Continuous production technology of fluorine-containing surfactant without perfluorocaprylic acid

A surfactant, perfluorooctanoic acid technology, applied in organic chemistry, carboxylate preparation, carboxylate preparation, etc., can solve the problem that chemical characteristics cannot be characterized by any molecular chain or group in its structural formula, vary widely, and are Amplification and other problems, to achieve the effect of good surface activity characteristics, low yield, and avoid hidden dangers of production safety

Inactive Publication Date: 2016-02-24
成都晨光博达新材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in the actual application process, we know that the chemical characteristics of the product cannot be characterized by any molecular chain or group in its structural formula, and any change in any molecular chain, group or substituent in the structural formula may cause The properties of products vary greatly, especially in large-scale industrial production, even if the small features or defects of products are not shown in the laboratory preparation process, they are very likely to be magnified in large-scale industrial production. Therefore, in modern In industrial production, qualitative testing of products is not only the only standard for testing product qualification, but also an important indicator for testing product preparation process. Only when industrial products meet the technical requirements can industrial production be guaranteed not to be eliminated by the market

Method used

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  • Continuous production technology of fluorine-containing surfactant without perfluorocaprylic acid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] This embodiment proposes a continuous production process for a fluorosurfactant that does not contain perfluorooctanoic acid, comprising the following steps:

[0057] A: Perfluoroalkene, oxygen and a third monomer (such as chloroacetylene) continuously enter the photooxidation reaction loop at a temperature of 0°C and a pressure of 0.1Mpa, and produce terminal products containing acyl fluoride after photooxidation;

[0058] B: Send the product containing acyl fluoride end group to the hydrolysis unit, after hydrolysis and separation, obtain a fluorine-containing low polymer with a carboxylic acid group at one end;

[0059] C: Feed the fluorine-containing low polymer with a carboxylic acid group at one end obtained in step B into the salt-forming configuration unit, and after the salt-forming configuration, the finished fluorine-containing surfactant is obtained, and the finished fluorine-containing surfactant is sent to finished product storage tanks for storage,

[00...

Embodiment 2

[0068] The continuous production process of the fluorosurfactant not containing perfluorooctanoic acid involved in this embodiment comprises the following steps:

[0069] A: Perfluoroolefins, oxygen and a third monomer (such as vinylidene fluoride) continuously enter the photooxidation reaction loop at a temperature of 20°C and a pressure of 0.5Mpa, and produce terminal products containing acyl fluoride after photooxidation;

[0070] B: Send the product containing acyl fluoride end group to the hydrolysis unit, after hydrolysis and separation, obtain a fluorine-containing low polymer with a carboxylic acid group at one end;

[0071] C: Feed the fluorine-containing low polymer with a carboxylic acid group at one end obtained in step B into the salt-forming configuration unit, and after the salt-forming configuration, the finished fluorine-containing surfactant is obtained, and the finished fluorine-containing surfactant is sent to finished product storage tanks for storage,

...

Embodiment 3

[0080] The difference between this example and Example 1 is that in step A involved in this example, the mass ratio of perfluoroolefin to the third monomer is 1:1.

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Abstract

The invention discloses a continuous production technology of a fluorine-containing surfactant without perfluorocaprylic acid. The continuous production technology comprises the following steps: using perfluoroolefine, oxygen and a third monomer as reaction raw materials, and adopting a photooxidation reaction loop, a hydrolysis unit and a salt-forming configuration unit respectively to prepare a fluorine-containing surfactant finished product using a C-O-C ether bond structure as a structure body. The finished product indexes not only meet that perfluorocaprylic acid and salt thereof are not contained, the fluorine-containing surfactant is easily degraded in the nature, but also meet data ranges that the peroxide value is 0.001-1% and the surface tension is 10-30 m/Nm. An amphipathic structure having the surfactant has advantages of high product yield, small product quality fluctuation and the like.

Description

technical field [0001] The invention relates to a continuous production process of a fluorine-containing surfactant without perfluorooctanoic acid, specifically relates to a continuous synthesis process of a fluorine-containing polymer used as a surfactant, and belongs to the field of organic compound synthesis. Background technique [0002] Fluoropolymer is a special basic material with high added value, and its development is closely related to the use requirements of cutting-edge scientific fields such as military, aviation, aerospace and nuclear industries. However, based on the existing problems in the production of fluoropolymers in China, we know that the quality factor of fluoropolymers produced by domestic enterprises is relatively low at present, which cannot meet the market demand. The production is mainly based on low-end polymer fluorine-containing products. Such as: PTFE emulsion, PTFE powder, etc., especially high value-added products such as perfluoroether ru...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01F17/44C07C51/41C07C51/02C07C59/135C09K23/44
CPCC07C51/02C07C51/412C07C59/135C09K23/007
Inventor 刘皓
Owner 成都晨光博达新材料股份有限公司
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