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Preparation method for nonionic oxidized polyethylene wax emulsion using single emulsifier

An oxidized polyethylene wax, non-ionic technology, applied in the chemical industry, can solve problems such as complex process, low solid content, complex production process, etc.

Inactive Publication Date: 2012-11-21
SHAOGUAN LIANBANG ENVIRONMENTALLY FRIENDLY NEW MATERIALS CO LTD
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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 cationic-nonionic modified OPE wax emulsion. This patented technology first modifies OPE wax, and then emulsifies it with cationic-nonionic composite emulsifier. The solid content of the product is low less than 30%, and the production process is more complicated
[0007] Chinese patent CN200910021455.0 discloses a method for preparing an anion-nonionic emulsion by modifying OPE wax. This patented technology first modifies OPE wax, and then emulsifies it with an anion-nonionic composite emulsifier. The content is less than 30%, and the production process is more complicated
[0008] It can be seen that in the preparation method of OPE wax emulsion disclosed in domestic patents at present, two or more emulsifiers are used, and the process is more complicated, which is not conducive to large-scale production

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0021] In this example, the mass percentage of each component that is specifically adopted is as follows:

[0022] Deionized water 69% AC-629 25% Brij-721 4.5% Ethylene glycol 1.2% KOH 0.25% Na 2 S 2 o 5 0.05%

[0023] The specific operation steps are as follows:

[0024] 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;

[0025] 2) Introduce high-pressure nitrogen into the kettle body to raise the pressure to 6.0MPa; slowly raise the temperature to 150°C while stirring at a low speed; at this time the pressure is 10.5MPa;

[0026] 3) Keep the temperature at 150±5°C, the corresponding pressure is 10.5±0.5MPa, and stir at 500 rpm for 1.0h;

[0027] 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

[0030] In this example, the mass percentage of each component that is specifically adopted is as follows:

[0031] Deionized water 61.4% AC-629 31.0% AEO-9 6.0% Glycerol 1.0% KOH 0.5% Na 2 S 2 o 5 0.1%

[0032] The specific operation steps are as follows:

[0033] 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;

[0034] 2) Introduce high-pressure nitrogen into the kettle body to raise the pressure to 2.0MPa; slowly raise the temperature to 140°C while stirring at a low speed; at this time the pressure is 4.5MPa;

[0035] 3) Keep the temperature at 140±5°C, the corresponding pressure is 4.5±0.5MPa, and stir at 800 rpm for 1.0h;

[0036] 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 v...

example 3

[0039] In this example, the mass percentage of each component that is specifically adopted is as follows:

[0040] Deionized water 55% AC-629 37% Tween-60 5.5% Diethylene glycol 1.5% KOH 0.8% Na 2 S 2 o 5 0.2%

[0041] The specific operation steps are as follows:

[0042] 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;

[0043] 2) Introduce high-pressure nitrogen into the kettle to raise the pressure to 8.0MPa; slowly raise the temperature to 135°C while stirring at a low speed; at this time the pressure is 12.5MPa;

[0044] 3) Keep the temperature at 135±5°C, the corresponding pressure is 12.5±0.5MPa, and stir at 400 rpm for 0.5h;

[0045] 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 v...

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Abstract

The invention belongs to the field of chemical industry, and specifically relates to a preparation method for a nonionic oxidized polyethylene wax emulsion using a single emulsifier. The preparation method provided by the invention comprises the following steps of: adding oxidized polyethylene wax (AC-629), a nonionic emulsifier, an emulsification aid, KOH, sodium metabisulfite and deionized water according to a certain weight ratio to a high-pressure reaction kettle, followed by covering and sealing; and emulsifying high-melting-point AC-629 wax at high temperature and high pressure through a one-step method to obtain a microemulsion, wherein the emulsifying temperature is 130-150 DEG C, the emulsifying pressure is 1.5-17.0 MPa, and the amount of the nonionic emulsifier is 18-26% of thatof the AC-629 wax; the average particle size of a product is controlled at 35-200 nm through changing emulsifying conditions; and the solid content in the product is controlled at 30-45% through changing the use level of the AC-629 wax. The preparation method provided by the invention is simple in process, only uses one nonionic emulsifier, and lowers the production cost of OPE (oxidized polyethylene) emulsion; and the obtained OPE emulsion is pollution-free and environmentally-friendly.

Description

technical field [0001] The invention belongs to the field of chemical industry, and in particular relates to a method for preparing nonionic 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-so...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J3/03C08L23/30C08K3/22C08K3/30
Inventor 刘清泉周仕祥瞿作明杨萍
Owner SHAOGUAN LIANBANG ENVIRONMENTALLY FRIENDLY NEW MATERIALS CO LTD
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