JPS585230B2 - Mortanen Ryouso Saibutsu - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION This invention relates to spark ignition, motor fuel compositions for internal combustion engines.

In particular, the present invention relates to detergent motor fuels containing additives that reduce or prevent deposit formation in the carburetor as well as in the intake system and combustion chamber of an internal combustion engine.

Accordingly, the formulation of the present invention is a particularly effective vaporizer cleaner for cleaning and maintaining vaporizer cleanliness, preventing, reducing or minimizing the formation of deposits within the inhalation system, such as on surfaces around valves and ports. It is something.

The invention also relates to additive concentrates of one or more additives in mixtures, solutions or combinations.

Modern internal combustion engine designs have undergone, and are already undergoing, significant changes to meet more stringent standards for engine and exhaust emissions.

A major engine design change has been in the past to feed or recirculate blow-by gas from the engine crankcase into the intake air supplied to the carburetor, rather than venting the exhaust to the atmosphere.

Blowby gas contains substantial amounts of deposit-forming substances and is known to form deposits around the throttle body of the carburetor.

These deposits restrict air flow through the carburetor at idle and low speeds, resulting in a fuel-rich mixture.

This condition causes an unpleasant engine idle and stall.
ing) and result in excess hydrocarbon and carbon monoxide exhaust emissions being released into the atmosphere.

In addition to the changes already made, it is expected that additional obligations and requirements will be placed on modern internal combustion engines and their fuels with the advent of new emission control devices such as exhaust gas recirculation systems and catalytic exhaust exhaust systems. There is.

Also, the use of certain fuel additives, such as alkylammonium phosphates, would be limited or eliminated because the catalyst exhaust exhaust where metal catalysts are used would be damaged by phosphorus-containing compounds.

It is an object of the present invention to obtain a cleaner motor fuel which has certain carburetor cleaning properties and which cleans and maintains the cleanliness of the carburetor and also the remaining fuel intake system such as valves and ports;
The goal is to reduce the increase in octane requirements for internal combustion engines.

Another object of the present invention is to obtain a cleaner fuel that maintains low levels of hydrocarbon and carbon oxide exhaust emissions and avoids the use of phosphorus-containing additives.

It is a further object of the present invention to provide a clean fuel having other desirable properties such as rust and corrosion protection, water demulsibility, and icing resistance.

It is a further object of the present invention to provide a multifunctional gasoline additive or additive mixture that, in addition to being effective as a carburetor detergent, is effective in inhibiting the formation of intake valve deposits; It is about 1010001 for example
) or less, preferably 600 ppm or less, more preferably 40
It can be used at relatively low concentrations (and therefore at relatively low cost) with throughputs of 0 ppm or less.

Of course, other detergent motor fuel compositions are available today, but they are generally used at very high concentrations that suffer from one or more defects, e.g., on the order of 4000 ppm, or the use concentrations of interest to us. If so, an effective formulation encounters one or more drawbacks.

The inventors have found the following combination to be effective in reducing or preventing the formation of vaporizer and other inhalation system deposits.

(1) selected tertiary-alkyl primary amines having a branched trunk and a total of 6-24, preferably 12-22 total carbon atoms; (2) surface-active trimer or dimer acids; Alkylammonium carboxylate salt-ethoxylated alkylphenol ester: and (3) a dimer or trimer acid produced by polymerization or condensation of an unsaturated aliphatic monocarboxylic acid having 16 to 18 carbon atoms per molecule or a dimer and a trimer acid. A mixture of dimer or trimer acid esters consisting essentially of completely esterified polyesters, which have been esterified with (or in combination with) a mixture of aliphatic and ethoxylated aromatic alcohols.

In accordance with one aspect of the present invention, we therefore provide for the addition of leaded, low-lead, or unleaded gasoline, i.e., distillate hydrocarbon fuels consisting of predominantly hydrocarbon-based fuels distilled within the gasoline distillation range. A normally liquid multifunctional additive composition is provided.

