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Medium/high chlorinated metallocene polypropylene synthesis technique by water-phase suspension process

A technology of metallocene polypropylene and chlorinated metallocene, which is applied in the field of high-chlorinated metallocene polypropylene synthesis technology, can solve problems such as unformed industrialized production, avoid environmental pollution problems, improve chlorination uniformity, and solve Chlorination uniformity problems and effects of high temperature gelation

Inactive Publication Date: 2015-01-14
JIANGSU ZHONGXU POLYMER MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The Industrial Development Research Institute of Tsinghua University and Qingdao Institute of Chemical Technology have also developed the production process of aqueous phase suspension method, but it is limited to academic reports and has not formed industrial production

Method used

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  • Medium/high chlorinated metallocene polypropylene synthesis technique by water-phase suspension process

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] 1. Select raw materials: 80 liters of process water, 5Kg of metallocene polypropylene powder or granules, 60g of dispersant, 60g of emulsifier, 5g of initiator, and 9Kg of liquid chlorine;

[0025] 2. Use a 100-liter enamel reactor for emulsification and chlorination reaction

[0026] (1) Add process water into the reaction kettle, start stirring, add dispersant, emulsifier and metallocene polypropylene powder or granules in turn, open the steam valve of the reaction kettle to emulsify at room temperature, emulsify for 30 minutes, when the temperature in the kettle rises to 85~ At 90°C, add an initiator to the reaction kettle, close the reaction kettle, start to introduce chlorine gas, control the temperature of the kettle at 90-95°C, and chlorinate the polypropylene in the aqueous phase suspension. As the amount of chlorine increases, the temperature of the material in the reactor also increases. Controlling the reaction temperature is the key factor for the smooth p...

Embodiment 2

[0031] 1. Select raw materials: 80 liters of process water, 8Kg of metallocene polypropylene powder or granules, 2000g of dispersant, 1000g of emulsifier, 30g of initiator, and 16Kg of liquid chlorine;

[0032] 2. Use a 100-liter enamel reactor for emulsification and chlorination reaction

[0033] (1) Add process water into the reaction kettle, start stirring, add dispersant, emulsifier and metallocene polypropylene powder or granules in turn, open the steam valve of the reaction kettle to emulsify at room temperature, emulsify for 30 minutes, when the temperature in the kettle rises to 85~ At 90°C, add an initiator to the reaction kettle, close the reaction kettle, start to introduce chlorine gas, control the temperature of the kettle at 90-95°C, and chlorinate the polypropylene in the aqueous phase suspension. As the amount of chlorine increases, the temperature of the material in the reactor also increases. Controlling the reaction temperature is the key factor for the sm...

Embodiment 3

[0038] 1. Select raw materials: 80 liters of process water, 11Kg of metallocene polypropylene powder or granules, 5000g of dispersant, 4000g of emulsifier, 45g of initiator, and 44Kg of liquid chlorine;

[0039] 2. Use a 100-liter enamel reactor for emulsification and chlorination reaction

[0040] (1) Add process water into the reaction kettle, start stirring, add dispersant, emulsifier and metallocene polypropylene powder or granules in turn, open the steam valve of the reaction kettle to emulsify at room temperature, emulsify for 30 minutes, when the temperature in the kettle rises to 85~ At 90°C, add an initiator to the reaction kettle, close the reaction kettle, start to introduce chlorine gas, control the temperature of the kettle at 90-95°C, and chlorinate the polypropylene in the aqueous phase suspension. As the amount of chlorine increases, the temperature of the material in the reactor also increases. Controlling the reaction temperature is the key factor for the s...

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Abstract

The invention discloses a medium / high chlorinated metallocene polypropylene synthesis technique by a water-phase suspension process. The metallocene polypropylene:process water:dispersing agent:emulsifier:initiator:chlorine molecule weight ratio is 1:(7-20):(0.01-0.5):(0.01-0.4):(0.001-0.05):(1.4-4.8). By preparing the high chlorinated metallocene polypropylene mainly from the metallocene polypropylene, the technique successfully solves the chlorination uniformity problem and high temperature gel phenomenon in the CPP (chlorinated polypropylene) synthesis by heterogeneous reaction, enhances the chlorination uniformity of the chlorinated metallocene polypropylene and the solubility of the chlorinated metallocene polypropylene in organic solvents, and avoids the problem of the environmental pollution. The high chlorinated metallocene polypropylene produced by the technique can be used as a raw material of a flame retardant and chlorinated rubber substitute.

Description

technical field [0001] The invention relates to the chemical industry field of polymer materials, in particular to a synthesis process of medium and high-chlorinated metallocene polypropylene by the aqueous phase suspension method. Background technique [0002] Solvent method chlorinated polypropylene (CPP for short) has been industrialized in the United States and Japan since the 1960s, while my country realized industrialized production of CPP in the 1980s. The solvent of the solvent method is carbon tetrachloride (ODS for short), but its ability to deplete the ozone layer of the atmosphere is 1.1 times that of Freon, and it is a banned solvent stipulated in the United Nations "Montreal Protocol". Carbonization method chlorination polymer production equipment, turn to water phase suspension method or new solvent chlorination method production process. my country completed the closure of all carbon tetrachloride production plants before 2010, but my country has no water-ph...

Claims

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Application Information

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IPC IPC(8): C08F10/06C08F8/22
Inventor 陈剑平朱晓芹陈凌峰王树东徐晨曦
Owner JIANGSU ZHONGXU POLYMER MATERIALS
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