EP0282845A1 - Combustibles contenant de petites quantités d'alcoxylate et d'imide d'acide polycarboxylique - Google Patents

Combustibles contenant de petites quantités d'alcoxylate et d'imide d'acide polycarboxylique Download PDF

Info

Publication number
EP0282845A1
EP0282845A1 EP88103420A EP88103420A EP0282845A1 EP 0282845 A1 EP0282845 A1 EP 0282845A1 EP 88103420 A EP88103420 A EP 88103420A EP 88103420 A EP88103420 A EP 88103420A EP 0282845 A1 EP0282845 A1 EP 0282845A1
Authority
EP
European Patent Office
Prior art keywords
oxide
valve
alkoxylates
fuels
engine
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP88103420A
Other languages
German (de)
English (en)
Other versions
EP0282845B1 (fr
Inventor
Hans-Henning Dr. Vogel
Hans Peter Dr. Rath
Knut Dr. Oppenlaender
Charalampos Dr. Gousetis
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BASF SE
Original Assignee
BASF SE
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by BASF SE filed Critical BASF SE
Publication of EP0282845A1 publication Critical patent/EP0282845A1/fr
Application granted granted Critical
Publication of EP0282845B1 publication Critical patent/EP0282845B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
    • C10L1/00—Liquid carbonaceous fuels
    • C10L1/10—Liquid carbonaceous fuels containing additives
    • C10L1/14—Organic compounds
    • C10L1/143—Organic compounds mixtures of organic macromolecular compounds with organic non-macromolecular compounds
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
    • C10L1/00—Liquid carbonaceous fuels
    • C10L1/10—Liquid carbonaceous fuels containing additives
    • C10L1/14—Organic compounds
    • C10L1/18—Organic compounds containing oxygen
    • C10L1/192—Macromolecular compounds
    • C10L1/198—Macromolecular compounds obtained otherwise than by reactions involving only carbon-to-carbon unsaturated bonds homo- or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon to carbon double bond, and at least one being terminated by an acyloxy radical of a saturated carboxylic acid, of carbonic acid
    • C10L1/1985—Macromolecular compounds obtained otherwise than by reactions involving only carbon-to-carbon unsaturated bonds homo- or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon to carbon double bond, and at least one being terminated by an acyloxy radical of a saturated carboxylic acid, of carbonic acid polyethers, e.g. di- polygylcols and derivatives; ethers - esters
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
    • C10L1/00—Liquid carbonaceous fuels
    • C10L1/10—Liquid carbonaceous fuels containing additives
    • C10L1/14—Organic compounds
    • C10L1/22—Organic compounds containing nitrogen
    • C10L1/222—Organic compounds containing nitrogen containing at least one carbon-to-nitrogen single bond
    • C10L1/224—Amides; Imides carboxylic acid amides, imides
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B3/00—Engines characterised by air compression and subsequent fuel addition
    • F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition

