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A kind of modification method of oxidized polyethylene wax and obtained product and application

A technology for modifying oxidized polyethylene wax, which is applied in the field of modification of oxidized polyethylene wax, can solve the problems of aggravated pressure analysis and limit the use of oxidized polyethylene wax, so as to reduce the defective rate and prolong the continuous production time of the machine , The effect of low precipitation

Active Publication Date: 2022-05-27
济南金昌树新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is found in actual processing that the addition of oxidized polyethylene wax will aggravate the pressure-settling phenomenon during PVC extrusion, which limits the use of oxidized polyethylene wax in PVC.

Method used

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  • A kind of modification method of oxidized polyethylene wax and obtained product and application
  • A kind of modification method of oxidized polyethylene wax and obtained product and application
  • A kind of modification method of oxidized polyethylene wax and obtained product and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] 1. Weigh the raw materials: 150 g of oxidized polyethylene wax, 4.01 g of calcium hydroxide, and 3.68 g of ammonia water.

[0037] 2. Add 600g of water to the autoclave, continue to add 150g of oxidized polyethylene wax and 4.01g of calcium hydroxide, add 3.68g of ammonia water as an initiator, seal the autoclave, and introduce nitrogen from the nitrogen port to discharge the air in the autoclave. After the air was fully exhausted, 1.0 MPa nitrogen was introduced into the kettle, and the temperature was raised to 100 °C to carry out a closed reaction. The reaction time was 6 h. After the reaction, suction filtration, drying and pulverization were carried out to obtain 150 g of modified oxidized polyethylene wax with a yield of 97.4%.

Embodiment 2

[0039] 1. Weigh the raw materials: 100 g of oxidized polyethylene wax, 3.21 g of calcium hydroxide, and 2.95 g of ammonia water.

[0040] 2. Add 600g of water to the autoclave, continue to add 100g of oxidized polyethylene wax and 3.21g of calcium hydroxide, add 2.95g of ammonia water as an initiator, seal the autoclave, and introduce nitrogen from the nitrogen port to discharge the air in the autoclave. After the air was fully exhausted, 1.5MPa nitrogen was introduced into the kettle, and the temperature was raised to 140°C to carry out a closed reaction, and the reaction time was 4h. After the reaction, suction filtration, drying and pulverization were carried out to obtain 94 g of modified oxidized polyethylene wax with a yield of 91.1%.

Embodiment 3

[0042] 1. Weigh the raw materials: 150 g of oxidized polyethylene wax, 6.68 g of calcium hydroxide, and 6.13 g of ammonia water.

[0043] 2. Add 600g of water to the autoclave, continue to add 150g of oxidized polyethylene wax and 6.68g of calcium hydroxide, add 6.13g of ammonia water as an initiator, seal the autoclave, and introduce nitrogen from the nitrogen port to discharge the air in the autoclave. After the air was fully exhausted, 2.0 MPa nitrogen was introduced into the kettle, and the temperature was raised to 140 °C to carry out a closed reaction, and the reaction time was 3 h. After the reaction, suction filtration, drying and pulverization were carried out to obtain 149 g of modified oxidized polyethylene wax with a yield of 95.1%.

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PUM

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Abstract

The invention discloses a method for modifying oxidized polyethylene wax, the obtained product and its application. The oxidized polyethylene wax and a modifying agent are polymerized under the action of an initiator to obtain modified oxidized polyethylene wax; the modification The neutralizer is a metal oxide or metal hydroxide. The invention adopts a solution polymerization method or a melt polymerization method to modify the oxidized polyethylene wax, and the required equipment is simple, the polymerization process is simple, the operation is simple and the cost is low. The modified oxidized polyethylene wax of the invention not only has good thermal stability and lubricity, but also has low precipitation, and improves or inhibits the pressure-settling phenomenon of the oxidized polyethylene wax in PVC processing.

Description

technical field [0001] The invention relates to a method for modifying oxidized polyethylene wax, in particular to a method for modifying high-density oxidized polyethylene wax and the obtained modified oxidized polyethylene wax, and the modified oxidized polyethylene wax for improving PVC processing. Application of the piezo-precipitation phenomenon in the process. Background technique [0002] Polyvinyl chloride (PVC) has been widely used in the field of life due to its excellent performance, low price, high strength and strong corrosion resistance. Its consumption is second only to polyethylene and belongs to the second largest type of plastic products. Due to the inherent structural characteristics of PVC resin, during PVC processing, various processing aids such as stabilizers, mold release agents, lubricants and other processing aids need to be added to synergistically cooperate to prepare products with excellent performance. However, these additives are not stable in...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F8/42C08F8/06C08F110/06C08L27/06C08L23/30
CPCC08F8/42C08L27/06C08F8/06C08F110/06C08L23/30
Inventor 杨丹刘元
Owner 济南金昌树新材料科技有限公司
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