CN87104997A - Inhibiter and novel fuel composition - Google Patents

Inhibiter and novel fuel composition Download PDF

Info

Publication number
CN87104997A
CN87104997A CN198787104997A CN87104997A CN87104997A CN 87104997 A CN87104997 A CN 87104997A CN 198787104997 A CN198787104997 A CN 198787104997A CN 87104997 A CN87104997 A CN 87104997A CN 87104997 A CN87104997 A CN 87104997A
Authority
CN
China
Prior art keywords
alcohol
corrosion inhibitor
composite corrosion
fuel
volume
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.)
Pending
Application number
CN198787104997A
Other languages
Chinese (zh)
Inventor
查理斯·沃格特林
汉斯·斯蒂特勒
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.)
Union Rheinische Braunkohlen Kraftstoff AG
Original Assignee
Union Rheinische Braunkohlen Kraftstoff AG
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 Union Rheinische Braunkohlen Kraftstoff AG filed Critical Union Rheinische Braunkohlen Kraftstoff AG
Publication of CN87104997A publication Critical patent/CN87104997A/en
Pending 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
    • C10L10/00—Use of additives to fuels or fires for particular purposes
    • C10L10/04—Use of additives to fuels or fires for particular purposes for minimising corrosion or incrustation
    • 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
    • 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
    • C10L1/12—Inorganic compounds
    • C10L1/1291—Silicon and boron containing 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
    • C10L1/182—Organic compounds containing oxygen containing hydroxy groups; Salts thereof
    • C10L1/1822—Organic compounds containing oxygen containing hydroxy groups; Salts thereof hydroxy group directly attached to (cyclo)aliphatic carbon atoms
    • C10L1/1824—Organic compounds containing oxygen containing hydroxy groups; Salts thereof hydroxy group directly attached to (cyclo)aliphatic carbon atoms mono-hydroxy
    • 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
    • C10L1/2222—(cyclo)aliphatic amines; polyamines (no macromolecular substituent 30C); quaternair ammonium compounds; carbamates
    • 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
    • C10L1/232—Organic compounds containing nitrogen containing nitrogen in a heterocyclic ring

Landscapes

  • Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Preventing Corrosion Or Incrustation Of Metals (AREA)
  • Liquid Carbonaceous Fuels (AREA)
  • Anti-Oxidant Or Stabilizer Compositions (AREA)
  • Lubricants (AREA)

Abstract

The present invention relates to a kind of novel corrosion inhibitors and novel motor fuels mixture.

