CN1087667A - A kind of metal corrosion inhibitor for alcohol fuel - Google Patents
A kind of metal corrosion inhibitor for alcohol fuel Download PDFInfo
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- CN1087667A CN1087667A CN 92113238 CN92113238A CN1087667A CN 1087667 A CN1087667 A CN 1087667A CN 92113238 CN92113238 CN 92113238 CN 92113238 A CN92113238 A CN 92113238A CN 1087667 A CN1087667 A CN 1087667A
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- corrosion inhibitor
- solution
- benzotriazole
- thinner
- inhibitor
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- Preventing Corrosion Or Incrustation Of Metals (AREA)
Abstract
A kind of metal corrosion inhibitor for alcohol fuel, it is to be formed through the dilution blending by benzotriazole, linoleic acid dimer corrosion inhibitor and Hinered phenols antioxidant.This composite inhibitor is used for alcohol fuel can suppress multiple corrosion of metal effectively.
Description
The invention belongs to a kind of compound corrosion inhibitor, more particularly, the present invention relates to a kind of metal corrosion inhibitor that is used for pure fuel that mixes by a certain percentage by three kinds of compounds, in use contact the metallic corrosion problem of bringing with metal parts to solve pure fuel.
Alcohol fuel is that the alcohols of its important component is the polarity thing, has high water absorbability by alcohols and hydro carbons blended automobile fuel by a certain percentage, and in preparation process, alcohol contains a spot of organic acid, also can form organic acid because of oxidation in storing and using.The existence of these acidic substance is directed at the corrosion of metal parts in the fuel system, influences the performance and the life-span of engine.Therefore, metal corrosion inhibitor is to use the requisite important additives of pure fuel.
Alcohol fuel metal inhibitor existing introduction in some patents.USP4,376,635 patents propose by the reaction product of benzotriazole, aldehydes or ketones and the N-alkyl propylene diamine metal corrosion inhibitor as pure fuel.USP4,445,907 patents introduced a kind of by
With the amide reaction product of amino tetrazole metal corrosion inhibitor as pure fuel.USP4, the corrosion inhibitor that 511,367 patents propose is by organic acid and N(2-hydroxyethyl) substituted imidazole that obtains of Edamine dehydration and the composition of alkenyl succinic acid.
The metal corrosion inhibitor that above-mentioned patent proposes, or be that starting raw material obtains one-component through chemical reaction with the nitrogen heterocyclic ring, or it is compound with compound that is easy to get such as organic acid again to prepare required nitrogen heterocyclic ring through chemical reaction.These corrosion inhibitors demonstrate the corrosion of iron and steel and suppress effect preferably, but pure fuel in use will contact with multiple metal such as red copper, brass, aluminium, zinc, iron etc., therefore the use range of the metal corrosion inhibitor that provides of above-mentioned patent will be restricted, and above-mentioned corrosion inhibitor all needs to make through secondary reaction, and this just exists operational difficulty, expensive shortcoming.
The objective of the invention is to overcome the deficiency of prior art, propose that a kind of raw material is easy to get, compound metal corrosion inhibitor easy to use, caused multiple metallic corrosion demonstrates and suppresses effect preferably to pure fuel.
Another object of the present invention provides the preparation method of corrosion inhibitor.
Composition metal corrosion inhibitor of the present invention is to be combined by benzotriazole, linoleic acid dimer corrosion inhibitor and hindered phenol antioxygen, its weight ratio: benzotriazole, linoleic acid dimer corrosion inhibitor are respectively 15～20%, 30～40%, hindered phenol antioxygen is 0-5%, and surplus is a thinner.
Metal corrosion inhibitor of the present invention can take following any method to make:
First method: with benzotriazole, hindered phenol and thinner 40～60 ℃ of following stirring and dissolving, obtain transparent solution-I; With above-mentioned same condition linoleic acid dimer is dissolved in the thinner, obtains uniform solution-II; Solution-I and solution-II are mixed, stirred 0.5～1 hour down at 30～50 ℃, the brown viscous liquid that obtains homogeneous transparent is product of the present invention.
Second method: under 40～60 ℃, benzotriazole is dissolved in the thinner, and stirred 1～2 hour, obtain water white solution-I; With above-mentioned same condition, hindered phenol and linoleic acid dimer be dissolved in obtain uniform solution-II in the thinner; Solution-I and solution-II are mixed, stirred 0.5～1 hour down at 30～50 ℃, the thick liquid that obtains homogeneous transparent is product of the present invention.
The third method: benzotriazole, linoleic acid dimer, hindered phenol and thinner are mixed by a certain percentage, keep 40～60 ℃ of also continuous stirrings and make its dissolving, the brown viscous liquid that obtains homogeneous transparent is product of the present invention.
