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Stabilizer of tetrabromoethane

A tetrabromoethane and stabilizer technology, applied in the field of stabilizers for improving the storage stability of tetrabromoethane, can solve problems affecting product quality, turbidity, tetrabromoethane turbidity, etc., to achieve inhibition of autocatalysis, Stabilize acidity and color, avoid oxidation reaction

Inactive Publication Date: 2010-06-09
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 physically mixing a main stabilizer and an auxiliary stabilizer in a mass ratio of 7:3. The main stabilizer is diethylene glycol or triethylene glycol. Alcohol, the co-stabilizer is a mixture obtained by physically mixing phosphorous acid-diisooctyl benzene, 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 oxidative decomposition mechanism of tetrabromoethane, the stabilizer of the present invention, on the one hand, needs to capture the generated free radicals and synthesize inert compounds with them, play the role of terminating the chain reaction process, delaying the oxidation rate, and delaying the autocataly...

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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 strongly refractive liquid with an odor of iodoform. Tetrabromoethane is an important chemical additive, mainly used as a co-catalyst in the oxidation process of terephthalic acid, as a flame retardant for plastic products such as expandable polystyrene foam, and also used for mineral flotation Agent, oil field kill fluid, etc. Tetrabromoethane is obtained by the addition reaction of bromine and acetylene, after neutralization, and purification to obtain pure product. During storage, tetrabromoethane is easily oxidized and decomposed due to the influence of the external environment, such as heating and light, causing the product to darken, become turbid, increase acidity, and decrease content, which seriously affects product quality. [0003] The m...

Claims

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Application Information

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IPC IPC(8): C07C19/075C07C17/42
Inventor 刘磊力
Owner QILU UNIV OF TECH
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