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Zinc soap synthesis method

A synthesis method and zinc soap technology, applied in the field of metal soap, can solve the problems of large waste liquid discharge, difficult operation, long production time, etc., and achieve the effects of fast reaction speed, good product quality and simple reaction process

Inactive Publication Date: 2015-11-25
YULIN NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the method of producing zinc soap almost all adopts metathesis method in our country, although metathesis method has the advantages such as mild reaction conditions, product has good color and luster, yet the shortcoming that metathesis method itself has can not be ignored, as when synthesizing zinc soap, Sodium soap is easier to form than zinc soap, not easily soluble in water, and easy to form acidic soap with stearic acid. In the process, a lot of water is needed to reduce the viscosity of the reaction material, the waste liquid discharge is also large, the production time is longer, and it is not easy to operate, etc. Disadvantages, if the direct method is applied, there will be no defects caused by the application of the double decomposition method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A kind of zinc soap synthesis method provided by the present invention, take by weighing 34g zinc oxide in the dry beaker, add 6mol / L sodium hydroxide solution to dissolve again, after making the solution cool down, pour in the dry round bottom flask, then Then weigh 20g of oil and put it into a flask, then put it into a magnet, install the experimental device, heat it in a water bath, control the temperature at 65°C, and start the magnetic stirrer to stir the solution. When the reaction reaches 2.5 hours, slowly add 3ml of 30% (mass fraction) hydrogen peroxide solution, react for 3.5h, add hydrochloric acid solution to adjust the pH of the reaction solution to 2.8-6.9, after the experiment is over, cool the solution, wash the solution and filter it with suction, and put the product after the suction filter into a constant temperature drying box to dry. The melting range of the obtained zinc soap is 140°C-152.3°C, the product is off-white granular, and the yield is 75%....

Embodiment 2

[0023] A kind of zinc soap synthetic method provided by the present invention, take by weighing 90g zinc oxide in the dry beaker, add 6mol / L sodium hydroxide solution to dissolve again, after making the solution cool down, pour in the dry round bottom flask, then Then weigh 30g of oil and put it into a flask, then put it into a magnet, install the experimental device, heat it in a water bath, control the temperature at 75°C, and start the magnetic stirrer to stir the solution. When the reaction reaches 3.5 hours, slowly add 5ml of 30% Hydrogen peroxide solution, react for 4.0h, add hydrochloric acid solution to adjust the pH of the reaction solution to 2.8-6.9, after the experiment, cool the solution, wash and filter the solution, and put the filtered product into a constant temperature drying oven for drying. The melting range of the obtained zinc soap is 140°C-152.3°C, the product is off-white granular, and the yield is 82%.

Embodiment 3

[0025] A kind of zinc soap synthetic method provided by the present invention, take by weighing 50g zinc oxide in the dry beaker, add 4mol / L sodium hydroxide solution to dissolve again, after making the solution cool down, pour in the dry round bottom flask, then Weigh 25g of grease and put it into a flask, then put it into a magnet, install the experimental device, heat it in a water bath, control the temperature at 85°C, and start the magnetic stirrer to stir the solution. When the reaction reaches 3 hours, slowly add 3ml of 30% over Hydrogen oxide solution, react for 3.5 hours, add hydrochloric acid solution to adjust the pH of the reaction solution to 2.8-6.9, after the experiment, cool the solution, wash and filter the solution, and put the filtered product into a constant temperature drying oven for drying. The melting range of the obtained zinc soap is 140°C-152.3°C, the product is off-white granular, and the yield is 79%.

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PUM

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Abstract

The invention discloses a zinc soap synthesis method which is high in reaction speed and good in obtained product quality, and belongs to the technical field of metallic soaps. According to the technical scheme, the zinc soap synthesis method comprises the steps that 1, zinc oxide is weighed and placed in a container, and a saturate alkali solution is added in the container to dissolve the zinc oxide, and a clear solution is obtained; 2, after being cooled, the clear solution obtained in the step 1 is poured into a reactor, grease of which the mass number is 0.3-0.6 time of that of the zinc oxide is put into the reactor, the mixed solution is heated, the temperature is controlled at 65-85 DEG C, and the solution is stirred by starting a magnetic stirrer and reacts for 1.5-2.5 h; 3, a catalyst is slowly added into the solution in the step 2, the mixed solution continuously reacts for 2-2.5 h, and then an acid solution is added to regulate the pH value of the reaction solution to 2.8-6.9; 4, the experiment is finished, the solution is cooled, cleansed and filtered, and the filtered solution is placed in a constant-temperature drying oven to be dried.

Description

technical field [0001] The invention relates to a metal soap, in particular to a method for synthesizing a zinc soap, and belongs to the technical field of metal soaps. Background technique [0002] Triglycerides can produce glycerin and metal soaps (such as calcium soap, magnesium soap, zinc soap, etc.) through saponification reaction, which have important uses in daily chemical, plastics, coatings, lubricants and other industrial fields. For example, the key properties of zinc soap in coating applications are: dispersibility, transparency, sanding, foam stabilization, thixotropy, and anti-settling properties. It can be applied to wood paint, it can be applied to nitro paint (NC paint), polyurethane or polyester paint (PU paint), unsaturated polyester paint (PE paint), ultraviolet light curing paint (UV paint), but Not for use in acid-curing coatings (AC varnishes). [0003] Properties of zinc soap: white or yellowish light powder, specific gravity 1.095, greasy feeling, ...

Claims

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Application Information

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IPC IPC(8): C11C3/00C07C27/02
Inventor 周能马金美
Owner YULIN NORMAL UNIVERSITY