CN102277577A - Fluorine-containing cationic imidazoline corrosion inhibitor and preparation method thereof - Google Patents

Fluorine-containing cationic imidazoline corrosion inhibitor and preparation method thereof Download PDF

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CN102277577A
CN102277577A CN 201110226689 CN201110226689A CN102277577A CN 102277577 A CN102277577 A CN 102277577A CN 201110226689 CN201110226689 CN 201110226689 CN 201110226689 A CN201110226689 A CN 201110226689A CN 102277577 A CN102277577 A CN 102277577A
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fluorine
acid
positively charged
charged ion
containing positively
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CN102277577B (en
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张光华
刘国俊
李俊国
房瑜红
朱军峰
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Shaanxi Rixin Petrochemical Co ltd
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Shaanxi University of Science and Technology
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Abstract

The invention provides a fluorine-containing cationic imidazoline corrosion inhibitor and a preparation method thereof. The method comprises the following steps: adding an organic carboxylic acid and diethylenetriamine into a reactor in a molar ratio of 1:(0.1-2); adding a benzene solvent, heating, and performing a reaction at the temperature of 130-165 DEG C; heating, and performing a cyclization reaction at the temperature of 190-210 DEG C; cooling to 80-110 DEG C after the cyclization reaction; dripping perfluoroalkglsulfonyl fluoride after cooling, and performing a thermostatic reaction; and dripping a quaternizing reagent after the thermostatic reaction, and performing a thermostatic reaction to prepare the fluorine-containing cationic imidazoline corrosion inhibitor. The corrosion inhibitor is a rufous sticky liquid and can be miscible with water in any proportion, wherein the flash point is more than 60 DEG C, the condensation point is less than minus 10 DEG C, and the density is between 0.86g/ml and 0.99g/ml. The fluorine-containing cationic imidazoline corrosion inhibitor has the advantages of good metal surface adsorption, easily formed oleophobic metal surface, less possibility of dropping and the like, and can be used for reducing the friction of organic media, such as crude oil, finished product oil and the like, to a vessel surface.

Description

A kind of fluorine-containing positively charged ion imidazoline inhibitor and preparation method thereof
Technical field
The present invention relates to a kind of imidazoline inhibitor and preparation method thereof, be specifically related to a kind of fluorine-containing positively charged ion imidazoline inhibitor and preparation method thereof.
Background technology
In recent years, imidazolines is that development is a kind of faster in the organic inhibitor, its molecular structure contains the nitrogen five-membered ring, its effect characteristics are: when metal contacts with acidic solution, imidazolines can form unimolecular film in the metallic surface, change hydrionic redox potential, reach the purpose of inhibition.
At present, the domestic report aspect imidazoline inhibitor includes: Wang Jianhua, Shu Fuchang etc. are raw material with diethylenetriamine, triethylene tetramine, polyethylene polyamine, oleic acid, Benzyl Chloride, Mono Chloro Acetic Acid, dehydrated alcohol etc., synthesizing series imidazolidine derivatives inhibiter.Zhu tames and dociles, Zhou Xiuqin etc. is a raw material with naphthenic acid, diethylenetriamine, Benzyl Chloride, has synthesized the cycloalkyl imidazolidine derivatives.Though imidazolines has certain effect aspect preventing metal corrosion, but all there is certain shortcoming in aspects such as the inhibition efficiency of above all kinds of imidazolines, high thermal resistance, water-soluble, hydrophobic nature, particularly aspects such as corrosion inhibition rate there is bigger disadvantageous effect, causes applying of imidazolines inhibiter to be affected at high temperature corrosion medium, flow media.
Summary of the invention
The objective of the invention is to improve above the deficiencies in the prior art, provide a kind of and had corrosion inhibition rate preferably and organic stream moving medium and keep fluorine-containing positively charged ion imidazoline inhibitor of certain corrosion mitigating effect and preparation method thereof down.
