Preparation method and application of high lubricated oxidized polyethylene wax

A technology of oxidized polyethylene wax and lubricity, which is applied in the field of preparation of high lubricity oxidized polyethylene wax, can solve the problems of poor compatibility, low polarity, unsatisfactory lubricating and dispersing effects, etc., and achieve excellent dispersibility, Remarkable effect, the effect of green production function

Inactive Publication Date: 2021-07-30
江西宏远化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The polyethylene wax or oxidized polyethylene wax prepared from the above-mentioned disclosed preparation method still has the disadvantages of low polarity, poor compatibility, and unsatisfactory lubricating and dispersing effects.

Method used

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  • Preparation method and application of high lubricated oxidized polyethylene wax

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preparation example Construction

[0026] A kind of preparation method of high lubricity oxidized polyethylene wax disclosed by the invention comprises the following methods,

[0027] 2) prepare low molecular weight polyethylene wax,

[0028] Waxy low molecular weight polyethylene oligomers are used as raw materials, the waxy low molecular weight polyethylene oligomers are polyethylene waxes with a relative molecular mass of 2000, and liquid carbon dioxide is used as a solvent, and the solvent liquid carbon dioxide is supercritical carbon dioxide and the monohydric short-chain alcohol is a precipitating agent, and the precipitant is a C2-C4 monohydric short-chain alcohol, and the reaction is carried out at a reaction temperature of 100-145° C., and the reaction is controlled by dissolving, concentrating, precipitating, separating, and drying Temperature; the melting temperature is 100-120°C; the drying temperature is controlled to be 60-80°C. That is to produce low molecular weight polyethylene wax products wi...

Embodiment 1

[0058] A kind of preparation method and application thereof of a kind of high lubricity oxidized polyethylene wax disclosed by the present invention, a kind of implementation mode of following example is as follows,

[0059] A kind of preparation method of high lubricity oxidized polyethylene wax disclosed by the invention comprises the following methods,

[0060] 1) prepare low molecular weight polyethylene wax,

[0061] Waxy low-molecular polyethylene oligomers are used as raw materials, and the waxy low-molecular polyethylene oligomers are polyethylene waxes with an average relative molecular weight of 2000, supercritical carbon dioxide is used as a solvent, and monohydric short-chain alcohols of C2 As a precipitating agent, react under reaction temperature conditions, control the ratio of waxy low molecular polyethylene oligomer and solvent to 1:5, after several times of dissolution, concentration, precipitation, separation, and drying, control the dissolution temperature ...

Embodiment 2

[0067] A kind of preparation method and application thereof of a kind of high lubricity oxidized polyethylene wax disclosed by the present invention, a kind of implementation mode of following example is as follows,

[0068] A kind of preparation method of high lubricity oxidized polyethylene wax disclosed by the invention comprises the following methods,

[0069] 1) prepare low molecular weight polyethylene wax,

[0070] Waxy low molecular weight polyethylene oligomers are used as raw materials, supercritical carbon dioxide is used as solvent, and C4 monohydric short chain alcohol is used as precipitant, and the reaction is carried out under the reaction temperature conditions. After several times of dissolution, the dissolution temperature is controlled to be 100 Concentration, precipitation, separation, and drying at -120°C, and the drying temperature is controlled at 60-80°C to produce low molecular weight polyethylene wax products with different average relative molecular...

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Abstract

The invention provides a preparation method and application of high lubricated oxidized polyethylene wax, which comprises the following steps: by taking waxy low molecular weight polyethylene oligomer as a raw material, liquid carbon dioxide as a solvent and monobasic short-chain alcohol as a precipitator, reacting under the condition of reaction temperature, dissolving, concentrating, precipitating, separating and drying, thereby preparing low molecular weight polyethylene wax; the method comprises preparation of low molecular weight polyethylene wax and high lubricated oxidized polyethylene wax; and the high lubricated oxidized polyethylene wax has the advantages of good polarity, good compatibility, ideal lubricating and dispersing effects, small influence on the environment and the like, and has relatively high market economic value.

Description

Technical field: [0001] The invention relates to the field of chemical product production, mainly relates to a polyethylene wax (PEW) product and its application, in particular to a preparation method and application of a high-lubricity oxidized polyethylene wax. Background technique: [0002] Polyethylene wax (PEW) is a by-product produced during the preparation of high-density polyethylene. It has special properties such as low viscosity, high softening point, and good hardness. It is non-toxic, has good thermal stability, and low volatility at high temperature. It has excellent dispersibility, excellent external lubricity and strong internal lubricating effect, and also has coupling effect, which can improve the production efficiency of plastic processing and reduce production cost. It has good compatibility with polyolefin resins, etc. Compatibility, good moisture resistance at room temperature, strong chemical resistance, excellent electrical properties, and can improve...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F8/06C08F110/02C09C1/36C09C1/00C09C3/10C08L27/06C08L23/30
CPCC08F8/06C09C1/3676C09C1/00C09C3/10C08L27/06Y02P20/54
Inventor 洪颖吴蔚胡佩晏敏辉
Owner 江西宏远化工有限公司
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