylene When Dalicol was added, it was found that the corrosion resistance of aluminum was improved when 2.0% by weight was added, and good corrosion resistance of aluminum was obtained even at 100 ° C and low temperature. Stability also shows good results. In addition, with the addition of 4.0% by weight, good results were obtained in the corrosion resistance of aluminum at 120 ° C, and no layer separation occurred even at room temperature or low temperature, and the storage stability at room temperature and low temperature was maintained. It can be seen that the propylene dalicol can be improved by adding these propylene dalicols, and that these propylene dalicols can be used well as an aluminum corrosion inhibitor.

In addition, from the result of adding both propylene glycol and water shown in “IN-15_PG” in Fig. 8, good aluminum corrosion prevention ability was obtained even when the amount of water added was reduced. Since the amount of added water can be reduced, it is understood that the obtained fuel has improved storage stability at room temperature and low temperature, and that these propylene blends have an effect of reducing the amount of added water. .

In addition, the results obtained when methyl isobutyl ketone was added as a ketone instead of the water and the result obtained when water was added together with water are shown in FIG. 8 under the compound name “IN-15-MBK:”. When this methyl isobutyl ketone was added alone without water, good corrosion resistance of aluminum at 100 ° C. was obtained at 0.3% by weight and 0.5 weight. With the addition of / ₀ , good corrosion resistance of aluminum at 120 ° C was obtained, and both formulations showed good results in both room temperature stability and low temperature stability. It turns out that it can be used well as a corrosion inhibitor.

Also, from the results of addition of both methyl isobutyl ketone and water shown in ΓIN-15-MB KJ in Fig. 8, good aluminum corrosion prevention ability was obtained even if the amount of water added was reduced. In addition, since the addition amount of water can be reduced, it can be seen that the obtained fuel has improved storage stability at room temperature and low temperature, and the same addition amount as in the case of adding the water alone is used. When added, it was found that by further adding these methyl isobutyl ketones, the low-temperature stability of the obtained liquid fuel was improved, and these methyl isobutyl ketones had the effect of reducing the amount of added water and the low temperature. It can be seen that there is an effect of improving stability. In addition, the results of the case where ethyl formate as an ester is added alone instead of the water and the result of the case where it is added together with water are shown in the formulation name “IN-15-GEJ” in FIG. When water alone was added without water, good corrosion resistance of aluminum at 100 ° C. was obtained at the addition of 1.0% by weight, and 12% at the addition of 5.0% by weight. Good corrosion resistance of aluminum at 0 ° C is obtained, and good results are obtained in both room-temperature stability and low-temperature stability in both of the above formulations, and these ethyl formates are good as aluminum corrosion inhibitors. It can be seen that it can be used for

In addition, from the results of addition of both ethyl formate and water shown in “IN-15-GEJ in Fig. 8, good aluminum corrosion prevention ability can be obtained even if the amount of water added is reduced. At the same time, since the addition amount of these waters can be reduced, it can be seen that the room temperature of the obtained fuel and the storage stability at low temperature are improved, and the same addition amount as in the case of adding the water alone was added. In this case, it is understood that the low-temperature stability of the obtained liquid fuel is improved by further adding ethyl formate, and these ethyl formates have an effect of reducing the amount of water added and an effect of improving low-temperature stability. You can see that.

In addition, the results obtained when propionaldehyde was added alone as the aldehydes instead of the water and the results obtained when water was added together with water are shown in the compound name “IN-15-PA” in FIG. When this propion aldehyde was added alone without water, good corrosion resistance of aluminum at 100 ° C was obtained with addition of 0.2% by weight, and 0.4% by weight was obtained. In addition, good corrosion resistance of the aluminum at 120 ° C. was obtained, and good results were obtained in both the room-temperature stability and the low-temperature stability in both of the above formulations. It can be seen that can be suitably used as an aluminum corrosion inhibitor.

In addition, from the results of adding both propionaldehyde and water shown in “IN-15-PA” in Fig. 8, good aluminum corrosion prevention ability can be obtained even if the amount of water added is reduced. In addition, since the amount of added water can be reduced, it is understood that the obtained fuel has improved storage stability at room temperature and low temperature, and that these propionaldehydes have the effect of reducing the amount of added water. I understand.

In addition, the basic compound containing ether in IN-15 is called “IN-15-E” As for IN-15, the results of tests on the corrosiveness and storage stability of aluminum were conducted by adding methanol, propion glycol, methyl isobutyl ketone, ethyl formate and propion aldehyde in the same manner as in IN-15. . From the results shown in FIG. 23, it can be understood that the effect obtained in the case of IN-15 was similarly obtained even when ether was added, and even when the ether was added, It can be seen that propion glycol, methyl isobutyl ketone, ethyl formate and propion aldehyde can be used effectively.

Then, the basic composition of a IN- 7 5 in Formulation Example 6, naphtha 2 5 wt%, an isoprene port pills alcohol 3 5 weight ^_0/0, n-butanol 4 0 wt%, wherein the ratio of the alcoholic "IN More than “-40”. As shown in FIG. 9, it can be seen that the weight loss due to aluminum corrosion due to dry corrosion was similar to that of IN-15 as shown in FIG.

When water is added to this IN-75, if water is added up to 0.5% by weight, good corrosion resistance of aluminum can be obtained at 100 ° C. When water is added up to 0.8% by weight, good corrosion resistance of aluminum can be obtained at 120 ° C. On the other hand, the results obtained when methanol was added instead of the water are shown in FIG. 9 by the formulation name “IN 75-Me”. When this methanol is added, good corrosion resistance of aluminum can be obtained even at 100 ° C. with addition of 1.0% by weight, and good results at low temperature stability are shown. In addition, the addition of 2.0% by weight gives good results in the corrosion resistance of aluminum at 120 ° C, does not cause layer separation even at room temperature and low temperature, and maintains at room temperature and low temperature. It can be seen that the solubility can be improved by the addition of these methanols, and that these methanols can be used well as aluminum corrosion inhibitors.

In addition, from the results of the addition of both methanol and water shown in ΓIN-75-MeJ in Fig. 9, good mixing of methanol and water resulted in good aluminum corrosion with a smaller amount of methanol. It can be seen that, at the same time as the ability to prevent the deterioration, good storage stability at room temperature and low temperature can be obtained, and that these waters have the effect of reducing the amount of methanol added.

When ethylene dalicol is added instead of the water as dalicols Are shown in Figure 9 under the formulation name “IN-75-EG”. When this ethylene glycol was added, it was found that the corrosion resistance of aluminum was improved at the addition of 3.0% by weight, and good corrosion resistance of aluminum was obtained even at 100 ° C. , Low temperature stability also shows good results. In addition, with the addition of 6.0% by weight, good results were obtained even with the corrosion resistance of aluminum at 120 ° C, and no layer separation occurred at room temperature or at low temperature. The addition of these ethylene dali coals can improve their properties, so that they can be used well as aluminum corrosion inhibitors.

In addition, from the results of addition of both ethylene glycol and water shown in “IN-75-EG” in Fig. 9, it was found that mixing ethylene glycol and water resulted in good ethylene dalicol with a smaller amount of ethylene dalicol. It can be seen that good room-temperature and low-temperature storage stability can be obtained in addition to the ability to prevent corrosion of aluminum, and that these waters have the effect of reducing the amount of ethylene glycol added.

In addition, the results when methyl n-propyl ketone was added as a ketone instead of the water and the result when water was added together with water are shown in the formulation name “IN-75-MPK:” in FIG. When this methyl n-propyl ketone is added alone without water, good corrosion resistance of aluminum at 100 ° C. and 120 ° C. can be obtained by adding 0.2% by weight. Good results were obtained for both the room temperature stability and the low temperature stability for both formulations, indicating that these methyl n-propyl ketones can be used well as aluminum corrosion inhibitors.

In addition, from the results of adding both methyl n-propyl ketone and water shown in “IN-75-MPK” in Fig. 9, less methyl n-propyl ketone was obtained by mixing methyl n-propyl ketone and water. It can be seen that a good amount of aluminum can provide good corrosion protection and that good room temperature and low temperature storage stability can be obtained, and that these waters have the effect of reducing the amount of methyl n-propyl ketone added. In addition, the results of the case where ethyl formate as an ester is added alone instead of the water and the result of the case where it is added together with water are shown in the formulation name “IN-75_GE” in FIG. When this ethyl formate was added alone without water, 2.0% by weight With the addition, good corrosion resistance of aluminum at 100 ° C was obtained. With the addition of 3.5% by weight, good corrosion resistance of aluminum at 120 ° C was obtained. In this case, good results were obtained in both the stability at normal temperature and the stability at low temperature, indicating that these ethyl formate can be used well as an aluminum-film corrosion inhibitor.

In addition, from the results of addition of both ethyl formate and water shown in "IN-75-GE" in Fig. 9, it was found that by mixing ethyl formate and water, good It can be seen that the ability to prevent corrosion of aluminum can be obtained, and that good storage stability at room temperature and low temperature can be obtained, and that these waters have the effect of reducing the amount of ethyl formate added.