For achieving the above object, the technical solution used in the present invention is:
The preparation method of fluorine-containing positively charged ion imidazoline inhibitor may further comprise the steps:
With organic carboxyl acid and diethylenetriamine according to 1: the mol ratio of 0.1-2 adds reactor and gets reactant, in reactant, add benzene kind solvent, the mass ratio of reactant and benzene kind solvent is 1: 0.1-2, add and to heat behind the benzene kind solvent and in 130-165 ℃ of reaction 0.5-5h, heat up then and in 190-210 ℃ of cyclization 0.5-5h, the cyclization postcooling is to 80-110 ℃, the cooling back drips perfluoroalkyl sulfonyl fluoride, the mol ratio of perfluoroalkyl sulfonyl fluoride and organic carboxyl acid is 1: 0.1-2, insulation reaction 0.5-5h behind the dropping perfluoroalkyl sulfonyl fluoride, drip quaternizing agent after the insulation reaction, the mol ratio of quaternizing agent and organic carboxyl acid is 1: 0.1-2, insulation reaction 0.5-5h gets fluorine-containing positively charged ion imidazoline inhibitor behind the dropping quaternizing agent.
Obtain refining fluorine-containing positively charged ion imidazoline inhibitor behind the mixing solutions recrystallization of described fluorine-containing positively charged ion imidazoline inhibitor with acetone and toluene, perhaps through obtaining refining fluorine-containing positively charged ion imidazoline inhibitor behind underpressure distillation separation unreacted reactant and the solvent.
Described organic carboxyl acid is saturated or unsaturated C 1-C 22Monobasic fat organic carboxyl acid.
Described saturated or unsaturated C 1-C 22Monobasic fat organic carboxyl acid is cocinic acid, lauroleic acid, capric acid, formic acid, acetate, propionic acid, vinylformic acid, lauric acid, oleic acid or stearic acid.
Described benzene kind solvent is toluene, m-xylene, p-Xylol, o-Xylol or xylol.
Described perfluoroalkyl sulfonyl fluoride is perfluoro butyl sulfonic acid fluoride, perfluoro hexyl sulfonic acid fluoride or full-fluorine octyl sulfuryl fluoride.
Described quaternizing agent is organic chloride or methyl-sulfate.
Described organic chloride is Benzyl Chloride, t butyl chloride, Mono Chloro Acetic Acid or chloracetate, and described t butyl chloride is 1, and 1-2 methyl chloride ethane, described chloracetate are sodium chloroacetate.
This inhibiter is a liquid russet, and is miscible with the water arbitrary proportion, and flash-point is greater than 60 ℃, and condensation point is less than-10 ℃, and density is 0.86-0.99g/ml.
This inhibiter corrosion inhibition rate to carbon steel in the aqueous hydrochloric acid of 25 ℃ of following massfractions 6% reaches more than 90%.
The prepared fluorine-containing positively charged ion imidazoline inhibitor of the present invention is introduced by the raw material of fluoro-containing group and is made the imidazoline inhibitor molecule can reduce the interfacial tension of profit corrosive medium and metallic surface greatly, the easier metallic surface that is adsorbed on after quaternized, form fluorine-containing inhibiter adsorption layer, thereby can effectively stop diffusion and reduction corrosive medium (oil or water) frictional coefficient and the resistance to flow of hydrogen ion to the metallic surface, therefore, can be used for Crude Oil Transportation, fields such as refinery, have with the metallic surface and adsorb, and easily form the metallic surface and hate oil, advantages such as difficult drop-off, simultaneously can reduce organic medium such as crude oil, the finished product wet goods has corrosion inhibition rate and the certain corrosion mitigating effect of the following maintenance of organic stream moving medium preferably to the characteristics such as frictional force of vessel surface.
Embodiment
The present invention will be further described below in conjunction with embodiment.
