CN105753786A - Preparation method of metal corrosion inhibitor - Google Patents
Preparation method of metal corrosion inhibitor Download PDFInfo
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- CN105753786A CN105753786A CN201410779709.6A CN201410779709A CN105753786A CN 105753786 A CN105753786 A CN 105753786A CN 201410779709 A CN201410779709 A CN 201410779709A CN 105753786 A CN105753786 A CN 105753786A
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- 229910052751 metal Inorganic materials 0.000 title claims abstract description 39
- 239000002184 metal Substances 0.000 title claims abstract description 39
- 239000003112 inhibitor Substances 0.000 title claims abstract description 38
- 238000002360 preparation method Methods 0.000 title claims abstract description 22
- 238000005260 corrosion Methods 0.000 title abstract description 27
- 230000007797 corrosion Effects 0.000 title abstract description 26
- 239000000376 reactant Substances 0.000 claims abstract description 37
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 32
- 238000006243 chemical reaction Methods 0.000 claims abstract description 24
- 239000000203 mixture Substances 0.000 claims abstract description 9
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 claims abstract description 7
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 claims abstract description 5
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 claims description 14
- -1 hydroxyl thiazolinyl Chemical group 0.000 claims description 14
- 239000004615 ingredient Substances 0.000 claims description 7
- 239000003350 kerosene Substances 0.000 claims description 7
- 239000002904 solvent Substances 0.000 claims description 6
- 125000002769 thiazolinyl group Chemical group 0.000 claims description 6
- JNBVLGDICHLLTN-DZUOILHNSA-N (2s)-2-acetamido-n-[(2s,3s)-4-[[[(2s)-2-acetamido-3-methylbutanoyl]amino]-(cyclohexylmethyl)amino]-3-hydroxy-1-phenylbutan-2-yl]-3-methylbutanamide Chemical compound C([C@H](NC(=O)[C@@H](NC(C)=O)C(C)C)[C@@H](O)CN(CC1CCCCC1)NC(=O)[C@@H](NC(C)=O)C(C)C)C1=CC=CC=C1 JNBVLGDICHLLTN-DZUOILHNSA-N 0.000 claims description 2
- 125000002877 alkyl aryl group Chemical group 0.000 claims description 2
- 125000000217 alkyl group Chemical group 0.000 claims description 2
- 125000003118 aryl group Chemical group 0.000 claims description 2
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 claims description 2
- 125000000753 cycloalkyl group Chemical group 0.000 claims description 2
- 230000005764 inhibitory process Effects 0.000 abstract description 13
- 230000006378 damage Effects 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 3
- TVDSBUOJIPERQY-UHFFFAOYSA-N prop-2-yn-1-ol Chemical compound OCC#C TVDSBUOJIPERQY-UHFFFAOYSA-N 0.000 abstract description 3
- 239000007795 chemical reaction product Substances 0.000 abstract 2
- 241000282414 Homo sapiens Species 0.000 abstract 1
- 150000001412 amines Chemical class 0.000 abstract 1
- 150000001732 carboxylic acid derivatives Chemical class 0.000 abstract 1
- 231100000614 poison Toxicity 0.000 abstract 1
- 239000003440 toxic substance Substances 0.000 abstract 1
- 239000000047 product Substances 0.000 description 13
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 8
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 7
- 229910002092 carbon dioxide Inorganic materials 0.000 description 7
- 239000000126 substance Substances 0.000 description 7
- 239000002253 acid Substances 0.000 description 5
- 229910000975 Carbon steel Inorganic materials 0.000 description 4
- 239000010962 carbon steel Substances 0.000 description 4
- 229910052757 nitrogen Inorganic materials 0.000 description 4
- UORVCLMRJXCDCP-UHFFFAOYSA-N propynoic acid Chemical compound OC(=O)C#C UORVCLMRJXCDCP-UHFFFAOYSA-N 0.000 description 4
- WRIDQFICGBMAFQ-UHFFFAOYSA-N (E)-8-Octadecenoic acid Natural products CCCCCCCCCC=CCCCCCCC(O)=O WRIDQFICGBMAFQ-UHFFFAOYSA-N 0.000 description 3
