Process for preparing wool fat aklaline earth metal soap

A technology of alkaline earth metal soap and alkaline earth metal, which is applied in the field of preparation of lubricating grease additives, can solve the problems of waste, high reaction temperature, and long reaction time, and achieve the effects of avoiding sewage discharge, speeding up the reaction speed, and eliminating the washing process

Inactive Publication Date: 2003-04-09
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The advantage of this method is that the response is fast, and the disadvantage is that the washing process brings about sewage discharge and waste of water resources.
[0003] JP 57117598 discloses a method for producing lanolin alkaline earth metal soap by one-step reaction, which is to react lanolin directly with calcium hydroxide under normal pressure, but the reaction temperature is high, reaching 190°C, and the reaction time is long, which is not conducive to Industrial production

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0012] Take by weighing lanolin 100g, put into 2L reactor, add calcium hydroxide 7.4g (excess 10%), water 600g, aviation lubricating oil 100g, heating and stirring, reaction temperature 95 ℃, reaction time 22 hours. The product was dissolved in petroleum ether, the insoluble matter was filtered off, the filtrate was heated, the petroleum ether was evaporated, and the calcium content of the residue was measured. The measured results show that the calcium content is 2.5%, and the conversion rate is 69.06%.

example 2

[0014] Weigh 200g of lanolin and put it into a 2L reactor, add 20.3g of calcium hydroxide (50% excess), 700g of water, and 50g of n-propanol. Heat and stir, the reaction temperature is 95°C, and the reaction time is 9 hours. After the product was treated with petroleum ether, the calcium content was measured to be 2.65%, and the conversion rate was 73.20%.

example 3

[0016] Take lanolin 2000g, put into 20L pressure stirred kettle (reaction pressure is 0.36Mpa), add calcium hydroxide 148g (excessive 10%), water 2000g, 500SN base oil 2000g, heat up and stir, reaction temperature is 145 ℃, reaction After 2.5 hours, the calcium content of the product was 2.84%, and the conversion rate was 78.45%. After 7.5 hours of reaction, the calcium content of the product was 2.92%, and the conversion rate was 80.66%.

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Abstract

The preparation process of wool fat alkaline earth metal soap includes the saponification between wool fat and alkali of alkaline earth metal at 0.1-0.5 MPa and 70-170 deg.c in the presence of water or water and organic solvent. The saponificatino reaction has controlled reaction pressure and proper solvent, and thus fast reaction speed, high conversion rate and no introduction of strong alkali and strong acid salt can omit the water washing process and avoid exhaust of sewage.

Description

technical field [0001] The invention belongs to a preparation method of lubricating oil additives, specifically, a preparation method of lanolin alkaline earth metal soap. Background technique [0002] The method for producing lanolin alkaline earth metal soap in the prior art mainly contains two kinds, and a kind of is two-step method, as described in CN 86100362, is to react lanolin and sodium hydroxide solution earlier, generate lanolin sodium soap, then add Divalent metal salt, the reaction product is washed with water and filtered to obtain lanolin alkaline earth metal soap. The advantage of this method is that the response is fast, and the disadvantage is that the water washing process brings about the problems of sewage discharge and waste of water resources. [0003] JP 57117598 discloses a method for producing lanolin alkaline earth metal soap by one-step reaction, which is to react lanolin directly with calcium hydroxide under normal pressure, but the reaction tem...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11C3/04
Inventor 刘中其
Owner CHINA PETROLEUM & CHEM CORP
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