Embodiment 1
Organic carboxyl acid and diethylenetriamine are added reactor according to 1: 0.1 mol ratio get reactant, described organic carboxyl acid is saturated or unsaturated C 1-C 22Monobasic fat organic carboxyl acid, described saturated or unsaturated C 1-C 22Monobasic fat organic carboxyl acid is an oleic acid, in reactant, add benzene kind solvent, the mass ratio of reactant and benzene kind solvent is 1: 0.1, described benzene kind solvent is a dimethylbenzene, add and to heat behind the benzene kind solvent and in 130 ℃ of reaction 0.5h, heat up then and in 190 ℃ of cyclization 0.5h, cyclization postcooling to 80 ℃, the cooling back drips perfluoroalkyl sulfonyl fluoride, the mol ratio of perfluoroalkyl sulfonyl fluoride and organic carboxyl acid is 1: 0.1, described perfluoroalkyl sulfonyl fluoride is a perfluoro butyl sulfonic acid fluoride, insulation reaction 0.5h behind the dropping perfluoroalkyl sulfonyl fluoride drips quaternizing agent after the insulation reaction, described quaternizing agent is a methyl-sulfate, the mol ratio of quaternizing agent and organic carboxyl acid is 1: 0.1, and insulation reaction 0.5h gets fluorine-containing positively charged ion imidazoline inhibitor behind the dropping quaternizing agent.
Embodiment 2
Organic carboxyl acid and diethylenetriamine are added reactor according to 1: 2 mol ratio get reactant, described organic carboxyl acid is saturated or unsaturated C 1-C 22Monobasic fat organic carboxyl acid, described saturated or unsaturated C 1-C 22Monobasic fat organic carboxyl acid is a stearic acid, in reactant, add benzene kind solvent, the mass ratio of reactant and benzene kind solvent is 1: 2, described benzene kind solvent is a m-xylene, heat and 165 ℃ of reaction 5h after adding benzene kind solvent, heat up then and in 210 ℃ of cyclization 5h, cyclization postcooling to 110 ℃, the cooling back drips perfluoroalkyl sulfonyl fluoride, the mol ratio of perfluoroalkyl sulfonyl fluoride and organic carboxyl acid is 1: 2, described perfluoroalkyl sulfonyl fluoride is the perfluoro hexyl sulfonic acid fluoride, insulation reaction 5h behind the dropping perfluoroalkyl sulfonyl fluoride, drip quaternizing agent after the insulation reaction, the mol ratio of quaternizing agent and organic carboxyl acid is 1: 2, described quaternizing agent is an organic chloride, described organic chloride is a t butyl chloride, described t butyl chloride is 1,1-2 methyl chloride ethane, insulation reaction 5h gets fluorine-containing positively charged ion imidazoline inhibitor after dripping quaternizing agent, and described fluorine-containing positively charged ion imidazoline inhibitor obtains refining fluorine-containing positively charged ion imidazoline inhibitor after separating unreacted reactant and solvent through underpressure distillation.
Embodiment 3
Organic carboxyl acid and diethylenetriamine are added reactor according to 1: 0.4 mol ratio get reactant, described organic carboxyl acid is saturated or unsaturated C 1-C 22Monobasic fat organic carboxyl acid, described saturated or unsaturated C 1-C 22Monobasic fat organic carboxyl acid is a cocinic acid, in reactant, add benzene kind solvent, the mass ratio of reactant and benzene kind solvent is 1: 0.4, described benzene kind solvent is a p-Xylol, add and to heat behind the benzene kind solvent and in 140 ℃ of reaction 1.5h, heat up then and in 195 ℃ of cyclization 1.5h, cyclization postcooling to 85 ℃, the cooling back drips perfluoroalkyl sulfonyl fluoride, the mol ratio of perfluoroalkyl sulfonyl fluoride and organic carboxyl acid is 1: 0.4, described perfluoroalkyl sulfonyl fluoride is a full-fluorine octyl sulfuryl fluoride, and insulation reaction 1.5h behind the dropping perfluoroalkyl sulfonyl fluoride drips quaternizing agent after the insulation reaction, the mol ratio of quaternizing agent and organic carboxyl acid is 1: 0.4, described quaternizing agent is an organic chloride, and described organic chloride is a Mono Chloro Acetic Acid, and insulation reaction 1.5h gets fluorine-containing positively charged ion imidazoline inhibitor behind the dropping quaternizing agent.
