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Preparation method of sorbitan oleate

A technology of sorbitan oleate and oleic acid, which is applied in the field of preparation of sorbitan oleate, achieves the effects of high stability, improved performance and reduced color

Active Publication Date: 2016-11-30
GUANGZHOU CARDLO BIOCHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In order to solve the defects of preparing sorbitan oleate in the prior art, the object of the invention is to provide a kind of preparation method of sorbitan oleate with simple production process, good product color, strong emulsifying performance and high stability, to solve the above defect

Method used

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  • Preparation method of sorbitan oleate
  • Preparation method of sorbitan oleate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Embodiment 1, a kind of preparation of sorbitan oleate

[0028] S1 gets the solid sorbitol powder and places it in the reactor, raises the temperature to 90° C., stirs to a molten state, adds catalyst I, and the addition amount of the catalyst I is 4% of the solid sorbitol powder weight, and the catalyst I consists of four Butylammonium bromide and p-toluenesulfonic acid are composed of 3:2 by weight, stirred evenly, dehydrated at a temperature of 100°C and a vacuum of 0.006MPa for 2 hours, filtered, and added activated carbon when the temperature was lowered to 35°C. 50min, the addition of the activated carbon is 0.3% of the total weight of solid sorbitol powder and catalyst I, the average particle diameter of the activated carbon is 48 μm, filtered, concentrated, and dried to obtain 1,4-sorbitol;

[0029] S2 adds oleic acid and catalyst II to the 1,4-sorbitan that step S1 obtains, and the weight ratio of described 1,4-sorbitan and oleic acid is 1:1.72, the addition am...

Embodiment 2

[0030] Embodiment 2, a kind of preparation of sorbitan oleate

[0031] S1 gets the solid sorbitol powder and places it in the reactor, raises the temperature to 95° C., stirs to a molten state, adds catalyst I, and the addition amount of the catalyst I is 3% of the solid sorbitol powder weight, and the catalyst I consists of four Butylammonium bromide and p-toluenesulfonic acid are composed of 4:1 by weight, stirred evenly, dehydrated at a temperature of 105°C and a vacuum of 0.008MPa for 1 hour, filtered, and added activated carbon when the temperature was lowered to 40°C. 40min, the addition of the activated carbon is 0.4% of the total weight of solid sorbitol powder and catalyst I, the average particle diameter of the activated carbon is 50 μm, filtered, concentrated, and dried to obtain 1,4-sorbitol;

[0032]S2 adds oleic acid and catalyst II to the 1,4-sorbitan that step S1 obtains, and the weight ratio of described 1,4-sorbitan and oleic acid is 1:1.82, the addition amou...

Embodiment 3

[0033] Embodiment 3, a kind of preparation of sorbitan oleate

[0034] S1 gets the solid sorbitol powder and places it in the reactor, raises the temperature to 100° C., stirs to a molten state, adds catalyst I, and the addition amount of the catalyst I is 2% of the solid sorbitol powder weight, and the catalyst I consists of four Butylammonium bromide and p-toluenesulfonic acid are composed of 5:0.5 by weight, stirred evenly, dehydrated at a temperature of 115°C and a vacuum of 0.01MPa for 1 hour, filtered, and added activated carbon when the temperature was lowered to 45°C. 30min, the addition amount of described gac is 0.5% of the total weight of solid sorbitol powder and catalyst 1, the average particle diameter of described gac is 55 μ m, filter, concentrate, dry, obtain 1,4-sorbitol;

[0035] S2 adds oleic acid and catalyst II to the 1,4-sorbitan that step S1 obtains, and the weight ratio of described 1,4-sorbitan and oleic acid is 1:1.95, the addition amount of describe...

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Abstract

The invention belongs to the technical field of chemical synthesis, and particularly relates to a preparation method of sorbitan oleate. The preparation method comprises: adding a catalyst I, dehydrating solid sorbitol powder to obtain 1,4-sorbitan, adding oleic acid and a catalyst II, and carrying out an esterification reaction of oleic acid and 1,4-sorbitan to obtain sorbitan oleate to obtain sorbitan oleate. According to the method, the phenomenon that sediment is generated during storage of sorbitan oleate is prevented, the appearance and color of sorbitan oleate is prevented, and the exterior quality is effectively improved. Sorbitan oleate obtained from the method is good in emulsifying property and stability, and the application range of sorbitan oleate is extended.

Description

technical field [0001] The invention belongs to the technical field of chemical synthesis, and in particular relates to a preparation method of sorbitan oleate. Background technique [0002] Sorbitan oleate, (also known as Span 80, sorbitan monooleate), is obtained by the esterification reaction of sorbitol and oleic acid, and its hydrophilic-lipophilic balance value (HLB value) is 4.3, which can be compared with The oil phase is miscible to form a water-in-oil emulsifier, which has excellent emulsifying, dispersing, foaming and wetting properties, and is a very important non-ionic surfactant. Sorbitan oleate is not only widely used in emulsifiers for emulsified explosives, textile oil monomers, demulsifiers and rust inhibitors in oil fields, but also in the fields of food, medicine and cosmetics. It is one of the most used emulsifiers in my country. one. [0003] The traditional sorbitan oleate is etherified and esterified sorbitol and oleic acid in one step with an alkali...

Claims

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Application Information

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IPC IPC(8): C07D307/20
CPCC07D307/20
Inventor 徐怀义
Owner GUANGZHOU CARDLO BIOCHEM TECH
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