Description

The present invention relates to a kind of novel corrosion inhibitors and novel motor fuels mixture.
Those skilled in the art know that the mixture of gasoline and alcohol can be used as the fuel of oil engine, particularly car combustion engine.For example, suitable fuel can be by the 80-99%(by volume) gasoline (hydro carbons) and 20-1%(by volume) alcohol, as methyl alcohol and (or) the ethanol composition.
It also is possible making fuel with mixture, and it mainly comprises alcohol, for example methyl alcohol and can contain by volume up to 40%() hydro carbons.
This mixture only contains less water (1.5-4%) usually.Yet such alcohols and but cause etching problem with the mixture of hydro carbons is for example containing iron, zinc, and magnesium, in the part of aluminium and other non-ferrous metal, particularly at oil engine, the etching problem in the part of oil pump or fuel reserve tank.This problem at least can be partly causes owing to the transmission of the carboxylic acid that is generated in alcohol.
Known according to DE-OS3433554, but some phosphoric acid ester mitigate corrosion used.Yet these ester classes can not be used to have the automobile of exhaust catalyst.
Therefore, for pure fuel requirement inhibiter is arranged, this inhibiter is not phosphorous and can prevent the corrosion of oil engine.
Have now found that, be used for the inhibiter of phosphorated alcohol fuel not contain benzotriazole and (or) its derivative and tolytriazole and (or) mixture of its derivative, heptonic acid boron sodium and primary amine and (or) the alkylene oxide affixture of secondary amine.
In addition this mixture preferably also contain 1,2 ethylene glycol and (or) methyl alcohol and (or) composition such as ethanol, yet according to the present invention, other monohydroxy-alcohol, dibasic alcohol and polyvalent alcohol, for example C 1-C 20Alcohol, propylene glycol, butyleneglycol, glycerol and other alcohols also can exist.
For example Shi Yi alkylene oxide is an oxyethane, propylene oxide or its mixture.
A kind of preferred amine be can with the amino propylamine of the fat of the reacting ethylene oxide of 25-30 mole, yet according to the present invention, other primary amine and secondary amine are also suitable fully, the amine of long-chain particularly, diamines and polyamines, they also can be side chains.
Typical inhibiter of the present invention contains for example benzotriazole and tolytriazole, heptonic acid boron sodium, with primary amine and (or) the ethene affixture of secondary amine and 1,2 ethylene glycol and methyl alcohol and (or) ethanol is as solvent.
These inhibiter are dissolved in pure fuel fully and have preservative activity, it can with contain phosphor corrosion inhibitor than beautiful, surpass even and contain phosphor corrosion inhibitor.
Especially they are applicable to the automobile with exhaust catalyst fully.The typical fuel that for example contains inhibiter of the present invention is the 80%(by volume) hydro carbons, the 1-10%(by volume) ethanol, the 1-10%(by volume) methyl alcohol and 1-10%(by volume) the mixture of butanols.
In addition, this fuel can be by about 80-90%(volume) methyl alcohol and the hydro carbons of (or) ethanol and about 1-20%(volume) formed also can contain 50-500ppm(based on alcohol moiety) the inhibiter according to claim 1-8, or this fuel can be by about 80-99%(volume) at least two kinds of C 1-C 18Pure and mild about 1-20%(volume) hydro carbons form and can contain 50-500ppm(based on alcohol moiety) the inhibiter according to claim 1-8.
With composite corrosion inhibitor with 50-500ppm(based on alcohol moiety) amount, preferably with the amount of 50-300ppm, best amount with 60-120ppm joins in this fuel.
The exemplary composition of inhibiter of the present invention is made up of following composite reactive component: benzotriazole derivatives and tolytriazole derivative, its amount is respectively 10-15%(weight), heptonic acid boron sodium, its amount is 5-6%(weight), the affixture (every mole of amine contains the 25-30 moles of ethylene oxide) of the amino propylamine of oxyethane and fat, this affixture also can be used as dispersion agent, its amount is 3-12%(weight), with the 1,2 ethylene glycol that can be used as solvent, its amount is 35-45%(weight).These components dissolve in for example methyl alcohol or ethanol, and the result forms 60-65%(weight in alcohol) the typical solution of each component.Other ratio of each component or other concentration in alcohol also are effective according to the present invention.
The various compositions of inhibiter can be mixed simply.
In order in only small amount of methanol or ethanol, to obtain the clear and bright solution of active ingredient, be preferably under the not enforceable condition, at first dissolve.Can only dissolve the mixture (for example 8 parts and 2 parts) of part benzotriazole and tolytriazole, part heptonic acid boron sodium (4 parts) and 1,2-ethylidene glycol (30 parts), methyl alcohol or ethanol (30 parts), then the amino propylamine of fat is added in this stock blend, add a certain amount of triazole and heptonic acid boron salt at last again, 1,2 ethylene glycol and methyl alcohol or ethanol obtain required concentration.
Embodiment 1
Stock blend is by 30g1, the 2-ethylidene glycol, and 4g heptonic acid boron sodium, the thick methyl alcohol of 30g, 8g benzotriazole and 2g tolytriazole are formed.
Affixture (28 moles oxyethane) chemical combination with this mixture of 8g and 2g oxyethane and the amino propylamine of fat.
Inhibiter comprises:
20%(weight) said mixture
11%(weight) benzotriazole
4.5%(weight) heptonic acid boron sodium
32%(weight) 1,2 ethylene glycol
32.5%(weight) methyl alcohol (water: 1.5-4%)
Embodiment 2
The ethylene oxide adduct of 3g embodiment 1 is mixed with the stock blend of 7g embodiment 1.
Inhibiter comprises:
30%(weight) said mixture
9.5%(weight) benzotriazole
4%(weight) heptonic acid boron sodium
28%(weight) 1,2 ethylene glycol
28.4%(weight) methyl alcohol (water: 1.5-4%)
Embodiment 3
Stock blend is by the 35g propylene glycol, 5g heptonic acid boron sodium, and 30g ethanol, amino benzotriazole of 8g5-and 3g tolytriazole are formed.
Affixture (25 mole alkylene oxide hydrocarbon) chemical combination with this stock blend of 8g and 2g oxyethane/propylene oxide and the amino propylamine of fat.
Inhibiter comprises:
22%(weight) said mixture
11%(weight) benzotriazole
4%(weight) heptonic acid boron sodium
32%(weight) propylene glycol
31%(weight) ethanol
Embodiment 4
The affixture of 2.5g oxyethane and 1 is joined in the stock blend of 8g embodiment 1.
20%(weight) this mixture is the composition as the inhibiter of embodiment 1.
Embodiment 5
Inhibiter is corresponding to embodiment 4.But affixture is made up of the propylene oxide of stearylamine and 26 moles.
Fuel mixture:
Typical fuel mixture comprises (in volume percent):
The hydro carbons of 1.89-90%
5% ethanol (96%+ water)
3% methyl alcohol (99.5-97.2%+ water)
2% the trimethyl carbinol
The inhibiter of＜1% embodiment 1-5 (is that benchmark is 300ppm with alcohol)
2. about 90% methyl alcohol (pure)
About 10% C 4-C 7Hydro carbons
The inhibiter of the embodiment 1-5 of 100ppm
3. about 85% methyl alcohol (pure)
About 15% premium
The inhibiter of the embodiment 1-5 of 350ppm
4. about 75% methyl alcohol (slightly)
About 10% ethanol
About 15% premium
The inhibiter of the embodiment 1-5 of 150ppm
5. about 75% methyl alcohol (pure)
About 10% C 2-C 8Alcohol
About 15% hydro carbons
The inhibiter of 80ppm embodiment 1-5
These fuel mixtures are tested about 1 year in the pilot scale of motor vehicle test fleet.
Do not observe the corrosion of engine.

