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1-polyolefin halogenation production method

A production method and polyolefin technology, applied in the field of halogenated polymer preparation

Inactive Publication Date: 2010-03-17
江苏圣杰实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these patented technologies still follow the wet halogenation process

Method used

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  • 1-polyolefin halogenation production method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] 1- The main equipment of the polyolefin halogenation plant is as follows: figure 1 In the shown reactor device of a reverse twin-screw extruder, the diameter of the screw is Ф36mm, and the ratio of length to diameter is L / D=60. Except for the metering and discharging section, which is meshed, the rest of the sections are non-meshed. The cylinder body is divided into 10 sections for temperature control, the internal cooling medium of the cylinder is 0 ℃ white oil, and the outer cylinder is heated by an electric heating copper tile heating jacket. High-density polyethylene pellets (density 0.95g / m 3 ) into the hopper of feeder-screw crushing plasticizer 3, with a weight of 30kg. Into the lower part of the hopper into 0.01MPa pressure nitrogen, the flow rate is about 0.2NM 3 / h, the temperature of the screw crushing plasticizer is controlled at 60-100°C. Through the liquid raw material tank 6, 20 kg of carbon tetrachloride dissolved with 60 g of azobisisobutyronitrile i...

Embodiment 2

[0054] The same reaction device system as in Example 1 was used. Present embodiment adopts low-density polyethylene pellets (density 0.92g / m 3 ) into the hopper of feeder-screw crushing plasticizer 3, with a weight of 30kg. Into the lower part of the hopper into 0.01MPa pressure nitrogen, the flow rate is about 0.2NM 3 / h. The temperature of the screw crushing plasticizer is controlled at 60-80°C. Through the liquid raw material tank 6, 20 kg of carbon tetrachloride dissolved in 60 g of azobisisobutyronitrile is metered into, and the low-density polyethylene is softened, shredded and extruded into a porous soft material, which is sent into a twin-screw extruder reactor plastic After the degassing section, the solvent and a small amount of water are evaporated and recovered to obtain a viscous liquid with a solid content of more than 70%, which is then subjected to ultrasonic viscosity reduction and enters the halogenation reaction system. Twin-screw extruder reactor diamet...

Embodiment 3

[0056]The same reactor setup system as in Example 1 was used. In this embodiment, polypropylene pellets are added to the hopper of the feeder-screw crushing plasticizer 3 with a weight of 30 kg. Into the lower part of the hopper into 0.01MPa pressure nitrogen, the flow rate is about 0.2NM 3 / h. The temperature of the screw crushing plasticizer is controlled at 80-100°C. Through the liquid raw material tank 6, 20 kg of toluene dissolved with 40 g of azobisisobutyronitrile is metered in, and the polypropylene is softened, shredded and extruded into a porous soft material, which is then sent into the plasticizing and degassing section of the twin-screw extruder reactor. , the solvent and a small amount of water are evaporated and recovered to obtain a viscous liquid with a solid content of more than 70%, which is then subjected to ultrasonic viscosity reduction and enters the halogenation reaction system. Twin-screw extruder reactor diameter Ф100mm, L / D=10 asynchronous co-rota...

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Abstract

The invention relates to a 1-polyolefin halogenation production method which is characterized in that continuous plastication (mixing), degasification, ultrasonic wave visbreaking, softening, multistage halogenation, neutralization and stabilization, devolatilization, ultrasonic wave temperature reduction and stripping and slicing measurement are realized in a sealing drying system in a double-screw extruder reactor to produce the halogenated polyolefin. Compared with the traditional process, the process flow is shortened by three fourth, which saves investment and energy power consumption; the halogen content of the halogenated polyolefin can be controlled, and does not contain corrosive acid gas, so that the equipment can not be corroded severely, is the modern green engineering, and canwidely replace the process equipment of the current halogenated polyolefin.

Description

technical field [0001] The invention relates to the field of preparation of halogenated polymers, in particular to a non-environmental pollution, safe and energy-saving 1-polyolefin halogenated production method. Background technique [0002] At present, polyethylene, polypropylene, polyvinyl chloride, and polystyrene are four general-purpose materials, which have been widely used in various fields and are closely related to human production and life. Their production volume and economic and social benefits are extremely huge. These four general types of polyolefin materials have their own many advantages, but also have their own disadvantages. The shortcomings of these materials can be improved by blending or copolymerization modification or chemical modification, and some new properties can be obtained, the variety of materials can be increased, and the application range of materials can be expanded. [0003] After halogenation modification of general polymers, the haloge...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F10/02C08F10/06C08F14/06C08F12/08C08F10/10C08F8/22C08F8/20B29C47/92B29C48/405B29C48/92
CPCB29C48/92B29C2948/92704B29C48/04B29C48/9185B29C2948/92514B29C2948/92895B29C2948/92914B29B7/603B29B7/46B29B7/845B29B7/823B29B7/726B29B7/94B29B7/007B29C48/405B29B7/7485B29B7/748
Inventor 刘青袁荞龙刘峰潘泳康葛瑞思
Owner 江苏圣杰实业有限公司
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