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Magnesium stearate and preparation process thereof

A magnesium stearate and a preparation process technology, applied in the chemical field, can solve the problems of poor magnesium stearate product quality, high dependence on imported products, serious environmental pollution, etc., and achieve high yield, low production cost, color and luster. Good results

Active Publication Date: 2016-09-21
HUIZHOU AIMSEA NEWWAY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The magnesium stearate produced by most domestic magnesium stearate manufacturers has small production scale, high production cost, serious environmental pollution in the production process, poor quality of the prepared magnesium stearate product, and high free acid content. It cannot meet the demand for magnesium stearate in the domestic market, and is more dependent on imported products

Method used

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  • Magnesium stearate and preparation process thereof
  • Magnesium stearate and preparation process thereof
  • Magnesium stearate and preparation process thereof

Examples

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Effect test

Embodiment 1

[0028] The preparation of embodiment 1 magnesium stearate

[0029] S1: Take tristearin, stir while feeding, keep the temperature at 100°C, add catalyst A, antioxidant and water after the tristearin is completely melted, at a temperature of 130°C and a pressure of 0.7MPa Carry out hydrolysis reaction under the condition of condition, hydrolyzate stands still 45min, oil and water are separated, and oil phase pressure filtration reclaims catalyst and promptly obtains stearic acid;

[0030] Wherein, by mass ratio, in catalyst A, magnesium oxide: Al 2 o 3 -MgO is 1:8, its dosage is 4% of the mass of glyceryl tristearate, Al 2 o 3 -MgO is prepared by precipitation method, in molar ratio, Al 2 o 3 :MgO is 2:1;

[0031] In terms of mass ratio, in antioxidants, antioxidant 1076: antioxidant DLTDP: antioxidant T501 is 0.5: 0.65: 1, and its consumption is 0.5% of the glyceryl tristearate quality;

[0032] By mass ratio, glyceryl tristearate: water is 1: 0.5;

[0033] S2: Add the ...

Embodiment 2

[0038] The preparation of embodiment 2 magnesium stearate

[0039] S1: Take glyceryl tristearate, stir while feeding, keep the temperature at 80°C, add catalyst A, antioxidant and water after the glyceryl tristearate is completely melted, at a temperature of 140°C, and a pressure of 0.6MPa Carry out hydrolysis reaction under the condition of condition, hydrolyzate stands still 50min, oil-water separation, oil phase pressure filtration reclaims catalyst and promptly obtains stearic acid;

[0040] Wherein, by mass ratio, in catalyst A, magnesium oxide: Al 2 o 3 -MgO is 1:7, its dosage is 5% of the mass of glyceryl tristearate, Al 2 o 3 -MgO is prepared by precipitation method, in molar ratio, Al 2 o 3 :MgO is 2.5:1;

[0041] In terms of mass ratio, in antioxidants, antioxidant 1076: antioxidant DLTDP: antioxidant T501 is 0.4: 0.6: 1, and its consumption is 0.6% of tristearin quality;

[0042] By mass ratio, glyceryl tristearate: water is 1: 0.6;

[0043] S2: Add the stea...

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Abstract

The invention belongs to the technical field of chemical engineering, and particularly relates to magnesium stearate and a preparation process thereof. The preparation process includes the following steps: (1) subjecting tristearin and water to hydrolysis under the action of catalyst and antioxidant; (2) adding magnesium oxide and catalyst step by step, and performing condensation, dehydration and salifying to synthesize magnesium stearate. The magnesium stearate provided is industrial-grade magnesium stearate, and is low in raw material cost, high in production yield, good in color, low in free acid content and stable in quality. In the preparation process of magnesium stearate, discharge of wastewater containing chlorine and sulfate ions is avoided, the production process is safe and environment friendly, and overall production cost is low. The provided magnesium stearate is high in quality, and is more practical and comparable than similar products on the market in practical application.

Description

technical field [0001] The invention belongs to the technical field of chemical industry, and in particular relates to a magnesium stearate and a preparation process thereof. Background technique [0002] Magnesium stearate is a kind of stearate, also known as magnesium stearate, which has the dual characteristics of metal salt and stearic acid. Magnesium stearate is widely used in the pharmaceutical industry. It is an important lubricant for pharmaceutical tablets. It can also be used as an additive for cosmetics, paints and plastics. Food grade magnesium stearate can be used as a food processing aid. Magnesium stearate is an excellent lubricating and dispersing stabilizer for plastic rubber, a release agent for plastic products, a high temperature resistant powder film agent for rubber products, and can also be used as a PVC heat stabilizer to increase the transparency or translucency of the product. In addition, magnesium stearate can be used as a drier and flattening ag...

Claims

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Application Information

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IPC IPC(8): C07C51/41C07C53/126
CPCC07C51/09C07C51/412C07C53/126
Inventor 严一丰严睛
Owner HUIZHOU AIMSEA NEWWAY TECH CO LTD
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