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Calcium stearate preparation technology

A calcium stearate and preparation technology, applied in the direction of carboxylate preparation, carboxylate preparation, organic compound preparation, etc., can solve the problems of high chloride and COD, high environmental protection operation cost, environmental pollution, etc., to achieve Reduce fluidity, reduce dust pollution, and not easy to suspend

Inactive Publication Date: 2014-06-25
QINGDAO SHUAIWANG OIL CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The calcium stearate produced by this method is a very light powder structure with good fluidity. It will be suspended in the air during use, causing pollution to the environment. At the same time, dust will be inhaled when working in this environment. directly affect the respiratory system
This method produces more aqueous solutions in the production process, and every production of 1 ton of calcium stearate needs to consume 20 tons of water. The chloride and COD in the produced aqueous solution are too high, which cannot be used for recycling and cause a large amount of pollution.
The calcium stearate powder produced by the current calcium stearate process has the problems of excessive fluidity and high environmental protection and operating costs.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] A kind of preparation technology of calcium stearate, comprises the following steps:

[0013] (1) Add 40-45 parts of stearic acid, 10-15 parts of calcium hydroxide, 1-5 parts of zinc oxide and 20-30 parts of distilled water into the reaction kettle and stir evenly;

[0014] (2) After stirring evenly, the reaction kettle starts to heat up, and the vacuum system is turned on at the same time, and the temperature rises to 90 degrees Celsius;

[0015] (3) By sampling and analyzing free acid and calcium hydroxide, it is determined that there is no calcium hydroxide and the free acid is less than 0.5% for 3 consecutive times, that is, the reaction is over;

[0016] (4) Separate the product from the raw material, and dry the product to make the moisture less than 2%, and then obtain the calcium stearate product.

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PUM

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Abstract

The invention discloses a calcium stearate preparation technology. The technology comprises the following steps: 1, adding 40-45 parts ofstearic acid, 10-15 parts of calcium hydroxide, 1-5 parts of zinc oxide and 20-30 parts of distilled water into a reaction kettle, and uniformly stirring; 2, heating the reaction kettle to 90DEG C while starting a vacuum system; 3, sampling, analyzing free acids and calcium hydroxide, and ending the reaction if continuous three-time detection results show that the content of calcium hydroxide is zero and the content of the free acids is smaller than 0.5%; and 4, separating the obtained product from raw materials, and drying the product until the water content is smaller than 2% in order to obtain the calcium stearate product. The product prepared in the invention has the advantages of large density, reduced fluidity, unlikely suspension in air, and reduction of the dust pollution.

Description

technical field [0001] The invention relates to a preparation process of calcium stearate. Background technique [0002] Calcium stearate is a non-toxic heat stabilizer and lubricant for polyvinyl chloride products, and an indispensable auxiliary product for the processing of polyvinyl chloride plastic products. At present, the method of domestic production of calcium stearate products is mostly to use stearic acid and aqueous solution of hydrogen oxidizer to saponify to make sodium stearate, then carry out metathesis with calcium chloride aqueous solution and sodium stearate to generate calcium stearate, and finally carry out Washing with water removes chloride ions and uranium ions to obtain calcium stearate. The calcium stearate produced by this method is a very light powder structure with good fluidity. It will be suspended in the air during use, causing pollution to the environment. At the same time, dust will be inhaled when working in this environment. Directly affe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C53/126C07C51/41
CPCC07C51/412
Inventor 王明夫
Owner QINGDAO SHUAIWANG OIL CHEM
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