Definitions

  • the invention relates to fuels for gasoline and diesel engines containing an additive A) small amounts of alkoxylates obtained by alkoxylation of mono- or polyhydroxy compounds and B) small amounts of tri- or tetracarboxamides or -imides.
  • By returning these so-called “blow-by gases" to the intake part or the air filter part of the oil mist that is created in the crankcase is brought back into the engine via the intake system and largely burned there, but they are noticeable Oil mist also deposits in the interior of the carburetor, in the intake ducts, on the intake valves and on the injection nozzles.
  • High-performance carburettors are complex structures with very fine channels and bores and precisely calibrated nozzles for spraying and metering the fuel.
  • the ratio of carbon monoxide to carbon dioxide in the exhaust gases is adversely affected, i.e. higher amounts of carbon monoxide in the exhaust gas occur in the case of dirty injection units or intake systems.
  • the amount of additives (A) and (B) according to the invention added to petrol and diesel fuels is between 0.01 and 0.3% by weight, preferably between 0.005 and 0.15% by weight.
  • the weight ratio of components (A) and (B) is usually between 5: 1 to 1: 3.
  • Alkoxylates used are preferably butoxylates of mono- or polyhydroxy compounds or mixed alkoxylates using propylene / butylene mixed oxides.
  • the proportion of butylene oxide or longer-chain alkylene oxide in the mixed alkoxylate is responsible for the oil solubility or oil compatibility of the alkoxide.
  • the propylene oxide / butylene oxide ratio can be between 5:95 and 95: 5 parts by weight.
  • Advantageous mixtures contain propylene oxide / butylene oxide in a ratio of 60:40 to 30:70. In principle, all butylene oxides, i.e.
  • Butene-1, butene-2 or isobutene oxide or any mixtures of these oxides with one another or with propylene oxide are suitable for the preparation of the alkoxylates according to the invention.
  • Effective alkoxylates are likewise obtained from mixtures of propylene oxide, butylene oxide and higher open-chain and cyclic alkene oxides or from the higher open-chain and cyclic alkene oxides alone.
  • Examples include: pentene-1-oxide, decene-1-oxide, cyclopentene oxide, cyclohexene oxide and cyclooctene oxide and vinyl-cyclohexene oxides.
  • Alcohols of the general formula come as mono- or polyhydroxy compounds R (OH) n , in which n is the numbers 1 to 4 and R is a C1-C20 straight-chain or preferably branched alkane, into consideration.
  • Typical examples are butanol, isobutanol, 2-ethylhexanol, isononanol, isodekanol, isotridekanol, ethylene glycol, 1,2-propylene glycol, 1,3-propanediol, 1,2-butylene glycol, 1,4-butanediol, 1,5-pentanediol, neopentyl glycol , 1,6-hexanediol, trimethylolpropane, 1,2,4-butanediol and pentaerythritol.
  • the alkoxylates are prepared by the methods of the prior art, i.e.
  • a mono- or polyhydroxy compound is placed in a reactor together with the catalyst (e.g. sodium hydroxide, potassium hydroxide or alkali alcoholates) and gassed with alkylene oxides or alkylene oxide mixtures or reacted with liquid alkylene oxides with stirring at temperatures from 120 to 150 ° C.
  • the catalyst e.g. sodium hydroxide, potassium hydroxide or alkali alcoholates
  • any gaseous alkylene oxide which has not reacted is drawn off under vacuum and the crude alkoxylate is optionally washed with water largely free of alkali.
  • the alkaline catalyst e.g.
  • the alkoxylate when using potassium hydroxide, the alkoxylate can be washed with a sufficient amount of an aqueous solution of sodium pyrophosphate (Na2H2P4O7).
  • sodium potassium pyrophosphate precipitates as an insoluble double salt and can be filtered off.
  • alkoxylates to be used according to the invention it is not necessary to start from mixtures of the alkylene oxides in question in the case of mixed alkoxylates. It is also possible to react two or more alkylene oxides in succession with the mono- or polyhydroxy compound as the starting molecule. Alkoxylates, which are initially obtained by reacting mono- or polyhydroxy compounds only with a small amount of ethylene oxide (e.g. 1-5 mol ethylene oxide per hydroxyl group of the mono- or polyhydroxy compound), can also be obtained by subsequent reaction with a correspondingly large amount of higher alkylene oxides implement alkoxylates to be used according to the invention.
  • ethylene oxide e.g. 1-5 mol ethylene oxide per hydroxyl group of the mono- or polyhydroxy compound
  • Possible components (B) are, for example, reaction products of nitrogen-containing polycarboxylic acids with mono-, oligo- or polyamines or technical amine mixtures, such as are described, for example, as mixed components in EP-A-6527.
  • the compounds according to (B) of the formula I are prepared by methods known per se, for example by reacting nitrilotriacetic acid or ethylenediaminetetraacetic acid with the amines or amine mixtures R-NH2 obtained at temperatures of 150 to 220 ° C usually 160 to 200 ° C.
  • the amines are used in a molar ratio of 2: 1 (cyclic diimide) or in an amount of 3 moles of amine or amine mixture per mole of ethylenediaminetetraacetic acid (amine imide) or 2 moles per mole of nitriloacetic acid (amide imide) or To a small extent, additional amounts applied. In most cases, amidimides or imides are obtained in this way in addition to minor amounts of amides, ie substitution of all carbonyl groups by one amide residue.
  • the procedure is such that the amine or amine mixture is placed in a stirred vessel under a nitrogen atmosphere and the nitriloacetic acid or ethylenediaminetetraacetic acid is introduced at approximately 80 ° C. and the mixture is stirred at 160 to 200 ° C. for 4 to 10 hours, at slowly reacting amines or amine mixtures also heated to a higher temperature until the acid number is less than 10.
  • amines of the formula R-NH2 those with 7 to 18, preferably 8 to 14 carbon atoms are suitable. These amines can also have further amino groups, for example non-primary amino groups or alkoxy groups. Likewise, oxygen atoms can be present in the chain.
