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Neutral water-based antirust agent

A water-based anti-rust agent, neutral technology, applied in the petroleum industry, lubricating compositions, etc., can solve the problems of poor anti-rust effect, and achieve the effects of long anti-rust time, good environmental protection, and low preparation cost

Active Publication Date: 2020-12-04
NANJING KERUN LUBRICANTS +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Purpose of the invention: the present invention aims at the problem of high free amine in the water-based antirust agent in the prior art and the problem that the emulsifier and the antirust agent are easily adsorbed on the metal surface to absorb moisture in the air, resulting in poor antirust effect. water-based rust inhibitor

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] The neutral water-based antirust agent of the present invention is made by mixing the following components: 10 kg of ammonium dodecenyl succinate, 10 kg of oleylamine dodecenyl succinate, and ammonium dinonylnaphthalenesulfonate 10kg, ethylene glycol monobutyl ether 30kg, benzotriazole 0.5kg and water 39.5kg.

[0018] The neutral water-based antirust agent of the present invention is prepared by the following method: dodecenylsuccinate ammonium salt, dodecenylsuccinate oleylamine, dinonylnaphthalenesulfonate ammonium salt and ethyl Diol monobutyl ether is fully stirred at room temperature (stirring time > 1h), then add the formula amount of water, continue to stir for more than 2 hours, finally add the formula amount of benzotriazole and stir for 30min, the obtained neutral water The pH of the rust inhibitor is 7.5.

[0019] The preparation method of dodecenylsuccinic acid oleylamine is as follows: mix 284g dodecenylsuccinic acid and 260g oleylamine, start stirring, he...

Embodiment 2

[0031] The neutral water-based antirust agent of the present invention is formed by mixing the following components: 5 kg of ammonium dodecenyl succinate, 5 kg of dicyclohexylamine dodecenyl succinate, and dinonyl naphthalene sulfonic acid Ammonium salt 20kg, ethylene glycol monophenyl ether 30kg, benzotriazole 0.5kg and water 39.5kg.

[0032] The neutral water-based antirust agent of the present invention is prepared by the following method: the formula amount of dodecenylsuccinate ammonium salt, dodecenylsuccinate dicyclohexylamine, dinonylnaphthalenesulfonate ammonium salt And ethylene glycol monophenyl ether is fully stirred at room temperature (stirring time > 1h), then add the amount of water in the formula, continue to stir for more than 2h, finally add the benzotriazole in the amount of formula and stir for 30min, the obtained medium The pH value of the water-based rust inhibitor is 7.7.

[0033] Among them, the preparation method of dodecenylsuccinic acid dicyclohexy...

Embodiment 3

[0038] The neutral water-based antirust agent of the present invention is formed by mixing the following components: 10 kg of dodecenyl succinic acid oleylamine, 10 kg of dodecenyl succinic acid dicyclohexylamine, dinonyl naphthalene sulfonic acid 5kg of dicyclohexylamine, 5kg of ammonium dinonylnaphthalenesulfonate, 20kg of ethylene glycol monobutyl ether, 10kg of diethylene glycol monobutyl ether, 0.5kg of benzotriazole and 39.5kg of water.

[0039] The neutral water-based antirust agent of the present invention is prepared by the following method: the formula amount of dodecenyl succinic acid oleylamine, dodecenyl succinic acid dicyclohexylamine, dinonyl naphthalene sulfonic acid bicyclic Hexylamine, ammonium dinonylnaphthalenesulfonate, ethylene glycol monobutyl ether and diethylene glycol monobutyl ether are fully stirred at room temperature (stirring time > 1h), then add the amount of water in the formula, and continue to stir for more than 2h. Finally, add the formulate...

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Abstract

The invention discloses a neutral water-based antirust agent, which is prepared by mixing the following components in percentage by mass: 10-20% of dodecenyl succinic acid amine salt and / or dodecenylsuccinic acid ammonium salt, 14-20% of dinonyl naphthalene sulfonic acid amine salt and / or dinonyl naphthalene sulfonic acid ammonium salt, 20-30% of an alcohol ether solvent, 0.5-1% of benzotriazoleand the balance of water. Compared with existing antirust oil, the water-based antirust agent is low in preparation cost, and an existing dodecenylsuccinic acid and barium dinonyl naphthalene sulfonate or calcium dinonyl naphthalene sulfonate antirust oil system can be applied to the water-based antirust agent. In addition, the problems that when the antirust oil system is applied to a water-basedantirust agent, free amine is high, and the antirust effect becomes poor due to the fact that an emulsifying agent and the antirust agent are adsorbed to the metal surface and easily adsorb moisturein air can be solved. Besides, compared with the existing water-based antirust agent, the water-based antirust agent is neutral, so that the environmental protection property is better, and the antirust time is longer.

Description

technical field [0001] The invention relates to an antirust agent, in particular to a neutral water-based antirust agent. Background technique [0002] Dodecenylsuccinic acid and barium dinonylnaphthalenesulfonate or calcium dinonylnaphthalenesulfonate are generally added to traditional antirust oils to improve the salt spray performance of antirust oils. Since dodecenylsuccinic acid (T746) is an oil-soluble corrosion inhibitor with strong acidity and poor water solubility, it can only be used as a lubricating oil or anti-rust oil additive. Use is limited. When dodecenylsuccinic acid is used in water-based antirust solution, it can only use its higher acid value (acid value 250mg KOH / g) to improve its corrosion resistance in water by reacting with different amines. Solubility, but adding alcohol amines to the system will increase the content of free amines in the antirust agent. Since the free amines are easy to volatilize, it will not only increase the pungent taste of th...

Claims

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Application Information

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IPC IPC(8): C10M173/02C10N30/12C10N10/04
CPCC10M173/02C10M2207/127C10M2215/04C10M2215/223C10M2219/044C10M2207/046C10M2201/02C10M2215/044
Inventor 李晓栓郑威胡传山赵凯利
Owner NANJING KERUN LUBRICANTS