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Pentaerythritol stearate preparation method

A technology for pentaerythritol and stearic acid ester, applied in the field of preparation of pentaerythritol stearic acid ester, can solve the problems of low product yield, unsatisfactory purity and the like, and achieve the effects of simple steps, easy control and high yield

Active Publication Date: 2006-02-22
山东瑞捷新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The problem to be solved in the present invention is to overcome the defects of low yield and unsatisfactory purity of the product in the preparation method of existing pentaerythritol stearate, and provide a kind of preparation method of pentaerythritol stearate, prepared by the inventive method The purity of pentaerythritol stearate is high, and the purity can reach more than 98%.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Put 1000kg of stearic acid of model 4989 into a stainless steel melting tank, heat it with steam to 60°C, and melt it completely. Vacuum and keep at 0.01Kpa, the heat conduction oil is heated to 150°C, the heat conduction oil is heated through the furnace and heated by the pump in the grease tank through the pipeline. Carry out the lipidation reaction for 3 hours, the pH is less than 5, the reaction is completed, the temperature is lowered to 100 ° C, after filtration, the pump is sent to the slicer through the pipeline, sliced, and the slicer is cooled by water to make the pentaerythritol stearate adhere to the roller. The knife scrapes off the product on the roller to form slices.

Embodiment 2

[0021] Put 1000kg of stearic acid of model 1861 into a stainless steel melting tank, heat it with steam to 100°C, and melt it completely. The raw material is pumped from the melting tank through a pipeline and sent to the fatification tank. Add 200kg of pentaerythritol and 10kg of NaOH, vacuumize, and keep At 0.01Kpa, the heat conduction oil is heated to 260°C, and the heat conduction oil is heated through the furnace and heated by the pump in the grease tank through the pipeline. Carry out the lipidation reaction for 5 hours, the pH is less than 5, the reaction is completed, the temperature is lowered to 150°C, and after filtration, the pump is sent to the slicer through the pipeline, sliced, and the slicer is cooled by water to make the pentaerythritol stearate adhere to the roller. The knife scrapes off the product on the roller to form slices.

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PUM

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Abstract

The invention provides a process for preparing pentaerythrite stearic grease, wherein the raw material includes (by weight ratio): pentaerythritol 1-2 parts, stearic acid 10 parts, stannous chloride or NaOH 0.02-0.1 part. The process consists of charging stearic acid into stainless steel melting tanks, steam heating to 60-100 deg C, charging normosterol and stannous chloride or NaOH, vacuum-pumping and heating heat conductive oil to 150-260 deg. C, carrying out esterification 3-5 hours, detecting pH<5, lowering the temperature to 100-150 deg. C and filtering.

Description

【Technical field】 [0001] The invention relates to a preparation method of pentaerythritol stearate. 【Background technique】 [0002] Pentaerythritol is a white or slightly yellow crystalline powder. Soluble in water, slightly soluble in ethanol, insoluble in benzene, ether and petroleum ether, etc. It is easy to react with common organic acids to form esters. Co-heating with dilute lye is not affected. Mainly used in transportation materials, explosives, plastics and other industries. [0003] Stearic acid is a saturated fatty acid mainly composed of C16 and C18. It is a white flaky solid at room temperature, insoluble in water, slightly soluble in benzene and carbon disulfide, easily soluble in hot ethanol, non-toxic and tasteless, and has the general chemical properties of organic carboxylic acids. Generality. Widely used in rubber vulcanizing agent, plastic heat stabilizer, lubricant, textile softener, chemical fiber oil, antistatic agent, food emulsifier, cosmetic de...

Claims

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Application Information

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IPC IPC(8): C07C69/33C07C67/08
Inventor 张宪明
Owner 山东瑞捷新材料有限公司
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