Claims (13)

1, a kind of composite corrosion inhibitor, said composition contain benzotriazole and (or) its derivative and tolytriazole and (or) mixture of its derivative, heptonic acid boron sodium and primary amine and (or) the alkylene oxide affixture of secondary amine.
2, the composite corrosion inhibitor that is used for fuel according to claim 1, it is characterized in that this mixture also contain monohydroxy-alcohol and (or) dibasic alcohol and (or) polyvalent alcohol.
3, according to claim 1 and 2 described fuel composite corrosion inhibitors, said composition contains the mixture of benzotriazole and tolytriazole, heptonic acid boron sodium, primary amine and (or) ethylene oxide adduct of secondary amine, 1,2 ethylene glycol and methyl alcohol and (or) ethanol.
4, according to the composite corrosion inhibitor of claim 1-3, it is characterized in that benzotriazole and (or) its derivative and tolytriazole and (or) mixture content of its derivative be 10-15%(weight).
5, according to the composite corrosion inhibitor of claim 1-4, it is characterized in that heptonic acid boron sodium content is a 5-6%(weight).
6, according to the composite corrosion inhibitor of claim 1-5, it is characterized in that the ethylene oxide adduct content of the amino propylamine of fat is 3-12%(weight).
7, according to the composite corrosion inhibitor of claim 1-6, it is characterized in that 1,2 ethylene glycol content is 35-45%(weight).
8, according to the composite corrosion inhibitor of claim 1-7, the solubilization of active ingredient that it is characterized in that claim 1 1,2 ethylene glycol and (or) methyl alcohol and (or) in the ethanol.
9, the production method of the composite corrosion inhibitor used of fuel, it is characterized in that benzotriazole, tolytriazole, heptonic acid boron sodium and 1, the 2-ethylidene glycol be dissolved in methyl alcohol and (or) in the ethanol, and add the 1,2 ethylene glycol affixture of the amino propylamine of fat and add the part active ingredient again and methyl alcohol and (or) ethanol.
10, the fuel used of oil engine, this fuel contains the composite corrosion inhibitor of alcohol or alcohol/hydrocarbon mixture and claim 1-8.
11, according to the combustion engine fuel of claim 10, it is characterized in that this fuel contains the 80%(volume of having an appointment) hydro carbons, the 1-10%(volume) ethanol, 1-10%(volume) methyl alcohol and 1-10%(volume) the trimethyl carbinol and 50-300ppm(based on alcohol moiety) the composite corrosion inhibitor of claim 1-8.
12,, it is characterized in that this fuel contains the 80-99(volume of having an appointment according to the combustion engine fuel of claim 10) methyl alcohol and the hydro carbons of (or) ethanol and about 1-20%(volume) and 50-500ppm(based on alcohol moiety) the composite corrosion inhibitor of claim 1-8.
13,, it is characterized in that this fuel contains the 80-99%(volume of having an appointment according to the combustion engine fuel of claim 10) at least by two kinds of C 1-C 18The alcohol mixture that fatty alcohol is formed and about 1-20%(volume) hydro carbons and 50-500ppm(based on alcohol moiety) the composite corrosion inhibitor of claim 1-8.
CN198787104997A 1986-07-22 1987-07-22 Inhibiter and novel fuel composition Pending CN87104997A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19863624767 DE3624767A1 (en) 1986-07-22 1986-07-22 CORROSION INHIBITOR FOR FUELS
DEP3624767.7 1986-07-22

Publications (1)

Publication Number Publication Date
CN87104997A true CN87104997A (en) 1988-11-30

Family

ID=6305718

Family Applications (1)

Application Number Title Priority Date Filing Date
CN198787104997A Pending CN87104997A (en) 1986-07-22 1987-07-22 Inhibiter and novel fuel composition

Country Status (12)

