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A kind of preparation method and application of lithium hydroxy fatty acid

A technology of lithium hydroxyfatty acid and hydroxystearic acid, applied in the directions of additives, lubricating compositions, petroleum industry, etc., can solve the problems of many impurities, unsatisfactory purity of lithium stearate, insufficient particle size, etc. The effect of uniform morphology, improved dropping point and anti-friction and anti-wear properties

Active Publication Date: 2021-08-17
BELIKE CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] CN104387257B discloses a kind of preparation method of lithium stearate, comprises steps as follows: put stearic acid into reaction kettle under normal pressure and heat to 145-205 ℃; Add lithium hydroxide, catalyst, stearic acid in two steps React with lithium hydroxide under the effect of catalyst; Add antioxidant and stir; Molten lithium stearate is sprayed mist through shower head, under the cooling of the cold wind that flows upwards below the shower head, be cooled to microparticles, but There are still too many impurities in this aspect, and the purity of the prepared lithium stearate is not satisfactory, and the particle size is not small enough

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A kind of preparation method of hydroxy fatty acid lithium, it is characterized in that, comprising: (1) the 12 hydroxy stearic acid of 60 mass parts, the butanediol of 5 mass parts, the citric acid of 0.5 mass part, the deionized Water, adjust the pH to 3-4 by adding hydrochloric acid dropwise, and add it into the autoclave after stirring at 300 rpm for 1.5 hours; the DO of the deionized water is less than 1 mg / L; (2) 0.3 parts by mass of lithium citrate Add the hydrate into the autoclave, raise the temperature to 100°C, stir at normal pressure for 0.75 hours, add 4.5 parts by mass of lithium hydroxide into the autoclave, seal it, and pass it into nitrogen protection, at 230°C, the speed is 300 Turn and stir for 1.5 hours, cool, filter, and wash with hot water. The deionized water was boiled for 30 minutes before use, and after cooling, nitrogen gas was bubbled for 10-20 minutes.

[0018] Lithium hydroxy fatty acid is used to prepare a lithium-based lubricant, which i...

Embodiment 2

[0020] A kind of preparation method of hydroxy fatty acid lithium, it is characterized in that, comprising: (1) the 12 hydroxystearic acid of 60 mass parts, the butanediol of 4 mass parts, the citric acid of 0.6 mass part, the deionized Water, adjust the pH to 3-4 by adding hydrochloric acid dropwise, and add it into the autoclave after stirring at 500 rpm for 1 hour; the DO of the deionized water is less than 1 mg / L; (2) 0.2 parts by mass of lithium citrate Add the hydrate into the autoclave, raise the temperature to 100°C, stir at normal pressure for 1 hour, add 4.6 parts by mass of lithium hydroxide into the autoclave, seal it, and pass it into the autoclave for protection, at 220°C, the speed is 400 rpm Stir for 1 hour, cool and filter, and wash with hot water. The deionized water was boiled for 30 minutes before use, and after cooling, nitrogen gas was bubbled for 10-20 minutes.

Embodiment 3

[0022] A kind of preparation method of hydroxy fatty acid lithium, it is characterized in that, comprising: (1) with the 12 hydroxystearic acid of 60 mass parts, the butanediol of 6 mass parts, the citric acid of 0.4 mass part, the deionized Water, adjust the pH to 3-4 by adding hydrochloric acid dropwise, and add it into the autoclave after stirring at 200 rpm for 2 hours; the DO of the deionized water is less than 1 mg / L; (2) 0.4 parts by mass of lithium citrate Add the hydrate into the autoclave, raise the temperature to 100°C, stir at normal pressure for 0.5h, add 4.4 parts by mass of lithium hydroxide into the autoclave, seal it, and pass it into the autoclave for protection, at 240°C, the speed is 200 Turn and stir for 2 hours, cool and filter, and wash with hot water. The deionized water was boiled for 30 minutes before use, and after cooling, nitrogen gas was bubbled for 10-20 minutes.

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Abstract

The invention discloses a preparation method and application of hydroxy fatty acid lithium. The preparation method of hydroxy fatty acid lithium comprises: (1) 60 parts by mass of 12 hydroxystearic acid, 4-6 parts by mass of butanediol Alcohol, the citric acid of 0.4-0.6 mass parts, the deionized water of 500 mass parts, adjust pH to 3-4, add in the autoclave after rotating speed 200-500 turns and stir for 1-2 hours; Described deionized water DO is less than 1mg / L; (2) Add 0.2-0.4 parts by mass of lithium citrate hydrate into the autoclave, heat up to 100°C, stir at normal pressure for 0.5-1 hour, then add 4.4-4.6 parts by mass of hydrogen Lithium oxide, put into the autoclave, after airtight, pass nitrogen protection, stir at 220-240°C, 200-400 rpm for 1-2 hours, cool and filter, and wash with hot water. The hydroxy fatty acid lithium of the invention has a smaller particle size, and can improve the dropping point and anti-friction and anti-wear properties of the prepared lithium-based lubricant.

Description

technical field [0001] The invention relates to the technical field of lubricants, in particular to a preparation method and application of lithium hydroxy fatty acid. Background technique [0002] In the extrusion molding process of plastic products, the purpose of internal and external lubricants is to improve its process performance, prevent or reduce the phenomenon of molten material adhering to the metal surface, and ensure the appearance quality of the product, and the additives added to the formula; During the molding process of the molten material, the auxiliary agent that plays a lubricating role and makes the product easy to release from the mold or roll is called a lubricant. The performance requirements of the lubricant are: 1. It must have excellent and long-lasting lubricating performance. 2. It has good compatibility with polymers, and the internal and external lubricating effects should be balanced. It does not affect the transparency of the resin, does not ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10M129/44C10M163/00C10N30/06
CPCC10M129/44C10M163/00C10M2207/128C10M2207/16C10M2215/064C10M2219/044C10N2030/06C10N2010/02C10N2010/04
Inventor 郭向荣王海
Owner BELIKE CHEM
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