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Safety production process of diethylhexyl peroxydicarbonate initiator

A technology of diethylhexyl peroxydicarbonate and initiators, which is applied in the safe production process field of diethylhexyl peroxydicarbonate initiators, can solve the unreasonable construction of cold storage for peroxide initiators and cause Avoid problems such as unstable agent emulsion and poor ventilation of material barrels, so as to avoid personal accidental injury and property loss, improve air cooling effect, and facilitate procurement

Inactive Publication Date: 2019-01-11
蓝凤祥 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are many reasons for this, one is the unreasonable construction of the cold storage for the peroxide initiator, and the poor ventilation of the material barrel
In order to save money, many cold stores in many enterprises do not have shelves for plastic barrels. The barrels are stacked on the spot, and the barrels are stacked in rows for ventilation. It will cause the freezing effect to deteriorate, produce dead angles, and increase the local temperature
EHP initiator is a very active chemical, it will start to vaporize and volatilize when it is higher than -5°C, and once it reaches a certain pressure, it will cause a flash explosion, which is very dangerous
[0005] 3. Due to the limitation of production technology, the initiator emulsion produced by some auxiliary factories is unstable and even delaminated, which is very dangerous
The purpose of the emulsification of the peroxide initiator is for safety. After the initiator emulsion is stratified, the protective layer is gone. Even if it is placed in the cold storage for a long time, it is very dangerous, and it is even more dangerous in the transportation of materials. This is also the initiator emulsion. Another Cause of Flash Explosions and Fires

Method used

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  • Safety production process of diethylhexyl peroxydicarbonate initiator
  • Safety production process of diethylhexyl peroxydicarbonate initiator
  • Safety production process of diethylhexyl peroxydicarbonate initiator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A diethylhexyl peroxydicarbonate initiator is prepared from the following raw materials in parts by weight: 35 parts of chlorinated esters, 15 parts of hydrogen peroxide, and 5 parts of sodium hydroxide.

[0030] After checking that the equipment is in good condition, check that the initiator stabilizer has been put into the safety tank for standby.

[0031] First, put deionized water into the reaction kettle according to the process formula, and start the agitator. Add 5 parts of caustic soda weighed into the reaction kettle from the feeding port, open the refrigerant valve, start stirring, and start to add 15 parts of hydrogen peroxide into the reaction kettle to produce sodium peroxide.

[0032] Then, the flow meter was opened again, and 35 parts of chlorinated esters were slowly added to the reactor. In this step, the reaction is exothermic very quickly. Once the temperature rises rapidly, it is difficult to control, indicating that the feeding speed is too fast, a...

Embodiment 2

[0035] A diethylhexyl peroxydicarbonate initiator is prepared from the following raw materials in parts by weight: 45 parts of chlorinated esters, 17.5 parts of hydrogen peroxide, and 7.5 parts of sodium hydroxide.

[0036] After checking that the equipment is in good condition, check that the initiator stabilizer has been put into the safety tank for standby.

[0037] First, put deionized water into the polymerization kettle according to the process formula, and start the agitator. Add 7.5 parts of caustic soda weighed into the reaction kettle from the feeding port, and open the refrigerant valve. The flow meter was turned on and 17.5 parts of hydrogen peroxide was started to be added to the kettle to produce sodium peroxide.

[0038]Then, the flowmeter was opened again, and 45 parts of chlorinated esters were slowly added to the reactor. In this step, the reaction is exothermic very quickly. Once the temperature rises rapidly, it is difficult to control, indicating that th...

Embodiment 3

[0040] A diethylhexyl peroxydicarbonate initiator is prepared from the following raw materials in parts by weight: 55 parts of chlorinated esters, 20 parts of hydrogen peroxide, and 8 parts of sodium hydroxide.

[0041] After checking that the equipment is in good condition, check that the initiator stabilizer has been put into the safety tank for standby.

[0042] First, put deionized water into the reaction kettle according to the process formula, and start the agitator. Add 8 parts of caustic soda weighed into the reaction kettle from the feeding port, open the refrigerant valve, and start stirring. Turn on the flow meter and start adding 20 parts of hydrogen peroxide to the reactor to produce sodium peroxide.

[0043] Then, the flow meter was opened again, and 55 parts of chlorinated esters were slowly added to the reactor. In this step, the reaction is exothermic very quickly. Once the temperature rises rapidly, it is difficult to control, indicating that the feeding sp...

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Abstract

The invention provides a safety production process of a diethylhexyl peroxydicarbonate initiator, relates to the technical field of fine chemical industry, and is applied to the industry of polymer synthetic auxiliary agents and the industry of polyvinyl chloride resin synthesis. The diethylhexyl peroxydicarbonate initiator is prepared from the following raw materials in parts by weight: 35-55 parts of chlorinated ester, 15-20 parts of hydrogen peroxide and 5-8 parts of sodium hydroxide. The safety production process has the characteristics of low equipment transformation cost, low toxicity ofraw materials, easy procurement and low price.

Description

technical field [0001] The invention relates to a technical field of fine chemicals, in particular to a safe production process of a diethylhexyl peroxydicarbonate initiator. Background technique [0002] Diethylhexyl peroxydicarbonate (EHP) initiator, molecular formula C10H18O8, is an important auxiliary agent used in the production of polyvinyl chloride resin. This product is not only used in the production of polyvinyl chloride, but also widely used in the production of other synthetic resins. Since the product is a peroxide, which is a hazardous chemical, the manufacturer has been under the supervision of relevant state departments. The production process of this product is relatively mature, but there are still potential safety hazards in the production, storage and transportation process. Domestic and foreign manufacturers of this product do not have a set of practical safety technical measures that can completely prevent production accidents. In the past ten years, w...

Claims

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Application Information

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IPC IPC(8): C07C407/00C07C409/32C08F4/34
CPCC07C407/00C08F4/34C07C409/32
Inventor 蓝凤祥
Owner 蓝凤祥
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