TW500798B - Detergent for addition of fuel oil and fuel oil composition - Google Patents

Abstract

Disclosed is a detergent for addition of fuel oils which comprises a polyether compound (A) represented by the following general formula (1), the polyether compound (A) having a weight-average molecular weight of from 1,000 to 3,500, a hydroxyl value of from 15 to 40, a solubility parameter (SP value) of from 8.8 to 9.4, an HLB value of from 2.5 to 6.0, a viscosity at 40 DEG C of 700 mm <SP>2</SP>/s or lower, and a chlorine content of 10 ppm by mass or lower: H2N-(C2H4O)m-(XO)n-H (1), wherein X represents an alkylene group having 2 to 4 carbon atoms; m represents an integer of 1 to 3; and n represents an integer of 15 to 50. A fuel oil composition using the above detergent is also disclosed.

Description

500798

Scope of the invention The present invention relates to a fuel oil cleaning agent and a fuel oil composition. The present invention particularly relates to a fuel oil cleaning agent. The cleaning agent for fuel oil addition has excellent solubility in fuel oil and can be cleaned very effectively The invention also relates to a fuel oil composition for a suction valve and a combustion chamber of a gasoline engine. BACKGROUND OF THE INVENTION Adhesion of deposits to the intake valves and combustion chamber walls of an internal combustion engine adversely affects the function of the engine and exhaust gases. Therefore, various cleaning additives need to be added to the fuel oil to remove deposits, prevent deposition, and clean. For example, U.S. Patent No. 3,444.0, 29, European Patent Application No. 310,875, JP-B-56-48556 (&quot; JP-B &quot; means &quot; Examined Japanese Patent Bulletin &quot;), JP -A-3-128933 ("JP-A" refers to &quot; Unexamined and Published Japanese Patent Application "), Japanese Patent Application No. 3-229797, and Japanese Patent Application No. 6-322381 Additives of amino ether compound type and polyamino ether compound type. The amino ether compound basically shows a satisfactory cleaning effect. However, under strict driving conditions (including frequent frequent acceleration and deceleration), the cleaning effect is insufficient. Therefore, it is necessary to further improve its operation performance. In addition, these compounds have such a problem, for example, the reaction product contains _, such as chlorine ^ retained in the reaction product from (especially chlorine) generated acid gas and the like, which This can cause metal erosion problems in the engine. DETAILED DESCRIPTION OF THE INVENTION Accordingly, it is an object of the present invention to provide a cleaning for fuel oil addition.

-4-This paper size is applicable to China National Standard for Release (CNS) Α4 (21〇X297i: iT 500798

Moreover, it does not corrode metals or agents, and the fuel oil has excellent cleaning ability. Other materials q Another object of the present invention is to provide a fuel oil composition. In order to accomplish the above object ', many inventors have conducted sufficient research. They found that a special polyacid compound exhibited excellent results when used as a fuel oil cleaner or a fuel oil composition. The present invention is derived from this discovery.

The present invention provides a fuel oil cleaner comprising a polybonded compound (A), which is represented by the following general formula (1) and has a weight average molecular weight from 1,000 to 3,500, Solubility parameter (sp value) from 88 to 94, HLB value from 2.5 to 6.0, its viscosity at 40 ×: is less than or equal to 700 mm 2 / g, and the mass content of gas is less than or equal to 10 ppm. The present invention further provides a detergent-containing fuel oil composition. H2N- (C2H40) m- (X〇) nH ⑴ In the general formula (1), X represents an alkylene group having 2 to 4 carbon atoms; 111 represents an integer of 1 to 3; η represents 15 to 50 An integer. . The cleaner and composition will be explained in detail below. The general formula (1) represents the polyether composition (A) of the present invention, wherein X is an alkylene group having 2 to 4 carbon atoms (such as ethylene, propylene, or butylene), and is preferably an alkylene group. Propyl or butylene. If X is an alkylene group having one carbon atom, the polyether compound may be poorly soluble in the fuel oil. If the number of carbon atoms in X exceeds 4, the cleaning effect of the polymerization may become small. Therefore, the number of carbon atoms is too large or too small. At the same time, m is an integer from 1 to 3, preferably -5- This paper size applies to Chinese National Standard (CNS) A4 specification (210X 297 mm) A7 A7