- LQJBNNIYVWPHFW-UHFFFAOYSA-N 20:1omega9c fatty acid Natural products CCCCCCCCCCC=CCCCCCCCC(O)=O LQJBNNIYVWPHFW-UHFFFAOYSA-N 0.000 description 3
- QSBYPNXLFMSGKH-UHFFFAOYSA-N 9-Heptadecensaeure Natural products CCCCCCCC=CCCCCCCCC(O)=O QSBYPNXLFMSGKH-UHFFFAOYSA-N 0.000 description 3
- 239000005642 Oleic acid Substances 0.000 description 3
- ZQPPMHVWECSIRJ-UHFFFAOYSA-N Oleic acid Natural products CCCCCCCCC=CCCCCCCCC(O)=O ZQPPMHVWECSIRJ-UHFFFAOYSA-N 0.000 description 3
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 3
- 208000027418 Wounds and injury Diseases 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 3
- 238000000862 absorption spectrum Methods 0.000 description 3
- MTNDZQHUAFNZQY-UHFFFAOYSA-N imidazoline Chemical compound C1CN=CN1 MTNDZQHUAFNZQY-UHFFFAOYSA-N 0.000 description 3
- 208000014674 injury Diseases 0.000 description 3
- QXJSBBXBKPUZAA-UHFFFAOYSA-N isooleic acid Natural products CCCCCCCC=CCCCCCCCCC(O)=O QXJSBBXBKPUZAA-UHFFFAOYSA-N 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000000116 mitigating effect Effects 0.000 description 3
- ZQPPMHVWECSIRJ-KTKRTIGZSA-N oleic acid Chemical compound CCCCCCCC\C=C/CCCCCCCC(O)=O ZQPPMHVWECSIRJ-KTKRTIGZSA-N 0.000 description 3
- 238000010992 reflux Methods 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- RPNUMPOLZDHAAY-UHFFFAOYSA-N Diethylenetriamine Chemical compound NCCNCCN RPNUMPOLZDHAAY-UHFFFAOYSA-N 0.000 description 2
- 125000000304 alkynyl group Chemical group 0.000 description 2
- 239000006227 byproduct Substances 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 239000011203 carbon fibre reinforced carbon Substances 0.000 description 2
- 239000004359 castor oil Substances 0.000 description 2
- 235000019438 castor oil Nutrition 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- FMVJYQGSRWVMQV-UHFFFAOYSA-N ethyl propiolate Chemical compound CCOC(=O)C#C FMVJYQGSRWVMQV-UHFFFAOYSA-N 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- ZEMPKEQAKRGZGQ-XOQCFJPHSA-N glycerol triricinoleate Natural products CCCCCC[C@@H](O)CC=CCCCCCCCC(=O)OC[C@@H](COC(=O)CCCCCCCC=CC[C@@H](O)CCCCCC)OC(=O)CCCCCCCC=CC[C@H](O)CCCCCC ZEMPKEQAKRGZGQ-XOQCFJPHSA-N 0.000 description 2
- 231100000086 high toxicity Toxicity 0.000 description 2
- 125000002636 imidazolinyl group Chemical group 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000001473 noxious effect Effects 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- JQZGUQIEPRIDMR-UHFFFAOYSA-N 3-methylbut-1-yn-1-ol Chemical compound CC(C)C#CO JQZGUQIEPRIDMR-UHFFFAOYSA-N 0.000 description 1
- 241001597008 Nomeidae Species 0.000 description 1
- HSFWRNGVRCDJHI-UHFFFAOYSA-N alpha-acetylene Natural products C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 description 1
- 125000003368 amide group Chemical group 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- JUWXVJKQNKKRLD-UHFFFAOYSA-N dec-3-yne Chemical compound CCCCCCC#CCC JUWXVJKQNKKRLD-UHFFFAOYSA-N 0.000 description 1
- 235000014113 dietary fatty acids Nutrition 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- DNJIEGIFACGWOD-UHFFFAOYSA-N ethanethiol Chemical group CCS DNJIEGIFACGWOD-UHFFFAOYSA-N 0.000 description 1
- 239000000194 fatty acid Substances 0.000 description 1
- 229930195729 fatty acid Natural products 0.000 description 1
- 150000004665 fatty acids Chemical class 0.000 description 1
- 239000010685 fatty oil Substances 0.000 description 1
- MLRKYSNODSLPAB-UHFFFAOYSA-N hex-1-yn-1-ol Chemical compound CCCCC#CO MLRKYSNODSLPAB-UHFFFAOYSA-N 0.000 description 1
- 150000002462 imidazolines Chemical class 0.000 description 1
- 238000002329 infrared spectrum Methods 0.000 description 1
- QXLPXWSKPNOQLE-UHFFFAOYSA-N methylpentynol Chemical compound CCC(C)(O)C#C QXLPXWSKPNOQLE-UHFFFAOYSA-N 0.000 description 1
- 229960002238 methylpentynol Drugs 0.000 description 1
- 238000007086 side reaction Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
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- Preventing Corrosion Or Incrustation Of Metals (AREA)
Abstract