Described benzotriazole comprises hydroxyl class and triazole, benzotriazole.The benzotriazole structural formula:
It is to be produced by Jinling Petrochemical Co. Ning Jiang chemical plant.
Described linoleic acid dimer, its structural formula is:
It is that Mudanjiang detergents and cosmetic factory produces.Linoleic acid dimer is a kind of brown flowable thick liquid, and tasteless, nontoxic, nothing corrosion is nonflammable, dissolves in mineral oil and all kinds of SOLVENTS.
Above-mentioned two kinds of components can suppress the corrosion of different metal respectively.
Described hindered phenol antioxygen comprises 2,6 ditertiary butyl p cresol, 2,6-di-t-butyl mixed phenol.Example of the present invention used 2,6-di-t-butyl mixed phenol is to be produced 2 by Beijing Chemical Factory No. 3.The 6-ditertbutylparacresol is by Jinzhou petroleum chemical plant production.Hindered phenol is a kind of oil product oxidation inhibitor, and it is rotten to suppress pure fuel oxidation.
Described thinner comprises the low-carbon alcohol of propyl carbinol.Used propyl carbinol is that the Beijing Chemical Plant produces in the example of the present invention.
Metal corrosion inhibitor of the present invention can be used for alcohol fuel, is specially adapted to contain methanol fuel.At alcohol: gasoline is that the addition of inhibitor is 100～300mg/l alcohol fuel, preferably 150～250mg/l alcohol fuel in 70～90: 30～10 the pure fuel.
The present invention compared with prior art has following advantage:
The present invention combines with the formation that reduces corrosive medium to metallic corrosion and the pure fuel oxidation of inhibition suppressing pure fuel, the metal corrosion inhibitor of three component composite additives as pure fuel proposed, wherein benzotriazole solubility property in polar solvent is good, to metal particularly non-ferrous metal have and suppress corrosive effect preferably, and solubility property is poor in non-polar solvent; The oil soluble of linoleic acid dimer is good, ferrous metal is had suppress corrosive power preferably especially.Alcohol fuel is the propellant combination of alcohols polar solvent and nonpolar gasoline, the dissolving power of benzotriazole and linoleic acid dimer requires different to polarity of solvent, but can dissolve fully in pure fuel and different metal is had the different effects of corrosion inhibition.The application of oxidation inhibitor hindered phenol type, it is rotten to suppress pure fuel oxidation, reduce the corrosive medium rate of growth, therefore, metal corrosion inhibitor preservative effect of the present invention is obvious, suppresses pure fuel effectively to multiple corrosions of metal such as brass, red copper, aluminium, 45# steel, zinc, shows that through long-term actual road test the metallic surface is good in fuel path and the vaporizer, keep metalluster, do not see corrosion phenomenon.Metal corrosion inhibitor raw material of the present invention is easy to get, and preparation is simple, no sulphur, phosphorus, and toxicity is little, and is easy to use, and car tail-gas catalytic purifier is had no adverse effects.
Further describe characteristics of the present invention with example below.
Example 1～2
In proportion benzotriazole, 2,6 ditertiary butyl p cresol are stirred down at 40 ℃, 60 ℃ respectively, it is dissolved in the propyl carbinol thinner, obtain the solution I.In another container, with same condition linoleic acid dimer is dissolved in the propyl carbinol, obtain the solution II.Solution I and solution II are mixed, stirred 1 hour, 0.5 hour down at 30 ℃, 50 ℃ respectively, obtain product A and B, its composition, performance see Table 1.
Example 3～4
Benzotriazole is dissolved in the propyl carbinol in proportion, and stirred 2 hours, 1 hour down at 40 ℃, 60 ℃ respectively, obtain the solution I; In another container with similarity condition with 2,6-ditertbutylparacresol (example 3) or 2,6-di-t-butyl mixed phenol (example 4) and linoleic acid dimer are dissolved in the propyl carbinol, obtain the solution II: solution I and solution II are mixed, stirred 1 hour, 0.5 hour down at 30 ℃, 50 ℃ respectively, obtain products C and D, its composition, performance see Table 1.
Example 5
With benzotriazole, linoleic acid dimer, 2,6 ditertiary butyl p cresol, propyl carbinol are mixed in proportion, and constantly stirring makes its dissolving, obtains product E, and its composition, performance see Table 1.
Claims (8)
1, a kind of metal corrosion inhibitor for alcohol fuel, it is characterized in that it is made up of benzotriazole, linoleic acid dimer corrosion inhibitor and hindered phenol antioxygen, its weight ratio is: benzotriazole and linoleic acid dimer corrosion inhibitor are respectively 15～20%, 30～40%, hindered phenol antioxygen is 0～5%, and surplus is a thinner.