Is 1, and n is an integer of 15 to 50, preferably 20 to 50, and more preferably 25 to 40. If η is less than 15, the cleaning effect on the combustion chamber may become small. If ^ exceeds 50, the effect of cleaning the suction valve may become small. Therefore, the value of η that the above range is not suitable is not suitable. The weight-average molecular weight of the polyether compound (A) is from 1,000 to 3,500, preferably from 1,300 to 3,500, more preferably from 乂 ⑽ to 3,250, and even more preferably from 15,000 to 3,000. If its weight-average molecular weight is lower than i'ooo, the effect of cleaning the burned plutonium may become small. Above 3,500, the effect of cleaning the suction valve may be reduced. Therefore, a weight average molecular weight outside the above range is not desirable. Herein, the 'weight-average molecular weight' is determined by gel permeation chromatography, and is measured in terms of polyethylene. The hydroxyl value of the polyether compound (A) is from 15 to 40, preferably from 18 to 35, and more preferably from 20 to 30. If the hydroxyl value is lower than 5, the cleaning effect on the combustion chamber may be reduced. If it exceeds 40, the cleaning effect on the suction valve may become small. Therefore, the range of the 'township value' should not exceed the above range. The solubility parameter (SP value) of the polyether compound (A) is from 8.8 to 9.4, and more preferably from 8.8 to 9.2 'from 8.8 to 9.0. If the SP is lower than 8.8 or higher than 9.4, the solubility and cleaning effect of the polyether compound in the fuel oil may become small. Therefore, the SP value should not exceed the above range. In the present invention, the solubility parameter (SP) value is calculated according to the Feder method [Polymer Engineering (Polym Eng · Sci), 14 (2) 152, (1974)]. HLB of the polyether compound (A) The value is from 2.5 to 6.0, preferably from 3.0 to 5.5, and more preferably from 3.5 to 5.0. If the HLB value of the compound (A) is less than 2.5, the solubility and cleaning effect of the polyether compound in gasoline may become small. -6- This paper size applies Chinese National Standard (CNS) A4 specification (210X297 mm) 500798 A7 B7 (4 V. Description of the invention If it is greater than 6.0, the separation between polyether compound and water may become smaller, and it may affect the fuel tank. , Engine, etc. cause corrosion and rust problems. Therefore, the HLB value should not exceed the above range. In the present invention, the HLB value is calculated according to the Oda method [described in Oda and Terada (〇da and Terada) "Kaimen Kasseizai No Gosei To Sono oyo (Synthesis and Application of Surface Active Agents)", p. 501 "published by Maki Shoten (1957 )]. The viscosity of the polyether compound (A) at 4 (TC is less than or equal to 700 mm 2 / sec, preferably less than or equal to 500 mm 2 / sec, and more preferably less than or equal to 350 mm 2 / sec. Polyether compound ( A) The lower limit of viscosity at 40 ° C is preferably 10 mm 2 / sec, more preferably 30 mm 2 / sec, and most preferably 50 mm 2 / sec. It is not good to exceed 70 mm 2 / sec. The cleaning effect may be reduced. Although the viscosity of 100 ° C of Jumei compound (A) is not limited, but It is usually less than or equal to 100 mm 2 / sec, preferably less than or equal to 80 mm 2 / sec, and most preferably less than or equal to 50 mm 2 / sec. The lower limit of the viscosity of 10.0 of the polyether compound (eight) It is preferably 1 mm 2 / s, more preferably 5 mm 2 / s, and most preferably 0 mm 2 / s. The mass content of chlorine in the polyether compound (A) is 0 to 10 ppm, and preferably 0 to 7 PPm. 0 to 5 ppm is more preferable. When the mass content of the gas exceeds 10 ppm, the metal corrosion in the engine will be increased. The method for synthesizing the polyether compound (A) is not particularly limited, but τ (hydrogen, Ammonia, halogen, etc.), the preferred method for synthesizing the compound (A) is to hydrolyze the polyether compound containing an imine group. A more preferable synthesis method is to hydrolyze the polyether compound containing an imide group represented by the following general formula (2) :