In addition, the results obtained when acetoaldehyde was added alone instead of the water as aldehydes, and the results obtained when acetoaldehyde was added together with water are shown in the formulation name “IN-75_AA” in FIG. When this acetoaldehyde was added alone without water, good corrosion resistance of aluminum at 100 ° C. was obtained at 0.3% by weight, and 0.6% by weight was added. In addition, good corrosion resistance of aluminum at 120 ° C. was obtained, and good results were obtained in both room temperature stability and low temperature stability in both of the above formulations. It turns out that it can be used favorably as a food inhibitor.

In addition, from the result of adding both acetoaldehyde and water shown in “IN-75-AA” in Fig. 9, it is possible to reduce the amount of acetoaldehyde by mixing acetoaldehyde and water. It can be seen that a good aluminum corrosion inhibiting ability can be obtained, and that good room temperature and low temperature storage stability can be obtained, and that these waters have the effect of reducing the amount of acetoaldehyde added.

In addition, for IN-75-E, which is a basic compound containing ether in IN-75, methanol, ethylene glycol, methyl n-propyl ketone, ethyl formate, and acetoaldehyde were added in the same manner as IN_75. Figure 24 shows the results of tests conducted on the corrosion and storage stability of aluminum. From the results shown in FIG. 24, it was found that the effect obtained in the case of IN-75 was similarly obtained even when ether was added. It can be seen that the above methanol, ethylene glycol, methyl n-propyl ketone, ethyl formate and acetoaldehyde can be used effectively.

Then, at some EIB- 4 0 basic composition of Formulation Example 7, naphtha 6 0 wt%, ethanol 2 0 weight ^_0/0, a 2 0% by weight of isobutyl alcohol, and the case of the formulation of the IN- 4 0 The alcohol used is different. As shown in FIG. 10, it can be seen that the EIB-40 also has a weight loss due to aluminum corrosion due to dry corrosion similar to that of the E-50 and IN-40.

When water is added up to 4.8% by weight with respect to EIB-40, the weight loss due to aluminum corrosion at 120 ° C is not lost, indicating that the corrosion resistance is improved. However, the case where no water is added naturally has no problem in the storage at a low temperature of -1 ° C, while the weight loss due to the aluminum corrosion does not occur.

When water is added up to 4.8% by weight, layer separation occurs in the above-mentioned storage stability test at minus 10 ° C, and when 5.1% by weight water is added, layer separation may occur even at room temperature. As can be seen, although water is effective for aluminum corrosion by dry collodion by the addition of water, storage stability is lowered by the addition of the water.

On the other hand, the result when methanol was added instead of the water is shown in FIG. 10 under the combination name “EIB—40—Me”. When this methanol is added, good corrosion resistance of aluminum is obtained even at 100 ° C. when 1.5% by weight is added, and good results are also obtained at low temperature stability. In addition, with the addition of 2.0% by weight, good results were obtained in the corrosion resistance of aluminum at 120 ° C, and no layer separation occurred at room temperature or low temperature. It can be seen that the preservability can be improved by the addition of these methanols, and that these methanols can be used well as aluminum corrosion inhibitors.

In addition, from the result of adding both methanol and water shown in “EIB-40-Me” in Fig. 10, it can be seen that even if the amount of added water is reduced, good aluminum corrosion prevention ability is obtained. And the amount of water added can be reduced, which indicates that the resulting fuel has improved storage stability at room temperature and low temperature, and that methanol has the effect of reducing the amount of water added. I understand. The results obtained when ethylene dalicol was added as the dalicols in place of the water are shown in FIG. 10 under the formulation name “EIB-40-EG”. When this ethylene dalicol was added, it was found that the corrosion resistance of aluminum was improved at the addition of 1.0% by weight, and good corrosion resistance of aluminum was obtained even at 100 ° C. , Low temperature stability also shows good results. In addition, with the addition of 2.0% by weight, good results are obtained in the corrosion resistance of aluminum at 120 ° C, and no layer separation occurs even at room temperature and low temperature, and the storage stability at room temperature and low temperature is maintained. It can be seen that the improvement can be achieved by the addition of ethylenedalicol, and that these ethylenedalicols can be favorably used as an aluminum corrosion inhibitor.

In addition, from the results of adding both ethylene glycol and water shown in “EIB-40-EG” in Fig. 10, good aluminum corrosion prevention ability was obtained even when the amount of water added was reduced. And the amount of water added can be reduced, indicating that the resulting fuel has improved storage stability at room temperature and low temperature, and these ethylene glycols have the effect of reducing the amount of water added. It turns out that it has.

In addition, the results when acetone was added as the ketone instead of the water and the results when acetone was added together with water are shown in the formulation name “EIB-40-Ac” in FIG. When this acetone was added alone without water, it was found that the corrosion resistance of aluminum was improved with the addition of 0.2% by weight, and that aluminum was excellent even at 100 ° C. In addition to obtaining corrosion resistance, good results were also obtained at low-temperature stability. In addition, the addition of 3.0% by weight gives good results in the corrosion resistance of aluminum at 120 ° C, and does not cause layer separation even at room temperature or low temperature. Good results were obtained in terms of stability, indicating that these acetones can be used well as aluminum corrosion inhibitors.

In addition, from the result of adding both acetone and water shown in "EIB-40-Ac" in Fig. 10, good aluminum corrosion prevention ability can be obtained even if the amount of added water is reduced, Since the addition amount of these waters can be reduced, not only the room temperature of the obtained fuel and the storage stability at low temperature are improved, but also the water alone can be used. It can be seen that, when the same addition amount as in the case of the addition was added, the low-temperature stability of the obtained liquid fuel was improved by further adding these acetones. It can be seen that there is an effect of reducing the temperature and an effect of improving the low-temperature stability. In addition, the results when methyl formate was added alone as the ester instead of the water and the result when added together with water are shown in the formulation name “EIB-40-GM” in FIG. When this methyl formate was added alone without water, good corrosion resistance of aluminum at 100 ° C. was obtained with the addition of 2.5% by weight, and the addition of 5.0% by weight was effective. In addition, good corrosion resistance of aluminum at 120 ° C was obtained, and good results were obtained in both the room-temperature stability and the low-temperature stability in both of the above formulations. It can be seen that it can be used well as an agent.

In addition, from the result of adding both methyl formate and water shown in “EIB-40-GM” in Fig. 10, good aluminum corrosion prevention ability can be obtained even if the amount of added water is reduced. At the same time, since the addition amount of these waters can be reduced, it can be seen that the room temperature of the obtained fuel and the storage stability at low temperature are improved, and the same addition amount as in the case of adding the water alone was added In this case, it was found that the low-temperature stability of the obtained liquid fuel was improved by further adding methyl formate, and these methyl formate reduced the amount of added water and improved the low-temperature stability. It turns out that there is. In addition, the results of adding butyl aldehyde as an aldehyde alone instead of the water and the results of adding butyl aldehyde together with water are shown in FIG. 10 under the compound name “EIB-40-BA”. When this butyl aldehyde was added alone without water, good corrosion resistance of aluminum at 100 ° C. was obtained at the addition of 0.6% by weight, and the addition of 1.0% by weight was effective. In addition, good corrosion resistance of aluminum at 120 ° C. was obtained, and good results were obtained in both the room temperature stability and the low temperature stability in both of the above formulations. It can be seen that it can be used favorably as a corrosion inhibitor.

In addition, from the results of adding both butyl aldehyde and water shown in “EIB-40-BA” in Fig. 10, good aluminum corrosion prevention ability can be obtained even if the amount of water added is reduced. At the same time, the amount of water to be added can be reduced. It can be seen that the storage stability of the fuel at room temperature and low temperature has been improved, and the fuel can be obtained by further adding butyl aldehyde when the same amount of water is added. It can be seen that the low-temperature stability of the liquid fuel is improved, and that these butyl aldehydes have the effect of reducing the amount of water added and the effect of improving the low-temperature stability.

In addition, regarding EIB-40-E, which is a basic formulation containing ether in EIB-40, methanol, ethylene glycol, acetone, methyl formate, and butyraldehyde were added in the same manner as in EIB-40. Figure 25 shows the results of tests conducted on the corrosion and storage stability of aluminum. From the results shown in FIG. 25, it can be seen that the effect obtained in the case of EIB-40 was similarly obtained even when ether was added, and even when these ethers were blended, It can be seen that methanol, ethylene glycol, acetone, methyl formate, and butyl aldehyde can be used effectively.

It is then Formulation Example 8 EIB - 1 base composition of 5, naphtha 8 5 wt%, ethanol 5 wt ^_0/0, a isobutyl alcohol 1 0 wt%, in the case of Blend of the IN- 1 5 However, different alcohols are used. As can be seen from FIG. 11, the EIB-15 also has a weight loss due to aluminum corrosion due to the dry corrosion similar to that of the E-10 and IN-15.