The ternary composition ranges from 125 to about 1000 parts total by weight of (1) tertiary branched chain alkyl primary as described above, from about 20 to about 250 parts, preferably from about 50 to about 100 parts by weight. Amine: about 5 to about 100 parts, preferably about 10 to about 25 parts (by weight) of a surface-active trimer or dimer acid alkyl ammonium carboxylate salt of (2) above - ethoxylated alkylphenol ester; and about 100 to about 25 parts by weight; 650 parts, preferably 200-4
00 parts (by weight) of the above-mentioned (3) trimer acid or dimer acid mixed ester.

In another aspect of the invention and where inhalation system control per se is primarily desired, the composition can be omitted with components (1) and (2) and component (3).
) can be used by itself in the fuel on a total weight basis of about 100 to about 650 ppm, preferably about 200 to 400 ppm, or component (3) can be used in combination with component (1) to provide good carburetor cleanliness and good provide a two-component package or blend that provides inhalation system deposit control;
) can be used with other vaporizer cleaners and/or other rust inhibitors.

When a combination or mixture of components (1) and (3) is used, they are used in the same amounts as above, i.e. about 220-5
0pp, preferably about 50-100ppm, (3) about 1100-650pp, preferably about 200-400ppm
ppm used.

On a fuel treatment level basis, i.e. in terms of gasoline quantities,
The total amount of the three-component additive composition is approximately 125 = approximately 1000 ppm.
(by weight), on an individual or component basis (1) is approximately 20
-250ppm, preferably 50-100ppm;
(2) should be added to or used in the gasoline in an amount of about 5 to about 1100 ppm, preferably about 10 to about 25 ppm, and (3) in an amount of about 100 to about 650 ppm, preferably about 200 to 400 ppm.

On a pound basis per gallon of gasoline, (1) is approximately 5
-62.5 preferably 12.5-25 lb/100
0 barrel gasoline: (2) is 1.25-25, preferably 2.5-6.25 lb/1000 barrel
gasoline; and (3) is 25-162.5, preferably 50-1001b/1000 barrel gasoline.

For the concentration of additive component (3) above (when used alone), the ppm concentration and treatment level of Bond/Versil gasoline are the same as described for component (3) above.

That is, (3) is about 25-162.5, preferably about 50-
100 lb/1000 barrel gasoline, or about 100-650 ppm, preferably about 200-400
It is ppm.

For the concentration of additive mixtures of (1) and (3) in gasoline, the treatment level is approximately 20-250 ppm of component (1).
Desirably about 550-100pp, component (3) about 10
It should be in the range of 0-6400 ppm.

On a pound-per-barrel basis of gasoline, this amount is about 5 to about 62 pounds of component (1) per 1000 barrels of gasoline.
51b preferably 12.5-25 1b; component (3)
is approximately 25-162.5 per 1000 barrels of gasoline.
lb, preferably 5O-1001b.

Tertiary or t-alkyl primary amines having at least one branch may be represented by the following general formula (I).

: where R1, R2 and R3 are alkyl groups with a total carbon atom content ranging from 6 to 24.

Preferably, two of the R groups, eg R1 and R3 of the t-alkyl primary amine, are methyl groups.

Branched t-alkyl primary amines that can be used in the compositions of the invention include, for example, t-octylamine, t-nonylamine, t-dodecylamine, t-tetradecylamine, t-octadecylamine, Included are t-tocodylamine, t-tetradecylamine and mixtures of two or more such amines.

These amines are prepared by reactions such as the reaction of nitriles with alkenes or secondary or tertiary alcohols in strongly acidic media known in the art.

The commonly used t-alkyl primary amines are often mixtures.

t-Octylamine having a branched structure has the following formula % formula %: The alkyl group of this amine is hereinafter referred to as t-octyl.