) x 297 mm) 500798 A7 ____B7 V. Description of the invention (5) R1R2C = N- (C2H40) m- (X0) nH (2) In the general formula (2), R1 and R2 respectively have 1 to A hydrocarbon of 8 carbon atoms, but the conditions are limited so that the carbon atom of at least one of Ri and R2 adjacent to the imino group is a secondary carbon or a tertiary carbon; X represents a carbon atom having 2 to 4 carbon atoms Alkylene; m represents an integer of 1 to 3; n represents an integer of 20 to 50. Examples of the hydrocarbon group of 1 to 8 carbon atoms representing R 1 and R 2 include methyl, ethyl, n-propyl, isopropyl, isobutyl, third butyl, isooctyl, 2-ethylhexyl and 1 -Ethyl. Examples of the sub-carbon having 2 to 4 carbon atoms are the same as listed above. The imide-containing ether compound can be synthesized. For example, a compound having both a primary amine group and a hydroxyl group (such as monoethanolamine) is heated together with a ketone to dehydrate the amine compound, thereby obtaining an active hydrogen-containing group. Amine compounds, and then imide compounds are etherified. Examples of the ketone used above include methyl isobutyl ketone, diisopropyl ketone, diisobutyl ketone, and di-third butyl ketone. The reaction for introducing an amine group can be performed by a general method. For example, in the presence of ketones equivalent to 0.5 to 2 primary amine equivalents of the primary amine compound, the primary amine compound is heated to loot to 14 ° C (TC dehydrated), and an imine group containing an active hydrogen group can be easily obtained. Compound 'This reaction can be carried out in the presence of a refluxing solvent (such as toluene), and can form an azeotrope with water. The acidification reaction can be completed by adding oxygen elongation (alkylene oxide) to the ketimine-containing compound and heating At the same time, a catalyst (such as sodium hydroxide or potassium chloride) is present. If necessary, it can be injected in a suitable solvent, such as 4 ^^ J such as benzyl or dibenzobenzene. The reaction temperature is usually 70 ° C to 140 ° C, better &amp; ^ dry and live 90C to 130 t: 〇-8-