0.6 weight of water for this EIB-15. When the water is added, the weight loss due to aluminum corrosion at 120 ° C is eliminated, and it can be seen that the corrosion resistance is improved. There is no problem in storage at 1 o ° c, but there is no weight loss due to the aluminum corrosion

When water was added up to 0.6% by weight, in the above-mentioned storage test at minus 10 ° C, layer separation occurred and 0.8% by weight. / ₀ In the water addition, understand that occurs layer separation at room temperature, although the addition of water to the aluminum corrosion by dry Corot Ji presence of water is effective, that the storage stability by water addition is reduced I understand.

On the other hand, the result when methanol was added instead of the water is shown in FIG. 11 under the combination name “EIB-15-Me”. When this methanol is added It can be seen that the addition of 1.0% by weight shows that the corrosion resistance of aluminum is improved, and that good corrosion resistance of aluminum can be obtained at 100 ° C and that the low-temperature stability is also good. Is shown. In addition, the addition of 1.5% by weight gives good results even in the corrosion resistance of aluminum at 120 ° C, and does not cause layer separation even at room temperature or low temperature. It can be seen that the addition of these methanols can improve the properties, and that these methanols can be used well as aluminum corrosion inhibitors.

In addition, from the result of adding both methanol and water shown in “EIB-15-Me” in Fig. 11, good corrosion prevention ability of aluminum can be obtained even if the amount of added water is reduced. Since the addition amount of these waters can be reduced, it can be seen that the obtained fuel has improved storage stability at room temperature and low temperature, and it can be seen that these methanols have the effect of reducing the addition amount of water. It can be seen that when the same amount of addition as that of the simple substance of water was added, the addition of these methanols further improved the low-temperature stability of the obtained liquid fuel. It can be seen that there is an effect of reducing the amount of addition and an effect of improving low temperature stability.

In addition, the result of adding propylene dalicol as the dalicols in place of the water is shown in the compound name “EI B — 15—PG” in FIG. When the addition of the propylene render recall 1. In addition of 5 weight ^_0/0, it can be seen that the corrosion resistance of aluminum is improved, 1 00 corrosion resistant ° C even better aluminum obtained In addition, the low-temperature stability shows good results. In addition, with the addition of 3.0% by weight, good results can be obtained even at the corrosion resistance of aluminum at 120 ° C, and no layer separation occurs at room temperature or low temperature. It can be seen that the storage stability can be improved by the addition of these ethylene glycols, and that these propylene dalicols can be used well as aluminum corrosion inhibitors.

In addition, from the results of adding both propylene glycol and water shown in “EIB-15_PG” in Fig. 11, good aluminum corrosion prevention ability was obtained even if the amount of water added was reduced, Since the amount of addition of water can be reduced, it is understood that the obtained fuel has improved storage stability at room temperature and low temperature. It can be seen that lopyrene recall has the effect of reducing the amount of water added.

In addition, the results when getyl ketone was added as a ketone instead of the water and the result when getyl ketone was added together with water are shown in the formulation name “EI B — 15_DEK” in FIG. When this getyl ketone was added alone without water, it was found that the corrosion resistance of aluminum was improved at the addition of 1.0% by weight, and the corrosion resistance of aluminum was good even at 100 ° C. , And good results at low temperature stability. Also 1.5 weight. With the addition of / ₀ , good results can be obtained even with the corrosion resistance of aluminum at 120 ° C, and no layer separation occurs at room temperature and low temperature, and both room temperature stability and low temperature stability are good. These results show that these getyl ketones can be used well as an aluminum corrosion inhibitor.

In addition, from the results of adding both getyl ketone and water shown in “EIB-15_DEK” in Fig. 11, good aluminum corrosion prevention ability was obtained even if the amount of added water was reduced. Since the addition amount of these waters can be reduced, it can be seen that the room temperature of the obtained fuel and the storage stability at low temperatures are improved, and when the same addition amount as in the case of adding the water alone is added. It was found that the low-temperature stability of the obtained liquid fuel was improved by further adding these getyl ketones, and that these getyl ketones had the effect of reducing the amount of water added and the effect of improving the low-temperature stability. I understand.

In addition, the results when methyl acetate was added alone as the ester instead of the water and the result when it was added together with water are shown in the compound name “EI B — 15—SMJ” in FIG. 11. when methyl added alone with water without the 2. in addition of 0 by weight ^_0/0, 1 00 corrosion resistance of good aluminum in ° C is obtained, the addition of 3.0 wt%, 1 In addition to obtaining good corrosion resistance of aluminum at 20 ° C, good results were obtained in both room temperature stability and low temperature stability in both of the above formulations, and these methyl acetates were successfully used as aluminum corrosion inhibitors. It turns out that it can be used.

In addition, from the result of adding both methyl acetate and water shown in “EIB-15-SM” in Fig. 11, it can be seen that even if the amount of added water is reduced, good aluminum corrosion prevention ability is obtained. And the amount of addition of water can be reduced, so that it can be seen that the obtained fuel has improved storage stability at room temperature and low temperature, and the same amount of addition as in the case where the water alone is added. It was found that the addition of methyl acetate improved the low-temperature stability of the resulting liquid fuel when these were added, and these methyl acetates were effective in reducing the amount of water added and low-temperature stability. It can be seen that there is an effect of improving In addition, the results when propionaldehyde was added alone as the aldehyde in place of the water and when added together with water are shown in the formulation name “EIB_15_PA” in FIG. When this propion aldehyde was added alone without water, good corrosion resistance of aluminum at 100 ° C was obtained at the addition of 0.6% by weight, and 1.0% by weight was added. In addition, good corrosion resistance of aluminum at 120 ° C was obtained, and good results were obtained in both room temperature stability and low-temperature stability in both of the above formulations, and these acetoaldehydes were used to prevent aluminum corrosion. It turns out that it can be used favorably as an agent.

In addition, from the results of adding both propionaldehyde and water shown in “EIB-15-PA” in Fig. 11, good aluminum corrosion prevention ability was obtained even when the amount of water added was reduced. And the amount of water added can be reduced, indicating that the resulting fuel has improved storage stability at room temperature and low temperature, and these propionaldehydes have the effect of reducing the amount of water added. It turns out that it has.

As for EIB-15, which is a basic formulation containing ether in EIB-15, methanol, propylene glycol, getyl ketone, methyl acetate, and propionaldehyde are added in the same manner as EIB-15. Figure 26 shows the results of tests conducted on the corrosion and storage stability of aluminum. From the results shown in FIG. 26, it can be seen that the effect obtained in the case of EIB-15 was similarly obtained even when ether was added. It can be seen that propylene glycol, getyl ketone, methyl acetate, and propionaldehyde can be used effectively.

Then, the basic composition of the EI B_ 75 is a Formulation Example 9, naphtha 25 wt%, ethanol 35 weight ^_0/0, a 40 wt% isobutyl alcohol, and against the EIB- 40, it increased the proportion of alcohol It is a combination. Even with this EIB-75, As shown, it can be seen that there is a weight loss due to aluminum corrosion due to dry corrosion similar to EI B-40.

When water is added to EIB-75, good corrosion resistance of aluminum can be obtained at 100 ° C by adding water up to 0.6% by weight. When water is added up to 1.2% by weight, good corrosion resistance of aluminum is obtained at 120 ° C. On the other hand, the result when methanol was added instead of the water is shown in FIG. 12 with the combination name “EIB-75-Me”. When this methanol was added, it was found that the corrosion resistance of aluminum was improved when 1.5% by weight was added, and good corrosion resistance of aluminum was obtained even at 100 ° C, and the low-temperature stability was also improved. It shows good results. In addition, the addition of 2.0% by weight gives good results even in the corrosion resistance of aluminum at 120 ° C, and does not cause layer separation even at room temperature or low temperature. It can be seen that the addition of these methanols can improve the performance, and that these methanols can be used well as an aluminum corrosion inhibitor.

In addition, from the results of addition of both methanol and water shown in ΓΕIB-75-MeJ in Fig. 12, it was found that by mixing methanol and water, good aluminum was obtained with a smaller amount of methanol. It can be seen that the anti-corrosion ability is obtained and that good storage stability at room temperature and at low temperature is obtained, and that these waters have the effect of reducing the amount of methanol added.

In addition, the results obtained when ethylene dalicol was added as the dalicols instead of the water are shown in the formulation name “EI B — 75-EG” in FIG. When this ethylene dalicol was added, it was found that the addition of 3.0% by weight improved the aluminum's corrosion resistance. Even at 100 ° C, good aluminum corrosion resistance was obtained, and low-temperature stability was obtained. Also shows good results. In addition, with the addition of 5.0% by weight, good results were obtained in the corrosion resistance of aluminum at 120 ° C, and no layer separation occurred at room temperature or at low temperature. It can be seen that the improvement can be achieved by the addition of recall, and that these ethylene recalls can be used well as an aluminum corrosion inhibitor. In addition, from the result of adding both ethylene glycol and water shown in “EIB-75-EG” in Fig. 12, it is possible to mix with ethylene glycol and water to achieve a smaller amount of ethylene glycol. It can be seen that not only a good aluminum corrosion inhibiting ability can be obtained, but also good room temperature and low temperature storage stability can be obtained, and that these waters have the effect of reducing the amount of ethylene glycol added.