One form of t-nonylamine is C6H13C(CH3)2
and C7H15C(CH3)2NH2, and the neutral equivalent (neutral equivalent)
alent) has approximately 142.

Products that can be used in the present invention have the trademark Primene 81-
F of R can easily be used to convert t-dodecyl-1 into a mixture of monotridecyl and t-tetradecylamine, i.e. mainly t-C12H25NH2 to t-C1t-C14H2 with a neutral equivalent weight of about 191.
A trademark used for mixtures of amines.

Other products useful in this invention are under the trademark Primene JM-
Can be used under T.

PrimeneJM=T is mainly t-C18H3□NH2
or a mixture of t-c2□H45NH2 amine,
It has a neutral equivalent weight of about 315.

An important consideration is the NH in the L-alkyl primary amine.
Two groups are always bonded to a carbon atom that does not have a hydrogen atom, and in the present invention at least one of the alkyl groups is branched.

Alkylammonium carboxylate salts of trimer or dimer acids (or mixtures thereof) - ethoxylated alkylphenol esters are added or included primarily to provide rust and/or corrosion protection but also have some of the mildest vaporizer cleaning activity. has the following formula (II).

: where n is on average numerically from 1 to 12.5, preferably from about 3 to 10; in the case of salt-esters derived from trimer acids, X is 1 or 2; y is 1 or 2; and the sum with X is 3: in the case of a salt-ester derived from a dimer acid, X and y are both 1; R4 is an alkyl group containing 4-12 carbon atoms; R5 is H or an alkyl group containing 4-12 carbon atoms; R6 is an alkyl group containing 2-24 carbon atoms, which is straight-chain or branched or an alkyl group containing 2-24 carbon atoms; It can be an amine-substituted alkyl group of atoms.

Preferably R6 contains 12-22 carbon atoms and Z is a saturated or unsaturated hydrocarbon residue of an acid, said hydrocarbon residue containing 34-51 carbon atoms (Z is a trimer acid). In the case of dimer acids, they usually have 51 carbon atoms, and in the case of dimer acids, they usually have 34 carbon atoms.

) alkylammonium carboxylate salt-ester, i.e. component (2) can be used as an all trimer acid derivative or an all dimer acid derivative, or any mixture of dimer acid and trimer acid derivatives may be used in the present invention. obtain.

Also, the presence of some monocarboxylic C18 acids or analogs in the form of esters or salts, or mixtures of both ester and salt forms, may be tolerated in small amounts, about 5% or less.

Certain embodiments of the alkyl ammonium carboxylate salt-esters of general formula (3) above, in which R4 is virtually or substantially all octyl, i.e., -C8H1□, and R5 is H, can be used in the present invention as shown in Table 1. It will be done.

:Alkylammonium carboxylate salt esters are prepared by preparing a suitable dimer or trimer acid, or a mixture thereof, for example, in the case of a diester-mono salt, with 2 moles of a suitable ethoxylated alkylphenol, as is known.
It can be prepared by acid-catalyzed esterification followed by conversion of the remaining carboxylic acid functionality to an alkyl ammonium carboxylate salt with the addition of a suitable amine.

Trimer acids may be products derived from the trimerization reaction of C18 unsaturated fatty acids; examples of suitable trimer acids are those under the trademark E
It is available under mpol 1041.

The preparation of such dimer and trimer acids is described in U.S. Pat.
No. 32695.

The general reaction formula for the production of alkylammonium carboxylate salt-ester is shown below using trimer acid as an example.

: where n, R4, R5 and R6 have the values given above and C5° is the carbon atom content of the hydrocarbon residue.

Mixed polyesters of dimer or trimer acids, or mixtures of such dimer and trimer acids, are included in additives or additive combinations to provide intake system and combustion chamber deposit control.

Dimer and trimer acids as well as mixed polyesters can be prepared in a known manner.