The invention provides a preparation method of a metal corrosion inhibitor. The preparation method comprises the following steps: (1) reacting specific amine serving as a reactant A with specific carboxylic acid serving as a reactant B at 180-260 ℃, and removing generated water in time in the reaction process to obtain a reaction product of the step (1), wherein the molar ratio of the reactant A to the reactant B to the generated water of the step (1) is (0.8-1.2): 1: (1.5-2); (2) reacting the reaction product obtained in the step (1) with a reactant C at 60-160 ℃, and removing generated R in time in the reaction process1OH to obtain a mixture containing the effective components of the metal corrosion inhibitor, a reactant C, a reactant A and R generated in the step (2)1The molar ratio of OH is (0.8-1.2): (m + 1): [ (0.7 to 1) (m +1)]M is an integer of 0 to 5, R1Is H, methyl or ethyl. The invention provides a preparation method of a metal corrosion inhibitor, which does not contain propiolic alcohol toxic substances with great harm to human beings and the environment and aims at H2S and CO2The corrosion environment also has excellent corrosion inhibition effect.
Description
Technical field
The preparation method that the present invention relates to a kind of metal inhibitor.
Background technology
The compound that end contains acetylene bond particularly propilolic alcohol and derivant thereof are widely used among metal erosion protection owing to it has excellent corrosion inhibition, common are propilolic alcohol (be called for short P), methyl butynol (being called for short MB), methylparafynol (being called for short MP), hexynol (being called for short H), 3,6-dimethyl-4-octyne-3,6-glycol (be called for short S82), 2,5-dimethyl-3-hexin-2,5-glycol (be called for short S62), ethyl octyne alcohol (being called for short EO), 2,4,7,9-tetramethyl-5-decine-4,7-glycol (is called for short S104).But, owing to alkynol compound is generally of high toxicity, in using at the scene, personnel and environment can be brought injury.
In the prior art, propilolic alcohol is composite in imidazolines as synergist, and in this, as anti-CO2Corrosion inhibiter is applied among the corrosion protection of carbon dioxide gas field hardware (see patent documentation CN1277240A).But this corrosion inhibiter component still contains 5-15% propilolic alcohol, there is stench and high toxicity, and just for containing CO2Corrosive environment, be not for containing H2S+CO2Corrosive environment.
Summary of the invention
Goal of the invention
The preparation method that it is an object of the invention to provide a kind of metal inhibitor, gained metal inhibitor, without the propiolic alcohol noxious substance that the mankind and environment have huge injury, is simultaneous for H2S+CO2Corrosive environment has excellent corrosion mitigating effect.
Summary of the invention
The preparation method of described metal inhibitor comprises the following steps:
(1) reactant A and reactant B is made to react at 180～260 DEG C, course of reaction removes water in time that generate, obtaining the product of step (1), it is (0.8～1.2) that reactant A, reactant B and step (1) generate the mol ratio of water: 1:(1.5～2)；
(2) product making step (1) is reacted at 60～160 DEG C with reactant C, removes the R generated in course of reaction in time1OH, obtains the mixture containing metal inhibitor effective ingredient, and reactant C, reactant A and step (2) generate R1The mol ratio of OH is (0.8～1.2): (m+1): [(0.7～1) (m+1)],
Wherein,
R is the alkyl of C6～C20, cycloalkyl, aryl, alkylaryl, thiazolinyl or hydroxyl thiazolinyl, it is preferred to the thiazolinyl of C6～C20 or hydroxyl thiazolinyl, more preferably the thiazolinyl of C15～C20 or hydroxyl thiazolinyl, it is most preferred that for CH3(CH2)5CH(OH)CH2CH=CH (CH2)7Or CH3(CH2)7CH=CH (CH2)7；
M is the integer of 0-5, for instance m is 0 or 1 or 2 or 3 or 4 or 5,
R1For H, methyl or ethyl.