The results of adding methylethyl ketone as ketones instead of the water and the results of adding methylethyl ketone together with water are shown in the formulation name “EI B_75—MEK:” in FIG. I have. When this methyl ethyl ketone was added alone without water, good corrosion resistance of aluminum at 100 ° C. was obtained at the addition of 3.0% by weight, and 5.0% by weight. In addition, good corrosion resistance of aluminum at 120 ° C was obtained, and good results were also obtained in both formulations at room temperature stability and low temperature stability. It can be seen that it can be used well as an aluminum corrosion inhibitor.

In addition, from the result of adding both methylethyl ketone and water shown in IBIB-75-MEKJ in Fig. 12, by mixing methylethyl ketone and water, less methylethyl ketone can be obtained. It can be seen that not only good aluminum corrosion prevention ability can be obtained at the same amount, but also good room temperature and low temperature storage stability can be obtained, and that these waters have the effect of reducing the amount of methyl ethyl ketone added. .

In addition, the results when methyl formate was added alone as the ester instead of the water and the result when added together with water are shown in the formulation name “EIB-75-GM” in FIG. When this methyl formate was added alone without water, good corrosion resistance of aluminum at 100 ° C. was obtained with the addition of 4.0% by weight, and 1% with the addition of 8.0% by weight. In addition to obtaining good aluminum corrosion resistance at 20 ° C, good results were obtained in both room temperature stability and low temperature stability in both of the above formulations, and these methyl formates were successfully used as aluminum corrosion inhibitors. It turns out that it can be used.

In addition, from the result of adding both methyl formate and water shown in “EIB-75_GM” in Fig. 12, by mixing methyl formate and water, it is possible to obtain a good aluminum content with a smaller amount of methyl formate. Corrosion prevention ability is obtained and good room temperature This shows that low-temperature storage stability can be obtained, and that these waters have the effect of reducing the amount of methyl formate added.

In addition, the results when acetoaldehyde was added alone as an aldehyde in place of the water and when added together with water are shown in the formulation name “EI B_75-AA” in FIG. 12. I have. When this acetoaldehyde was added alone without water, good corrosion resistance of aluminum at 100 ° C was obtained at 0.8% by weight, and 1.0% by weight / ₀ %. In addition, good corrosion resistance of aluminum at 120 ° C. was obtained, and good results were obtained for both the room-temperature stability and the low-temperature stability in both of the above formulations. It turns out that it can be used favorably as an aluminum corrosion inhibitor.

Also, from the results of adding both acetoaldehyde and water shown in “EIB-75_AA” in Fig. 12, by mixing acetoaldehyde and water, it is possible to obtain good aluminum with less acetoaldehyde amount. It can be seen that not only corrosion prevention ability is obtained, but also good room temperature and low temperature storage stability is obtained, and that these waters have an effect of reducing the amount of acetoaldehyde added.

Regarding “EIB-75-E”, which is a basic composition containing ether in EIB-75, similarly to EIB-75, methanol, ethylene glycol, methylethylketone, methyl formate and acetoaldehyde were added to form aluminum. Figure 27 shows the results of tests for corrosion and storage stability. From the results shown in FIG. 27, it can be seen that the effect obtained in the case of EIB-75 was similarly obtained even when ether was added. It can be seen that ethylene glycol, methyl ethyl ketone, methyl formate, and acetoaldehyde can be used effectively.

Then, the basic composition of a PNB-30 in Formulation Example 1 0, naphtha 70 wt%, isopropyl alcohol 1 0 wt ^_0/0, n Putanoru 1 0 wt ^_0/0, 1 0 wt% isobutyl alcohol Yes, the number of alcohol types is increased to 3 types. When water is added up to 1.8% by weight to this PNB-30, as shown in Fig. 13, the weight loss due to aluminum corrosion at 120 ° C is eliminated, and the corrosion resistance is improved. It can be seen that the one without water added Eggplant has no problem in storage at 1 o ° C, but when water is added up to 1.8% by weight, which does not cause weight loss due to aluminum corrosion, the storage test at minus 10 ° C It was found that, in addition to the water separation, the addition of water at 2.0% by weight caused the layer separation even at room temperature, and although water was effective in the aluminum corrosion by dry corrosion by the addition of water, It can be seen that the storage stability is reduced.

On the other hand, the result when methanol was added instead of the water is shown in FIG. 13 with the compound name “PNB-30-Me”. When this methanol was added, good corrosion resistance of aluminum was obtained even at 100 ° C with addition of 1.0% by weight, and good results were also obtained at low temperature stability. With the addition of 1.5% by weight, good results were obtained even with the corrosion resistance of aluminum at 120 ° C, and no layer separation occurred at room temperature or at low temperature, and the storage stability at room temperature and at low temperature was improved. It can be seen that it can be improved by the addition of methanol, and that these methanols can be used favorably as an aluminum corrosion inhibitor.

In addition, from the results of addition of both methanol and water shown in “PNB_30-Me” in FIG. 13, good aluminum corrosion prevention ability was obtained even when the amount of added water was reduced, Since the addition amount can be reduced, it can be seen that the storage stability of the obtained fuel at room temperature and low temperature is improved, and when the same addition amount as in the case of adding the water alone is added, It can be seen that the addition of methanol further improves the low-temperature stability of the resulting liquid fuel, and that these methanols have the effect of reducing the amount of water added and the effect of improving the low-temperature stability.

In addition, the result of the case where ethylene dalicol was added in place of the water as dalicols is shown in FIG. 13 under the compound name “PNB-30-EG”. When this ethylene glycol was added, it was found that the corrosion resistance of aluminum was improved at the addition of 2.0% by weight, and good corrosion resistance of aluminum was obtained even at 10 ° C and stable at low temperatures. The results also show good results. With the addition of 2.5% by weight, good results were obtained in the corrosion resistance of aluminum at 120 ° C, and no layer separation occurred at room temperature or low temperature. It can be seen that the low-temperature storability can be improved by the addition of these ethylene dalicols, and that these ethylene dalicols can be used well as aluminum corrosion inhibitors.

In addition, from the result of adding both ethylene glycol and water shown in “PNB-30-EG” in Fig. 13, good corrosion prevention ability of aluminum can be obtained even if the amount of added water is reduced. In addition, since the amount of addition of water can be reduced, it is understood that the storage stability of the obtained fuel at room temperature and low temperature has been improved, and these ethylene blends have the effect of reducing the amount of water added. You can see that.

Also, the results when acetone was added instead of the water as a ketone and the results when acetone was added together with water are shown in the formulation name “PNB-30_Ac” in FIG. When this acetone is added alone without water, good corrosion resistance of aluminum at 100 ° C and 120 ° C can be obtained when 0.2% by weight is added. Good results were obtained with low-temperature stability, indicating that these acetones can be used well as aluminum corrosion inhibitors.

In addition, the results of adding both acetone and water shown in “PNB-30_Ac” in Fig. 13 show that even if the amount of water added is reduced, good aluminum corrosion prevention ability is obtained, Can be reduced, it can be seen that the room temperature of the obtained fuel and the storage stability at low temperatures are improved, and when the same addition amount as in the case of adding the water alone is added, It can be seen that the addition of these acetones improves the low-temperature stability of the resulting liquid fuel, and that these acetones have the effect of reducing the amount of water added and improving the low-temperature stability. I understand. In addition, the results of the case where methyl formate was added alone as the esters instead of the water and the result of the case where methyl formate was added together with water are shown in the formulation name “PNB_30_GM” in FIG. When this methyl formate was added alone without water, good corrosion resistance of aluminum at 10 ° C was obtained with the addition of 1.5% by weight, and 120% with addition of 2.5% by weight. In addition to obtaining good corrosion resistance of aluminum at ° C, good results were obtained in both room temperature stability and low temperature stability in both of the above blends, and these methyl formates were successfully used as aluminum corrosion inhibitors. It turns out that it can be used.

In addition, the results of adding both methyl formate and water shown in “PNB-30-GM” in Fig. 13 show that even if the added amount of water is reduced, good aluminum corrosion prevention ability can be obtained. Since the addition amount of these waters can be reduced, not only the room temperature and the storage stability at low temperature of the obtained fuel are improved, but also the case where the same addition amount as in the case of adding the water alone is added. In addition, it was found that the low-temperature stability of the obtained liquid fuel was improved by further adding methyl formate, and these methyl formates were effective in reducing the amount of water added and improving the low-temperature stability. It turns out that there is. In addition, the results when butyl aldehyde was added alone as the aldehyde in place of the water and when butyl aldehyde was added together with water are shown in the formulation name “PNB-30-BA” in FIG. I have. When this butyraldehyde was added alone without water, good corrosion resistance of aluminum at 100 ° C. was obtained with the addition of 0.4% by weight, and with the addition of 0.5% by weight, In addition to obtaining good corrosion resistance of aluminum at ° C, good results were obtained in both room temperature stability and low temperature stability in both of the above formulations, and these butyl aldehydes were used as aluminum corrosion inhibitors. It turns out that it can be used favorably.