For example, unsaturated aliphatic monocarboxylic acids having about 16 to 18 carbon atoms per molecule, such as linoleic acid, can be polymerized or condensed to form substantially dimers of linoleic acid, dicarboxylic acids; Trimers of linoleic acid can be polymerized to form tricarboxylic acids.

Mixtures of such dicarboxylic and tricarboxylic acids may also be formed.

Similarly, other C16 and C18 unsaturated aliphatic monocarboxylic acids, including ricinol and lylunic acid, can be polymerized to dimer and trimer acids or mixtures of such dimer and trimer acids.

The preparation of such dimer and trimer acids is described in U.S. Pat.
No. 32695.

The mixed polyesters used in this invention are prepared by reacting a mixture of fatty alcohols and ethoxylated aromatic alcohols with polycarboxylic acids in amounts suitable to esterify virtually all of the carboxyl groups in the acids.

Esterification is carried out by conventional known methods.

Fatty alcohols suitable for this purpose are preferably saturated fatty alcohols having about 1 to 24 carbon atoms.

Typical fatty alcohols include methyl alcohol, propyl alcohol, n-butyl alcohol, isodecyl alcohol, hexyl alcohol, 2-ethylhexyl alcohol, decyl alcohol, dodecyl alcohol, tridecyl alcohol, isodecyl alcohol, lauryl alcohol, stearyl alcohol, Includes hexadecyl alcohol and non-tesyl alcohol.

Preferably, the aromatic or aromatic-containing alcohol used is an alkylated phenol ethoxylated with variable amounts of alkylene oxide, such as ethylene oxide.

(These materials are commonly known as alkylphenoxypolyethoxyethanols).

The number of moles of ethylene oxide that can be condensed with the alkylated phenol can vary from about 1 to about 20 ethylene oxide units, preferably from about 1 to 4 moles of ethylene oxide.

Although the presence of some unchanged alcohol and some fully esterified all-aliphatic or all-ethoxylated aromatic ester will be present in the esterification mixture,
The primary active ingredient or primary active blend polyester has the following general formula:

: where n is on average numerically from 1 to 20, preferably from about 1 to about 4; in the case of mixed polyesters derived from nitrimeric acids, p is 1 or 2; and q is 1 or 2.
, the sum of p and q is 3; in the case of mixed esters derived from dimer acids, p and q are both 1; Zl
is a saturated or unsaturated hydrocarbon residue having an average of 34-51 carbon atoms, which residue is the residue of a dimer or trimer acid of linoleic acid or a mixture of dimers and trimers of linoleic acid: R7 is an alkyl group containing 4-12 carbon atoms, preferably 8 or 9 carbon atoms: R8 is H or 4-1
an alkyl group containing 2 carbon atoms, preferably H: R9 is an alkyl group containing 1-24 carbon atoms and may be straight-chain or branched.

The aromatic alkoxylated alkylphenol is preferably based on octyl or nonylphenol and contains about 1-
20 moles of ethylene oxide, preferably about 1=about 4
It can contain moles of condensed ethylene oxide.

Also, when based on the aforementioned mixtures of dimer and l-rimer acids, the mixed polyester is based on a mixture containing at least about 60%, and preferably at least 80%, trimer acids.

In the following examples illustrating the invention, all parts and percentages are by weight unless otherwise specified.

The ability of the additive or additive combination of the present invention to clean and maintain cleanliness of the carburetor of an internal combustion engine is illustrated, and the ability to remove or protect against deposit formation in the intake system is also illustrated.

Also illustrated is the additive's ability to reduce octane requirement growth in internal combustion engines.

Unless otherwise noted, MS-08 gasoline fuel was used for blow-by carburetor clean key-boo clean engine tests and Howell Unleaded Ga3oli
n is used for inhalation deposit testing.