Country Link
EP (1) EP0263925A1 (en)
JP (1) JPS6366291A (en)
CN (1) CN87104997A (en)
AU (1) AU7598887A (en)
DD (1) DD261371A5 (en)
DE (1) DE3624767A1 (en)
DK (1) DK380987A (en)
ES (1) ES2002250A4 (en)
GR (1) GR880300061T1 (en)
NO (1) NO873027L (en)
NZ (1) NZ221139A (en)
ZA (1) ZA875282B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110066694A (en) * 2019-05-23 2019-07-30 金玖洲新能源有限公司 A kind of clean fuel and preparation method thereof

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3724181A1 (en) * 1987-07-22 1989-02-16 Sandoz Ag Corrosion inhibitor for fuels
CA2773679C (en) * 2009-10-14 2018-07-10 Palox Limited Protection of liquid fuels

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2759021A (en) * 1951-01-19 1956-08-14 Armour & Co Substituted trimethylene diamines
BE571591A (en) * 1958-05-30
US3092475A (en) * 1958-12-22 1963-06-04 Sinclair Research Inc Fuel composition
US3574577A (en) * 1968-05-22 1971-04-13 Texaco Inc Method of preventing ice formation in a jet engine
GB1387134A (en) * 1971-07-15 1975-03-12 Mobil Oil Corp Fuel and lubricant compositions
GB1457204A (en) * 1973-04-28 1976-12-01 Basf Ag Hydrocarbon fuels for internal combustion engines
GB1588067A (en) * 1977-10-13 1981-04-15 Lubrizol Corp Lubricants and fuels and concentrates containing demulsifier additive compositions
US4518395A (en) * 1982-09-21 1985-05-21 Nuodex Inc. Process for the stabilization of metal-containing hydrocarbon fuel compositions
US4595523A (en) * 1983-07-01 1986-06-17 Petrolite Corporation Corrosion inhibition in engine fuel systems
DE3433554A1 (en) * 1983-09-24 1985-04-11 Sandoz-Patent-GmbH, 7850 Lörrach Fuels for internal combustion engines
CA1263913A (en) * 1984-06-13 1989-12-19 Gordon G. Knapp Corrosion inhibitors for alcohol-based fuels

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110066694A (en) * 2019-05-23 2019-07-30 金玖洲新能源有限公司 A kind of clean fuel and preparation method thereof

Also Published As

Publication number Publication date
DD261371A5 (en) 1988-10-26
JPS6366291A (en) 1988-03-24
DK380987D0 (en) 1987-07-21
ZA875282B (en) 1988-03-30
ES2002250A4 (en) 1988-08-01
DK380987A (en) 1988-01-23
EP0263925A1 (en) 1988-04-20
DE3624767A1 (en) 1988-06-01
NZ221139A (en) 1989-07-27
GR880300061T1 (en) 1988-10-18
NO873027L (en) 1988-01-25
NO873027D0 (en) 1987-07-20
AU7598887A (en) 1988-01-28

Similar Documents

Publication Publication Date Title
US9447351B2 (en) Composition and method to improve the fuel economy of hydrocarbon fueled internal combustion engines
CN1384862A (en) Antifreeze concentrates on the basis of dicarboxylic acids, molbdate and triazoles or thiazoles and coolant compositions containing these concentrates
EP0303862B1 (en) Additive composition
CN1009660B (en) Improved compositions of dispersing additives of lubricants and preparation
CN1522289A (en) Monocarboxylic acid based antifreeze composition
EP1728847A2 (en) Process for increasing the oxidative stability of biodiesel.
FR2686346A1 (en) ANTIFREEZE AND AQUEOUS FLUID COMPOSITION.
CN1744247A (en) Aluminium electrolytic capacitor working electrolyte and capacitor obtained thereof
CN1564856A (en) Corrosion inhibiting compositions and methods for fuel cell coolant systems
CN1256400C (en) Engine cooling liquid
CN1912078A (en) A method of reducing piston deposits, smoke or wear in a diesel engine
CN101486940A (en) Methanol fuel additive for diesel engine and methanol fuel containing the same for diesel engine
CN87104997A (en) Inhibiter and novel fuel composition
CN1759165A (en) Dot 4 brake fluids
JP3001679B2 (en) Lubricating oil composition for two-stroke engine or rotary engine
CN1037276C (en) Method for preparing borate-type hydraulic-brake liquor for car
CN1928033A (en) Methanol modifier and application thereof
US6123742A (en) Fuel additive
CN1923980A (en) Light hydrocarbon modifier and application thereof
CN1108683A (en) Compound additive for gasoline
US20030196371A1 (en) Method of reducing smoke and particulate emissions from spark-ignited reciprocating engines operating on liquid petroleum fuels
CN101649230A (en) Metal inhibiter of methanol gasoline
CN115304485B (en) Oil product rust-proof additive, preparation method thereof and oil product composition
CN1256408C (en) Condensed emulsified diesel and its preparation method and application
CN1633491A (en) Aqueous coolant for the running-in period of an engine containing ammonium salts of monophthalimides

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination