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Stabilizer of tetrabromoethane

A technology of tetrabromoethane and stabilizer, which is applied in the field of stabilizers for improving the storage stability of tetrabromoethane, can solve problems such as affecting product quality, becoming turbid, turbid tetrabromoethane, etc., and achieves inhibition of autocatalysis, The effect of stabilizing acidity and color and avoiding oxidation reaction

Inactive Publication Date: 2013-05-15
QILU UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

During the storage process, tetrabromoethane is easily oxidized and decomposed due to the influence of the external environment, such as under the condition of heating and light, causing the product to become darker and turbid, with an increase in acidity and a decrease in content, which seriously affects product quality.
[0015] The unsaturated brominated hydrocarbons produced by this reaction will polymerize to form polymers, which will cause tetrabromoethane to become cloudy

Method used

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  • Stabilizer of tetrabromoethane
  • Stabilizer of tetrabromoethane
  • Stabilizer of tetrabromoethane

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Embodiment Construction

[0030] The stabilizer for improving the storage stability of tetrabromoethane of the present invention is formed by physical mixing of a main stabilizer and an auxiliary stabilizer in a mass ratio of 7:3, and the main stabilizer is diethylene glycol or triethylene glycol Alcohol, co-stabilizer is a mixture obtained by physical mixing of phosphorous acid-benzenediisooctyl, zinc stearate or barium stearate and dehydroacetic acid in a mass ratio of 7:3:1. During use, the amount of stabilizer added to tetrabromoethane is 2% by mass. Experimental results and actual use results show that the stabilizer can keep tetrabromoethane stable for a long time.

[0031] According to the mechanism of oxidative decomposition of tetrabromoethane, the stabilizing agent of the present invention will capture the free radical that generates on the one hand and compound inert compound with it, play the effect of terminating the chain reaction process, delaying the oxidation rate, delaying the autocat...

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Abstract

The invention provides a stabilizer of tetrabromoethane, which is used for improving the storing stability of tetrabromoethane. The stabilizer is prepared by physically mixing a main stabilizer and an auxiliary stabilizer in a mass ratio of 7:3, wherein the main stabilizer is diethylene glycol or triethylene glycol, the auxiliary stabilizer is a mixture prepared by physically mixing diphenyl isooctyl phosphate, zinc stearate or barium stearate and dehydroacetic acid in a mass ratio of 7 to 3 to 1. The stabilizer of tetrabromoethane has the advantages of stabilizing tetrabromoethane for a longtime, prolonging storage time, making free radicals generated in products of tetrabromoethane captured at any time, avoiding oxidizing reaction, neutralizing hydrogen bromide at any time, inhibiting dehydrobromination, inhibiting automatic catalytic action, stabilizing the acidity and color of tetrabromoethane, and preventing the influence of color change and alkalinity acidity change of productson product quality.

Description

technical field [0001] The invention relates to tetrabromoethane, in particular to a stabilizer for improving the storage stability of tetrabromoethane. Background technique [0002] 1,1,2,2-Tetrabromoethane is a white or light yellow strong refractive liquid with iodoform odor. Tetrabromoethane is an important chemical auxiliary agent, mainly used as a cocatalyst in the oxidation process of terephthalic acid, a flame retardant for plastic products such as expandable polystyrene foam, and can also be used for mineral flotation agent, oil field kill fluid, etc. Tetrabromoethane is obtained by addition reaction of bromine and acetylene, neutralized and purified to obtain pure product. During the storage process, tetrabromoethane is easily oxidized and decomposed due to the influence of the external environment, such as heating and light, causing the product to become darker, turbid, acidity increased, and content decreased, seriously affecting product quality. [0003] The ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C19/075C07C17/42
Inventor 刘磊力
Owner QILU UNIV OF TECH
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