  • alkyl radicals can be interrupted by nitrogen or oxygen atoms: 2-ethylhexylamine, n-dodecylamine, n-tridecylamine, n-pentadecylamine, stearylamine, 2-amino-5-dimethylaminopentane and 1- (2-ethylhexoxy) -propylamine- (3).
  • Fuel additives using the alkoxylates (A) and the polycarboximides can additionally contain a number of other known active components, such as sterically hindered substituted phenols as antioxidants, dipropylene glycol or similarly designed glycols as antiicing additives to protect the carburetor from ice formation, corrosion inhibitors, metal deactivators, Demulsifiers and antistatic agents to increase the conductivity of the fuels.
  • active components such as sterically hindered substituted phenols as antioxidants, dipropylene glycol or similarly designed glycols as antiicing additives to protect the carburetor from ice formation, corrosion inhibitors, metal deactivators, Demulsifiers and antistatic agents to increase the conductivity of the fuels.
  • the results are evaluated as follows.
  • the new inlet valves are cleaned or degreased with solvent before the test and weighed exactly to three decimal places. At the end of the test, the valves are removed.
  • the stems or the valve tulips are assessed by checking the stickiness with finger pressure.
  • the valves, including the stems are then swung twice in n-heptane for 5 seconds and dried in air by swirling.
  • the valves are then mechanically freed from the combustion residues adhering to the underside of the tulip after clamping on the shafts in a horizontally mounted drilling machine with the help of a wood chip or sanding cloth with a grain size of 400 and then at three points behind exactly weighed the comma.
  • the Ab Bearings of all 4 valves are averaged and the result is given in mg / valve.
  • the carburettor is kept clean by evaluating the carburettor according to the CRC rating scale.
  • Carburetor contamination with non-additive fuels generally gives a rating of 6.5 to 8.5. If effective carburetor-cleaning additives are present, the rating after the end of the test is between 8.0 and 10.0.
  • the rating 10.0 corresponds to a completely clean carburetor.
  • Table 2 contains test results with fuels without the use of fuel additives (Ex. 1 to 3), as well as results of engine test runs using the components of the combination to be used according to the invention.
  • a Daimler-Benz M 102 electric engine was also used to check the cleanliness in the intake system.
  • Test procedure is similar to the Opel Kadett test, the test conditions are shown in the following list: Engine: 4-cylinder injection engine, 2.3 l displacement, 100 KW Engine oil: RL 51 or SAE 15W / 40, API-SF / CC Running time: 40 to 150 hours
  • Test program per cycle Stage 1: 30 s idling at 800 rpm
  • Stage 2 1 min at 3000 rpm 18.4
  • Stage 3 1 min at 1300 rpm 4.4 KW
  • Stage 4 2 min at 1750 rpm 7.4 KW Oil temperature in the oil pan 90 ⁇ 3 ° C
  • Coolant temperature (outlet) 89 ⁇ 3 ° C
  • valves are evaluated using the same method as for the Opel Kadett engine. Runtimes longer than 40 hours can also be selected to tighten the test conditions.
  • Table 3 shows some results for valve deposits of non-additive fuels in the Daimler-Benz M 102 electric motor. Each test run was carried out over a test period of 40 hours.
  • An additive mixture of the following composition was used: 24 parts by weight component F in Table 1 60 parts by weight of alkoxylate B in Table 1 16 parts by weight a high-boiling aromatic solvent (solvent naphtha with a boiling point of approx. 160 ° C, mainly consisting of C9 + aromatics, such as commercial products Solvesso 150 or Shellsol AB)
  • a high-boiling aromatic solvent solvent naphtha with a boiling point of approx. 160 ° C, mainly consisting of C9 + aromatics, such as commercial products Solvesso 150 or Shellsol AB
  • Valve deposit result 0 mg / valve Carburetor rating: Rating 9.9
  • the additive mixture was the same as that given in Example 14, but was tested in a Daimler-Benz M 102 E test engine.
  • valve deposits are 0 mg / valve and the carburetor rating is 9.4.
  • the engine is operated according to the same test cycle as the Daimler Benz M 102 electric motor.
  • the clean-up effect for the intake valves is evaluated after 40, 80, 120 or 200 hours; the evaluation is carried out in the same way as for the Opel Kadett and Daimler-Benz engines.
  • valve stickiness is checked visually.
  • the cylinder head is stored in an inclined position of approx. 45-60 ° with the intake valves still inside.
  • the inlet valves slip through their own weight in a very short time out of the valve guide.
  • Adhesive valves as a result of unsuitable fuel additives can be recognized by the fact that the inlet valves do not slide out of the guide due to their own weight or can only be moved out by mechanical assistance.
  • Test runs were carried out in the 1.6 t engine, type Opel Ascona, to test the valve stickiness. All tests were carried out over a period of 200 hours. This corresponds to a fuel consumption of approx. 2000 l and an approximate running distance of 4000-5000 km. The results are shown in Table 4.
  • Test conditions for testing valve stickiness in practical driving tests Engine: Volkswagen, boxer engine, 1.9 l displacement, 44 KW Driving program: 10 km with max. 50 km / h 10 km with max. 60 km / h 10 min standstill
  • the outside temperature during the night of the vehicle was between +3 and -3 ° C.
  • the temperatures in the engine compartment were between +3 and + 8 ° C the next morning before the measurement.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Solid Fuels And Fuel-Associated Substances (AREA)
  • Liquid Carbonaceous Fuels (AREA)
EP88103420A 1987-03-14 1988-03-05 Combustibles contenant de petites quantités d'alcoxylate et d'imide d'acide polycarboxylique Expired - Lifetime EP0282845B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19873708338 DE3708338A1 (de) 1987-03-14 1987-03-14 Kraftstoffe, enthaltend geringe mengen alkoxylate und polycarbonsaeureimide
DE3708338 1987-03-14

