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Preparation and purification method of butyl stearate

A technology of butyl stearate and refining method, which is applied in the field of lubricants, can solve the problems of prolonging the production cycle, increasing the cost of production enterprises, and low production efficiency, so as to avoid equipment investment, reduce production cost, and save equipment investment Effect

Inactive Publication Date: 2010-12-15
TIANJIN CHEM REAGENT RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present process for making lightweight butter-like substances involves mixing different materials together with an acidic solution called bile acids or other chemical agents like dialkoxybenzoic acid (DOB) that react quickly at room temperature to form esters on certain molecules containing calcium atoms. These products are then separated from each other by evaporation techniques such as distillations under reduced pressure. By doing these steps, it provides a cost-effective way to make heavier yet more colored butters than current methods while maintaining their qualities.

Problems solved by technology

This technical problem addressed by this patented technology relates to improving the economics of producing butylenesulfonic acid (BSA) while reducing costs associated with its manufacture through improved purity levels without requiring multiple steps or expensive equipment during decomposition reactions.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A kind of preparation and refining method of butyl stearate, the steps are as follows:

[0026] (1) Esterification reaction step

[0027] Put 100 kg of stearic acid, 65 kg of butanol, and 0.1 kg of concentrated sulfuric acid into a 200-liter reactor with heating device, electric stirring, thermometer, water circulation condenser and oil-water separator, and heat to boiling reaction while stirring , keep the boiling reflux state, continuously separate the water from the oil-water separator until no water is generated, stop heating, and the esterification reaction is terminated;

[0028] Wherein: stearic acid: n-butanol: the weight ratio of concentrated sulfuric acid is 1: 0.65: 0.001-0.005.

[0029] (2) Washing step

[0030] Add 50 kilograms of water to the mixed solution obtained after the esterification reaction, stir evenly, let stand to separate layers, and remove the water layer therein;

[0031] Wherein: the weight ratio of water and stearic acid is 0.5: 1.

[...

Embodiment 2

[0039] A kind of preparation and refining method of butyl stearate, the steps are as follows:

[0040] (1) Esterification reaction step

[0041] Put 100 kg of stearic acid, 65 kg of butanol, and 0.1 kg of concentrated sulfuric acid into a 200-liter reactor with heating device, electric stirring, thermometer, water circulation condenser and oil-water separator, and heat to boiling reaction while stirring , keep the boiling reflux state, continuously separate the water from the oil-water separator until no water is generated, stop heating, and the esterification reaction is terminated;

[0042] (2) Washing step

[0043] Add 50 kilograms of water to the mixed solution obtained after the esterification reaction, stir evenly, let stand to separate layers, and remove the water layer therein;

[0044] (3) distillation desolventization step

[0045] The mixture washed with water was distilled to remove excess butanol, the distillation temperature was 110-120°C and the vacuum degree...

Embodiment 3

[0049] A kind of preparation and refining method of butyl stearate, the steps are as follows:

[0050] (1) Esterification reaction step

[0051] Put 100 kg of stearic acid, 65 kg of butanol, and 0.1 kg of concentrated sulfuric acid into a 200-liter reactor with heating device, electric stirring, thermometer, water circulation condenser and oil-water separator, and heat to boiling reaction while stirring , keep the boiling reflux state, continuously separate the water from the oil-water separator until no water is generated, stop heating, and the esterification reaction is terminated;

[0052] (2) Washing step

[0053] Add 50 kilograms of water to the mixed solution obtained after the esterification reaction, stir evenly, let stand to separate layers, and remove the water layer therein;

[0054] (3) distillation desolventization step

[0055] The mixture washed with water was distilled to remove excess butanol, the distillation temperature was 110-120°C and the vacuum degree...

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Abstract

The invention relates to preparation and a purification method of butyl stearate. The preparation comprises the following steps of: putting stearic acid, butanol and concentrated sulfuric acid into a reaction kettle in turn; stirring and simultaneously heating to boiling reaction; keeping a boiling reflux state and continuously separating water out of an oil-water separator till water is not generated; stopping heating to terminate esterification reaction; washing; distilling for removing a solvent; and refining to obtain liquid, namely the finished product of the butyl stearate. By saving a high-vacuum refining step in the production process, the preparation method has the advantages of avoiding using a high-vacuum pump, saving equipment investment, reducing production cost, shortening the whole production cycle, improving production efficiency, and contributing to the realization of industrial production of the whole scheme.

Description

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Claims

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Application Information

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Owner TIANJIN CHEM REAGENT RES INST
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