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Preparation method of stearate

A technology of stearate and stearic acid, which is applied in the field of stearate preparation, can solve the problems of splashing of reaction materials, violent reaction, uneven reaction, etc., and achieve complete reaction, fast reaction speed and uniform product quality Effect

Active Publication Date: 2017-11-03
郑州庆宏塑胶科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims at the problems of intense local reaction, uneven reaction, and splashing of reaction materials in the current preparation process of stearate. The present invention provides a preparation method of stearate in order to solve the above problems

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Embodiment one: a kind of preparation method of stearate, comprises the following steps:

[0026] a. Add stearic acid to the reaction kettle, heat until partially melted, turn on low-speed stirring to accelerate melting, and keep molten state to obtain material A; the low-speed stirring is adjustable from 0-300r / min;

[0027] b. Prepare a certain amount of zinc oxide, add water and part of zinc oxide to the batching tank, stir to form a suspension and keep stirring, carry out circular grinding through the colloid mill, then add the remaining amount of zinc oxide, and grind for 8 minutes Until the material becomes a slurry, add the catalyst and continue to keep stirring and grinding until a uniform slurry material is obtained to obtain the B material; wherein the stirring speed is 100r / min;

[0028] c. Add material B that has completed step b to material A in the reactor in step a through a colloid mill, and at the same time turn on the built-in homogenizer in the reacto...

Embodiment 2

[0033] a, add stearic acid in the reaction kettle, after heating to partially melted, stearic acid is stirred, until completely melted, keep molten state and obtain A material;

[0034] b. Prepare a certain amount of zinc oxide, add water and part of zinc oxide to the batching tank, stir to form a suspension and keep stirring, carry out circular grinding through the colloid mill, then add the remaining amount of zinc oxide, and grind for 5 minutes Until the material becomes slurry, add the catalyst and continue to keep stirring and grinding until the uniform slurry material obtains B material; wherein the stirring speed is 200r / min;

[0035] c. Add material B that completed step b into material A in the reactor in step a through a colloid mill, and at the same time turn on the built-in high-speed stirring in the reactor, and quickly disperse material A and material B in the reactor through high-speed stirring. Reaction; wherein, the above-mentioned B material is added to the A...

Embodiment 3

[0043] Embodiment 3: Different from Embodiment 1, in the above b step, a certain amount of zinc oxide is prepared, water and part of zinc oxide are added to the batching tank, stirred into a suspension and kept stirring, passed through a colloid mill Carry out circular grinding, then add the remaining amount of zinc oxide, grind for 1 minute until the material becomes a slurry, add the catalyst and continue to keep stirring and grinding until a uniform slurry material is obtained to obtain the B material; wherein the stirring speed is 300r / min;

[0044]In step c, material B that has completed step b is added to material A in the reactor in step a through a colloid mill, and at the same time, the built-in disperser in the reactor is turned on for high-speed stirring, and the material A in the reactor is mixed with B in the reactor through high-speed stirring. The materials are quickly dispersed for uniform reaction; wherein, the above-mentioned B material is added to the A mater...

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Abstract

The invention relates to stearate, in particular to a preparation method of stearate. The preparation method comprises the following steps: adding stearic acid into a reaction kettle, and melting to obtain a material A; adding water and a part of metal oxide into a batching tank, stirring, grinding circularly, adding the remaining amount of metal oxide, adding a catalyst, stirring and grinding to obtain a material B; adding the material B into the material A in the reaction kettle in the step a under the auxiliary stirring of a high-speed dispersing machine; after adding the material B, keeping reacting for 10 to 30 minutes, and gradually heating to 120 DEG C or more till water is gradually evaporated fully to obtain molten stearate; cooling and tableting through a tablet machine to obtain flaky stearate, or spraying the molten stearate to obtain powdery stearate. By adopting the method, intense local reaction, uneven reaction and splashing of reaction materials occurring in a direct adding method are avoided; the reaction speed is high, the reaction is easy to control, and the reaction time is saved.

Description

technical field [0001] The present invention relates to stearate, specifically a kind of preparation method of stearate. Background technique [0002] As an environmental stabilizer, stearate has gradually been widely used, and its production process has 2 types: [0003] (1) Water method: stearic acid reacts with caustic soda to form stearic acid sodium salt; oxide reacts with acid to form salt, the two undergo metathesis reaction, and stearate is obtained by filtering, washing, drying and grinding. This method discharges saline waste water, and the cost is high. [0004] (2) Anhydrous method (also known as dry method): stearic acid is heated and melted, oxide or hydroxide is added, and catalyst is added at the same time, and the reaction is carried out in a molten state. The material is cooled by tableting or other treatments to obtain the product. This method is widely used, but there are inhomogeneous reactions in this method, splashing of materials during the reaction...

Claims

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Application Information

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IPC IPC(8): C07C51/41C07C53/126
CPCC07C51/412C07C53/126
Inventor 谢存明王建军谢瑶琛
Owner 郑州庆宏塑胶科技有限公司
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