Publications (2)

Publication Number Publication Date
EP0282845A1 true EP0282845A1 (fr) 1988-09-21
EP0282845B1 EP0282845B1 (fr) 1992-06-10

Family

ID=6323088

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88103420A Expired - Lifetime EP0282845B1 (fr) 1987-03-14 1988-03-05 Combustibles contenant de petites quantités d'alcoxylate et d'imide d'acide polycarboxylique

Country Status (4)

Country Link
US (1) US4844714A (fr)
EP (1) EP0282845B1 (fr)
DE (2) DE3708338A1 (fr)
DK (1) DK132288A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0374461A1 (fr) * 1988-11-17 1990-06-27 BASF Aktiengesellschaft Combustibles pour machines à combustion

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7204863B2 (en) * 2001-12-11 2007-04-17 Exxonmobil Research And Engineering Company Gasoline additives for reducing the amount of internal combustion engine intake valve deposits and combustion chamber deposits
US7226489B2 (en) 2001-12-12 2007-06-05 Exxonmobil Research And Engineering Company Gasoline additives for reducing the amount of internal combustion engine intake valve deposits and combustion chamber deposits
MY155314A (en) * 2007-11-28 2015-09-30 Shell Int Research Gasoline compositions
US10457884B2 (en) 2013-11-18 2019-10-29 Afton Chemical Corporation Mixed detergent composition for intake valve deposit control
US10273425B2 (en) * 2017-03-13 2019-04-30 Afton Chemical Corporation Polyol carrier fluids and fuel compositions including polyol carrier fluids
US11873461B1 (en) 2022-09-22 2024-01-16 Afton Chemical Corporation Extreme pressure additives with improved copper corrosion
US11884890B1 (en) 2023-02-07 2024-01-30 Afton Chemical Corporation Gasoline additive composition for improved engine performance
US11795412B1 (en) 2023-03-03 2023-10-24 Afton Chemical Corporation Lubricating composition for industrial gear fluids