Embodiment 4
Organic carboxyl acid and diethylenetriamine are added reactor according to 1: 0.8 mol ratio get reactant, described organic carboxyl acid is saturated or unsaturated C 1-C 22Monobasic fat organic carboxyl acid, described saturated or unsaturated C 1-C 22Monobasic fat organic carboxyl acid is an oleic acid, in reactant, add benzene kind solvent, the mass ratio of reactant and benzene kind solvent is 1: 0.8, described benzene kind solvent is an o-Xylol, add and to heat behind the benzene kind solvent and in 150 ℃ of reaction 2.5h, heat up then and in 200 ℃ of cyclization 2.5h, cyclization postcooling to 90 ℃, the cooling back drips perfluoroalkyl sulfonyl fluoride, the mol ratio of perfluoroalkyl sulfonyl fluoride and organic carboxyl acid is 1: 0.8, described perfluoroalkyl sulfonyl fluoride is a perfluoro butyl sulfonic acid fluoride, insulation reaction 2.5h behind the dropping perfluoroalkyl sulfonyl fluoride, drip quaternizing agent after the insulation reaction, the mol ratio of quaternizing agent and organic carboxyl acid is 1: 0.8, and described quaternizing agent is an organic chloride, and described organic chloride is a chloracetate, described chloracetate is a sodium chloroacetate, and insulation reaction 2.5h gets fluorine-containing positively charged ion imidazoline inhibitor behind the dropping quaternizing agent.
Embodiment 5
Organic carboxyl acid and diethylenetriamine are added reactor according to 1: 1.2 mol ratio get reactant, described organic carboxyl acid is saturated or unsaturated C 1-C 22Monobasic fat organic carboxyl acid, described saturated or unsaturated C 1-C 22Monobasic fat organic carboxyl acid is a lauroleic acid, in reactant, add benzene kind solvent, the mass ratio of reactant and benzene kind solvent is 1: 1.2, described benzene kind solvent is an xylol, add and to heat behind the benzene kind solvent and in 160 ℃ of reaction 3.5h, heat up then and in 205 ℃ of cyclization 3.5h, cyclization postcooling to 95 ℃, the cooling back drips perfluoroalkyl sulfonyl fluoride, the mol ratio of perfluoroalkyl sulfonyl fluoride and organic carboxyl acid is 1: 1.2, described perfluoroalkyl sulfonyl fluoride is the perfluoro hexyl sulfonic acid fluoride, insulation reaction 3.5h behind the dropping perfluoroalkyl sulfonyl fluoride drips quaternizing agent after the insulation reaction, the mol ratio of quaternizing agent and organic carboxyl acid is 1: 1.2, described quaternizing agent is a methyl-sulfate, and insulation reaction 3.5h gets fluorine-containing positively charged ion imidazoline inhibitor behind the dropping quaternizing agent.