A7 ^ _ V. The invention) --- If you obtain an active hydrogen-containing ketimine with a ketone (such as acetone, methyl ethyl ketone or -ethyl rim) showing reduced steric hindrance, then When the temperature is higher than 80 ° C, a side reaction to eliminate the imine group occurs, and a by-product (such as a secondary amine) is obtained. However, when a ketone exhibiting enhanced steric hindrance is used to interact with the imine, an active hydrogen group-containing ketimine can be obtained. In the present invention, such side reactions can be suppressed to a very low degree. The end result is a compound with great cleaning power. X-solving the above imine-containing acid compound will obtain a polyacid compound (A). The provincial compound has both a primary amine group and a hydroxyl group, and is represented by the general formula (1) as: H2N- (C2H40) m- ( X0) nH (1) In the general formula (1), X represents a hydrocarbon group having 2 to 4 carbon atoms; m represents an integer of 1 to 3; η represents an integer of 15 to 50. The hydrolysis is performed, for example, by heating the ether compound in the presence of excess water. The reaction temperature is generally from 90 ° C to 140. (:, Preferably from 95 t to 125 ° C. The ether compound (A) containing a primary amine group is not particularly limited in terms of weight loss during pyrolysis. But in terms of cleaning ability, when heated from room temperature at a rate of 25 t / min At 200 ° C, the weight loss of pyrolysis of the ether compound should be less than 5% by weight, and the weight loss of pyrolysis at 300 ° C should be greater than or equal to 95% by weight. The weight loss of pyrolysis at 200 t is preferably less than 3% by weight. % 'And it is preferably greater than or equal to 97.7% by weight at 300 ° C. Pyrolysis weight loss is less than 1% by weight at 200 ° C and greater than or equal to -9 at 300- This paper size applies Chinese National Standard (CNS) A4 specification (210X297mm) A7 _____ B7 5. Invention description (7) 99% is better. The second component (ie, oil carrier) can be added to the fuel cleaning agent of the present invention. Examples of the second component include aromatic Hydrocarbons, such as toluene, xylene, triethylbenzene and ethylbenzene; aliphatic hydrocarbons, such as decane, decyl, dodecane, dodecene, and% hexane), and hydrocarbons containing hetero groups, such as Pyridine, pyrrolidone, morpholine and dimethylformamide "From the standpoint of the stability of gasoline and detergents, the second component is preferably such a hydrocarbon The hydrocarbon has a flash point from 88 to 96 to 51, a flash point from 100 to 100 ° C, and from 150. (: To 250 t: boiling point. The second component is more preferably a kind having a value from 8.8 to 9.6, a flash point from 40 to 100, and a boiling point of 150 ° C to 25 ° C. Aromatic hydrocarbons β. The content of the second component (B) in the fuel oil of the present invention should generally be such that the weight ratio of (B) / [(Α) + (Β)] is from 0 to 0 97, preferably from 0 1 〇 至 〇95. The fuel oil additive of the present invention comprises a polyether compound (A), which can be added to various fuel oils, such as fuels for internal combustion engines, including petroleum distillates, alcohols, LNG (liquefied natural gas), and vegetable oil The cleaner is preferably added to gasoline and gas oil (gasoline) for internal combustion engines. At this time, the cleaner is very effective for cleaning the suction system and combustion chamber of diesel engines and Diesel engines Injection nozzles and combustion chambers of engines (ie, diesel engines). It is better to add this cleaner to gasoline for internal combustion engine engines. There are no special restrictions on gasoline for internal combustion engine engines. However, it is generally error-free gasoline. It is preferable to satisfy all the following items (1) to (11): and to satisfy the following items (12) to At least one condition item 14) (1) Research Octane: &gt;89; (2) sulfur content: S80ppm (by mass); -10-