Howell UnleadedGasolin has the following properties: H□well Unleaded
Ga3o1in: Fuel specifications EL72-1 Multi-purpose carburetor cleaner engine test evaluation A Blow-by carburetor clean Keep clean engine test ■ Engine test procedure Blow-by carburetor clean Keep clean engine test (
BBCDT-KC) measures the ability of gasoline additives to maintain cleanliness near the throttle body of the carburetor, and has a special “7
1970 equipped with two 1-barrel carburetors (which can be adjusted and boosted independently) with a ml intake manifold
Ford 351CID V-8: Performed on engine.

With this arrangement, a different test fuel can be evaluated in each carburetor, which is supplied to four of the eight cylinders via uninterconnected intake manifolds.

The carburetor is modified with a removable aluminum sleeve to allow weighing of deposits that have accumulated near the throttle body.

The severity of the test is approximately 90 = total amount of blow-by gas.
The 110 CFH is regulated to the proper level by circulating each vaporizer to the top of the air cleaner so that each vaporizer absorbs these gases equally.

Equal flow of intake mixture through each carburetor is regulated at the beginning of operation by means of intake manifold differential pressure and CO exhaust gas analysis.

Flow test cycles and operating conditions are used as follows.

: Test cycle: Weight of deposit accumulated on aluminum sleeve (
~) are measured and the average value of 4 tests per each additive or additive mixture is reported.

The gasoline used for the BBCDT-KC test is MS-08 gasoline with the following properties:

:B Intake System Deposit Engine Test 1 Engine Test Procedure The Intake System Deposit Test (ISDT), used to evaluate the ability of a gasoline additive or mixture of additives to control intake system deposits, consists of a fresh air cooled, single cylinder, 4 cycles, 2.5H1P, Br1qq
It is performed using a SAND 5trajtol engine.

The engine was run at 3000 rpm, 14.2 ft, and lb negative load for 150 hours, stopping for 1 hour every 10 hours to check the oil level.

Carbon monoxide exhaust emission measurements are made using constant air-to-fuel (A/F
) was performed each time to ensure that the ratio was maintained.

Upon completion of the test run, the engine will be partially disassembled, the intake valves and ports will be evaluated, and valve and port deposits will be collected and weighed.

C Rust Test Method The rust test method for suppressing rust of fuel additives is based on the military standard MIL-
I-25017C (Section 4, 6, 3) shall be used.

This procedure, which utilizes Type B intermediate hard water, is based on ASTM method D6.
This is a modification of 65.

The purpose of the test was to evaluate the ability of gasoline additives to inhibit rust on steel such as those encountered in gasoline storage and transportation systems.

The method involves heating a mixture of 300 ml of additive blend in Depolarized Isooctane and 30 ml of deionized distilled water, medium hard water, or synthetic seawater to 100°F (37.8°C).
This included stirring for 5 hours with a completely immersed cylindrical steel specimen at a temperature of .

Test results are reported as percent area rusted, and pitting is also optionally reported on a scale of 1-3, with 3 being the worst pitting and 0 being the best.

Type B intermediate hard water is prepared as follows. Using AC8 reagent grade chemicals, 16.4 g of NaHCO3/each in distilled water.
l, CaCl2・2H2013, 2g/l and MgS
3 stock solution containing O4.7H208, 2 g/l.

10 ml of NaHCO3 stock solution are pipetted into 800 ml of distilled water in an 11 volumetric flask and shaken vigorously.

While the flask contents are swirling, add CaCl2 stock solution 1
0 ml was put into the flask with a snake pet, then Mg
10 ml of SO4 stock solution is also pipetted into the flask, then distilled water is added to a volume of 11 and mixed thoroughly.

The final blend should be clear and free of sediment.

D Combustion Chamber Deposit Engine Test ■ Engine Test Procedure The Combustion Chamber Deposit Engine Test (CCDET) is used to evaluate the ability of an additive or additive mixture to control or increase the required octane increase in an internal combustion engine, and the test is performed on a two-barrel carburetor. 1 equipped with
972 Chevrolet 350 CI D V-8 Engine and 1972 Tubo Hydromatic
350 transmission coupled to a 1014-2WIG dynamometer equipped with 200.31b-ft2 inertia wheels.

