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Method for producing highly-chlorinated polyethylene

A technology of high-chlorinated polyethylene and polyethylene, which is applied in the field of manufacturing high-chlorinated polyethylene, can solve the problems of ozone layer destruction and carbon tetrachloride residue, and achieve the effect of stable weight and easy control

Active Publication Date: 2010-05-12
山东高信化学股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, carbon tetrachloride enters the atmosphere during the production process, which greatly damages the ozone layer, and the finished product has carbon tetrachloride residues

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Add deionized water with a total weight of 318kg, dispersant polyvinyl alcohol, emulsifier octylphenol polyoxyethylene ether and polyethylene with a molecular weight of 30,000 and a particle size of 60 mesh in a weight ratio of 1:0.0018:0.0002:0.05 into the reactor , mixed to prepare a suspension system, and then the temperature of the suspension system was raised to 70° C., and then chlorine gas was introduced at a constant rate of 3 kg / min to perform a three-stage reaction.

[0023] The reaction temperature of the first stage is 70°C, and the reaction time is 70min;

[0024] The reaction temperature of the second stage is 100°C, and the reaction time is 95 minutes;

[0025] The third stage reaction temperature is 135°C, and the reaction time is 50min;

[0026] Stop passing chlorine when the chlorine weight content in the reaction system reaches 67%, and keep the temperature at 135° C. for 30 minutes.

[0027] 0.2MPa compressed air is passed into the reactor to repla...

Embodiment 2

[0031] Deionized water with a total weight of 384kg, dispersant polyvinyl alcohol, emulsifier octylphenol polyoxyethylene ether and polyethylene with a molecular weight of 40,000 and a particle diameter of 70 were added to the reactor in a weight ratio of 1:0.0018:0.0002:0.05, Mix to prepare a suspension system, then raise the temperature of the suspension system to 70° C., and then feed chlorine gas at a constant rate of 4 kg / min to perform a three-stage reaction.

[0032] The reaction temperature of the first stage is 80°C, and the reaction time is 60 minutes;

[0033] The reaction temperature of the second stage is 120°C, and the reaction time is 90 minutes;

[0034] The third stage reaction temperature is 137°C, and the reaction time is 45min;

[0035] Stop passing chlorine when the chlorine weight content in the reaction system reaches 67%, and keep the temperature at 137° C. for 30 minutes.

[0036] 0.2MPa compressed air is passed into the reactor to replace the chlori...

Embodiment 3

[0040] Add deionized water with a total weight of 431kg, dispersant methacrylic acid, emulsifier octylphenyl polyoxyethylene ether, and polyethylene with a molecular weight of 50,000 and a particle size of 80 meshes in a weight ratio of 1:0.0018:0.0002:0.05 into the reactor , mixed to prepare a suspension system, and then the temperature of the suspension system was raised to 70° C., and then chlorine gas was introduced at a constant rate of 5 kg / min to perform a three-stage reaction.

[0041] The reaction temperature of the first stage is 100°C, and the reaction time is 50 minutes;

[0042] The reaction temperature of the second stage is 135°C, and the reaction time is 85min;

[0043] The reaction temperature of the third stage is 139° C., and the reaction time is 40 minutes;

[0044] Stop passing chlorine when the chlorine weight content in the reaction system reaches 67%, and keep the temperature at 139° C. for 30 minutes.

[0045] 0.2MPa compressed air is passed into the...

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Abstract

The invention discloses a method for producing highly-chlorinated polyethylene, which manufactures the highly-chlorinated polyethylene by chlorination in a suspension method. The method manufactures the highly-chlorinated polyethylene by chlorination in a water phase suspension method. The method comprises the following steps: adding water, polyethylene and an auxiliary agent into a reaction kettle, mixing to prepare a suspension system, afterwards heating the suspension system, then introducing chlorine gas and producing the highly-chlorinated polyethylene by a three-section reaction; because the technical scheme of the invention is adopted, the produced highly-chlorinated polyethylene has stable product weight, and the production process is green and environment-friendly and is easy to control.

Description

technical field [0001] The invention relates to a method for producing high-chlorinated polyethylene, in particular to an industrial production method for suspending chlorination reaction in aqueous solution to produce high-chlorinated polyethylene. Background technique [0002] Highly chlorinated polyethylene (HCPE) is a chlorine-containing polymer produced by chlorination of polyethylene, with saturated molecular chains, stable chemical properties, non-toxic, tasteless, and harmless to the environment. Mainly used as coatings, inks, adhesives, etc. Highly chlorinated polyethylene is dissolved in toluene, xylene and higher alcohols, and the coating prepared by its solution has excellent chemical resistance, salt spray resistance, high adhesion to steel, cement and other substrates, and is an ideal anti-corrosion material. Membrane substances are now widely used in heavy-duty anti-corrosion coatings, containers and architectural anti-corrosion coatings. [0003] There are ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F10/02C08F8/22
Inventor 刘春山
Owner 山东高信化学股份有限公司
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