500798 A7 ___ B7 V. Description of the invention (8) (3) 50% library temperature (nmning temperature): 75 100 ℃; (4) 90% distillation temperature · 110 ° C -160 ° C; (5 ) End point of distillation: 130QC-210 ° C; (6) Non-detergent content: S20 mg / 100 liters; Detergent content: S3 gram / 100 ml; (7) Oxide content · 0-2.7% by weight ( Based on oxygen atom content); (8) Density (15 ° C): 0.715-0.770 g / cm3; (9) Total calorific value (total calorific value): 240,000 Joules / g; (10) Oxidation stability: 2480 Minutes; (1 1) Corrosion degree of copper plate: 1; (12) Aromatic hydrocarbon content: [1] V (aromatic): &lt; 35 vol% [2] V (benzene): 0-5 vol% [3] V (Toluene): 0-25 vol% [4] Thallium (〇8 芳): 0-15 vol% [5] From (€ 9 aromatic): 0-15 vol% [6] V (C 1 0 + aromatic System) ·· 〇- 1 5 vol% [7] V [(C9 aromatic system) + V (C10 + aromatic system)] / [V (toluene) + V (C8 aromatic)]: 0-0.2 [8] V (Poly-substituted aromatics) = 0; or, when V (poly-substituted aromatics) is 0 in total, V (mono-substituted aromatics) / V (poly-substituted aromatics) &gt;1; above [1] to [8] In the item, V (aromatic), V (benzene), V (toluene), V (C8 System), V (C9 aromatic system), V (C10 + aromatic system), V (mono-substituted aromatic system), and V (multi-substituted aromatic system) represent all aromatic systems, benzene, methylbenzyl, with 8-11- This paper size applies to China National Standard (CNS) A4 specifications (210 X 297 public love) Aromatic aromatic systems, aromatic systems with 9 carbon atoms, aromatic systems with 10 or 1 ο carbon atoms, single alkane The content of aromatic groups substituted with aromatic groups and aromatic groups substituted with 2 or more carbon atoms, and based on the total amount of unleaded gasoline; (1 3) Has the following lipid content: [1] V (C5): 15-40 Vol% [2] V (C6): 10-35 vol% [3] V (C7-P): 5-30 vol% where V (C5), V (C6), and V (C7 + P) represent Lipids with 5 carbon atoms: 1: The content of aliphatic hydrocarbons with 6 carbon atoms and aliphatic hydrocarbons with 7 or more carbon atoms. (1 4) Hydrocarbon content of 4 carbon atoms: 0 to 50 volume 0 / 〇. In the present invention, the fuel oil cleaning amount added to the fuel oil is not particularly limited. However, in terms of cleaning effect, the amount thereof is generally from 50 to 20,000 ppm (by mass), preferably from 70 to 10,000 ppm. If necessary, other additives such as antioxidants, metal deactivators, rust inhibitors, and dehydrating agents may be added to the fuel oil containing the fuel oil cleaner of the present invention. Examples of antioxidants include n, n, -diisopropyl-p-phenylenediamine · ν, ν, _- isobutyl-p-phenylenediamine and hindered g (such as 2,6-di-third · Butyl-4 -methylphenylhydrazone). Examples of metal deactivators include amine / carboxy condensates, such as N, N · _disalicylic acid-1,2-diaminopropane. Examples of the rust inhibitor include organic carboxylic acids and derivatives thereof. Examples of dehydrating agents include lower alcohols and sorbitan esters. The following will explain the present invention in detail through reference examples, but the present invention is not subject to its -12- This paper size is suitable for t ® mesh conversion ^ (CNS) A4 size (21G X 297 mm) 500798 A7 B7 V. Description of the invention (1〇 Restrictions. In the examples and comparative examples, the abbreviations of the raw materials used have the following meanings: [Amine compounds] MEA: Monoethanolamine DBA: Dibutyl monoethanolamine [ketone] DIBK: Diisobutyl ketone [oxyalkylene] EO: Ethylene oxide P 0: Propylene oxide B 0: Butylene oxide Examples 1 to 6 An amine compound and a ketone (the respective amounts of which are shown in Table 丨) were charged into a reactor, and the remote reactor was equipped with a thermometer , Stirrer, reflux condenser, and nitrogen inlet tube. After replacing the air in the reactor with nitrogen, the contents were heated at 125 c for 8 hours to perform dehydration and ketimine formation reactions. During the ketimine formation reaction After that, the reaction mixture was cooled to 6 (rc.) To which 13.0 g of potassium hydroxide catalyst was added. After the atmosphere in the reactor was changed to nitrogen, the reactor was closed, and the contents were heated to 100. (:. After that, Reduce the internal pressure to 2,000 Pa and remove the added catalyst over 1.5 hours Then, the internal pressure was raised to normal pressure with nitrogen, and the reactor was sealed. To this reactor was added oxy-ethanane (AO-1) (the amount of which is shown in Table i), and the resulting mixture was reacted at 125 t: 8 hours. Then, add another oxygen sintering (A 0-2) (the table is shown in Table 1) to the reactor, and make the resulting mixture at -13 «This paper size applies Chinese National Standard (CNS) A4 Specifications (210X 297 mm) 500798 A7 B7 V. Description of the invention (11) Reaction at 125 ° C for 8 hours. After the reaction is completed, the contents are cooled to 60 ° C, then neutralized with hydrochloric acid, and then the filtered catalyst is removed by filtration. Then, 80 g of water was added to the filtrate, and the hydrolysis reaction was performed at 105 ° C for 8 hours. Finally, the reaction mixture was heated to 120 ° C at normal pressure, and then the internal pressure was reduced to 2,000 Pa, which was distilled off in 1.5 hours. Ketone and excess water. Allow the residue to cool to room temperature to obtain the ether compound of the present invention containing a primary amine group. The weight average molecular weight, hydroxyl value, SP (concentration parameter) value, HLB value, 40 ° C viscosity of the obtained sample , Chlorine content, and pyrolysis weight loss are shown in Table 3.