The following test cycles and operating conditions were used and are intended to simulate an urban taxi.

Test cycle 2nd stage Acceleration - 1-2 knots, 5.5 seconds,
2900-3000 rpm 3rd stage acceleration-2-37t, 9.5 seconds,
2800-290 Orpm 4th stage 3rd gear, 10.0 seconds 2600
rpm 5th stage Deceleration to idle, 15.0 seconds test duration 200 hours fuel consumption 1000 gallons (H□well unleaded gasoline + additive treatment) Intake air, lower environment jacket water, 180 Engine oil dripping 220±10 Required octane number is measured at 24 hour intervals under the following engine conditions: Output shut speed controlled at 1500 rpm, engine throttle wide open and shifted to 3rd gear.

The required octane number of the engine is measured by the trace knock due to the primary reference funiel, i.e.
The engine is run through a series of blends of isooctane and n-hebutane of known octane numbers until an audible knock is observed.

The lowest standard octane blend that does not cause the engine to knock is recorded as the required octane number.

The required octane increase is therefore the difference between the initial and final octane requirements for a particular test.

The novel fuel compositions can be prepared by adding individual additives directly to the fuel, or additive blends or mixtures of one or more components can be prepared, or one or more additives can be prepared by adding toluene to the fuel. Alternatively, concentrates can be made in a suitable solvent such as xylene.

In addition, all additive components are normally liquid substances at room temperature,
They are mutually soluble or miscible and can be distributed without solvent.

The production of a typical blended polyester used in the fuel of the present invention is as follows.

Nitrimer acid, diisodecyl, monooctylphenoxypolyethoxyethanol (3 moles ethylene oxide)
Preparation of triestersDean with mechanical stirrer, thermometer and reflux condenser
- Trimer acid 70-80% and dimer acid 30-
Trimer acid mixture consisting of 2.0% (Emery In
industries 1834-18R trimer acid) 8
45g (1 mol), isodecyl alcohol 316@(2
mol), octylphenoxypolyethoxyethanol 331' containing about 3 mol of condensed ethylene oxide (
1 mol), 200 ml of toluene and 1.0 g of p-toluenesulfonic acid.

The reaction mixture was heated to reflux (under stirring) and it reached 135°C.
Happens nearby.

Refluxing is continued for 6 hours, during which time the stoichiometric amount of water is released.

The toluene solvent was stripped under vacuum and Na2CO3
3,0@ is added to neutralize p-toluenesulfonic acid,
The product is filtered.

Materials produced in this manner generally have acid numbers around 1.0.

The theoretical product distribution assuming that equilibrium is achieved and that there are no differences in free energy production between the various esters is:

:Actual analysis shows that diisodecyl monooctylphenoxypolyethoxyethanol ester is present in overwhelming percentages, and actual chromatographic analysis substantially matches the predicted amount.

Changes in the proportions of the ester components can be obtained by changing the esterification conditions.

The following Table 1 shows typical mixed polyesters prepared by the general method described above for use in the present invention.

The esterification reaction is usually acid catalyzed and can be carried out over a wide range of temperatures, but typically temperatures range from about 75°C to about 180°C.
It could be changed to

The mixture of fatty alcohol and ethoxylated aromatic alcohol can also vary widely depending on the desired product, but usually the ratio of fatty alcohol to ethoxylated aromatic alcohol is about 1:4 to about 4:1 (on a molar basis). ,
Desirably, the ratio may vary from about 1:2 to about 2:1.

The amount of mixed alcohol used should be sufficient to substantially completely esterify the polycarboxylic acid (i.e., trimer or dimer acid, or mixtures thereof), with no additional or A slight molar excess of alcohol can be used.

