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Controllable polymerization method and device of hexafluoropropene trimer

A technology of hexafluoropropylene trimer and hexafluoropropylene, applied in chemical instruments and methods, preparation of halogenated hydrocarbons, organic chemistry, etc., can solve the problems of cumbersome post-processing and achieve low cost, strong controllability, and utilization rate-boosting effect

Inactive Publication Date: 2019-05-10
TIANJIN CHANGLU CHEM NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The liquid-phase method has a higher primary conversion rate and yield, better selectivity by adjusting the process parameters, lower requirements for reaction control than the gas-phase method, and less investment in pilot equipment, but requires no water for raw materials, catalysts, and solvents. Post-processing is more cumbersome

Method used

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  • Controllable polymerization method and device of hexafluoropropene trimer

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Experimental program
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Effect test

Embodiment 1

[0018] Embodiment 1: Preparation of raw material of hexafluoropropylene trimer: pass hexafluoropropylene gas through a catalytic reaction tube equipped with NaF / Al2O3 catalyst, the loading capacity of the catalyst is 10%, the temperature of the catalytic reaction tube of the catalyst is 260 ° C, contact The time is 0.1s; the reacted mixed gas enters the condenser with a cooling jacket from the air inlet, the temperature of the condensed water is 10°C, and the unreacted hexafluoropropylene is circulated to the catalytic reaction tube of the catalyst through the outlet. The purity of the liquid hexafluoropropylene trimer in the condenser was detected to be 99.3%. The yield of hexafluoropropylene trimer is shown in Table 1.

Embodiment 2

[0019] Example 2: Preparation of raw materials for hexafluoropropylene trimer: pass hexafluoropropylene gas through a catalytic reaction tube equipped with an AgF / C catalyst, the loading of the catalyst is 15%, the temperature of the catalytic reaction tube of the catalyst is 300 ° C, contact The time is 10s; the reacted mixed gas enters the condenser with a cooling jacket from the air inlet, the temperature of the condensed water is 10°C, and the unreacted hexafluoropropylene is circulated to the catalytic reaction tube of the catalyst through the outlet. The purity of the liquid hexafluoropropylene trimer in the condenser is 99.3%. The yield of hexafluoropropylene trimer after applying mechanically is shown in Table 1.

Embodiment 3

[0020] Example 3: Preparation of raw materials for hexafluoropropylene trimer: pass hexafluoropropylene gas through a catalytic reaction tube equipped with a KF / C catalyst, the loading of the catalyst is 20%, the temperature of the catalyst catalytic reaction tube is 320 ° C, contact The time is 30s; the reacted mixed gas enters the condenser with a cooling jacket through the air inlet, the temperature of the condensed water is 10°C, and the unreacted hexafluoropropylene is circulated to the catalytic reaction tube of the catalyst through the outlet. The purity of the liquid hexafluoropropylene trimer in the condenser is 99.3%. The yield of hexafluoropropylene trimer after applying mechanically is shown in Table 1.

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Abstract

The invention belongs to the field of fluorine chemical engineering and particularly relates to a controllable polymerization method and device of hexafluoropropene trimer. The hexafluoropropene trimer is made by gaseous reaction of hexafluoropropene under the catalysis of a supported ionic fluoride; the reaction temperature is 260-320 DEG C; contact time is 0.1-30 s; the ionic fluoride supportingcapacity is 10-20%; a supporter is activated carbon, aluminum trioxide, silicon dioxide or magnesium oxide; the ionic fluoride is AgF, NaF, KF, RbF or CsF. The novel route herein is suitable for existing manufacturers of fluoride products and the advantages of long-term reusability, low cost and significant economic benefit.

Description

technical field [0001] The invention belongs to the field of fluorine chemical industry, and in particular relates to a controllable polymerization method and device of hexafluoropropylene trimer. Background technique [0002] The oligomerization of hexafluoropropylene to obtain dimers and trimers are very useful chemical raw materials, and can be derived from many fluorine-containing surfactants. The hydrophobic perfluorocarbon chain of hexafluoropropylene oligomer is highly branched, which adds some special physical properties compared with general linear perfluorosurfactants. It can be used alone or in combination with other surfactants, so it can play a unique role in detergents, plastic coatings, textiles, leather, petroleum, electronics, pigments and other fields. For example: the perfluoroalkyl ether generated by the reaction of the oligomer of hexafluoropropylene and phenol can be reacted with oleum to produce a sulfonate-type fluorosurfactant. The reaction of perf...

Claims

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Application Information

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IPC IPC(8): C07C17/281C07C21/18
Inventor 肖鑫贺光瑞姚素梅
Owner TIANJIN CHANGLU CHEM NEW MATERIAL CO LTD
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