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A kind of preparation method of oxidation stabilized paraffin

An oxidation stability and paraffin wax technology, which is applied in petroleum wax refining, petroleum wax recovery, fermentation, etc., can solve the problems of easy oxidation and deterioration, darkening of color, poor oxidation stability of paraffin wax, etc., and achieve good thermal stability and oxidation stability. Excellent thermal stability and light stability, good synergistic anti-oxidation effect

Active Publication Date: 2020-09-15
NANCHANG BAIYUN PHARMA
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The main technical problem to be solved by the present invention is that the current paraffin wax is poor in oxidation stability, easy to oxidize and deteriorate, the color becomes darker, and even emits a bad smell. When in use, the paraffin wax will turn yellow under light conditions, and the paraffin wax itself is brittle. The defect of friction, easy wear and fragmentation provides a preparation method of oxidation stable paraffin wax

Method used

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  • A kind of preparation method of oxidation stabilized paraffin

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Embodiment Construction

[0025]Add 3.4~3.8g of 2,6-di-tert-butylphenol and 3.6~4.0g of diphenylamine into the single-necked flask, continue to add 40~50ml of n-decane, and use a magnetic stirrer at 300~350r / min under the protection of nitrogen. Stir for 3 to 4 hours at a constant speed, heat up to 140 to 160 °C, then add 8.5 to 10.0 mL of di-tert-butyl peroxide into the single-necked flask, stir and react for 3 to 4 hours to obtain the reaction product; put the above-mentioned single-necked flask on Condensation and reflux device, heat up to 140-150°C, distill for 1-2 hours, then cool to room temperature naturally, place the distillation flask in absolute ethanol at -20-15°C and freeze for 2-3 hours to obtain a crystal-containing reaction product , filter the reaction product with suction, remove the filtrate to obtain a filter cake, wash the filter cake with n-decane for 3 to 5 times, heat it in an oven to 90 to 100°C, and dry it for 4 to 5 hours to obtain 2,6 di tert-butyl-4-(diphenylamino)phenol; m...

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Abstract

The invention discloses a preparation method for oxidation-stability-type paraffin, and belongs to the technical field of the paraffin preparation. A little of microcrystalline wax is used for increasing the hardness and wear-resisting property of the soft paraffin, and soybean oil is used to be easily oxidized to form epoxidized soybean oil, the epoxidized soybean oil has the good heat stabilityand the light stability. A nitrogen free radical becomes very stable under the influence of a benzene ring conjugate effect, does not react with an ester oil molecule with the enough activity, and only reacts with other free radicals. The nitrogen free radicals continuously react with a peroxy radical to generate a nitroxide free radical. A generated antioxidant intermediate has the high stabilitybecause of the conjugation action of a benzene ring, only performs a cessation reaction of the free radical with the other activity free radicals and peroxy radicals, and has the high heat stability,and the good synergistic antioxidant effect with diphenylamine, so the prepared activated paraffin has the good heat stability and oxidation stability properties, and the extensive application prospect.

Description

technical field [0001] The invention discloses a preparation method of oxidation-stable paraffin, which belongs to the technical field of paraffin preparation. Background technique [0002] Paraffin wax is a common name for a mixture of solid higher alkanes. It can be obtained by cold pressing or solvent dewaxing, sweating, etc. from waxy fractions of natural or artificial petroleum. It is a white, odorless waxy solid with about 18 to 30 carbon atoms. Generally divided into fully refined paraffin, semi-refined paraffin and crude paraffin three. Paraffin wax has a wide range of uses. After soaking paper in paraffin wax, wax paper with good waterproof performance can be produced; adding paraffin wax to cotton yarn can make textiles soft, smooth and elastic. [0003] Paraffin is a kind of petroleum processing product. A mixture of solid alkanes. Odorless, tasteless, white or light yellow solid. It is prepared by cold pressing or solvent dewaxing, sweating and other methods ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G73/36C10G73/42C12P5/00
CPCC10G73/36C10G73/42C12P5/00
Inventor 胡果青何伟仁陈可
Owner NANCHANG BAIYUN PHARMA
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