The dominant response occurred in preparation method of the present invention is as follows:
(1) organic carboxyl acid (reactant B) generates imidazoline (structure is as Suo Shi (II)) with alkenyl amine (reactant A) chemical combination；
(2) imidazoline and acetylenecarboxylic acid compound (reactant C) react generation acetylenecarboxylic acid imidazoline amide (structure is as Suo Shi (I)).
In the mixture containing metal inhibitor effective ingredient that preparation method of the present invention obtains, acetylenecarboxylic acid imidazoline amide is primary product, by-product be mainly be formed without imidazoline ring amide, there is no complete amidated imidazoline and partially polymerized acetylenecarboxylic acid.The generation of side reaction can reduce water and R1The growing amount of OH, therefore, from water and R1The growing amount of OH, it is possible to qualitatively judge the yield of primary product acetylenecarboxylic acid imidazoline amide.Primary product acetylenecarboxylic acid imidazoline amide is metal inhibitor effective ingredient, simultaneously, the corrosion inhibition of product can't be played obvious negative effect by the existence of by-product, after therefore obtaining reactant mixture by above-mentioned steps, it is not necessary to purifies and namely can be directly used in metal inhibitor.
Preferably,
The reaction condition of step (1) is: reaction temperature is 210～230 DEG C, and it is (0.95～1.05) that reactant A, reactant B and step (1) generate the mol ratio of water: 1:(1.95～2)；
The reaction condition of step (2) is:
R1During for H, reaction temperature is 150～160 DEG C, and reactant C, reactant A and step (2) generate R1The mol ratio of OH is (0.95～1.05): (m+1): [(0.95～1) (m+1)]；
R1During for methyl or ethyl, reaction temperature is 110～120 DEG C, and reactant C, reactant A and step (2) generate R1The mol ratio of OH is (0.95～1.05): (m+1): [(0.95～1) (m+1)].
Preferably, step (1) response time is 2.5～3.5 hours, more preferably 2.9～3.1 hours, and step (2) response time is 1.5～2.5 hours, more preferably 1.9～2.1 hours.
Step (1), (2) all generate lower boiling water or R1OH, carries out to promote to react completely, it is necessary to take measures to remove water or the R that reaction generates in time in course of reaction1OH, described measure is this area routine techniques means, for instance conventional having is passed into nitrogen and taken away water or the R of generation by water knockout drum1OH。
The preparation method of described metal inhibitor also can comprise the following steps according to application needs:
(3) by the described mixture containing metal inhibitor effective ingredient and solvent mix homogeneously, metal inhibitor is obtained.Described solvent adopts solvent commonly used in the art, such as kerosene and/or isopropanol.
The metal inhibitor effective ingredient acetylenecarboxylic acid imidazoline amide that preparation method of the present invention obtains is the new molecular architecture containing alkynyl and imidazoline group, without the propiolic alcohol noxious substance that the mankind and environment have huge injury, gained metal inhibitor is for H simultaneously2S+CO2Corrosive environment has excellent corrosion mitigating effect, is meeting 20# carbon steel and BG95SS carbon steel material surface corrosion inhibition rate >=90% of GB-8163 standard.
Accompanying drawing explanation
Fig. 1 is the infrared absorption spectra of embodiment 1 products therefrom.
