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Paraffin composition and preparation method and application thereof

A technology of composition and paraffin, applied in the field of paraffin wax composition, can solve problems such as the concentration of condensed polymers and low performance, and achieve the effects of good color, reduced surface energy and stable performance

Active Publication Date: 2016-10-19
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The object of the present invention is to overcome the defects of easy occurrence of coagulation phenomenon in the process of dispersion polymerization in the existing fluorine chemical industry, low concentration of polymer in the dispersion liquid and poor performance, and provide a paraffin wax composition and its preparation method and application

Method used

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  • Paraffin composition and preparation method and application thereof
  • Paraffin composition and preparation method and application thereof
  • Paraffin composition and preparation method and application thereof

Examples

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preparation example Construction

[0030] The present invention also provides a preparation method of the above paraffin wax composition, the method comprising: mixing and heating at least two of microcrystalline wax, high melting point paraffin wax and low melting point paraffin wax.

[0031] According to the present invention, the heating conditions are not particularly limited, as long as at least two of microcrystalline wax, high melting point paraffin wax and low melting point paraffin wax can be formed into molten wax, generally, the heating conditions can include The heating temperature is 70-100° C., and the heating time is 30-90 minutes. Preferably, the heating conditions include: the heating temperature is 70-85° C., and the heating time is 30-60 minutes. In order to enhance the mixing effect of the microcrystalline wax, high melting point paraffin and low melting point paraffin, it is preferable to heat under the condition of stirring.

[0032]In consideration of the difference in the melting points ...

Embodiment 1

[0056] This example is used to illustrate the paraffin wax composition and its preparation method provided by the present invention.

[0057] The formula of the paraffin wax composition is as follows: based on the total weight of the paraffin wax composition, the content of microcrystalline wax is 45% by weight, the content of high melting point wax is 45% by weight, and the content of low melting point wax is 10% by weight.

[0058] Add 45% by weight of No. 70 microcrystalline wax (oil content is 0.5% by weight, the same below) into the stainless steel reactor, turn on the electric furnace switch, and slowly heat the reactor to 80 ° C. After the sample is completely melted, start the stirrer After stirring at a low speed for 10 minutes, stop stirring, add 45% by weight of No. 60 fully refined paraffin (oil content is 0.2% by weight), after completely melting, start stirring, stir and mix for 20 minutes, stop stirring, add 10% by weight of No. 58 fully refined paraffin wax (wi...

Embodiment 2

[0060] This example is used to illustrate the paraffin wax composition and its preparation method provided by the present invention.

[0061] The formula of the paraffin wax composition is as follows: based on the total weight of the paraffin wax composition, the content of the high melting point wax is 97% by weight, and the content of the low melting point wax is 3% by weight.

[0062] Add 35% by weight of No. 66 fully refined paraffin wax (oil content is 0.1% by weight, the same below) into the stainless steel reactor, turn on the electric furnace switch, and slowly heat the reactor to 85 ° C. After the sample is completely melted, start the stirrer After stirring at a low speed for 10 minutes, stop stirring, add 45% by weight of No. 64 fully refined paraffin (oil content is 0.5% by weight), after completely melting, start stirring, stir and mix for 20 minutes, stop stirring, add 17% by weight of No. 60 fully refined paraffin (oil content is 0.2% by weight, the same below),...

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Abstract

The invention discloses a paraffin wax composition and a preparation method and application thereof. The paraffin composition contains at least two of low-melting-point paraffin, high-melting-point paraffin and microcrystalline wax. The paraffin contains 60-90 wt.% of n-alkanes by using the total amount of the paraffin as reference; the carbon peak is at C24-C34; and the distribution of carbon number is a normal distribution. The paraffin composition provided by the invention can be used as a stabilizer in dispersion polymerization reaction of fluorine chemical industry, can effectively reduce the cohesion of polymer, improve the concentration of polymer in the dispersion liquid; the obtained polymer has stable performance; and the adhesion between the polymer and the reaction equipment is reduced.

Description

technical field [0001] The invention relates to a paraffin wax composition, a preparation method of the paraffin wax composition, and the application of the paraffin wax composition as a stabilizer for dispersion polymerization in fluorine chemical industry. Background technique [0002] Polytetrafluoroethylene (PTFE) is the main variety of fluororesin. It has excellent properties such as chemical stability, electrical insulation, excellent lubrication performance, and corrosion resistance, and can be used continuously at high temperatures. At present, the PTFE available in the market is mainly divided into three categories: suspension resin, dispersion resin, and concentrate, which are mainly used in sealing rings, chemical pumps, equipment linings, corrosion-resistant or high-voltage resistant devices, packaging anti-stick coatings, impregnated glass cloth, etc. field. [0003] The polymerization process of PTFE mainly includes suspension polymerization method and dispers...

Claims

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Application Information

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IPC IPC(8): C08L91/06C08F114/26C08F2/00
Inventor 李金亮宿仕富胡伟庆刘清华严俊王晨栋黄婉利罗望群高冰梅
Owner CHINA PETROLEUM & CHEM CORP