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Technique for preparing calcium zinc stearate

A preparation process, a technology of zinc stearate, applied in the direction of organic chemistry, etc., can solve problems such as high price, and achieve the effects of eliminating pollution, good production environment and stable product quality

Inactive Publication Date: 2008-09-03
上海欣鑫化工有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, there is no zinc calcium stearate production enterprise in China, so the zinc calcium stearate used by domestic polyethylene production enterprises is imported from abroad, and the price is expensive

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Add 1-3 tons of water to the reaction kettle, add 300 kg of stearic acid, 20-25 kg of calcium hydroxide (or 15-20 kg of calcium oxide), 30-35 kg of basic zinc carbonate, and heat up to 60- 100°C, reacted for 1.5 hours, then dehydrated and dried to obtain 321.5 kg of the product.

Embodiment 2

[0021] Add 1-3 tons of water to the reaction kettle, add 300 kg of stearic acid, 20-25 kg of calcium carbonate (or 30-35 kg of calcium acetate), 30-35 kg of basic zinc carbonate, (or zinc hydroxide 25-30 kg, or zinc acetate), heated up to 70°C, reacted for 1.5 hours, then dehydrated and dried to obtain the product.

Embodiment 3

[0023] Add 1-3 tons of water to the reaction kettle, stir 45-50 kg of calcium sulfate (or calcium salts such as calcium chloride and calcium nitrate), and 10-12 kg of sodium hydroxide (you can also use sodium carbonate, potassium hydroxide, sodium bicarbonate), warming up to 50-70°C, reacting for 0.5 hour, then adding 300 kg of stearic acid, 30-35 kg of basic zinc carbonate (or zinc hydroxide, or zinc carbonate or zinc nitrate, or zinc chloride) , heated to 90°C, reacted for 1.5 hours, then dehydrated and dried to obtain the product.

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PUM

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Abstract

This invention relates to a method for producing zinc calcium stearate. The method comprises: adding water into a reaction kettle, adding stearic acid, calcium source and zinc source under stirring, heating to 50-100 deg.C, reacting for 1-2 h, dehydrating and drying to obtain zinc calcium stearate. Compared with present techniques, the method has stable process, stable product quality, adequate water circulation and good production conditions.

Description

technical field [0001] The invention relates to the field of preparation of an anti-acid agent and a stabilizer, in particular to a preparation process of calcium zinc stearate used as an anti-acid agent in the production of polyethylene resin. Background technique [0002] A catalyst needs to be added in the production process of polyethylene resin. The catalyst is acidic, and there is inevitably a small amount of catalyst remaining in the product polyethylene resin. The presence of these residual acidic catalysts will slowly release halogen ions, such as Cl - , This will cause corrosion to the resin processing control equipment, and at the same time, the stability and weather resistance of the resin will be reduced during storage and processing, and resin degradation or yellowing will occur. Therefore, an anti-acid agent, namely calcium zinc stearate, must be added in the production of polyethylene. Zinc calcium stearate can capture Cl - , and then reacted with it, elimi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C53/126
Inventor 王坤方
Owner 上海欣鑫化工有限公司