Preparation system and process of alpha-olefin-fluorostyrene polymer

A fluorostyrene preparation system technology, applied in the field of α-olefin-fluorostyrene polymer preparation system, can solve the problem of low product yield, achieve enhanced mass transfer, reduce liquid film thickness, and improve polymerization efficiency Effect

Active Publication Date: 2021-03-16
NANJING YANCHANG REACTION TECH RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Therefore, the present invention provides a preparation system and process of α-olefin-fluorostyrene polymers to overcome the problems of α-olefin and fluorostyrene in the prior art. The problem of low product yield due to insufficient mixing of polymers

Method used

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  • Preparation system and process of alpha-olefin-fluorostyrene polymer

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0064] Use the system and process of the present invention to prepare alpha olefin-fluorostyrene polymers, wherein:

[0065] The α-olefin monomer is ethylene, the fluorostyrene monomer is p-fluorostyrene, the solvent in the first reactor is deionized water, the solvent in the second reactor is saturated brine, and the emulsifier is sodium dodecylsulfonate , a mixture of sodium lauryl sulfate and sodium laurylamine hydrochloride, and the initiator is hydrogen peroxide solution.

[0066] During pre-emulsification, the stirring rate of the first reactor is 100r / min; during emulsification, the stirring rate of the first reactor is 300r / min, and the reaction temperature is 55°C; during demulsification, the stirring rate of the second reactor The speed is 800r / min, and the reaction pressure is 1atm.

[0067] α olefin monomer, fluorostyrene monomer and α olefin-fluorostyrene polymer were detected before and after operation, and the conversion rate of α olefin monomer was 98.6%, and ...

Embodiment 2

[0069] Use the system and process of the present invention to prepare alpha olefin-fluorostyrene polymers, wherein:

[0070] The α-olefin monomer is ethylene, the fluorostyrene monomer is p-fluorostyrene, the solvent in the first reactor is deionized water, the solvent in the second reactor is saturated brine, and the emulsifier is sodium dodecylsulfonate , a mixture of sodium lauryl sulfate and sodium laurylamine hydrochloride, and the initiator is hydrogen peroxide solution.

[0071] During pre-emulsification, the stirring rate of the first reactor was 130r / min; during emulsification, the stirring rate of the first reactor was 320r / min, and the reaction temperature was 58°C; during demulsification, the stirring rate of the second reactor was The speed is 850r / min, and the reaction pressure is 3atm.

[0072] α olefin monomer, fluorostyrene monomer and α olefin-fluorostyrene polymer were detected before and after operation, and the conversion rate of α olefin monomer was 99.2...

Embodiment 3

[0077] Use the system and process of the present invention to prepare alpha olefin-fluorostyrene polymers, wherein:

[0078] The α-olefin monomer is a mixture of ethylene and propylene, the fluorostyrene monomer is a mixture of o-fluorostyrene, p-fluorostyrene and m-fluorostyrene, the solvent in the first reactor is deionized water, and the solvent in the second reactor is The solvent is saturated saline, the emulsifier is a mixture of sodium dodecylsulfonate, sodium dodecyl sulfate and sodium dodecylamine hydrochloride, and the initiator is hydrogen peroxide solution.

[0079] During pre-emulsification, the stirring rate of the first reactor is 170r / min; during emulsification, the stirring rate of the first reactor is 410r / min, and the reaction temperature is 55°C; during demulsification, the stirring rate of the second reactor The speed is 900r / min, and the reaction pressure is 5atm.

[0080] α olefin monomer, fluorostyrene monomer and α olefin-fluorostyrene polymer were de...

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Abstract

The invention relates to a system and process for preparing an alpha-olefin-fluorostyrene polymer. The system comprises a monomer storage tank, a reaction unit, a micro-interface generator, a filter,a washing unit, a drying box and a heat exchanger. According to the invention, the alpha-olefin monomer is crushed to form micron-scale bubbles, the micron-scale bubble can be fully mixed with fluorostyrene and an additive to form a gas-liquid emulsion, and the alpha-olefin and fluorostyrene in the system can be in full contact with the additive by fully mixing the gas phase and the liquid phase,so that the polymerization efficiency of the system is improved; and meanwhile, the micron-scale bubbles and the materials are mixed to form the gas-liquid emulsion, and the raw materials are fully mixed, so that the phase interface area of a gas phase and a liquid phase is increased, the thickness of a liquid film is reduced, the mass transfer resistance is reduced, and the effect of enhancing mass transfer in a lower preset operation condition range is achieved.

Description

technical field [0001] The invention relates to the technical field of polymers, in particular to a preparation system and process for alpha olefin-fluorostyrene polymers. Background technique [0002] Polyolefins are widely used due to their advantages of non-toxicity, chemical resistance, and excellent mechanical properties, especially in the field of preparing medical devices, which have attracted widespread attention. However, the poor compatibility of polyolefin to blood limits its application to some extent. It is of great significance to improve its compatibility with blood without affecting its mechanical properties. Theoretically, the introduction of fluorine into polyolefin can not only improve the cytotoxicity and hemocompatibility of polyolefin, but also improve its chemical stability and air tightness. Although fluorine elements can be introduced into polyolefins by free radical polymerization, metathesis polymerization and other methods in the prior art, the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F210/00C08F210/02C08F210/06C08F210/08C08F212/14C08F2/01
CPCC08F210/00C08F210/02C08F210/06C08F210/08C08F212/14C08F2/01
Inventor 张志炳李磊周政张锋孟为民王宝荣杨高东罗华勋杨国强田洪舟曹宇
Owner NANJING YANCHANG REACTION TECH RES INST CO LTD
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