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A kind of barium stearate and preparation technology thereof

A barium stearate and preparation technology, applied in the chemical industry, can solve the problems of high free acid content, high production cost, and large drying energy consumption, and achieve the effects of low free acid content, low production cost, and low raw material cost

Active Publication Date: 2018-06-19
HUIZHOU AIMSEA NEWWAY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method prepares barium stearate without additive, without waste water discharge, has reduced production cost to a certain extent, but the wet barium stearate filter cake that separates and obtains in the preparation process has high moisture content, and the drying energy consumption is large, and the dust flying is serious and Problems such as high apparent density of the product
[0005] The barium stearate produced by most domestic barium stearate manufacturers has high production cost in varying degrees, serious environmental pollution in the production process, large energy consumption or the prepared barium stearate according to the chemical industry standard of the People's Republic of China "HG / T2338-1992 Barium Stearate"The test indicators are not up to standard, especially the high content of free acid and low melting point. The preparation process and product quality still need to be further improved

Method used

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  • A kind of barium stearate and preparation technology thereof
  • A kind of barium stearate and preparation technology thereof
  • A kind of barium stearate and preparation technology thereof

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Experimental program
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Effect test

Embodiment 1

[0030] The preparation of embodiment 1 barium stearate

[0031] S1: Take glyceryl tristearate, stir while feeding, keep the temperature at 100°C, add catalyst A, antioxidant and water after the glyceryl tristearate is completely melted, at a temperature of 140°C, and a pressure of 0.7MPa 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;

[0032] Wherein, by mass ratio, in catalyst A, magnesium oxide: Al 2 o 3 -MgO is 1:6, 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 2:1;

[0033] In terms of mass ratio, in antioxidants, antioxidant DLTDP: antioxidant T501 is 0.5: 1, and its consumption is 0.4% of tristearin quality;

[0034]By mass ratio, glyceryl tristearate: water is 1: 0.5;

[0035] S2: Add the stearic acid in S1 in...

Embodiment 2

[0039] The preparation of embodiment 2 barium stearate

[0040] 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, a pressure of 0.6MPa Carry out hydrolysis reaction under the condition of condition, hydrolyzate stands still 60min, oil-water separation, oil phase pressure filtration reclaims catalyst and promptly obtains stearic acid;

[0041] Wherein, by mass ratio, in catalyst A, zinc hydroxide: Al 2 o 3 -MgO is 1:4, its dosage is 7% 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 3:1;

[0042] In terms of mass ratio, in antioxidants, antioxidant DLTDP: antioxidant T501 is 0.4: 1, and its consumption is 0.5% of tristearin quality;

[0043] By mass ratio, glyceryl tristearate: water is 1: 0.6;

[0044] S2: Add the stearic acid in S1 into the barium stearate reaction ket...

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Abstract

The invention belongs to the technical field of chemical engineering and particularly relates to barium stearate and a preparation process thereof. Barium stearate is prepared from glyceryl tristearate, a catalyst A, antioxidant, water, barium hydroxide, a catalyst B and sodium hydroxide. The catalyst A is a mixture of magnesium oxide and Al2O3-MgO, and the antioxidant is a mixture of antioxidant DLTDP and antioxidant T501. The catalyst B is selected from one or more of peroxide. Barium stearate is low in raw material cost, high in yield, low in free acid content and stable in performance, and relevant quality indexes meet the requirements of the People's Republic of China chemical industry standard <HG / T2338-1992 barium stearate (light)> for superior products. According to the preparation process of barium stearate, the production course is safe and environmentally friendly, energy consumption is low, the total production cost is low, and higher practicality and comparability are achieved compared with 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 barium stearate and a preparation process thereof. Background technique [0002] Barium stearate is a kind of stearate, which has good long-term heat resistance and lubricity, and can be used as a light-resistant and heat-resistant stabilizer and lubricant for polyvinyl chloride. Among all stearates of alkaline earth metals, barium stearate has the best long-term heat resistance, and is mainly used for soft transparent films, thin plates, artificial leather, hard plates, tubes, etc., and can also be used for high temperature resistant mold release High-temperature lubricants for lubricants and machinery are widely used, and the market demand is increasing year by year. [0003] At present, the methods for producing barium stearate in China mainly include double decomposition method, saponification method and direct method. The metathesis method is that s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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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