Embodiment 6
Organic carboxyl acid and diethylenetriamine are added reactor according to 1: 1.6 mol ratio get reactant, described organic carboxyl acid is saturated or unsaturated C 1-C 22Monobasic fat organic carboxyl acid, described saturated or unsaturated C 1-C 22Monobasic fat organic carboxyl acid is a capric acid, in reactant, add benzene kind solvent, the mass ratio of reactant and benzene kind solvent is 1: 1.6, described benzene kind solvent is an xylol, add and to heat behind the benzene kind solvent and in 155 ℃ of reaction 4.5h, heat up then and in 208 ℃ of cyclization 4.5h, cyclization postcooling to 100 ℃, the cooling back drips perfluoroalkyl sulfonyl fluoride, the mol ratio of perfluoroalkyl sulfonyl fluoride and organic carboxyl acid is 1: 1.6, described perfluoroalkyl sulfonyl fluoride is a full-fluorine octyl sulfuryl fluoride, insulation reaction 4.5h behind the dropping perfluoroalkyl sulfonyl fluoride drips quaternizing agent after the insulation reaction, the mol ratio of quaternizing agent and organic carboxyl acid is 1: 1.6, described quaternizing agent is a methyl-sulfate, and insulation reaction 4.5h gets fluorine-containing positively charged ion imidazoline inhibitor behind the dropping quaternizing agent.
Embodiment 7
Organic carboxyl acid and diethylenetriamine are added reactor according to 1: 1.2 mol ratio get reactant, described organic carboxyl acid is saturated or unsaturated C 1-C 22Monobasic fat organic carboxyl acid, described saturated or unsaturated C 1-C 22Monobasic fat organic carboxyl acid is a formic acid, in reactant, add benzene kind solvent, the mass ratio of reactant and benzene kind solvent is 1: 1.6, described benzene kind solvent is a toluene, add and to heat behind the benzene kind solvent and in 165 ℃ of reaction 0.5h, heat up then and in 205 ℃ of cyclization 1.5h, cyclization postcooling to 100 ℃, the cooling back drips perfluoroalkyl sulfonyl fluoride, the mol ratio of perfluoroalkyl sulfonyl fluoride and organic carboxyl acid is 1: 0.1, described perfluoroalkyl sulfonyl fluoride is a perfluoro butyl sulfonic acid fluoride, insulation reaction 1.5h behind the dropping perfluoroalkyl sulfonyl fluoride, drip quaternizing agent after the insulation reaction, the mol ratio of quaternizing agent and organic carboxyl acid is 1: 0.8, and described quaternizing agent is an organic chloride, and described organic chloride is a Benzyl Chloride, insulation reaction 0.5h gets fluorine-containing positively charged ion imidazoline inhibitor after dripping quaternizing agent, obtains refining fluorine-containing positively charged ion imidazoline inhibitor behind the mixing solutions recrystallization of described fluorine-containing positively charged ion imidazoline inhibitor with acetone and toluene.
Embodiment 8
Organic carboxyl acid and diethylenetriamine are added reactor according to 1: 0.4 mol ratio get reactant, described organic carboxyl acid is saturated or unsaturated C 1-C 22Monobasic fat organic carboxyl acid, described saturated or unsaturated C 1-C 22Monobasic fat organic carboxyl acid is an acetate, in reactant, add benzene kind solvent, the mass ratio of reactant and benzene kind solvent is 1: 0.8, described benzene kind solvent is a m-xylene, add and to heat behind the benzene kind solvent and in 150 ℃ of reaction 3.5h, heat up then and in 195 ℃ of cyclization 5h, cyclization postcooling to 110 ℃, the cooling back drips perfluoroalkyl sulfonyl fluoride, the mol ratio of perfluoroalkyl sulfonyl fluoride and organic carboxyl acid is 1: 0.4, described perfluoroalkyl sulfonyl fluoride is the perfluoro hexyl sulfonic acid fluoride, insulation reaction 0.5h behind the dropping perfluoroalkyl sulfonyl fluoride, drip quaternizing agent after the insulation reaction, the mol ratio of quaternizing agent and organic carboxyl acid is 1: 1.2, and described quaternizing agent is an organic chloride, described organic chloride is a t butyl chloride, described t butyl chloride is 1,1-2 methyl chloride ethane, and insulation reaction 3.5h gets fluorine-containing positively charged ion imidazoline inhibitor behind the dropping quaternizing agent.