Table 1 Yield of ketone oxygen 7 个 AO-1 AO-2 Example 1 MEA 61 g (1 mole) DIBK 142 g (1 mole) BO 1440 g (20 mole) 1425 g Example 2 MEA 61 g (1 mol) DIBK 142 g (1 mol) BO 2160 g (30 mol) 2101 g Example 3 MEA 61 g (1 mol) DIBK 142 g (1 mol) EO 44 g (1 mol) BO 2160 grams (30 moles) 2152 grams Example 4 MEA 61 grams (1 mole) DIBK 142 grams (1 mole) EO 88 grams (2 moles) BO 2160 grams (30 moles) 2192 grams Example 5 MEA 61 grams (1 mole) DIBK 142 g (1 mole) PO 2320 g (40 mole) 2285 g Example 6 MEA 61 g (1 mole) DIBK 142 g (1 mole) PO 2% 0 g (50 mole) ) 2813 g binding

-14- This paper size is in accordance with Chinese National Standard (CNS) A4 specification (210X297 mm) 500798 A7 B7 V. Description of the invention (12) Example 7 To 800 g of the sample of Example 2 was added 200 g of trimethylbenzene (second ingredient). The mixture was stirred to obtain a sample of Example 7. Comparative Examples 1 to 3 An amine compound (the amount of which is shown in Table 2) and 13.0 g of potassium hydroxide catalyst were charged into a reactor equipped with a thermometer, a stirrer, a reflux condenser, and a nitrogen inlet pipe. After the atmosphere in the reactor was changed to nitrogen, the reactor was closed and the contents were heated to 100 ° C. Subsequently, the internal pressure was reduced to 2,000 Pa, and the moisture contained in the catalyst was removed over 1.5 hours. Then, the internal pressure was raised to normal pressure with nitrogen. Oxydyne (AO-1) (the amount of which is shown in Table 2) was added to the reactor, and the resulting mixture was reacted at 125 ° C for 8 hours. After the reaction was completed, the contents were cooled to 60 ° C, neutralized with hydrochloric acid, and then the catalyst was removed by filtration. Thus, polyether compounds as Comparative Examples Samples 1 to 3 were obtained. Table 3 shows the weight average molecular weight, hydroxyl value, SP value, HLB value, viscosity at 40 ° C, chlorine content, and pyrolysis weight loss of each sample obtained. Table 2 Yield of amine compounds AO-1 Comparative Example 1 DBA BO 1195 g 173 g 1440 g (1 mol) (20 mol) Comparative Example 2 DBA BO 3193 g 173 g 2160 g (1 mol) ( 30 mol) Comparative Example 3 DBA PO 3021 g Π 3 g 2900 g (1 mol) (50 mol) -15- This paper size applies to China National Standard (CNS) A4 (210X297 mm)

Binding

Line 500798 A7 B7 V. Description of the invention (13) The molecular formulas of the main compounds shown in Table 1 and Table 2 are as follows: Example 1