The base fuel used in the following examples (Tables ■, ■, and V) was Howell unleaded gasoline as described above, with BBCDT
- MS-C8 gasoline as described above is used in the KC test.

Inhalation System Deposit Test (ISDT) results are reported in milligrams (~) of deposit, as are blow-by carburetor clean keep clean engine test results.

Rust percentage is also reported.

These test procedures have been described above.

In Table 1, the results obtained with the additive combinations or mixtures according to the invention are shown.

As is clear from the data in Table 2, the blended polyesters of the present invention, although individually not providing carburetor cleaning activity by themselves, are very effective in controlling intake system deposits in internal combustion engines.

When blended polyesters are used in combination with rust inhibitors and carburetor cleaners as shown in Table ■ to form a multi-purpose additive package, three types of performance are achieved: rust inhibition, carburetor cleaners. , and inhaler clean, the activities of Examples 15, 16, and 19 are significantly better than the base fuel.

Although Examples 17, 18, 20, 21 and 22 exhibit higher inhalation system deposit levels than the base fuel, their combined performance is lower than that of the base fuel treated with currently used commercial additives such as alkylammonium phosphate and polybutene succinimide. Significantly better.

The fact that untreated gasoline is rarely used in today's automobiles and that gasoline treated with convenient carburetor cleaners and rust inhibitors is typically more expensive than base gasoline, as shown in Comparative Examples B and C in Table II. It is important to note that inhalation systems will give rise to deposit levels.

Although the activation mechanism is not clear, the additive combination of the present invention reduces the deposits in the combustion chamber so that the engine's required octane increase is less than untreated gasoline or bath gasoline treated with commercially used polybutene succinimide. It is clear from the data in Table V that it is effective in denaturing.

Vaporizer cleaner (1) and inhalation system deposit control additive (
3) has a total concentration of 350 ppm (1 is 50 ppm, 3
In a specific example of another embodiment of the invention used in gasoline (without additional rust inhibitor) at 300 ppm), the following results were obtained: 201 mg deposit for 15 DT test: 201 mg deposit for BBCDT-KC test. On the other hand, the deposit is 1.3mg.

In this test, component (1) was the t-C18-02□ alkylamine as used in Example 15, and component (3) was the mixed polyester of Example 4.

As mentioned before, Howell unleaded gasoline is 15D
MS-08 gasoline used for T test and BBCDT
-Used for KC test.

In other alternative embodiments of the present invention, other dicarboxylic acid esters, such as adipate diesters, may fully or partially replace component (3) of the above-described cleaning composition to provide inhalation system deposit control.

Thus, a mono-isodecyl, mono-octylphenoxypolyethoxyethanol (containing an average of 3 moles of condensed ethylene oxide) mixed ester prepared by a convenient acid esterification process of adipic acid gave the following results: 1
Deposit 160~ in 5DT test.

Other adipate esters, such as mixed C1-C2o alkyl/alkyl phenoxy (C4-C9 alkyl)
Polyethoxyethanol (condensed ethylene oxide 1-
Mixed adipate esters comprising esters containing 20 moles, preferably about 1-5 moles, may also be used alone or in combination with components (1) and (2) above to provide inhalation system deposit control.

Adipate ester can be added to gasoline alone or in combination with the above components (1)* and (2)*, and can be added to the above component (3).
used in similar amounts.

*Component (1) refers to a t-alkylamine (6-10 carbon atoms) vaporizer cleaner component, and component (2) refers to a surface-active alkyl ammonium carboxylate salt-ethoxylated alkylphenol ester rust-inhibiting component. (mentioned above).

The above specific mono-isodecyl, mono-octylphenoxypolyethquin ethanol (3 moles ethylene oxide) adipate ester 300 ppm t-Cl8-C
Other results when used in combination with 50 ppm of 2□alkylamine (component (1) above) are as follows: 15DT
Deposit 225 ~ for the test, and deposit 23 ~ for the BBCDT-KC test.