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2763537A (en) * 1949-05-24 1956-09-18 California Research Corp Diesel fuel oil
US2841479A (en) * 1954-05-28 1958-07-01 Dow Chemical Co Glycerol triether lubricant compositions
US2938777A (en) * 1956-04-19 1960-05-31 Tidewater Oil Company Gasoline fuel composition
US3030939A (en) * 1958-07-10 1962-04-24 Standard Oil Co Method of operating spark-ignition combustion engine
US3838992A (en) * 1971-02-22 1974-10-01 Universal Oil Prod Co Synergistic anti-icing composition
US3901665A (en) * 1972-10-06 1975-08-26 Du Pont Multi-functional fuel additive compositions
EP0006527A1 (fr) * 1978-06-26 1980-01-09 BASF Aktiengesellschaft Carburants pour moteurs à carburateur contenant un mélange d'additifs
EP0110003A2 (fr) * 1982-12-01 1984-06-13 The Dow Chemical Company Additif anti-nébulisation pour fluides hydrocarbonés
GB2143846A (en) * 1983-07-25 1985-02-20 Shell Int Research A diesel fuel based on methanol and/or ethanol
EP0144922A2 (fr) * 1983-12-03 1985-06-19 Mineralölwerke Wenzel und Weidmann Zweigniederlassung der Fuchs Mineralölwerke GmbH, Mannheim Lubrifiant
US4548616A (en) * 1984-06-14 1985-10-22 Texaco Inc. Gasoline containing as additive poly(oxyethylene) poly(oxypropylene) poly(oxyethylene) polyol to reduce octane requirement increase
EP0061895B1 (fr) * 1981-03-31 1986-03-05 Exxon Research And Engineering Company Additif pour améliorer l'écoulement des carburants distillés et leurs concentrats

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4659338A (en) * 1985-08-16 1987-04-21 The Lubrizol Corporation Fuel compositions for lessening valve seat recession

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2763537A (en) * 1949-05-24 1956-09-18 California Research Corp Diesel fuel oil
US2841479A (en) * 1954-05-28 1958-07-01 Dow Chemical Co Glycerol triether lubricant compositions
US2938777A (en) * 1956-04-19 1960-05-31 Tidewater Oil Company Gasoline fuel composition
US3030939A (en) * 1958-07-10 1962-04-24 Standard Oil Co Method of operating spark-ignition combustion engine
US3838992A (en) * 1971-02-22 1974-10-01 Universal Oil Prod Co Synergistic anti-icing composition
US3901665A (en) * 1972-10-06 1975-08-26 Du Pont Multi-functional fuel additive compositions
EP0006527A1 (fr) * 1978-06-26 1980-01-09 BASF Aktiengesellschaft Carburants pour moteurs à carburateur contenant un mélange d'additifs
EP0061895B1 (fr) * 1981-03-31 1986-03-05 Exxon Research And Engineering Company Additif pour améliorer l'écoulement des carburants distillés et leurs concentrats
EP0110003A2 (fr) * 1982-12-01 1984-06-13 The Dow Chemical Company Additif anti-nébulisation pour fluides hydrocarbonés
GB2143846A (en) * 1983-07-25 1985-02-20 Shell Int Research A diesel fuel based on methanol and/or ethanol
EP0144922A2 (fr) * 1983-12-03 1985-06-19 Mineralölwerke Wenzel und Weidmann Zweigniederlassung der Fuchs Mineralölwerke GmbH, Mannheim Lubrifiant
US4548616A (en) * 1984-06-14 1985-10-22 Texaco Inc. Gasoline containing as additive poly(oxyethylene) poly(oxypropylene) poly(oxyethylene) polyol to reduce octane requirement increase

