Method for preparing ionic oxidized polyethylene wax emulsion by using single emulsifier

A technology for oxidizing polyethylene wax and emulsifier, applied in the chemical industry, can solve the problems of low solid content, complicated process, unfavorable large-scale production, etc., and achieve the effect of reducing production cost and simple process

Inactive Publication Date: 2012-11-21
HUNAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Chinese patent CN200410013234.6 discloses the production process of using OPE wax as the main raw material to prepare special lubricants for papermaking and coating. Homogeneous emulsification can obtain OPE wax emulsion with viscosity ≤30mpa.s, solid content of 25%, and good emulsion stability, but this technology needs to use a variety of chemical raw materials, such as alkylphenol polyoxyethylene ether-10 , sorbitan monooleate, silicone, morpholine, sodium trimetaphosphate, etc., and the process is more complicated
[0006] Chinese patent CN200910021452.7 discloses the preparation method of cation-cation modified OPE wax emulsion. This patent technology first modifies OPE wax, and then emulsifies it with cation-cation composite emulsifier. The solid content of the product is lower than 30 %, and the production process is more complicated
[0007] Chinese patent CN200910021455.0 discloses a method for preparing anion-cation emulsion by modifying OPE wax. This patented technology first modifies OPE wax, and then emulsifies it with anion-cation composite emulsifier. The solid content of the product is low less than 30%, and the production process is more complicated
[0008] It can be seen that, in the preparation method of the OPE wax emulsion disclosed in domestic patents at present, two or more emulsifiers are used, and the process is relatively complicated, which is not conducive to large-scale production

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0022] In this example, the mass percentage of each component that is specifically adopted is as follows:

[0023] Deionized water 69% AC-629 25% Sapamine CH 5.4% Diethanolamine 0.5% Na 2 S 2 o 5 0.1%

[0024] The specific operation steps are as follows:

[0025] 1) Add various reaction raw materials into a 500mL autoclave according to the above proportions, the total mass of all reaction raw materials is 350g, and tighten the lid of the kettle to seal;

[0026] 2) Introduce high-pressure nitrogen into the kettle body to raise the pressure to 8.5Mpa, and slowly raise the temperature to 150°C while stirring at a low level. At this time, the pressure is 13.5MPa;

[0027] 3) Keep the temperature at 150±5°C, the corresponding pressure is 13.5±0.5MPa, and stir at a speed of 500 rpm for 0.5h;

[0028] 4) After the emulsification is completed, turn on the cooling water to quickly drop the temperature of the system to 50°C (≥10°C / min), open...

example 2

[0031] In this example, the mass percentage of each component that is specifically adopted is as follows:

[0032] Deionized water 64.9% AC-629 28.0% AES 6.0% Diglycerin 1.0% Na 2 S 2 o 5 0.1%

[0033] The specific operation steps are as follows:

[0034] 1) Add various reaction raw materials into a 500mL autoclave according to the above proportions, the total mass of all reaction raw materials is 350g, and tighten the lid of the kettle to seal;

[0035] 2) Introduce high-pressure nitrogen into the kettle body to raise the pressure to 5.0Mpa, and slowly raise the temperature to 145°C while stirring at a low level. At this time, the pressure is 8.5MPa;

[0036] 3) Keep the temperature at 145±5°C, the corresponding pressure is 8.5±0.5MPa, and stir at 300 rpm for 0.5h;

[0037] 4) After the emulsification is completed, turn on the cooling water to quickly drop the temperature of the system to 50°C (≥10°C / min), open the vent valve of th...

example 3

[0040] In this example, the mass percentage of each component that is specifically adopted is as follows:

[0041] Deionized water 60% AC-629 34% MOA-3PK 5.0% polyethylene glycol 400 0.9% Na 2 S 2 o 5 0.1%

[0042] The specific operation steps are as follows:

[0043] 1) Add various reaction raw materials into a 500mL autoclave according to the above proportions, the total mass of all reaction raw materials is 350g, and tighten the lid of the kettle to seal;

[0044] 2) Introduce high-pressure nitrogen into the kettle body to raise the pressure to 2.5Mpa, and slowly raise the temperature to 135°C while stirring at a low level. At this time, the pressure is 5.0MPa;

[0045] 3) Keep the temperature at 135±5°C, the corresponding pressure is 5.0±0.5MPa, and stir at 800 rpm for 1h;

[0046] 4) After the emulsification is completed, turn on the cooling water to quickly drop the temperature of the system to 50°C (≥10°C / min), open the vent ...

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Abstract

The invention, belonging to the field of chemical industry, relates to a method for preparing an ionic oxidized polyethylene wax emulsion by a single emulsifier. The method comprises the following steps: adding oxidized polyethylene wax AC-629, ionic emulsion, auxiliary agent, sodium metabisulfite and deionized water according to certain weight portions in a high pressure reactor, adding a cover for sealing; emulsifying the melting-point AC-629 wax into ionic emulsion by one-step process under the conditions of high temperature and high pressure. The emulsification temperature is 130-150 DEG C, the emulsification pressure is 1.5-17.0MPa, and the amount of the ionic emulsion accounts for 18-26% of the amount of the AC-629. By changing the emulsification conditions, the average particle size of the products can be controlled in the range of 65-200nm, and by changing the amount of AC-629, the solid content of the products can be controlled in the range of 30-40%. The invention has the advantage of simple technology, and by only using an ionic emulsifier, the production cost of the OPE emulsion is reduced.

Description

technical field [0001] The invention belongs to the field of chemical industry, and in particular relates to a method for preparing ionic oxidized polyethylene (OPE) wax emulsion with a single emulsifier. The OPE wax emulsion can be applied to leather, floor, automobile, furniture, papermaking, textile and other fields. Background technique [0002] Wax is an oily organic substance with strong cohesive force, which is insoluble in water. The wax emulsion is to reduce the surface tension of the oil-water two phases by adding an emulsifier, so that the wax is evenly dispersed in the water, and with the help of the directional adsorption of the emulsifier, an emulsion is formed under the action of an external force. Wax emulsion is one of the main forms of wax product application. It has the characteristics of stable performance, delicate, uniform film formation, strong hydrophobicity, non-toxic, non-corrosive, easy to store, easy to use, and easy to mix with other water-solub...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J3/05C08L23/30
Inventor 刘清泉周仕祥瞿作明杨萍
Owner HUNAN UNIV OF SCI & TECH
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