Embodiment 9
Organic carboxyl acid and diethylenetriamine are added reactor according to 1: 2 mol ratio get reactant, described organic carboxyl acid is saturated or unsaturated C 1-C 22Monobasic fat organic carboxyl acid, described saturated or unsaturated C 1-C 22Monobasic fat organic carboxyl acid is a propionic acid, in reactant, add benzene kind solvent, described benzene kind solvent is a p-Xylol, the mass ratio of reactant and benzene kind solvent is 1: 0.1, add and to heat behind the benzene kind solvent and in 140 ℃ of reaction 1.5h, heat up then and in 210 ℃ of cyclization 3.5h, cyclization postcooling to 90 ℃, the cooling back drips perfluoroalkyl sulfonyl fluoride, the mol ratio of perfluoroalkyl sulfonyl fluoride and organic carboxyl acid is 1: 1.2, described perfluoroalkyl sulfonyl fluoride is a full-fluorine octyl sulfuryl fluoride, and insulation reaction 3.5h behind the dropping perfluoroalkyl sulfonyl fluoride drips quaternizing agent after the insulation reaction, the mol ratio of quaternizing agent and organic carboxyl acid is 1: 1.6, described quaternizing agent is an organic chloride, and described organic chloride is a Mono Chloro Acetic Acid, and insulation reaction 1.5h gets fluorine-containing positively charged ion imidazoline inhibitor behind the dropping quaternizing agent.
Embodiment 10
Organic carboxyl acid and diethylenetriamine are added reactor according to 1: 1.6 mol ratio get reactant, described organic carboxyl acid is saturated or unsaturated C 1-C 22Monobasic fat organic carboxyl acid, described saturated or unsaturated C 1-C 22Monobasic fat organic carboxyl acid is a vinylformic acid, in reactant, add benzene kind solvent, the mass ratio of reactant and benzene kind solvent is 1: 1.2, described benzene kind solvent is an o-Xylol, add and to heat behind the benzene kind solvent and in 130 ℃ of reaction 4.5h, heat up then and in 200 ℃ of cyclization 0.5h, cyclization postcooling to 85 ℃, the cooling back drips perfluoroalkyl sulfonyl fluoride, the mol ratio of perfluoroalkyl sulfonyl fluoride and organic carboxyl acid is 1: 0.8, described perfluoroalkyl sulfonyl fluoride is a perfluoro butyl sulfonic acid fluoride, insulation reaction 2.5h behind the dropping perfluoroalkyl sulfonyl fluoride, drip quaternizing agent after the insulation reaction, the mol ratio of quaternizing agent and organic carboxyl acid is 1: 0.1, and described quaternizing agent is an organic chloride, and described organic chloride is a chloracetate, described chloracetate is a sodium chloroacetate, and insulation reaction 5h gets fluorine-containing positively charged ion imidazoline inhibitor behind the dropping quaternizing agent.
Embodiment 11
Organic carboxyl acid and diethylenetriamine are added reactor according to 1: 1.5 mol ratio get reactant, described organic carboxyl acid is saturated or unsaturated C 1-C 22Monobasic fat organic carboxyl acid, described saturated or unsaturated C 1-C 22Monobasic fat organic carboxyl acid is a lauric acid, in reactant, add benzene kind solvent, the mass ratio of reactant and benzene kind solvent is 1: 1.5, described benzene kind solvent is an xylol, add and to heat behind the benzene kind solvent and in 155 ℃ of reaction 3h, heat up then and in 195 ℃ of cyclization 3h, cyclization postcooling to 95 ℃, the cooling back drips perfluoroalkyl sulfonyl fluoride, the mol ratio of perfluoroalkyl sulfonyl fluoride and organic carboxyl acid is 1: 1.5, described perfluoroalkyl sulfonyl fluoride is the perfluoro hexyl sulfonic acid fluoride, insulation reaction 3h behind the dropping perfluoroalkyl sulfonyl fluoride drips quaternizing agent after the insulation reaction, the mol ratio of quaternizing agent and organic carboxyl acid is 1: 1.5, described quaternizing agent is a methyl-sulfate, and insulation reaction 3h gets fluorine-containing positively charged ion imidazoline inhibitor behind the dropping quaternizing agent.
