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A kind of propylene glycol monostearate and its industrial production method and application

A technology of propylene glycol monostearate and monostearate, which is applied in the directions of application, carboxylate preparation, chemical apparatus and method, etc., to achieve the effects of improving cake quality, increasing cake volume, and easily controlling conditions

Active Publication Date: 2017-11-14
GUANGZHOU CARDLO BIOCHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After searching, no application of the compound composition of propylene glycol monostearate and tripolyglycerol monostearate in cakes was found

Method used

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  • A kind of propylene glycol monostearate and its industrial production method and application
  • A kind of propylene glycol monostearate and its industrial production method and application
  • A kind of propylene glycol monostearate and its industrial production method and application

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Effect test

Embodiment 1

[0022] Embodiment 1, propylene glycol monostearate industrial production method of the present invention

[0023] S1, 91.3kg of 1,2-propanediol and 113.8kg of stearic acid are heated and melted respectively and then filtered;

[0024] S2. Pump 1,2-propylene glycol into the reaction kettle, add 0.10% sodium carbonate by weight of 1,2-propylene glycol, stir and mix for 30 minutes, then pump stearic acid into the reaction kettle, control the reaction temperature to 175°C, and the vacuum degree to be 0.07MPa, carry out esterification reaction for 3h;

[0025] S3, the esterification reaction is completed, the material is discharged into the neutralization tank, and 0.15% phosphoric acid by weight of 1,2-propylene glycol is added, and the neutralization reaction is carried out at 145°C for 0.8h;

[0026] S4, neutralization reaction finishes and obtains crude ester, discharges to storage tank and stands still;

[0027] S5, transfer the crude ester to the distiller for four-stage di...

Embodiment 2

[0028] Embodiment 2, propylene glycol monostearate industrial production method of the present invention

[0029] S1, 60.9kg of 1,2-propanediol and 113.8kg of stearic acid were heated and melted respectively and then filtered;

[0030] S2. Pump 1,2-propanediol into the reactor, add 0.30% sodium bicarbonate by weight of 1,2-propylene glycol, stir and mix for 25 minutes, then pump stearic acid into the reactor, control the reaction temperature to 160°C, vacuum to 0.08MPa, carry out the esterification reaction for 4h;

[0031] S3, the esterification reaction is completed, the material is discharged into the neutralization tank, and 0.35% phosphoric acid by weight of 1,2-propylene glycol is added, and the neutralization reaction is carried out at 140 ° C for 1 hour;

[0032] S4, neutralization reaction finishes and obtains crude ester, discharges to storage tank and stands still;

[0033] S5, transfer the crude ester to a distiller for four-stage distillation, wherein the condit...

Embodiment 3

[0034] Embodiment 3, propylene glycol monostearate industrial production method of the present invention

[0035] S1, 121.7kg of 1,2-propanediol and 113.8kg of stearic acid are heated and melted respectively and then filtered;

[0036] S2. Pump 1,2-propylene glycol into the reaction kettle, add 0.20% sodium hydroxide by weight of 1,2-propylene glycol, stir and mix for 35 minutes, then pump stearic acid into the reaction kettle, control the reaction temperature to 180°C, vacuum 0.06MPa, carry out the esterification reaction for 2h;

[0037] S3, the esterification reaction is completed, the material is discharged into the neutralization tank, and 0.25% phosphoric acid by weight of 1,2-propylene glycol is added, and the neutralization reaction is carried out at 150°C for 0.5h;

[0038] S4, neutralization reaction finishes and obtains crude ester, discharges to storage tank and stands still;

[0039] S5, transfer the crude ester to the distiller for four-stage distillation, wher...

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Abstract

The invention discloses propylene glycol monostearate, and an industrial production method and an application of propylene glycol monostearate. The industrial production method comprises: S1, heating 1,2-propylene glycol and stearic acid to melt, respectively, and performing filtration; S2, pumping 1,2-propylene glycol into a reaction kettle, adding an alkali catalyst, performing stirring and mixing, pumping stearic acid into the reaction kettle, controlling the reaction temperature and the vacuum degree, and performing an esterification reaction; S3, after the esterification reaction is over, discharging the obtained product into a neutralizing kettle, adding phosphoric acid, and performing a neutralization reaction; S4, obtaining crude ester after the neutralization reaction is over, and discharging the obtained product to a storage tank for standing; and S5, transferring crude ester to a distiller for four-level distillation and collecting the fraction of the four-level distillation to obtain propylene glycol monostearate with the purity more than 99%. The method is suitable for mass industrial production, and is simple in process and easy in condition control. An emulsifying composition compounded by prepared propylene glycol monostearate and terpolyglycerol monostearate can be applicable to a cake, thereby improving the quality of the cake.

Description

technical field [0001] The invention belongs to the chemical field, and in particular relates to a kind of propylene glycol monostearate, its industrial production method and the application of its emulsified composition in cakes. Background technique [0002] Propylene glycol fatty acid ester is a kind of synthetic food additive developed in the 1950s. It has good foaming and emulsifying properties. Its foaming ability depends on the content of monoester. The higher the content of monoester, the better the performance , which is often used as a foaming agent for pastries and cream cakes. As a food emulsifier, propylene glycol fatty acid ester is second only to monoglyceride, sorbitan ester, soybean lecithin and other varieties in foreign countries. It is one of the six largest food emulsifiers in the world. [0003] Propylene glycol monostearate is the main species of propylene glycol fatty acid ester. At present, there are two main methods for the synthesis of propylene ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C69/28C07C67/08C07C67/54A23L29/10A21D2/16
CPCA21D2/16C07C67/08C07C67/54C07C69/28
Inventor 徐怀义
Owner GUANGZHOU CARDLO BIOCHEM TECH
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