In addition, the results of the addition of both butyl aldehyde and water shown in “PNB-30-BA” in Fig. 13 show that even if the amount of added water is reduced, good aluminum corrosion prevention ability can be obtained. However, since the amount of addition of water can be reduced, it can be seen that the storage stability of the obtained fuel at room temperature and low temperature is improved, and that these butyl aldehydes have the effect of reducing the amount of water added. I understand.

As for PNB-30-E, which is a basic blend containing ether in PNB-30, the above-mentioned methanol, ethylene glycol, acetone, methyl formate and butyraldehyde were added in the same manner as in PNB-30 to corrode aluminum. Figure 28 shows the results of tests conducted on the stability and storage stability. From the results shown in FIG. 28, it can be seen that the effect obtained in the case of PNB-30 was similarly obtained when ether was added, and even when the ether was added, It can be seen that ethylene glycol, acetone, methyl formate, and butyl aldehyde can be used effectively. Then, the basic composition of a PNB-1 5 in Formulation Example 1 1, naphtha 85 wt%, I isopropyl alcohol 5 wt ^_0/0, n Putanoru 5 weight ^_0/0, a isobutyl alcohol 5% by weight, of alcohol There are three types, but the ratio is low.

When water was added up to 0.5% by weight to this PNB-15, as shown in Fig. 14, the weight loss due to aluminum corrosion at 120 ° C was eliminated, indicating that the corrosion resistance was improved. As can be seen, the case where no water is added has no problem in the preservability at minus 10 ° C which is a low temperature, whereas the water loss does not occur due to the aluminum corrosion up to 0.5% by weight. In addition, in the above-mentioned preservation test at minus 10 ° C, when water was added, layer separation occurred, and when 0.7% by weight of hydrogen was added, layer separation occurred even at room temperature. Although water is effective for aluminum corrosion by the joint, it is found that storage stability is reduced by the addition of the water.

On the other hand, the result when methanol is added instead of the water is shown in the combination name “PNB-15_Me” in FIG. When this methanol was added, it was found that the corrosion resistance of aluminum was improved when 0.8% by weight was added, and good corrosion resistance of aluminum was obtained even at 100 ° C, and the low-temperature stability was also improved. It shows good results. In addition, the addition of 1.5% by weight provides good results even in the corrosion resistance of aluminum at 120 ° C, does not cause layer separation even at room temperature or low temperature, and exhibits good room temperature and low temperature storage stability. It can be seen that the improvement can be achieved by the addition of methanol, and that these methanols can be used well as an aluminum corrosion inhibitor.

In addition, from the results of addition of both methanol and water shown in "PNB-15-Me" in Fig. 14, good aluminum corrosion prevention ability was obtained even when the amount of water added was reduced. Since the amount of water added can be reduced, it can be seen that the obtained fuel has improved storage stability at room temperature and low temperature. In addition, it was found that the addition of these methanols further improved the low-temperature stability of the resulting liquid fuel, indicating that these methanols had the effect of reducing the amount of water added and the effect of improving the low-temperature stability. I understand.

The results obtained when propylene glycol was added in place of the water as dalicols are shown in FIG. 14 under the compound name “PNB-15-PG”. When propylene glycol was added, it was found that the addition of 3.0% by weight improved the aluminum's corrosion resistance. Even at 100 ° C, good aluminum corrosion resistance was obtained. , Low temperature stability also shows good results. In addition, with the addition of 4.0% by weight, good results can be obtained even at the corrosion resistance of aluminum at 120 ° C, and no layer separation occurs even at room temperature or low temperature. It can be seen that the low-temperature preservability can be improved by the addition of these propylene dalicols, and that these propylene dalicols can be used favorably as an aluminum corrosion inhibitor.

In addition, from the result of adding both propylene glycol and water shown in “PNB-15-PGJ” in FIG. 14, good aluminum corrosion prevention ability was obtained even if the amount of water added was reduced, Since the amount of added water can be reduced, it is understood that the obtained fuel has improved storage stability at room temperature and low temperature, and that these propylene glycols have the effect of reducing the amount of added water. I understand.

In addition, the results obtained when methyl n-propyl ketone was added instead of the water as the ketones, and the results obtained when water was added together with water, are shown in the formulation name “PNB-150-MPK:” in FIG. . When this methyl n-propyl ketone is added alone without water, good corrosion resistance of aluminum at 100 ° C. is obtained with addition of 0.3% by weight, and 0.5% by weight. %, Good corrosion resistance of aluminum at 120 ° C was obtained, and both formulations showed good results in both room temperature stability and low temperature stability. It turns out that it can be used favorably as an inhibitor.

In addition, from the result of adding both methyl n-propyl ketone and water shown in “PNB-15-MPK:” in Fig. 14, it can be seen that even if the amount of added water is reduced, good aluminum corrosion prevention ability is obtained. And the amount of addition of water can be reduced, so it can be seen that the room temperature of the obtained fuel and the storage stability at low temperature are improved. When added, these methyl It can be seen that the low-temperature stability of the obtained liquid fuel is improved by further adding n-propyl ketone, and these methyl n-propyl ketones have the effect of reducing the amount of water added and the effect of improving the low-temperature stability. You can see that.

In addition, the results when methyl acetate as an ester is added alone instead of the water and the result when water is added together with water are shown in the formulation name “PNB_15-SMJ” in FIG. When added alone without water, good aluminum corrosion resistance at 100 ° C was obtained with 1.5% by weight addition, and at 120 ° C with 6.0% by weight addition. In addition to obtaining good corrosion resistance of aluminum, good results were obtained in both room temperature stability and low temperature stability in both of the above-mentioned formulations, and these methyl acetates can be used well as aluminum corrosion inhibitors. You can see what you can do.

In addition, the results of addition of both methyl acetate and water shown in “PNB-15-SM” in Fig. 14 show that even if the amount of added water is reduced, good aluminum corrosion prevention ability can be obtained. However, since the addition amount of these waters can be reduced, it can be seen that the storage stability of the obtained fuel at room temperature and low temperature is improved, and when the same addition amount as in the case of adding the water alone is added. In addition, it was found that the addition of methyl acetate further improved the low-temperature stability of the obtained liquid fuel, and these methyl acetates showed an effect of reducing the amount of water added and an effect of improving the low-temperature stability. It turns out that there is. Further, the results when acetoaldehyde was added alone as aldehydes instead of the water and when it was added together with water are shown in the formulation name “PNB-15-AA” in FIG. When this acetoaldehyde was added alone without water, good corrosion resistance of aluminum at 100 ° C. was obtained at the addition of 0.3% by weight, and at the addition of 0.5% by weight, 1 In addition to obtaining good corrosion resistance of aluminum at 20 ° C, good results were obtained in both room temperature stability and low temperature stability in both of the above blends, and these acetoaldehydes were made of aluminum. It turns out that it can be used favorably as a corrosion inhibitor.

In addition, from the results of addition of both acetoaldehyde and water shown in “PNB_15_AA” in Fig. 14, good aluminum corrosion prevention ability can be obtained even when the amount of water added is reduced, Can be obtained because the amount of It can be seen that the storage stability of the fuel at room temperature and low temperature has been improved, and that these acetoaldehydes have the effect of reducing the amount of water added.

As for PNB-15, which is a basic composition containing ether in PNB-15, the same as PNB_15, methanol, propylene glycol, methyl n-propyl ketone, methyl acetate and acetoaldehyde were added to aluminum. Fig. 29 shows the results of tests conducted on the corrosiveness and storage stability of the steel. From the results shown in FIG. 29, it can be seen that the effect obtained in the case of PNB-15 was similarly obtained even when ether was added, and even when the ether was added, It can be seen that propylene glycol, methyl n-propyl ketone, methyl acetate and acetoaldehyde can be used effectively.

Then, the basic composition of a PNB-75 in Formulation Example 1 2, naphtha 25 wt%, isopropyl alcohol 25 wt ^_0/0, n-butanol 25 weight ^_0/0, a isobutyl alcohol 25% by weight, alcohol There are three types and a high alcohol ratio.

When water was added to this PNB-75 up to 10.0% by weight, the weight loss due to aluminum corrosion at 120 ° C was eliminated as shown in Fig. 15, indicating that the corrosion resistance was improved. However, in the case where water is not added, there is no problem in storage stability at minus 10 ° C, which is a low temperature. On the other hand, when water is added up to 10.0% by weight, the weight loss due to the aluminum corrosion does not occur. In addition, it was found that in the above-mentioned storage test at -10 ° C, phase separation occurred, and when 10.5% by weight of water was added, layer separation occurred even at room temperature, and water was added to the aluminum corrosion by dry corrosion due to the addition of water. Although effective, it can be seen that the addition of the water lowers the storage stability.

On the other hand, the result when methanol was added instead of the water is shown in FIG. 15 with the combination name “PNB-75-Me”. When this methanol was added, good corrosion resistance of aluminum was obtained even at 10 ° C at 1.0 wt% addition, and good results were also obtained at low temperature stability. With the addition of 2.0% by weight, good results were obtained even with the corrosion resistance of aluminum at 120 ° C, and no layer separation occurred at room temperature or low temperature. It can be seen that the preservability can be improved by the addition of these methanols, and that these methanols can be used well as aluminum corrosion inhibitors.