The fluorine-containing positively charged ion imidazoline inhibitor of method for preparing, this inhibiter outward appearance is a viscous liquid russet, and is miscible with the water arbitrary proportion, and flash-point is greater than 60 ℃, and condensation point is less than-10 ℃, and density (20 ℃) is 0.86-0.99g/ml.Corrosion inhibition rate to carbon steel in the aqueous hydrochloric acid of this inhibiter massfraction 6% under 25 ℃ (room temperatures) reaches more than 90%.
The effect contrast test:
With weight-loss method research, material is the Q235 carbon steel, the test before with test piece after abrasive paper for metallograph sanding and polishing, deionized water wash, dehydrated alcohol, acetone degreasing, drying for standby under the room temperature.During experiment it is hung respectively and immerse 25 ℃ and 60 ℃, add (the inhibiter add-on is 200mg/L) or do not add in the HCl aqueous solution of massfraction 6% of inhibiter, take out behind the 24h, clean the surface corrosion product with soft rubber, to constant weight, corrosion inhibition rate is measured and calculated to method routinely with deionized water and acetone cleaning-drying.
Under the normal temperature clean Q235 carbon steel sample is immersed in the aqueous hydrochloric acid of the massfraction 6% that contains the 1g/L inhibiter, takes out after 24 hours, embathe respectively once with deionized water and acetone, 60 ℃ of dryings of baking oven are surveyed its wetting angle.
It is as shown in table 1 to test every index comparing result: as can be seen from Table 1, the fluorine-containing imidazoline inhibitor of present patent application preparation at room temperature (25 ℃) reaches more than 90% the slowly-releasing rate of sample (carbon steel), corrosion mitigating effect is better than existing not fluorine-containing imidazoline inhibitor, simultaneously, the fluorine-containing imidazoline inhibitor of present patent application preparation has significantly reduced the friction of corrosive medium and metallic surface, keeps certain corrosion mitigating effect under the organic stream moving medium.
Table 1
Figure BDA0000082106300000101
The above only is one embodiment of the present invention, it or not whole or unique embodiment, the conversion of any equivalence that those of ordinary skills take technical solution of the present invention by reading specification sheets of the present invention is claim of the present invention and contains.

Claims (10)

1. the preparation method of a fluorine-containing positively charged ion imidazoline inhibitor is characterized in that may further comprise the steps:
With organic carboxyl acid and diethylenetriamine according to 1: the mol ratio of 0.1-2 adds reactor and gets reactant, in reactant, add benzene kind solvent, the mass ratio of reactant and benzene kind solvent is 1: 0.1-2, add and to heat behind the benzene kind solvent and in 130-165 ℃ of reaction 0.5-5h, heat up then and in 190-210 ℃ of cyclization 0.5-5h, the cyclization postcooling is to 80-110 ℃, the cooling back drips perfluoroalkyl sulfonyl fluoride, the mol ratio of perfluoroalkyl sulfonyl fluoride and organic carboxyl acid is 1: 0.1-2, insulation reaction 0.5-5h behind the dropping perfluoroalkyl sulfonyl fluoride, drip quaternizing agent after the insulation reaction, the mol ratio of quaternizing agent and organic carboxyl acid is 1: 0.1-2, insulation reaction 0.5-5h gets fluorine-containing positively charged ion imidazoline inhibitor behind the dropping quaternizing agent.
