A kind of preparation method and application of dodecenyl succinic acid amine salt

Abstract

The invention discloses a preparation method of dodecyl succinic acid amine salt, which is specifically as follows: mixing dodecyl succinic acid and fatty amine in a molar ratio of 1:1 to 1.05, and the mixed material is in a temperature range of 90 to 110 React for 3-4 hours at ℃, and obtain dodecenyl succinic acid amine salt after the reaction. The invention also discloses the application of the dodecenyl succinic acid amine salt prepared above in a water-based rust inhibitor. The method of the present invention reacts dodecenyl succinic acid with dicyclohexylamine or oleylamine respectively under specific conditions. No solvent is needed during the reaction process, the process is simple, and the prepared dodecenyl succinic acid amine salt can be directly Applied to water-based rust preventives; the dodecenyl succinic acid amine salt obtained by the method of the present invention can apply the existing dodecenyl succinic acid anti-rust oil system to water-based rust preventives, and overcomes the above-mentioned The problem of high free amines exists when the anti-rust oil system is applied to water-based anti-rust agents.

Description

technical field [0001] The invention relates to a preparation method of dodecenyl succinate amine salt, and also relates to the application of the dodecenyl succinate amine salt in water-based rust preventives. 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 high acid value (acid value 250mg KOH / g) to improve its solubility in water by reacting with alcohol amines However, adding alcohol amines to the system will increase the content of free amines in the antirust agent. Since the free amines are ea...

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Problems solved by technology

[0003] Purpose of the invention: the present invention aims at the problem of high free amines in the application of dodecenylsuccinic acid in the water-based antirust system existing in the prior art, and provides a preparation method of dodecenylsuccinic acid amine salt, which The dodecenyl succinic acid amine salt obtained by the method is applied in the water-based anti-rust system, and the free amine in the anti-rust liquid is low. On the one hand, the low free amine makes the anti-rust liquid neutral, and on the other hand, it can improve the environmental protection of the anti-rust liquid. and reduce the occupational risk of operators

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