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Metallocene polypropylene subchloride synthetic process by using water phase suspension method

A technology of metallocene polypropylene and chlorinated metallocene, applied in the field of low-chlorinated metallocene polypropylene synthesis process by aqueous phase suspension method, can solve the problem of inability to break the crystallinity of polypropylene and the inability to produce soluble chlorinated polypropylene products , affect product quality and other issues, to achieve the effect of solving low-temperature gel phenomenon, solving the problem of chlorination uniformity, and improving chlorination uniformity

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

[0004] The maximum temperature of the chlorination reaction of the aqueous phase suspension method does not exceed 150°C, and it is impossible to break the crystallinity of polypropylene with a melting point of 164°C to 170°C, so it is impossible to produce soluble chlorinated polypropylene products
The patent No. 200810117179.3 discloses the invention patent for the preparation of chlorinated polypropylene by the heterogeneous mixed solvent method of "chloroform + water system". In this patent, polypropylene is dissolved in chloroform at 100°C to 150°C and chlorinated. This method produces There is no uneven chlorination in the process, which is an improvement to the solvent method, but the solvent residue in the product affects the quality of the product

Method used

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  • Metallocene polypropylene subchloride synthetic process by using water phase suspension method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] 1. Select raw materials: 80 liters of process water, 5Kg of metallocene polypropylene powder or granules, 50g of dispersant, 50g of emulsifier, 3g of initiator, and 5Kg of liquid chlorine.

[0024] 2. Use a 100-liter enamel reactor for emulsification and chlorination reaction

[0025] (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 ...

Embodiment 2

[0030] 1. Select raw materials: 80 liters of process water, 9Kg of metallocene polypropylene powder or granules, 2000g of dispersant, 1000g of emulsifier, 10g of initiator, and 10.8Kg of liquid chlorine.

[0031] 2. Use a 100-liter enamel reactor for emulsification and chlorination reaction

[0032] (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...

Embodiment 3

[0037] 1. Select raw materials: 80 liters of process water, 10Kg of metallocene polypropylene powder or granules, 4500g of dispersant, 3000g of emulsifier, 40g of initiator, and 14Kg of liquid chlorine.

[0038] 2. Use a 100-liter enamel reactor for emulsification and chlorination reaction

[0039](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 metallocene polypropylene subchloride synthetic process by using a water phase suspension method. The metallocene polypropylene subchloride is prepared from the following raw materials of metallocene polypropylene, a dispersant, an emulsifier, an initiator, process water and chlorine molecules at the weight ratio of 1 to (0.01-0.5) to (0.01-0.4) to (0.001-0.05) to (7-20) to (0.6-1.4). By using metallocene polypropylene as a main raw material, the metallocene polypropylene subchloride is prepared, the problem on chloridizing uniformity and low-temperature gelation phenomena in synthesis of CPP by means of heterogeneous reaction are successfully solved, and the chloridizing uniformity of metallocene polypropylene chloride is improved and the solubility of the metallocene polypropylene chloride in an organic solvent is improved. The metallocene polypropylene subchloride can be used as a raw material of an oil paint, printing ink and the like.

Description

technical field [0001] The invention relates to the chemical industry field of polymer materials, in particular to a synthesis process of low-chlorinated metallocene polypropylene by an aqueous phase suspension method. Background technique [0002] Solvent method chlorinated polypropylene (CPP for short) was developed in the 1960s by the United States and Japan, and my country produced CPP industrially in the 1980s. The solvent used in the solvent method is carbon tetrachloride (abbreviated as ODS), and its ability to deplete the ozone layer of the atmosphere is 1.1 times that of Freon. It is a banned solvent stipulated in the United Nations "Montreal Protocol". Developed countries closed all carbon tetrachloride chlorinated polymer production facilities before 1995, and turned to aqueous phase suspension method or new solvent chlorination production process. my country is a developing country, and all carbon tetrachloride production facilities will be closed before 2010. H...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F10/06C08F8/22
Inventor 陈剑平朱晓芹徐晨曦王树东陈凌峰
Owner JIANGSU ZHONGXU POLYMER MATERIALS
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