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A neutral water-based antirust agent

A water-based anti-rust agent, neutral technology, applied in the field of anti-rust agent, can solve the problems of poor anti-rust effect, etc., and achieve the effects of long anti-rust time, reduced stimulation and low preparation cost

Active Publication Date: 2022-06-28
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 rust inhibitor of the present invention is prepared by mixing the components of the following qualities: 10kg of ammonium dodecenylsuccinate, 10kg of oleylamine dodecenylsuccinate, and ammonium dinonylnaphthalenesulfonate 10kg, 30kg of ethylene glycol monobutyl ether, 0.5kg of benzotriazole and 39.5kg of water.

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

[0019] The preparation method of oleylamine dodecenylsuccinic acid, specifically: mix 284g dodecenylsuc...

Embodiment 2

[0031] The neutral water-based rust inhibitor of the present invention is prepared by mixing the following components: 5kg of ammonium dodecenylsuccinate, 5kg of dicyclohexylamine dodecenylsuccinate, 5kg of dinonylnaphthalenesulfonic acid 20kg of ammonium salt, 30kg of ethylene glycol monophenyl ether, 0.5kg of benzotriazole and 39.5kg of water.

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

[0033] Wherein, the preparation method of dodecenylsuccinic ac...

Embodiment 3

[0038] The neutral water-based rust inhibitor of the present invention is prepared by mixing the following components: oleylamine dodecenylsuccinate 10kg, dicyclohexylamine dodecenylsuccinate 10kg, dinonylnaphthalene sulfonic acid 5 kg of dicyclohexylamine, 5 kg of dinonylnaphthalenesulfonic acid ammonium salt, 20 kg of ethylene glycol monobutyl ether, 10 kg of diethylene glycol monobutyl ether, 0.5 kg of benzotriazole, and 39.5 kg of water.

[0039] The neutral water-based rust inhibitor of the present invention is prepared by the following method: oleylamine dodecenylsuccinate, dicyclohexylamine dodecenylsuccinate, dinonylnaphthalenesulfonic acid bicyclic Hexylamine, dinonylnaphthalenesulfonic acid ammonium salt, ethylene glycol monobutyl ether and diethylene glycol monobutyl ether are fully stirred at room temperature (stirring time > 1h), then add the prescribed amount of water, and continue to stir for more than 2h, Finally, add the benzotriazole of the formula amount and...

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Abstract

The invention discloses a neutral water-based antirust agent, which is prepared by mixing the following components in mass fraction: ammonium dodecenyl succinate and / or ammonium dodecenyl succinate 10-20% 14-20% of ammonium dinonylnaphthalenesulfonate and / or ammonium dinonylnaphthalenesulfonate, 20-30% of alcohol ether solvent, 0.5-1% of benzotriazole and the balance of water. Compared with the existing antirust oil, the water-based antirust agent of the present invention has low preparation cost, and can prevent rust by combining the existing dodecenylsuccinic acid and barium dinonylnaphthalenesulfonate or calcium dinonylnaphthalenesulfonate The oil system is applied to the water-based anti-rust agent, and it can also overcome the high free amine that exists when the above-mentioned anti-rust oil system is applied to the water-based anti-rust agent and the adsorption of the emulsifier and the anti-rust agent on the metal surface is easy to absorb moisture in the air, resulting in anti-corrosion. The rust effect becomes worse; in addition, compared with the existing water-based anti-rust agent, the water-based anti-rust agent of the present invention is neutral, not only has better environmental protection, but also has a longer anti-rust time.

Description

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

Claims

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Application Information

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Patent Type & Authority Patents(China)
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
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