2. according to the preparation method of the described a kind of fluorine-containing positively charged ion imidazoline inhibitor of claim 1, it is characterized in that: obtain refining fluorine-containing positively charged ion imidazoline inhibitor behind the mixing solutions recrystallization of described fluorine-containing positively charged ion imidazoline inhibitor with acetone and toluene, perhaps through obtaining refining fluorine-containing positively charged ion imidazoline inhibitor behind underpressure distillation separation unreacted reactant and the solvent.
3. according to the preparation method of the described a kind of fluorine-containing positively charged ion imidazoline inhibitor of claim 1, it is characterized in that: described organic carboxyl acid is saturated or unsaturated C 1-C 22Monobasic fat organic carboxyl acid.
4. according to the preparation method of the described a kind of fluorine-containing positively charged ion imidazoline inhibitor of claim 3, it is characterized in that: described saturated or unsaturated C 1-C 22Monobasic fat organic carboxyl acid is cocinic acid, lauroleic acid, capric acid, formic acid, acetate, propionic acid, vinylformic acid, lauric acid, oleic acid or stearic acid.
5. according to the preparation method of the described a kind of fluorine-containing positively charged ion imidazoline inhibitor of claim 1, it is characterized in that: described benzene kind solvent is toluene, m-xylene, p-Xylol, o-Xylol or xylol.
6. according to the preparation method of the described a kind of fluorine-containing positively charged ion imidazoline inhibitor of claim 1, it is characterized in that: described perfluoroalkyl sulfonyl fluoride is perfluoro butyl sulfonic acid fluoride, perfluoro hexyl sulfonic acid fluoride or full-fluorine octyl sulfuryl fluoride.
7. according to the preparation method of the described a kind of fluorine-containing positively charged ion imidazoline inhibitor of claim 1, it is characterized in that: described quaternizing agent is organic chloride or methyl-sulfate.
8. according to the preparation method of the described a kind of fluorine-containing positively charged ion imidazoline inhibitor of claim 7, it is characterized in that: described organic chloride is Benzyl Chloride, t butyl chloride, Mono Chloro Acetic Acid or chloracetate, described t butyl chloride is 1,1-2 methyl chloride ethane, described chloracetate are sodium chloroacetate.
9. according to the fluorine-containing positively charged ion imidazoline inhibitor of the preparation method of the described a kind of fluorine-containing positively charged ion imidazoline inhibitor of claim 1 preparation, it is characterized in that: this inhibiter is a liquid russet, miscible with the water arbitrary proportion, flash-point is greater than 60 ℃, condensation point is less than-10 ℃, and density is 0.86-0.99g/ml.
10. according to the fluorine-containing positively charged ion imidazoline inhibitor of the preparation method of the described a kind of fluorine-containing positively charged ion imidazoline inhibitor of claim 1 preparation, it is characterized in that: this inhibiter corrosion inhibition rate to carbon steel in the aqueous hydrochloric acid of 25 ℃ of following massfractions 6% reaches more than 90%.
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CN105968052A (en) * 2016-05-04 2016-09-28 辽宁科技学院 Imidazoline corrosion inhibitor and preparation method thereof
CN108728207A (en) * 2018-06-20 2018-11-02 中国石油化工股份有限公司 Rust-inhibiting additive and preparation method thereof and the application in perfluoro polyether oil
CN110042398A (en) * 2019-05-29 2019-07-23 中国石油化工股份有限公司 Imidazoline high temperature resistant corrosion inhibitor and preparation method thereof
CN112341364A (en) * 2020-09-29 2021-02-09 陈力群 Preparation method and application of surfactant
CN114456148A (en) * 2022-01-11 2022-05-10 中海油天津化工研究设计院有限公司 Oil field corrosion inhibitor with good compatibility and preparation method thereof
CN114456148B (en) * 2022-01-11 2024-08-30 中海油天津化工研究设计院有限公司 Oilfield corrosion inhibitor with good compatibility and preparation method thereof
CN116589999A (en) * 2023-05-17 2023-08-15 广汉市华星新技术开发研究所(普通合伙) Composite retarded acid and preparation method thereof

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