2, a kind of method for preparing the metal corrosion inhibitor of claim 1, it is characterized in that benzotriazole, hindered phenol and thinner 40～60 ℃ of following stirring and dissolving, obtain the solution I, with same condition linoleic acid dimer is dissolved in the thinner, obtain the solution II, solution I and solution II are mixed, stirred 0.5～1 hour down, obtain required product at 30～50 ℃.
3, a kind of method for preparing the metal corrosion inhibitor of claim 1, it is characterized in that under 40～60 ℃, benzotriazole being dissolved in the thinner, and stirred 1～2 hour, obtain the solution I, with same condition hindered phenol and linoleic acid dimer are dissolved in and obtain the solution II in the thinner, solution I and solution II are mixed, stirred 0.5～1 hour down, obtain required product at 30～50 ℃.
4, a kind of method for preparing the metal corrosion inhibitor of claim 1 is characterized in that benzotriazole, linoleic acid dimer, hindered phenol and thinner are mixed in proportion, and keeps 40～60 ℃, and constantly stirring makes its dissolving can obtain required product.
5,, it is characterized in that described benzotriazole corrosion inhibitor comprises benzotriazole, hydroxy benzo triazole according to described any inhibitor of claim 1 to 4 and preparation method thereof.
6,, it is characterized in that described hindered phenol antioxygen comprises 2,6 ditertiary butyl p cresol, 2,6-di-t-butyl mixed phenol according to described any inhibitor of claim 1 to 4 and preparation method thereof.
7,, it is characterized in that described thinner comprises the low-carbon alcohol of propyl carbinol according to described any inhibitor of claim 1 to 4 and preparation method thereof.
8, according to the described inhibitor of claim 1, it is characterized in that it is used for alcohol: gasoline is that the addition of 70～90: 30～10 pure fuel is 100～300mg/l alcohol fuel, preferably 150～250mg/l alcohol fuel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92113238 CN1035825C (en) | 1992-12-02 | 1992-12-02 | Metal corrosion inhibitor for alcohol fuel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92113238 CN1035825C (en) | 1992-12-02 | 1992-12-02 | Metal corrosion inhibitor for alcohol fuel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1087667A true CN1087667A (en) | 1994-06-08 |
| CN1035825C CN1035825C (en) | 1997-09-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92113238 Expired - Lifetime CN1035825C (en) | 1992-12-02 | 1992-12-02 | Metal corrosion inhibitor for alcohol fuel |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1793427B (en) * | 2005-12-30 | 2012-01-18 | 徐鹏 | Multifunctional solid metallic antirust material and production process thereof |
| CN102559334A (en) * | 2011-12-14 | 2012-07-11 | 山西华顿实业有限公司 | Corrosion inhibitor for alcohol ether fuel and preparation method for corrosion inhibitor |
| CN103525482A (en) * | 2013-10-31 | 2014-01-22 | 上海化工研究院 | Alcohol ether alternative fuel metal component corrosion inhibitor for vehicle and method for preparing same |
| CN114276842A (en) * | 2021-12-17 | 2022-04-05 | 新乡市瑞丰新材料股份有限公司 | Ethanol gasoline polymetallic organic acid corrosion inhibitor and preparation method thereof |
-
1992
- 1992-12-02 CN CN 92113238 patent/CN1035825C/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1793427B (en) * | 2005-12-30 | 2012-01-18 | 徐鹏 | Multifunctional solid metallic antirust material and production process thereof |
| CN102559334A (en) * | 2011-12-14 | 2012-07-11 | 山西华顿实业有限公司 | Corrosion inhibitor for alcohol ether fuel and preparation method for corrosion inhibitor |
| CN102559334B (en) * | 2011-12-14 | 2013-10-23 | 山西华顿实业有限公司 | Corrosion inhibitor for alcohol ether fuel and preparation method for corrosion inhibitor |
| CN103525482A (en) * | 2013-10-31 | 2014-01-22 | 上海化工研究院 | Alcohol ether alternative fuel metal component corrosion inhibitor for vehicle and method for preparing same |
| CN103525482B (en) * | 2013-10-31 | 2015-08-19 | 上海化工研究院 | Alcohol ether alternative fuel metal component corrosion inhibitor for vehicle and preparation method thereof |
| CN114276842A (en) * | 2021-12-17 | 2022-04-05 | 新乡市瑞丰新材料股份有限公司 | Ethanol gasoline polymetallic organic acid corrosion inhibitor and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1035825C (en) | 1997-09-10 |
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| C15 | Extension of patent right duration from 15 to 20 years for appl. with date before 31.12.1992 and still valid on 11.12.2001 (patent law change 1993) | ||
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