Detailed description of the invention
Manufacturer and the purity of the chemical substance related in following example are as follows:
Oleic acid: Sichuan Sipo Chemical Industry Co., Ltd., acid number: 198, described acid number refers to and neutralizes the weight (milligram number) of potassium hydroxide needed for the free fatty contained in fat, fatty oil or other similar substances 1 gram；
Castor oil acid: Lu Ke chemical industry Co., Ltd, content of fatty acid: 95.0%；
Diethylenetriamine: Langfang Tuo Di Chemical Co., Ltd., content: 98.0%；
TEPA: Langfang Tuo Di Chemical Co., Ltd., content: 90.4%；
Acetylenecarboxylic acid: Jinan Gu Ruite Chemical Co., Ltd., content: 95.0%；
Ethyl propiolate: Jinan Gu Ruite Chemical Co., Ltd., content: 95.0%；
Kerosene: Chengdu Long March chemical reagents corporation, content 98%；
Isopropanol: Chengdu Long March chemical reagents corporation, content 98%.
Above-mentioned content is mass percentage content.
The method of testing related in following example is as follows:
Infrared absorption spectra uses ThermofisherNICOLETIS10 type infrared spectrometer, adopts KBr pressed disc method to record；
Measuring the corrosion inhibition of metal inhibitor according to standard oil Gas Industry standard SY/T5273-2000 " oil field extracted water corrosion inhibiter method of evaluating performance ", draw corrosion rate and corrosion inhibition rate, wherein the unit of corrosion rate is millimeter/year (mm/a).
Embodiment 1:
A four-neck flask with agitator, thermometer and water knockout drum (water knockout drum arm is connected with reflux condensing tube) is separately added into 1 mole of industrial oleic acid and 1 mole of diethylenetriamine.Heat while stirring to 220 DEG C, and pass into nitrogen (purity: 99.99%, following example with) water that reaction generates is separated by water knockout drum.Keep temperature 220 DEG C to react 3 hours, now react the water about separating 2 moles.After it is cooled to 160 DEG C, adding the acetylenecarboxylic acid of 1 mole, and react 2 hours, separate stopped reaction during 1 mole of water, collect final reacting product in flask, its infrared spectrum is as shown in Figure 1.1610cm in figure-1Peak is imidazoline characteristic absorption peak, 1665cm-1For amido link characteristic absorption peak；Alkynyl characteristic absorption peak is at 2100cm-1Left and right, owing to triple carbon-carbon bonds electronic effect is relatively strong, is little to be detected in infrared absorption spectra.Amplify this Figure 21 00cm-1Left and right wavelength, it can be seen that have a little projection, for triple carbon-carbon bonds absworption peak.
It is made into metal inhibitor by following mass percent, wherein contains: 30% final reacting product, 65% kerosene, 5% isopropanol, kerosene and isopropanol are solvent.Metal inhibitor corrosion inhibition appreciation condition and result are in Table 1.
The corrosion inhibition appreciation condition of table 1 embodiment 1 and result
Embodiment 2:
A four-neck flask with agitator, thermometer and water knockout drum (water knockout drum arm is connected with reflux condensing tube) is separately added into 1 mole of industrial oleic acid and 1 mole of TEPA.Heat while stirring to 220 DEG C, and pass into nitrogen by reaction generate water separated by water knockout drum.Keep temperature 220 DEG C to react 3 hours, now react the water about separating 2 moles.After it is cooled to 160 DEG C, in flask, adds the acetylenecarboxylic acid of 3 moles, and react 2 hours, separate stopped reaction during 3 moles of water, collect final reacting product.
It is made into metal inhibitor by following mass percent, wherein contains: 30% final reacting product, 65% kerosene, 5% isopropanol.Metal inhibitor corrosion inhibition appreciation condition and result are in Table 2.
The corrosion inhibition appreciation condition of table 2 embodiment 2 and result
Embodiment 3:
A four-neck flask with agitator, thermometer and water knockout drum (water knockout drum arm is connected with reflux condensing tube) is separately added into 1 mole of industrial castor oil acid and 1 mole of TEPA.Heat while stirring to 220 DEG C, and pass into nitrogen by reaction generate water separated by water knockout drum.Keep temperature 220 DEG C to react 3 hours, now react the water about separating 2 moles.After it is cooled to 120 DEG C, in flask, adds the ethyl propiolate of 3 moles, and react 2 hours, separate stopped reaction during ethanol 3 moles, collect final reacting product.