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0374461A1 (fr) * 1988-11-17 1990-06-27 BASF Aktiengesellschaft Combustibles pour machines à combustion

Also Published As

Publication number Publication date
DK132288A (da) 1988-09-15
DE3871828D1 (de) 1992-07-16
US4844714A (en) 1989-07-04
DE3708338A1 (de) 1988-09-22
DK132288D0 (da) 1988-03-11
EP0282845B1 (fr) 1992-06-10

Similar Documents

Publication Publication Date Title
EP0374461B1 (fr) Combustibles pour machines à combustion
EP0464489B1 (fr) Carburants contenant un ester, pour moteurs diesel et à allumage par étincelle
EP0548617B1 (fr) Carburants pour moteurs à allumage par étincelle
EP0639632B1 (fr) Utilisation d'un additif pour combustibles sans plomb pour moteurs à combustion interne à allumage commandé pour réduire l'érosion du siège de soupape.
DD254954A5 (de) Kraftstoffgemisch und verfahren zum betrieb eines fremdzeunduengsverbrennungsmotor
EP0282845B1 (fr) Combustibles contenant de petites quantités d'alcoxylate et d'imide d'acide polycarboxylique
DE3814601A1 (de) Detergenz fuer kohlenwasserstoff-brennstoffe
DE2232099C3 (de) Schmiermittelpräparate für Zweitaktmotoren
EP0489322A2 (fr) Polyétherdiamines alkoxylés, procédé pour leur préparation et carburants pour moteurs à allumage par étincelle contenant ceux-ci
DE2555921C2 (de) Mehrzweckzusatzmischung für Benzin und eine sie enthaltende Kraftstoffmischung
EP0006527B1 (fr) Carburants pour moteurs à carburateur contenant un mélange d'additifs
DE69115894T2 (de) Motorbrennstoffzusatzmittelzusammensetzung und methode zu ihrer herstellung
DE2112321C2 (de) Amingemische enthaltende Benzinzubereitung
DE2531469C3 (de) Verwendung von w -N.N.N'.N'tetrasubstituierten Aminoalkansäureamiden, w -N,N,N',N'tetrasubstituierte Aminobuttersäure-amide und Verfahren zu deren Herstellung
EP0543225A1 (fr) Carbamates, leur procédé de préparation, et combustibles et lubrifiants contenants ces carbamates
DE2102559A1 (de) Neue Imidverbindungen, Verfahren zu deren Herstellung, sowie ihre Anwendung als Kraftstoffzusatzmittel
DE2624630A1 (de) Kraftstoffzusaetze fuer ottomotoren
DE2610798A1 (de) Treibstoffe fuer ottomotoren
DE2645235A1 (de) Treibstoffe fuer ottomotoren
DE1957487C (de) Vergaser Kraftstoff
DE1008958B (de) Treibstoffe fuer Verbrennungskraftmaschinen
DE2144199C3 (de) Treibstoffe für Ottomotoren
DE1957487A1 (de) Vergaserkraftstoff
EP0484736A1 (fr) Combustibles pour moteurs à allumage par étincelle
DE1957487B (de) Vergaser Kraftstoff

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): BE DE FR GB IT NL

17P Request for examination filed

Effective date: 19880727

17Q First examination report despatched

Effective date: 19910408

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): BE DE FR GB IT NL

ITF It: translation for a ep patent filed

Owner name: ING. C. GREGORJ S.P.A.

REF Corresponds to:

Ref document number: 3871828

Country of ref document: DE

Date of ref document: 19920716

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19960223

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 19960229

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19960301

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 19960313

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19960326

Year of fee payment: 9

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Effective date: 19970305

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19970312

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Effective date: 19970331

BERE Be: lapsed

Owner name: BASF A.G.

Effective date: 19970331

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Effective date: 19971001

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19970305

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19971128

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee

Effective date: 19971001

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20050305