Rust-inhibiting component (2) of Example Flat 15 to obtain a three-component system
When 10 ppm is added to the above mixture of t-C18C22 alkylamine and adipate ester, the following results are obtained.

:15DT test deposit 327mg, BBCDT
- 2.2 mg deposit in the KC test and 0% rusted area in the rust test described above.

t-Cl8-C2□alkylamine (above component (1))
In another example using 50 ppm of the rust inhibitor of Example A15 and 300 ppm of mono-isodecyl, mono-octylphenoxypolyethoxyethanol (containing 5 moles of ethylene oxide) adipate ester.
The following results were obtained: Deposit 23 on 15DT test
7~, BBCDT-KC test deposit 3.5mg
and 0% rust area in rust test.

Claims (1)

[Claims] 1 Formula: [where n is an average number of about 1 to 20; p is 1 or 2, q is 1 or 2, and p is 1 or 2 in the case of a mixed polyester derived from trimer acid; The sum of an alkyl group with 12 carbon atoms, Ro is a straight-chain or branched alkyl group with 1 to 24 carbon atoms, and Zl is a saturated or unsaturated group with about 34 to 51 carbon atoms; hydrocarbon residues or saturated hydrocarbon residues having 4 carbon atoms] An additive for hydrocarbon fuels mainly containing hydrocarbon fuels in the gasoline distillation range, the active ingredient being a mixed polyester. 2 Formula: [where n is an average number of about 1 to 20; in the case of a mixed polyester derived from a trimer acid, is 1 or 2, q is 1 or 2, and the sum of p and q is 3 and in the case of mixed esters derived from dimer acids, p and q are both 1; R7 is an alkyl group having 4 to 12 carbon atoms, R8 is H or 4 to 12 carbon atoms. an alkyl group having 1 to 24 carbon atoms, Ro is a straight-chain or branched alkyl group having 1 to 24 carbon atoms, and zl
is a saturated or unsaturated hydrocarbon residue having about 34 to 51 carbon atoms or a saturated hydrocarbon residue having 4 carbon atoms] and about 100 to 650 parts by weight of a mixed polyester of about 20 to 250 parts by weight of a tertiary alkyl primary amine having a total of 6 to 24 carbon atoms. 3 Formula: [where n is an average number of about 1 to 20, p is 1 or 2, q is 1 or 2, and the sum of p and q is 3 in the case of a mixed polyester derived from a nitrimeric acid. and in the case of a mixed ester derived from a dimer acid, p and q are both 1, R7 is an alkyl group having 4 to 12 carbon atoms, and R8 is H or having 4 to 12 carbon atoms. The alkyl group R9 is a straight-chain or branched alkyl group having from 1 to 24 carbon atoms, and zl is a saturated or unsaturated hydrocarbon residue having about 34 to 51 carbon atoms or its about 100 to 650 parts by weight of a mixed polyester of saturated hydrocarbon residues having 4 carbon atoms and a tertiary alkyl primary amine having a total of 6 to 24 carbon atoms in the branched trunk about 20 to 250 parts by weight, and the formula: where n is an average number of 1 to 12.5, X is 1 or 2 in the case of a salt-ester derived from a trimer acid, and y
is 1 or 2, the sum of X and y is 3, and in the case of a salt-ester derived from a dimer acid, X and y are both 1; R4 has 4 to 12 carbon atoms. Alkyl group, R5 is H or an alkyl group having 4 to 12 carbon atoms, R6 is a straight or branched alkyl group having 2 to 24 carbon atoms or having 2 to 24 carbon atoms is an amine-substituted alkyl group; 2 is a saturated or unsaturated hydrocarbon residue having 34 to 51 carbon atoms. 100 parts by weight of hydrocarbon fuel additives, which are mainly hydrocarbon fuels in the gasoline distillation range.