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Fluorosurfactant free of perfluorooctanoic acid as well as preparation method and process system of fluorosurfactant

A surfactant, perfluorooctanoic acid technology, applied in the field of fluoropolymers and their synthesis, can solve the problems that chemical characteristics cannot be characterized by any molecular chain or group in its structural formula, vary widely, and are magnified

Active Publication Date: 2015-12-23
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

AI Technical Summary

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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  • Fluorosurfactant free of perfluorooctanoic acid as well as preparation method and process system of fluorosurfactant
  • Fluorosurfactant free of perfluorooctanoic acid as well as preparation method and process system of fluorosurfactant
  • Fluorosurfactant free of perfluorooctanoic acid as well as preparation method and process system of fluorosurfactant

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Experimental program
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Embodiment 1

[0141] This embodiment proposes a fluorine-containing surfactant that does not contain perfluorooctanoic acid. A repeating structural unit with a carboxyl group or a carboxylate salt at one end consisting of one or more combinations of the Y group selected from , R=halogen, the fluorosurfactant satisfies:

[0142] Acid value: 148mg / g;

[0143] Peroxygen value: 0.001%;

[0144] Boiling point: 130°C;

[0145] Surface tension: 10mN / m;

[0146] Critical micelle concentration: 0.05%;

[0147] Perfluorooctanoic acid and its salts: 0.

Embodiment 2

[0149] The fluorine-containing surfactant involved in this embodiment is a band at one end consisting of at least one oxyperfluoropropylene group and one or more combinations selected from perfluoromethoxy, Y groups, and oxyperfluoroethylene groups. The repeating structural unit of carboxyl or carboxylate, the Y group is selected from , R=hydrogen, the fluorosurfactant satisfies:

[0150] Acid value: 120mg / g;

[0151] Peroxide value: 1%;

[0152] Boiling point: 300°C;

[0153] Surface tension: 30mN / m;

[0154] Critical micelle concentration: 5%;

[0155] Perfluorooctanoic acid and its salts: 0.

Embodiment 3

[0157] The structure of the fluorosurfactant involved in the present embodiment is:

[0158]

[0159] Among them, the Y group is selected from , R=halogen,

[0160] Based on the molecular weight of the polymer, the content of halogen or hydrogen: 1%, n: 1, m / n: 0.01.

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Abstract

The invention discloses a fluorosurfactant free of perfluorooctanoic acid as well as a preparation method and a process system of the fluorosurfactant. The fluorosurfactant is a repeated structure unit which comprises at least one oxoperfluoropropenyl and one or a combination of more of perfluoromethoxyl, a Y group and oxoperfluorovinyl and is provided with a carboxyl group or carboxylate at one end. The fluorosurfactant is a fluoropolymer with the C-O-C ether bond structure as the main structural body; in view of indexes, the fluorosurfactant does not contain perfluorooctanoic acid with a 8-C straight-chain structure or salt of the perfluorooctanoic acid, is easily decomposed in nature and is proved to be harmless to human bodies, the peroxide value is 0.001%-0.1%, the surface tension is 10-30 mN / m, and the fluorosurfactant has an amphiphilic structure of a surfactant.

Description

technical field [0001] The invention relates to a fluorine-containing surfactant without perfluorooctanoic acid, a preparation method and a process system thereof, specifically relates to a fluorine-containing polymer used as a surfactant, a synthesis method and a process system thereof, and belongs to the field of synthesis of organic matter. 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 pr...

Claims

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Application Information

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IPC IPC(8): B01F17/44C07C59/135C07C51/04C07C51/41C09K23/44
Inventor 刘皓
Owner 成都晨光博达新材料股份有限公司
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