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Anti-rust additive, and preparation method and application thereof

A technology of anti-rust additives and addition amount, applied in the field of anti-rust additives, can solve the problems of low solubility of oil-capable anti-rust additives, no anti-rust effect, sensitivity to electrolytes, etc., and achieve good anti-rust effect and good wetting. , the effect of strong adhesion

Inactive Publication Date: 2010-06-30
JIATE LUBRICANTS SHENYANG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Phosphate can lead to eutrophication in rivers and rivers, while oil-capacity anti-rust additives have extremely low solubility in water, cannot achieve anti-rust effect, and are sensitive to electrolytes, so they should not be used under hard water conditions

Method used

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  • Anti-rust additive, and preparation method and application thereof
  • Anti-rust additive, and preparation method and application thereof
  • Anti-rust additive, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] 1) In terms of weight ratio, first add 78.8 kg of oleic acid CH to the heated and stirred stainless steel reactor when it is preheated to 80°C 3 (CH 2 ) 7 CH=CH(CH 2 ) 7 COOH, heat and stir, add 27.35 kg of maleic anhydride and 0.1 kg of phosphoric acid solution with a concentration of 85% by mass at 140°C, then continue to heat and stir, and continue to react at 175°C for 4 hours, and the acid value is ≤ 15%;

[0024] 2) After the reaction, stop heating, cool down naturally, when the temperature drops to 130°C, add 93.8 kg of diethanolamine HN(CH 2 CH 2 Oh) 2 With 0.4 kg of potassium hydroxide, after the addition of the feed, vacuumize the reaction, the pressure is 10.1325KPa, vacuumize to remove the water generated in the reaction process, control the reaction temperature to be 145 ° C, continue the reaction for 3.5 hours, and the amine value is 16.32;

[0025] 3) After the reaction, the temperature was naturally lowered to 60°C to obtain a brownish-yellow oil ...

Embodiment 2

[0033] 1) In terms of weight ratio, first add 158.1 kg of oleic acid CH to the heated and stirred stainless steel reactor when it is preheated to 80°C 3 (CH 2 ) 7 CH=CH(CH 2 ) 7 COOH, heat and stir, add 55 kg of maleic anhydride and 0.3 kg of 85% phosphoric acid solution at 140 ° C, then continue heating and stirring, and continue to react at 175 ° C for 4 hours, the acid value is ≤ 15 %;

[0034] 2) After the reaction, stop heating, cool down naturally, and when the temperature drops to 130°C, add 188 kg of diethanolamine HN(CH 2 CH 2 Oh) 2 With 0.6 kg of potassium hydroxide, after the addition of the feed, vacuumize the reaction, the pressure is 10.1325KPa, vacuumize to remove the water generated in the reaction process, control the reaction temperature to be 145 ° C, continue the reaction for 3.5 hours, and the amine value is 16.32;

[0035] 3) After the reaction, the temperature was naturally lowered to 60°C to obtain a brownish-yellow oil with a solid content ≥ 99%...

Embodiment 3

[0037] 1) In terms of weight ratio, first add 236 kg of oleic acid CH to the heated and stirred stainless steel reactor when it is preheated to 80°C 3 (CH 2 ) 7 CH=CH(CH 2 ) 7 COOH, heat and stir, add 82 kg of maleic anhydride and 0.6 kg of 85% phosphoric acid solution at 140 ° C, then continue heating and stirring, and continue to react at 175 ° C for 4 hours, the acid value is ≤ 15 %;

[0038] 2) After the reaction, stop heating, cool down naturally, when the temperature drops to 130°C, add 283 kg of diethanolamine HN(CH 2 CH 2 Oh) 2 With 0.8 kg of potassium hydroxide, after the addition of the feed, vacuumize the reaction, the pressure is 10.1325KPa, vacuumize to remove the water generated in the reaction process, control the reaction temperature to 145 ° C, continue the reaction for 3.5 hours, and the amine value is 16.32;

[0039]3) After the reaction, the temperature was naturally lowered to 60°C to obtain a brownish-yellow oil with a solid content ≥ 99%; firstly ...

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Abstract

The invention discloses anti-rust additive which belongs to the field of metal corrosion and protection. The invention also relates to a preparation method of the anti-rust additive which comprises that the anti-rust additive is added to water, water-based cutting fluid, water-based grinding fluid, water-soluble anti-rust oil, oil-soluble anti-rust oil, paint or coating to play an anti-rust pole. The anti-rust additive provided by the invention does not contain carcinogen nitrite, and is water-soluble anti-rust additive with good performance and no harm; and in addition, the anti-rust additive is water-soluble, can be used under the condition of hard water, and has good anti-rust effect. The general formula of the anti-rust additive is shown as the accompanying drawing.

Description

technical field [0001] The invention relates to the field of metal corrosion and protection, in particular to an antirust additive, its preparation method and application. Background technique [0002] In recent years, due to energy shortages, countries around the world are studying the use of energy-saving and environmentally friendly "water-based cutting fluids" to replace previous cutting oils and emulsified oils. On the other hand, due to the excellent cooling performance of "water-based cutting fluids" and the No fumes and gases harmful to the operator's body are produced. The working environment is clean and easy to observe the processing process. It has been widely used in some developed countries, and it has also received general attention in our country, but it has not been widely promoted. This is because the anti-rust additives in the "water-based cutting fluid" produced by some domestic manufacturers are mainly nitrite, three Ethanolamine, Phosphate, etc. Ammo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23F11/12
Inventor 宋德仁
Owner JIATE LUBRICANTS SHENYANG
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