H2N-C2H4〇- (C4H8〇) 20-H Example 2

H2N-C2H4〇- (C4H8〇) 30-H Example 3

H2N- (C2H4〇) 2- (C4H8〇) 30-H Example 4

H2N- (C2H4〇) 3- (C4H8〇) 30-H Example 5

H2N-C2H4〇- (C3H6〇) 40-H Example 6

H2N-C2H4〇- (C3H6〇) 50-H Comparative Example 1 C4H9

N-C2H4〇- (C4H8〇) 20-H C4H〆 Comparative Example 2 C4H9

N-C2H4〇- (C4H8〇) 30-H C4H, Comparative Example 3 C4H9

N-C2H4〇- (C3H6〇) 50-H C4H9 / -16- This paper size applies to China National Standard (CNS) A4 specification (210 X 297 mm) 500798 A7 B7 V. Description of the invention (14) Molecular weight peep value SP value HLB value 40 ° C Viscosity chlorine content (mass) ppm Thermal weight loss 200 ° C 300 ° C F 1 Example 1 1600 37 8.95 4.0 120 &lt; 2 0.5 99.4 Example 2 2320 26 8.85 3.6 215 &lt; 2 0.3 99.4 Example 3 2330 25 8.86 3.7 218 &lt; 2 0.3 99.5 Example 4 2450 25 8.86 3.8 225 &lt; 2 0.4 99.6 Example 5 2500 24 8.92 4.9 248 &lt; 2 0.8 99.8 Example 6 3040 19 8.86 4.8 320. &Lt; 2 0.7 99.6 Comparative example 1 1700 33 8.82 3.6 125 &lt; 2 1.3 99.7 Comparative example 2 2500 22 8.76 3.5 220 &lt; 2 0.3 98.9 Comparative example 3 3150 16 8.76 4.3 324 &lt; 2 0.3 94.9 Evaluation test using engine engine, check example 1 To 7 and Comparative Examples 1 to 3 The cleaning ability of the samples obtained. The results obtained are shown in Table 4. Evaluation Test 1 A gasoline-driven multi-point injection engine with a total displacement of 2,000 cc (cubic centimeters) was used to drive a car with a total displacement of 2,000 cc (cubic centimeters), and the following drive pattern was repeated over 12 hours. One cycle required 30 minutes. Subsequently, the deposit adhesion amount of the intake valve was measured: Drive mode: Neutral (1 minute)-> 1,250 rpm (15 minutes)-2500 rpm (10 minutes)-> Stop ( 4 minutes) Then install the suction valve directly without removing the sediment. Drive the car with gasoline containing 10 ppm of each sample for 4 8 hours. Repeat the above drive mode. -17- This paper size applies Chinese National Standard (CNS) A4 specification (210X297 mm) 500798 A7 B7. 5. Description of invention (15) Formula, Each cycle takes 30 minutes. Thereafter, the amount of deposit of the suction valve was measured. The difference between this amount of sedimentation and the amount of sedimentation before using gasoline containing 100 ppm (by mass) of the sample is then determined, and this difference can be considered as a test for a clean inhalation system. Evaluation Test 2 A vehicle with 100 ppm of each sample was used to drive a vehicle with a 2,000 cc (cubic centimeter) total displacement multi-point injection engine at 1800 rpm for 120 hours. Then, the amount of deposition adhesion on the wall of the combustion chamber was measured. Furthermore, the difference between this deposition amount and the adhesion amount of the combustion chamber sediment driven by gasoline-free is determined. Table 4 Evaluation test 1 Difference in deposition amount in suction system (mg / suction valve) Evaluation test 2 Difference in deposition amount in combustion chamber (mg / cylinder) Example 1 -60.1 -10.5 Example 2 -63.4 -10.9 Example 3 -60.3- 9.2 Example 4 -62.9 -7.8 Example 5 -47.5 -9.6 Example 6 -35.5 -4.9 Example 7 -50.0 -4.1 Comparative Example 1 +2.2 +15.2 Comparative Example 2 +3.9 +13.0 Comparative Example 3 +1.9 +18.5 -18- This Paper size applies Chinese National Standard (CNS) A4 specification (210X 297 mm) 500798 A7 B7 V. Description of invention (16) Industrial application The above results clearly show that the fuel oil additives of the comparative example have no effect on the intake system deposits and combustion chambers. The cleaning ability of the sediment is poor. In contrast, the fuel oil additive of the present invention has excellent cleaning ability for suction system deposits and combustion chamber deposits. -19- This paper size applies to China National Standard (CNS) A4 (210X 297mm)

