A kind of polyvinyl triazole compound and preparation method thereof

A technology of polyvinyltriazole and compounds, applied in the direction of organic chemistry, which can solve the problems of poor film-forming performance and achieve the effects of improved alkali resistance and good corrosion inhibition

Active Publication Date: 2017-10-10
湖南隆铼新材料科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Organic corrosion inhibitors are mainly compounds containing heteroatoms or unsaturated bonds, which can form bonds with empty d orbitals of metal atoms, thereby adsorbing and forming films; to change H + The oxidation-reduction potential or some oxidants in the complex solution to reduce the electrode potential to achieve the purpose of corrosion inhibition; however, most of the commonly used corrosion inhibitors are small molecule complexes, such as imidazoline and Mannich bases etc., its film-forming performance on the metal surface is poor

Method used

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  • A kind of polyvinyl triazole compound and preparation method thereof
  • A kind of polyvinyl triazole compound and preparation method thereof
  • A kind of polyvinyl triazole compound and preparation method thereof

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preparation example Construction

[0033] see figure 1 , The preparation method of polyvinyltriazole compound of the present invention comprises ring-opening reaction of cyclic ether, nucleophilic substitution reaction and polymerization reaction etc., concrete steps are as follows:

[0034] Step 1): In a three-neck flask equipped with a constant pressure funnel, a stirrer, and a reflux condenser, add the acetone solution of hydroxyethyl acrylate, stir well, and adjust the pH value to 3-6 with hydrochloric acid, and then set the temperature at 0°C to 50 At the temperature of ℃, slowly drop epichlorohydrin into the flask and the dropping time is 0.5h~2.5h. After the dropping, raise the temperature to 70℃~100℃ for 0.5h~2h; Wash the combined organic layers with water, distill and dry to obtain the intermediate product 1-chloro-2-hydroxyl-propyl-ethyl acrylate ether; wherein, the mass ratio of hydroxyethyl acrylate to epichlorohydrin is 1: (1~ 2), the mass fraction of the acetone solution of hydroxyethyl acrylate ...

Embodiment 1

[0038] The preparation method of polyvinyl triazole compound comprises the following steps:

[0039] Step 1): in the there-necked flask equipped with constant pressure funnel, stirrer, reflux condenser, add the acetone solution of hydroxyethyl acrylate (mass fraction is 30%), fully stir, and be 15% hydrochloric acid adjustment with mass fraction The pH value is 3, and then at 10°C, slowly add epichlorohydrin dropwise to the flask for 1 hour, and after the drop is completed, the temperature is raised to 70°C for 1.5 hours; then, the reaction mixture is cooled to room temperature, washed with water and combined with organic Layer, distilled and dried to obtain the intermediate product 1-chloro-2-hydroxyl-propyl-ethyl acrylate ether; wherein, the mass ratio of hydroxyethyl acrylate to epichlorohydrin is 1:1.2;

[0040]Step 2): The DMF solution of the product 1-chloro-2-hydroxy-propyl-acrylic acid ethyl ester ether prepared in step 1) is dropped into the reaction system with 1,2,4...

Embodiment 2

[0042] The preparation method of polyvinyl triazole compound comprises the following steps:

[0043] Step 1): in the there-necked flask equipped with constant pressure funnel, stirrer, reflux condenser, add the acetone solution of hydroxyethyl acrylate (mass fraction is 35%), fully stir, and be 20% hydrochloric acid adjustment with mass fraction The pH value is 4, and then at 0°C, slowly add epichlorohydrin dropwise to the flask for 0.5h, and after the drop, the temperature is raised to 80°C for 2h; then, the reaction mixture is cooled to room temperature, washed with water and combined The organic layer was distilled and dried to obtain the intermediate product 1-chloro-2-hydroxyl-propyl-ethyl acrylate ether; wherein, the mass ratio of hydroxyethyl acrylate to epichlorohydrin was 1:1;

[0044] Step 2): The DMF solution of the product 1-chloro-2-hydroxy-propyl-acrylic acid ethyl ester ether prepared in step 1) is dropped into the reaction system with 1,2,4-triazole and inorgan...

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Abstract

The invention discloses a polyvinyl triazole compound and a preparation method thereof.An acetone solution of hydroxyethyl acrylate is added into a reactor, the pH value is adjusted to be 3-6, then, epoxy chloropropane is added into the reactor drop by drop, and a reaction is performed to obtain 1-chloro-3-hydroxy-butyl-acrylic acid ethyl ether; a DMF solution of the 1-chloro-3-hydroxy-butyl-acrylic acid ethyl ether is dropped into a reaction system containing 1,2,4-triazole and inorganic base, a thermostatic reaction is performed at the temperature 60-90 DEG C for 7-10 h, deionized water, an initiator, a chain transfer agent and a chelating agent are added, and the reaction is performed for 2-5 h.The corrosion inhibitor is corrosion inhibitor molecules by adopting N and O atoms as active centers, and lone pair electrons on heteroatoms can be complex with metal ions in a coordination bond mode to form a polymer and can be combined with metal ions so as to cover the surface of equipment in the mode of an adsorption membrane to achieve corrosion inhibition.

Description

technical field [0001] The invention belongs to the field of fine chemicals and relates to an oilfield chemical, in particular to a polyvinyltriazole compound and a preparation method thereof. Background technique [0002] With the development of oil drilling technology and the advancement of oil recovery technology, a large number of deep wells, ultra-deep wells and extremely deep wells have been put into development, which makes oil collection more difficult. Acidizing is one of the production stimulation measures often used in oil field exploitation. Its principle is to use acid liquid to dissolve and dissolve rock cement or blockages in formation voids and cracks; however, the process of injecting acid liquid into formation and collecting oil will Corrosion occurs to varying degrees on surface pipelines and wellbore walls, and sometimes even causes unexpected incidents of equipment pipeline rupture, resulting in huge economic losses and environmental pollution. Therefor...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F120/36C23F11/173C07D249/08
CPCC07D249/08C08F120/36C23F11/173
Inventor 郭睿甄建斌刘爱玉李晓芳杨江月王超程敏李欢乐
Owner 湖南隆铼新材料科技有限公司
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