In addition, the results of adding both methanol and water shown in “PNB-75_Me” in Fig. 15 show that even if the amount of added water is reduced, good aluminum corrosion prevention ability is obtained, Since the amount of addition can be reduced, it can be seen that the obtained fuel has improved storage stability at room temperature and low temperature, and when the same amount of addition as that when the water alone is added, these methanols are added. It can be seen that the addition of further increases the low-temperature stability of the resulting liquid fuel, and that these methanols have the effect of reducing the amount of water added and the effect of improving the low-temperature stability.

In addition, the results obtained when ethylene dalicol was added in place of the water as dalicols are shown in FIG. 15 under the formulation name {-75-EG}. When this ethylene dalicol was added, it was found that the corrosion resistance of aluminum was improved by adding 4.0% by weight, and good corrosion resistance of aluminum was obtained even at 100 ° C, and low-temperature stability was obtained. Also shows good results. In addition, with the addition of 6.0% by weight, good results were obtained in the corrosion resistance of aluminum at 120 ° C, and no layer separation occurred at room temperature or low temperature. It can be seen that it can be improved by the addition of dalicol, and that these ethylenic alcohols can be used well as an aluminum corrosion inhibitor.

In addition, from the result of adding both ethylene glycol and water shown in “PNB-75-EG” in Fig. 15, good corrosion prevention ability of aluminum was obtained even if the amount of added water was reduced. In addition, the amount of water added can be reduced, indicating that the resulting fuel has improved storage stability at room temperature and at low temperatures. It turns out that it has.

In addition, the results obtained when methyl ethyl ketone was added as a ketone instead of the water and the results obtained when water was added together with water are shown in the compound name “PNB-75-MEK” in FIG. . If this methyl ethyl ketone is added alone without water, it will give good aluminum corrosion resistance at 100 ° C with addition of 0.3% by weight. In addition to good corrosion resistance, good corrosion resistance of aluminum at 120 ° C can be obtained when 0.5 wt% is added, and good results in both room-temperature stability and low-temperature stability in both formulations. It can be seen that these methyl ethyl ketones can be used well as an aluminum corrosion inhibitor.

In addition, from the results of adding both methyl ethyl ketone and water shown in “1 Ρ Β 7—75—MEK:” in Fig. 15, good aluminum corrosion can be obtained even if the amount of added water is reduced. Since the ability to prevent water is obtained and the amount of water to be added can be reduced, it can be seen that the obtained fuel has improved storage stability at room temperature and low temperature. It can be seen that the addition of these methyl ethyl ketones improves the low-temperature stability of the resulting liquid fuel when these amounts are added. These methyl ethyl ketones have the effect of reducing the amount of water added. It also shows that there is an effect of improving low-temperature stability.

In addition, the results of the case where ethyl formate as an ester is added alone instead of the water and the result of the case where it is added together with water are shown in the compound name “PNB — 75—GE” in FIG. The formic acid Echiru when added alone in water without the 4. In addition the 0 by weight ^_0/0, corrosion resistance good aluminum in 1 0 o ° c is obtained 6. 0 wt% In addition to the above, good corrosion resistance of aluminum at 120 ° C. was obtained, and good results were obtained in both the room-temperature stability and the low-temperature stability in both of the above formulations. It can be seen that it can be used well as a corrosion inhibitor.

In addition, the results of adding both ethyl formate and water shown in “PNB-75-GE” in Fig. 15 show that even if the amount of added water is reduced, good aluminum corrosion prevention ability is obtained. Can be obtained and the amount of addition of water can be reduced, so that not only the room temperature and the storage stability at low temperature of the obtained fuel are improved, but also the amount of addition similar to the case where the water alone is added It was found that the addition of ethyl formate improved the low-temperature stability of the obtained liquid fuel, and these ethyl formates were effective in reducing the amount of added water and low-temperature stability. It can be seen that there is an effect of improving In addition, the results when propion aldehyde was added alone as the aldehydes instead of the water and when added together with water are shown in FIG. One 75—PA ”. When propionaldehyde was added alone without water, good corrosion resistance of aluminum at 100 ° C was obtained at 0.3% by weight, and 120 ° C at 0.5% by weight. In addition to obtaining good corrosion resistance of aluminum at room temperature, good results were obtained in both room temperature stability and low temperature stability in both of the above formulations, and these propionaldehydes are favorably used as aluminum corrosion inhibitors. You can see that it can be done.

In addition, from the result of adding both propionaldehyde and water shown in "PNB-75-PAj" in Fig. 15, good corrosion prevention ability of aluminum was obtained even if the amount of added water was reduced. Since the amount of added water can be reduced, it is understood that the obtained fuel has improved storage stability at room temperature and low temperature, and that these pion aldehydes have the effect of reducing the amount of added water. I understand.

In addition, for PNB-75-EJ, which is a basic formulation containing ether in PNB-75, similarly to PNB-75, the above methanol, ethylene glycol, methylethylketone, ethyl formate, and propionaldehyde were added to corrode aluminum. The results of tests on the stability and storage stability are shown in Fig. 30. From the results shown in Fig. 30, the effect obtained in the case of PNB-75 was similarly obtained when ether was added. It can be seen that even when these ethers are combined, the above-mentioned methanol, ethylene glycol, methyl ethyl ketone, ethyl formate, and propion aldehyde can be effectively used.

Then, the basic composition of the EI PP- 30 is a Formulation Example 13, naphtha 70 wt%, ethanol 10 weight ^_0/0, isopropyl alcohol 10 wt ^_0/0, 1 one pentanol 10% by weight, the type of alcohol This is a combination different from that of PNB-30.

When water was added to this EI PP-30 up to 2.5% by weight, as shown in Fig. 16, the weight loss due to aluminum corrosion at 120 ° C was eliminated, indicating that the corrosion resistance was improved. As can be seen, the one without water added has no problem in storage stability at minus 1 ° C, which is naturally low temperature, but the weight loss due to the aluminum corrosion does not occur up to 2.5% by weight. When water is added, in the above-mentioned storage test at minus 10 ° C, layer separation occurs, and 3.0% by weight of hydrogenation is added. In addition, it was found that layer separation occurs even at room temperature, and that water addition is effective for aluminum corrosion due to dry corrosion by the addition of water, but storage stability is reduced by the addition of water.

On the other hand, the result when methanol was added instead of the water is shown in the combination name “EIPP_30-Me” in FIG. When this methanol was added, good corrosion resistance of aluminum was obtained even at 100 ° C with addition of 1.5% by weight, and good results were also obtained at low temperature stability. In addition, the addition of 2.5% by weight gives good results even in the corrosion resistance of aluminum at 120 ° C, does not cause layer separation even at room temperature or low temperature, and exhibits room temperature and low temperature storage stability. It can be seen that the improvement can be achieved by the addition of, and that these methanol can be used favorably as an aluminum corrosion inhibitor.

In addition, from the results of adding both methanol and water shown in “EI PP-30-Me” in Fig. 16, it was found that even if the added amount of water was reduced, good aluminum corrosion prevention ability was obtained. Since the addition amount of these waters can be reduced, it can be seen that the obtained fuel has improved storage stability at room temperature and low temperature, and it is understood that the fuel has the effect of reducing the addition amount of methanol-water.

In addition, the results obtained when ethylene dalicol was added as the dalicols in place of the water are shown in the formulation “EIP-30-EG” in FIG. When this ethylene glycol is added, the weight is 2.0. /. It can be seen that the corrosion resistance of aluminum was improved by the addition of aluminum, and good corrosion resistance of aluminum was obtained even at 1 ° C and the low-temperature stability was good. In addition, the addition of 5.0% by weight gives good results even in the corrosion resistance of aluminum at 120 ° C, does not cause layer separation even at room temperature and low temperature, and indicates the storage stability at room temperature and low temperature. It can be seen that the improvement can be achieved by the addition of recall, and that these ethylene recalls can be used well as an aluminum corrosion inhibitor.

In addition, from the result of adding both ethylene glycol and water shown in “EI PP-30-EG” in Fig. 16, good aluminum corrosion prevention ability can be obtained even if the amount of water added is reduced. At the same time, the amount of water added can be reduced. It can be seen that the storage stability of the fuel to be used at room temperature and low temperature is improved, and that these ethylene glycols have the effect of reducing the amount of water added.

The results obtained when acetone was added as a ketone instead of the water, and the results obtained when water was added together with water are shown in FIG. 16 under the compound name “EIPP-30-Ac”. When this acetone was added alone without water, good corrosion resistance of aluminum at 100 ° C. was obtained with the addition of 3.0% by weight, and 120% with addition of 4.0% by weight. ^As well as good corrosion resistance of aluminum in DC, good results are obtained in both room-temperature stability and low-temperature stability in both formulations, and these acetones can be used well as aluminum corrosion inhibitors. You can see this.