Claims (1)

500798 A8 1. A detergent for adding fuel oil, comprising a polyether compound (A), the compound (A) having a weight average molecular weight from 1,000 to 3,500, a hydroxyl value from 15 to 40, and 8.8 to 9.2 The solubility parameter value (SP value), the HLB value from 3.0 to 5.5, the viscosity at 40 ° C from 10 to 350 mm2 / s, and the chlorine content from 0 to 5 ppm (by mass) The compound has the following general formula: H2N. (C2H40) m. (X0) nH (1) wherein X represents an alkylene group having 2 to 4 carbon atoms; m represents an integer from i to 3; η represents 15 to 50 Integer. 2. The cleaning agent for adding fuel oil according to item 1 of the scope of the patent application, wherein the polyether compound (A) is obtained by hydrolysis of a polyether compound containing an imine group, and the polyether compound containing an imide group is based on General formula (2) represents: R1 R2 C = N- (C2H4〇) m- (XO) n-Η (2) wherein R1 and R2 each represent a hydrocarbon group having 1 to 8 carbon atoms, but the conditions are limited to, The carbon atom of at least one of R1 and R2 adjacent to the imino group is a secondary carbon or a tertiary carbon atom; X represents an alkylene group having 2 to 4 carbon atoms; m represents an integer of 1 to 3; n represents an integer from 20 to 50. 3. The cleaning agent for adding fuel oil according to item 1 or item 2 of the scope of patent application, wherein the pyrolysis weight loss of the polyether compound (A) at 200 ° C is less than 5% by weight and the pyrolysis loss at 300 ° C Greater than or equal to 95% by weight. -20 · This paper size is applicable to Chinese National Standard (CNS) A4 specification (210X 297 mm) 500798 ABCD VI. Patent application scope 4 · According to the application of the 1st or 2nd scope of the patent application for fuel oil cleaning agents, the The detergent further contains a second component (B), which is selected from hydrocarbons containing an aryl group, an aliphatic group, or a hetero group and has an SP value from 8.8 to 9.6, from 40 t: to 100 ° The flash point of C is from 150. &lt; Boiling point of 3 to 250 ° C, wherein the composition of the component (A) and the component (B) is (B) / [(A) + (B)] = 〇 ~ 〇.97. 5. The cleaning agent for adding fuel oil according to item 3 of the scope of patent application, the cleaner further contains a second component (B), the second component B has an SP value from 8.8 to 9.6, and from 40 ° C to 100 ° Flash point of C and boiling point from 150 ° C to 250 ° C. 6. The cleaning agent for adding fuel oil according to item 1 of the scope of patent application, wherein the polyether compound (A) has a weight average molecular weight of 0 to 3,000 to 3,500. 7. The fuel according to item 1 of the scope of patent application Detergent for oil addition, wherein in the general formula (1), η is 20 to 50. 8. The cleaning agent for adding fuel oil according to item 1 of the scope of patent application, wherein the polyether compound (A) has a weight average molecular weight from 1,000 to 3,500, and in the general formula (1), η is 20 To 50. 9. A fuel oil composition comprising a fuel oil for a gasoline engine and a cleaning agent for adding a fuel oil according to item 1 of the application scope of the patent, the cleaning agent accounting for 50 to 20,000 of the mass of the fuel oil. 〇ppm. -21-S S (⑽χ297