It is made into metal inhibitor by following mass percent, wherein contains: 30% final reacting product, 65% kerosene, 5% isopropanol.Metal inhibitor corrosion inhibition appreciation condition and result are in Table 3.
The corrosion inhibition appreciation condition of table 3 embodiment 3 and result
From the above it can be seen that utilize the preparation method of the present invention and the metal inhibitor that obtains, for H2S+CO2Corrosive environment has excellent corrosion mitigating effect, is meeting 20# carbon steel and BG95SS carbon steel material surface corrosion inhibition rate >=90% of GB-8163 standard.
Claims (9)
1. the preparation method of a metal inhibitor, it is characterised in that comprise the steps:
(1) reactant A and reactant B is made to react at 180～260 DEG C, course of reaction removes water in time that generate, obtaining the product of step (1), it is (0.8～1.2) that reactant A, reactant B and step (1) generate the mol ratio of water: 1:(1.5～2)；
H2N-CH2-CH2-NH-(CH2-CH2-NH)m-CH2-CH2-NH2
A
R-COOH
B
(2) product making step (1) is reacted at 60～160 DEG C with reactant C, removes the R generated in course of reaction in time1OH, obtains the mixture containing metal inhibitor effective ingredient, and reactant C, reactant A and step (2) generate R1The mol ratio of OH is (0.8～1.2): (m+1): [(0.7～1) (m+1)],
(m+1)HCCCOOR1
C
Wherein,
R is the alkyl of C6～C20, cycloalkyl, aryl, alkylaryl, thiazolinyl or hydroxyl thiazolinyl；
M is the integer of 0-5,
R1For H, methyl or ethyl.
2. the preparation method of metal inhibitor as claimed in claim 1, it is characterised in that R is the thiazolinyl of C6～C20 or hydroxyl thiazolinyl.
3. the preparation method of metal inhibitor as claimed in claim 2, it is characterised in that R is the thiazolinyl of C15～C20 or hydroxyl thiazolinyl.
4. the preparation method of the metal inhibitor as according to any one of claims 1 to 3, it is characterized in that, the reaction condition of step (1) is: reaction temperature is 210～230 DEG C, and it is (0.95～1.05) that reactant A, reactant B and step (1) generate the mol ratio of water: 1:(1.95～2).
5. the preparation method of the metal inhibitor as according to any one of claims 1 to 3, it is characterised in that the reaction condition of step (2) is:
R1During for H, reaction temperature is 150～160 DEG C, and reactant C, reactant A and step (2) generate R1The mol ratio of OH is (0.95～1.05): (m+1): [(0.95～1) (m+1)]；
R1During for methyl or ethyl, reaction temperature is 110～120 DEG C, and reactant C, reactant A and step (2) generate R1The mol ratio of OH is (0.95～1.05): (m+1): [(0.95～1) (m+1)].
6. the preparation method of the metal inhibitor as according to any one of claims 1 to 3, it is characterised in that step (1) response time is 2.5～3.5 hours, step (2) response time is 1.5～2.5 hours.
7. the preparation method of the metal inhibitor as according to any one of claims 1 to 3, it is characterised in that step (1) response time is 2.9～3.1 hours, step (2) response time is 1.9～2.1 hours.
8. the preparation method of the metal inhibitor as according to any one of claims 1 to 3, it is characterised in that further comprising the steps of:
(3) by the described mixture containing metal inhibitor effective ingredient and solvent mix homogeneously, metal inhibitor is obtained.
9. the preparation method of metal inhibitor as claimed in claim 8, it is characterised in that described solvent is kerosene and/or isopropanol.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106350808A (en) * | 2016-08-29 | 2017-01-25 | 常熟市晓轶金属配件厂 | Expanding disc for textile equipment |
| CN110724958A (en) * | 2019-11-18 | 2020-01-24 | 西南石油大学 | Corrosion inhibitor for inhibiting metal corrosion and preparation method thereof |
| CN111718298A (en) * | 2020-04-26 | 2020-09-29 | 西南石油大学 | Imidazoline derivative, synthesis method and application thereof |
| CN112321511A (en) * | 2020-11-04 | 2021-02-05 | 沈阳工业大学 | Hydroxyalkylimidazoline amide and preparation method and application thereof |
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