In addition, from the result of adding both acetone and water shown in “EIPP-30_Ac” in Fig. 16, good corrosion inhibition of aluminum can be obtained even if the amount of added water is reduced, Not only shows that the obtained fuel has improved storage stability at room temperature and low temperature, but also when the same addition amount as in the case of adding the water alone is used. It can be seen that the addition of acetone further improves the low-temperature stability of the resulting liquid fuel, and that these acetones have the effect of reducing the amount of water added and improving the low-temperature stability. . In addition, the results of the case where methyl formate was added alone as the ester instead of the water and the result of the case where it was added together with water are shown in the formulation name “EIP P-30-GM” in FIG. When this methyl formate was added alone without water, good corrosion resistance of aluminum at 10 o ° c was obtained at the addition of 1.5% by weight, and at the addition of 6.0% by weight. In addition to obtaining good corrosion resistance of aluminum at 120 ° C., good results were also obtained in both room temperature stability and low temperature stability in both of the above formulations, and these methyl formate were used as aluminum corrosion inhibitors. It turns out that it can be used well.

In addition, from the results of adding both methyl formate and water shown in “EIPP-30-GM” in Fig. 16, good aluminum corrosion prevention performance can be obtained even if the amount of water added is reduced. In addition, since the addition amount of these waters can be reduced, it can be seen that the room temperature and low temperature storage stability of the obtained fuel are improved, It can be seen that the addition of methyl formate when the same amount was added as that in the case where the body was added improved the low-temperature stability of the resulting liquid fuel. It can be seen that there is an effect of reducing the amount and an effect of improving low-temperature stability. In addition, the results obtained when butyl aldehyde was added alone instead of the water as the aldehydes, and the results obtained when butyl aldehyde was added together with water are shown in FIG. 16 under the compound name “EIPP-30-BA”. When this butyraldehyde was added alone without water, good corrosion resistance of aluminum at 100 ° C was obtained at the addition of 0.6% by weight, and at the addition of 1.0% by weight. In addition to obtaining good corrosion resistance of aluminum at 120 ° C., good results were obtained in both room temperature stability and low temperature stability in both of the above formulations, and these butyl aldehydes were converted to aluminum alloy. It can be seen that it can be used favorably as a rubber corrosion inhibitor.

In addition, from the result of adding both butyl aldehyde and water shown in “EIPP-30-BA” in Fig. 16, good aluminum corrosion prevention ability was obtained even when the amount of added water was reduced. And the amount of water added can be reduced, indicating that the obtained fuel has improved storage stability at room temperature and low temperature, and these aldehydes have the effect of reducing the amount of water added. You can see that.

As for EIPP-30, which is a basic blend containing ether in EIPP-30, the above methanol, ethylene glycol, acetone, methyl formate, and butyl aldehyde were added similarly to EIPP-30 to corrode aluminum. Fig. 31 shows the results of tests conducted for storage stability. From the results shown in FIG. 31, it was found that the effect obtained in the case of EI PP-30 was similarly obtained even when ether was added. It can be seen that ethylene glycol, acetone, methyl formate and butyraldehyde can be used effectively.

Then, the basic composition of a EIPP- 1 5 in Formulation Example 14, naphtha 8 5 wt%, ethanol 5 wt ^_0/0, isopropyl alcohol 5 wt ^_0/0, 1 one pentanol 5 by weight%, of alcohol The type is a combination different from that of the PNB-30, and the ratio is small.

When water is added up to 0.8% by weight to this EI PP-15, As shown in the figure, the weight loss due to aluminum corrosion at 120 ° C has disappeared, indicating that the corrosion resistance has been improved. Although there is no problem with the water resistance, the weight loss due to the aluminum corrosion does not occur. When water is added up to 0.8% by weight, layer separation occurs in the preservation test at minus 10 ° C. At the same time, water addition of 1.0% by weight was found to cause layer separation even at room temperature, and although the addition of water had an effect on aluminum corrosion due to dry corrosion, the storage stability was reduced by the addition of water. It turns out that it will.

On the other hand, the result when methanol was added in place of the water is shown in FIG. 17 with the combination name “EIPP-15-Me”. When this methanol was added, it was found that the corrosion resistance of aluminum was improved when 1.0% by weight was added, and good corrosion resistance of aluminum was obtained even at 10 ° C and low temperature. Stability also shows good results. In addition, the addition of 2.0% by weight gives good results even in the corrosion resistance of aluminum at 120 ° C, does not cause layer separation even at room temperature or low temperature, and is stored at room temperature and low temperature. It can be seen that the addition of these methanols can improve the properties, and that these methanols can be used well as aluminum corrosion inhibitors.

In addition, from the results of adding both methanol and water shown in 1IP P- 15 -Me J in Fig. 17, good aluminum corrosion prevention performance was obtained even when the amount of water added was reduced. In addition, since the amount of water added can be reduced, it is understood that the obtained fuel has improved storage stability at room temperature and low temperature, and has an effect of reducing the amount of added methanol-water.

In addition, the result of adding propylene dalicol as glycols instead of the water is shown in the compound name “EI PP-15-PG” in FIG. When propylene glycol was added, the corrosion resistance of aluminum was found to be improved with the addition of 2.5% by weight, and the corrosion resistance of aluminum was excellent even at 10 ° C. As well as good stability at low temperature. In addition, with the addition of 4.0% by weight, good results are obtained even with the corrosion resistance of aluminum at 120 ° C, and no layer separation occurs even at room temperature and low temperature. It can be seen that the temperature and low temperature storage stability can be improved by the addition of these propylene dalicols, and that these propylene dalicols can be used well as an aluminum corrosion inhibitor.

In addition, from the results of adding both propylene glycol and water shown in “EI PP_15-PG” in Fig. 17, good aluminum corrosion prevention ability can be obtained even if the amount of water added is reduced. In addition, since the amount of added water can be reduced, it can be seen that the obtained fuel has improved storage stability at room temperature and low temperature, and that these propylene dalicols have the effect of reducing the amount of added water. I understand.

In addition, the results obtained when getyl ketone was added instead of the water as the ketones, and the results obtained when it was added together with water are shown in the compound name “EIPP-15-DEK” in FIG. When this getyl ketone is added alone without water, good corrosion resistance of aluminum at 100 ° C. is obtained at the addition of 2.0% by weight, and 120 ° C. at the addition of 3.0% by weight. In addition to good corrosion resistance of aluminum in C, good results were obtained in both room-temperature stability and low-temperature stability in both formulations, indicating that these getyl ketones can be used well as aluminum corrosion inhibitors. I understand.

In addition, from the results of addition of both getyl ketone and water shown in Fig. 17 ΓΕIP P- 15 -DEKJ, good corrosion protection of aluminum was obtained even if the amount of water added was reduced. And the amount of water added can be reduced, indicating that the resulting fuel has improved storage stability at room temperature and at low temperatures. It was found that the addition of these getyl ketones improved the low-temperature stability of the resulting liquid fuel when these were added, and these getyl ketones reduced the amount of water added and improved the low-temperature stability. It turns out that it is effective.

In addition, the results obtained when methyl acetate was added alone as the ester instead of the water and the result obtained when water was added together with water are shown in the formulation name “EIPP-15-SMJ” in FIG. When water alone was added without water, good corrosion resistance of aluminum at 100 ° C was obtained at the addition of 1.2% by weight, and at 120 ° C at the addition of 4.0% by weight. Good corrosion resistance of aluminum In addition, good results were obtained in both the room-temperature stability and the low-temperature stability in both the above-mentioned formulations, and it can be seen that these methyl acetates can be used well as an aluminum corrosion inhibitor.

In addition, from the results of adding both methyl acetate and water shown in “EI PP-15-SM” in Fig. 17, it can be seen that even if the amount of water added is reduced, good aluminum corrosion prevention ability is obtained. As well as being able to reduce the amount of water to be added, it can be seen that the resulting fuel has improved storage stability at room temperature and low temperature, and the same amount of water as when the water alone was added. It was found that the addition of methyl acetate improved the low-temperature stability of the resulting liquid fuel when these were added, and these methyl acetates reduced the amount of water added and improved the low-temperature stability. It turns out that it is effective. In addition, the results obtained when propion aldehyde was added alone as the aldehydes instead of the water, and the results obtained when it was added together with water, are shown in the formulation name “EIPP-15-PA” in FIG. . When this propion aldehyde was added alone without water, good corrosion resistance of aluminum at 100 ° C was obtained at the addition of 0.5% by weight, and 0.8% by weight was added. In addition, good corrosion resistance of aluminum at 120 ° C was obtained, and good results were obtained in both room temperature stability and low temperature stability in both of the above formulations. It turns out that it can be used favorably as an inhibitor. In addition, from the results of adding both propionaldehyde and water shown in “EI PP-15-PA” in Fig. 17, good aluminum corrosion prevention ability was obtained even when the amount of water added was reduced. And the amount of water added can be reduced, indicating that the obtained fuel has improved storage stability at room temperature and low temperature, and these propionaldehydes have the effect of reducing the amount of water added. You can see that.

