A kind of Mannich base acidification corrosion inhibitor and preparation method thereof
A technology of acidifying corrosion inhibitor and Mannich base, applied in chemical instruments and methods, preparation of organic compounds, organic chemistry, etc., can solve the problems of poor solubility and dispersibility and slow-release type, and achieve both water solubility and enhancement. Adsorption capacity, taking into account the effect of slow release
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Embodiment 1
[0029] The structural formula of the Mannich base acidification corrosion inhibitor of the present embodiment is as follows:
[0030]
[0031] Its preparation process route is:
[0032]
[0033] The preparation method of the Mannich base acidification corrosion inhibitor of the present embodiment comprises the following steps:
[0034] (1) Put 30g of paraformaldehyde into a 1000ml three-necked flask, add 100ml of ethanol and stir; take 88g of N,N-dimethylethylenediamine, dissolve it in 50ml of ethanol, slowly drop it into the flask, and heat up to 60°C React for 2 hours; add concentrated hydrochloric acid to the flask to adjust the pH to 2-3, add 120 g of acetophenone, raise the temperature to 80° C. and react for 8-12 hours to obtain a dark brown liquid that is Mannich base solution.
[0035] (2) After the above liquid is cooled to room temperature, add an appropriate amount of 30% sodium hydroxide solution to adjust the pH of the solution to 8-9, add 253g of benzyl ch...
Embodiment 2
[0043] The structural formula of the Mannich base acidification corrosion inhibitor of the present embodiment is as follows:
[0044]
[0045] Its preparation process route is:
[0046]
[0047] The preparation method of the Mannich base acidification corrosion inhibitor of the present embodiment comprises the following steps:
[0048] (1) Put 30g of paraformaldehyde into a 1000ml three-necked flask, add 100ml of ethanol and stir; take 88g of N,N-dimethylethylenediamine, dissolve it in 50ml of ethanol, slowly drop it into the flask, and heat up to 60°C React for 2 hours; add concentrated hydrochloric acid to the flask to adjust the pH to 2-3, add 120 g of acetophenone, raise the temperature to 80° C. and react for 8-12 hours to obtain a dark brown liquid that is Mannich base solution.
[0049] (2) After the above liquid is cooled to room temperature, add an appropriate amount of 30% sodium hydroxide solution to adjust the pH of the solution to 8-9, add 353g of 2-(chloro...
Embodiment 3
[0057] The structural formula of the Mannich base acidification corrosion inhibitor of the present embodiment is as follows:
[0058]
[0059] Its preparation process route is:
[0060]
[0061] The preparation method of the Mannich base acidification corrosion inhibitor of the present embodiment comprises the following steps:
[0062] (1) Put 30g of paraformaldehyde into a 1000ml three-necked flask, add 100ml of ethanol and stir; take 88g of N,N-dimethylethylenediamine, dissolve it in 50ml of ethanol, slowly drop it into the flask, and heat up to 60°C React for 2 hours; add concentrated hydrochloric acid to the flask to adjust the pH to 2-3, add 120 g of acetophenone, raise the temperature to 80° C. and react for 8-12 hours to obtain a dark brown liquid that is Mannich base solution.
[0063] (2) After the above liquid is cooled to room temperature, add an appropriate amount of 30% sodium hydroxide solution to adjust the pH of the solution to 8-9, add 453g of 9-chlorom...
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