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A kind of preparation method of caprylamide valeric acid organic salt

A technology of caprylamide valeric acid and organic salts, which is applied in the field of organic chemical synthesis and can solve problems such as poor corrosion resistance

Active Publication Date: 2016-03-16
徐州华钢耐磨材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Compared with the traditional oil-based anti-rust additives, because the water-soluble anti-rust additives contain little or no oil, the existing water-soluble anti-rust additives have the problem of poor corrosion resistance. Synthesis and selection of high-performance water-soluble anti-rust additives are The key to improving the antirust performance of water-based metalworking fluids is to synthesize a caprylamide valeric acid organic salt antirust additive from the perspective of molecular design. No data or reports have been found so far.

Method used

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  • A kind of preparation method of caprylamide valeric acid organic salt
  • A kind of preparation method of caprylamide valeric acid organic salt

Examples

Experimental program
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Effect test

Embodiment 1

[0016] 160 grams of octanoyl chloride and 105 grams of valerolactam were suspended in 200 grams of tetrahydrofuran solvent, added to a four-necked flask equipped with a stirring device, a reflux condenser and a thermometer, and under the action of a catalyst of 7 grams of dimethylformamide, at 50 React at ℃~60℃ for 6h, and distill off the organic solvent under normal pressure; add 25% sodium hydroxide solution to the four-neck flask, carry out hydrolysis reaction at 20~50℃ for 1~3h, until the pH value of the solution is stable at 8~ 9 and until it no longer changes, filter and take the filtrate to obtain the product sodium caprylamide valerate solution; add 35% concentration of hydrochloric acid to the solution of sodium caprylamide valerate for acid analysis until the pH value of the solution is stable at 3~ 4 and until no longer changed, let it stand, filter and wash to obtain caprylamide valeric acid, then react with 100 grams of cyclohexylamine to generate the corresponding...

Embodiment 2

[0018] 162 grams of octanoyl chloride and 115 grams of valerolactam were suspended in 300 grams of tetrahydrofuran solvent, joined in the four-necked flask equipped with stirring device, reflux condenser and thermometer, under the action of 5 grams of dimethylformamide catalyst, at 65 React at ℃~70℃ for 7h, distill off the organic solvent under normal pressure to obtain the intermediate product; add 20% sodium carbonate solution to the four-necked flask, and carry out the hydrolysis reaction at 20~50℃ for 1~3h until the pH value of the solution is stable until it is 8-9 and no longer changes, filter and take the filtrate to obtain the product sodium caprylamide valerate solution; add 80% sulfuric acid to the sodium caprylamide valerate solution for acid analysis until the pH value of the solution is stable to 3 to 4 and until there is no change, let stand, filter and wash to obtain caprylamide valeric acid, and then react with 180 grams of triethanolamine to generate the corres...

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Abstract

The invention discloses a preparation method of an organic salt of caprylamide valeric acid. The preparation method comprises the steps of: gathering a hydrophilic group with water solubility and oily adsorbing group within a molecule by utilizing a view point of a molecular design; reacting caprylyl chloride with valerolactam; carrying out hydrolysis reaction on an intermediate product generated from the reaction under the alkaline condition to generate caprylamide sodium valerate; carrying out acidification under an acidic condition; filtering and washing to obtain caprylamide valeric acid; and then reacting caprylamide valeric acid with hydramine or cyclohexane to generate corresponding organic amine salt. By using the preparation method, a water-soluble rust-resisting additive with good anti-corrosion performance is synthesized.

Description

technical field [0001] The invention relates to the technical field of organic chemical synthesis, in particular to a preparation method of caprylamide valeric acid organic salt. Background technique [0002] Water-based metalworking fluids have been rapidly developed due to their excellent cooling, cleaning, rust resistance, economy and safety, and are widely used in metal processing fields such as cutting, grinding, calendering, stamping and tapping. , water-soluble fatty acid derivative antirust additives have outstanding advantages. First, the raw material synthesis process of water-soluble fatty acid derivative antirust additives is mature, which provides conditions for industrial production; secondly, fatty acid derivatives with different chain lengths The additives have different anti-rust selectivity, and are water-soluble anti-rust additives that are currently widely used in industrial practice. [0003] Compared with the traditional oil-based anti-rust additives, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C233/47C07C231/12C10M133/16C10N30/12C10N40/20
Inventor 修建东
Owner 徐州华钢耐磨材料有限公司