For EIPP-15, which is a basic formulation containing ether in EIPP-15, methanol, propylene glycol, getyl ketone, methyl acetate and propionaldehyde were added in the same manner as EIPP-15. Figure 32 shows the results of tests conducted on the aluminum for corrosion and storage stability. From the results shown in FIG. 32, it can be seen that the effect obtained in the case of EIPP-15 was similarly obtained even when ether was added. It can be seen that the above-mentioned compounds containing methanol, propylene dalicol, getyl ketone, methyl acetate, and propionaldehyde can be used effectively.

Then, the basic composition of the EI PP- 75 Formulation Example 1 5, naphtha 25 wt%, ethanol 25 weight ^_0/0, isopropyl alcohol 25 wt ^_0/0, 1 one pentanol 25% by weight, the type of alcohol However, there are three types different from the above-mentioned PNB-75, and a high alcohol ratio is blended. As can be seen from FIG. 18, this EIPP-75 also has a weight loss due to aluminum corrosion due to dry corrosion similar to that of EIPP-15.

When water is added to EIPP-75, good corrosion resistance of aluminum can be obtained at 10 ° C by adding water up to 1.1% by weight. When water is added up to 1.7% by weight, good corrosion resistance of aluminum is obtained at 120 ° C.

On the other hand, the result obtained when methanol was added instead of the water is shown in FIG. 18 with the compound name “EIPP-75-Me”. When this methanol was added, it was found that the corrosion resistance of aluminum was improved with the addition of 2.0% by weight, and good corrosion resistance of aluminum was obtained even at 10 ° C and low-temperature stability. Also shows good results. In addition, the addition of 3.0% by weight gives good results even in the corrosion resistance of aluminum at 120 ° C, does not cause layer separation even at room temperature or low temperature, and is stored at room temperature and at low temperature. It can be seen that the addition of these methanols can improve the properties, and that these methanols can be used well as aluminum corrosion inhibitors.

In addition, from the results of adding both methanol and water shown in “EI PP-75-Me” in Fig. 18, good results can be obtained with a smaller amount of methanol by mixing methanol and water. It can be seen that not only can the aluminum prevent corrosion, but also good room temperature and low-temperature storage stability can be obtained, and that these waters have the effect of reducing the amount of methanol added.

The results obtained when ethylene daricol was added instead of the water as the dalicols are shown in FIG. 18 under the compound name “EIPP-75-EG”. When this ethylene glycol is added, the addition of 4.0% by weight of aluminum It can be seen that the corrosion resistance has been improved, indicating that good corrosion resistance of aluminum can be obtained even at 10 ° C and that the low-temperature stability is also good. In addition, with the addition of 8.0% by weight, good results are obtained in the corrosion resistance of aluminum at 120 ° C, and no layer separation occurs at room temperature or low temperature, and the storage stability at room temperature and low temperature is improved. It can be seen that improvement can be achieved by the addition of these ethylene glycols, and thus these ethylene glycols can be favorably used as an aluminum corrosion inhibitor.

In addition, based on the result of adding both ethylene glycol and water shown in “EI PP-75-EG” in Fig. 18, it is possible to mix ethylene dalicol and water to achieve a smaller amount of ethylene glycol. It can be seen that a good aluminum corrosion prevention ability can be obtained, as well as good room-temperature and low-temperature storage stability, and that these waters have an effect of reducing the amount of ethylene dalicol added.

In addition, the results obtained when methyl ethyl ketone was added instead of the water as ketones, and the results obtained when water was added together with water are shown in the compound name “EIPP-75-MEK:” in FIG. 18. . When this methyl ethyl ketone was added alone without water, good corrosion resistance of aluminum at 100 ° C. was obtained at the addition of 3.0% by weight, and 120% at the addition of 5.0% by weight. Good corrosion resistance of aluminum at ° C was obtained, and good results were obtained in both room temperature stability and low temperature stability in both formulations, and these methyl ethyl ketones are good as aluminum corrosion inhibitors It can be seen that it can be used.

In addition, based on the results of adding both methylethyl ketone and water shown in “EIPP-75-MEK” in Fig. 18, the mixing of methylethyl ketone and water reduces the amount of methylethyl ketone. It can be seen that not only good corrosion protection of aluminum can be obtained with the amount of ketone, but also good room temperature and low temperature storage stability can be obtained, and that these waters have the effect of reducing the amount of added methylethyl ketone. I understand.

In addition, the results when methyl formate is added alone as the ester instead of the water and the result when it is added together with water are shown in the formulation name “EIP P-75-GMJ” in FIG. 18. When methyl was added alone without water, good corrosion resistance of aluminum at 100 ° C was obtained with the addition of 3.0% by weight. With the addition of 9.0% by weight, good corrosion resistance of aluminum at 120 ° C. was obtained, and also in both the above-mentioned formulations, good results were obtained in both room-temperature stability and low-temperature stability. It can be seen that methyl formate can be used well as an aluminum corrosion inhibitor.

In addition, based on the results of adding both methyl formate and water shown in “EI PP-75-GM” in Fig. 18, by mixing methyl formate and water, it is possible to reduce the amount of methyl formate. It can be seen that good aluminum corrosion inhibiting ability can be obtained and good room temperature and low temperature storage stability can be obtained, and that these waters have the effect of reducing the amount of methyl formate added.

In addition, the results of the case where acetoaldehyde was added alone as the aldehyde instead of the water and the result of the case where it was added together with water are shown in the compound name “EIP-75-AA” in FIG. When this acetoaldehyde was added to water alone without water, good corrosion resistance of aluminum at 100 ° C. was obtained with addition of 0.5% by weight, and 1.0% by weight was obtained. In addition, good corrosion resistance of aluminum at 120 ° C was obtained, and good results were obtained in both room temperature stability and low temperature stability in both of the above formulations. It turns out that it can be used favorably as a film corrosion inhibitor.

In addition, from the result of adding both acetoaldehyde and water shown in “EIPP-75-AA” in Fig. 18, good aluminum corrosion prevention ability was obtained even when the amount of water added was reduced. And the amount of water added can be reduced, indicating that the resulting fuel has improved storage stability at room temperature and low temperature, and these acetoaldehydes have the effect of reducing the amount of water added. It turns out that it has.

Regarding “EI PP-75_E”, which is a basic compound containing ether in EIPP-75, similarly to EIPP-75, methanol, ethylene glycol, methyl ethyl ketone, methyl formate, and acetoaldehyde were added. FIG. 33 shows the results of tests conducted on the corrosion and storage stability of aluminum. From the results shown in FIG. 33, it can be seen that the effect obtained in the case of EIPP-75 was similarly obtained even when ether was added. Ethylene glycol, methyl ethyl ketone, It turns out that methyl formate and acetoaldehyde can be used effectively.

The embodiments of the present invention have been described above with reference to FIGS. 4 to 33. FIG. 34 summarizes the effect of adding each aluminum corrosion inhibitor in each of these combinations.

As shown in Fig. 34, the use of methanol, dalicols, ketones, esters, and aldehydes as aluminum corrosion inhibitors has the effect of preventing aluminum corrosion by adding a single substance or adding water. It can be seen that either the effect of reducing the amount of water added or the effect of improving the storage stability by reducing the amount of added water can be obtained, and by using these, it has better aluminum corrosion prevention ability and more stable storage stability. Fuel can be obtained.

Although the embodiments of the present invention have been described in the above embodiments, the present invention is not limited to these embodiments, and changes and additions within the scope not departing from the gist of the present invention, that is, It is optional to add other raw fuels and additives (including metals and the like) to the extent that the characteristics of the fuel for an internal combustion engine of the present invention do not significantly change. Needless to say, this is included.

Further, in the above embodiments, gasoline fuel has been mainly described, but the present invention is not limited to this, and can be applied to other internal combustion engines such as diesel fuel as these fuels.

Claims

The scope of the claims

1. Aliphatic monohydric alcohols having 2 to 6 carbon atoms in the molecule or 10 to 75% by weight of simple or mixed alcohol components, and 25 to 90% of saturated or unsaturated hydrocarbon components. % By weight of the low-pollution liquid fuel for an internal combustion engine, wherein the obtained low-pollution liquid fuel for an internal combustion engine contains an aluminum corrosion inhibitor in an amount capable of preventing aluminum corrosion at a predetermined temperature. The aluminum corrosion inhibitor is at least one of methanol, glycol hydrocarbons, ketone hydrocarbons, ester hydrocarbons, and aldehyde hydrocarbons, and is characterized in that it is at least one of the following: Harmful liquid fuel.

2. The low-pollution liquid fuel for an internal combustion engine according to claim 1, wherein the low-pollution liquid fuel for an internal combustion engine contains at least water as the aluminum corrosion inhibitor.

3. In the low-pollution liquid fuel for an internal combustion engine, 5 to 30% by weight of at least one ether component having 12 or less carbon atoms in the molecule and having at least one ether bond in the molecule. 2. The low-pollution liquid fuel for an internal combustion engine according to claim 1, wherein