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Method for preparing zinc stearate having hydrophilicity

A technology capable of zinc stearate and hydrophilicity, applied in the field of plastic processing aids, can solve problems such as the inability to obtain customers, achieve controllable hydrophilicity, high economic and social benefits, and broaden the field of use Effect

Inactive Publication Date: 2010-12-15
DONGGUAN CHNV TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the rubber industry and the amino molding compound industry, zinc stearate is required to have good hydrophilic properties, so direct method products have not been able to get the affirmation of customers and enter the above two industries

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Put 1400kg of stearic acid into the normal-pressure reactor and heat up to dissolve it. After the stearic acid is dissolved, start stirring. When the temperature rises to 125°C, put 125kg of zinc oxide into the reactor and add 30kg of water as a catalyst; react for 30 minutes Then put 85kg of zinc oxide into the reaction kettle, add 10kg of water and 4kg of acetic acid as catalysts, add 4kg of hydrogen peroxide and 2kg of citric acid after 30 minutes, add 2kg of modification additives after 30 minutes and stir for 10 minutes before discharging. The temperature is maintained at 125°C to 175°C throughout the process.

Embodiment 2

[0023] Put 1400kg of stearic acid into the normal pressure reactor and heat up to dissolve it. After the stearic acid is dissolved, start stirring. When the temperature rises to 130°C, put 125kg of zinc oxide into the reactor and add 30kg of water as a catalyst; react for 30 minutes Then put 86kg of zinc oxide into the reactor, add 10kg of water, 3kg of hydrogen peroxide and 4kg of ethanol as catalysts, add 3kg of hydrogen peroxide after 20 minutes, add 2kg of modification additives after 30 minutes and stir for 10 minutes before discharging. The temperature is maintained at 125°C to 175°C throughout the process.

Embodiment 3

[0025] Put 1400kg of stearic acid into the normal-pressure reactor and heat up to dissolve it. After the stearic acid is dissolved, start stirring. When the temperature rises to 135°C, put 125kg of zinc oxide into the reactor, and add 40kg of water and 5kg of ethanol as catalysts; After reacting for 25 minutes, put 87.5kg of zinc oxide into the reactor, add 20kg of water and 2kg of sodium dihydrogen phosphate as a catalyst, add 6kg of hydrogen peroxide after 35 minutes, add 2kg of modification additive after 40 minutes, and then discharge the material after stirring for 10 minutes . The temperature is maintained at 125°C to 175°C throughout the process.

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Abstract

The invention relates to the technical field of plastic processing auxiliary agents, in particular to a method for preparing zinc stearate. The obtained product is mainly used as isolating agents in a rubber industry and lubricating and releasing agents in amino molding materials. The method comprises the following steps of: putting stearic acid into a reaction kettle under normal pressure and heating the stearic acid to 125 to 175 DEG C; adding zinc oxide into the reaction kettle in two steps; reacting the mixture under the action of a catalyst, then adding a modifying auxiliary agent into the obtained product and stirring; then discharging, wherein the temperature in the whole reaction process is kept to be 125 to 175 DEG C; and finally crushing the obtained product to obtain the finished product. The zinc stearate prepared by the method has excellent hydrophilicity which is unreachable to an ordinary direct process; moreover, by the method, the magnitude of the hydrophilicity of the zinc stearate is controllable; and the catalyst and the modifying auxiliary agent have no pollution on the environment so as to meet the environment protection requirements of energy saving and emission reduction. The process is simple and easy to implement and has extremely high economic and social benefits, and the application field of the zinc stearate is expanded by the process.

Description

Technical field: [0001] The invention relates to the technical field of plastic processing aids, in particular to a preparation method of zinc stearate, the obtained product is mainly used as a release agent in the rubber industry and a lubricating release agent in amino molding compounds. Background technique: [0002] Zinc stearate is mainly used as a non-toxic stabilizer for polyvinyl chloride, a lubricating release agent for plastic products, a paint polishing aid, a softener and release agent for rubber in the rubber industry, a halogen absorbent, and a waterproofing agent for textiles. There are extensive markets at home and abroad. With the development of the plastics industry, the demand for zinc stearate will continue to increase. [0003] Zinc stearate in the current market is still a situation where two processes coexist, direct method (dry method) and indirect method (water method). The indirect process has a long history, and its basic process is: first, react...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C53/126C07C51/41
Inventor 荀育军胡丹
Owner DONGGUAN CHNV TECH CO LTD
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