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Production technology for preparing fluorine-containing surfactant free from perfluoro caprylic acid

A surfactant, perfluorooctanoic acid technology, applied in the directions of dissolution, chemical instruments and methods, chemical/physical processes, etc., can solve the problem of magnification, chemical characteristics that cannot be characterized by any molecular chain or group in its structural formula, and various differences. and other problems, to achieve the effect of reducing surface tension, good surface activity characteristics, and good surface activity

Inactive Publication Date: 2015-12-16
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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  • Production technology for preparing fluorine-containing surfactant free from perfluoro caprylic acid
  • Production technology for preparing fluorine-containing surfactant free from perfluoro caprylic acid
  • Production technology for preparing fluorine-containing surfactant free from perfluoro caprylic acid

Examples

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Effect test

Embodiment 1

[0059] This embodiment proposes a kind of production process of preparing the fluorosurfactant not containing perfluorooctanoic acid, comprising the following steps:

[0060] A: At a temperature of -20°C, send perfluoroalkene, oxygen and a third monomer into the photooxidation reactor, and produce acyl fluoride-containing end group products after photooxidation;

[0061] B: Send the product containing acyl fluoride terminal group into the hydrolysis reaction kettle, and obtain a fluorine-containing low polymer with a carboxylic acid group at one end after hydrolysis;

[0062] C: Send the fluorine-containing low polymer prepared in step B into a heat treatment reactor, and obtain a fluorine-containing oily polymer with a peroxy group of less than 1g / 100g and a carboxylic acid and its salt at one end after the peroxygen removal treatment;

[0063] D: Send the fluorine-containing oily polymer obtained in step C into a neutralization reactor, obtain a finished fluorine-containing ...

Embodiment 2

[0073] The production process for preparing the fluorosurfactant not containing perfluorooctanoic acid involved in this embodiment comprises the following steps:

[0074] A: At a temperature of -25°C, send perfluoroalkene, oxygen and a third monomer into the photooxidation reactor, and produce acyl fluoride-containing end group products after photooxidation;

[0075] B: Send the product containing acyl fluoride terminal group into the hydrolysis reaction kettle, and obtain a fluorine-containing low polymer with a carboxylic acid group at one end after hydrolysis;

[0076] C: Send the fluorine-containing low polymer prepared in step B into a heat treatment reactor, and obtain a fluorine-containing oily polymer with a peroxy group of less than 1g / 100g and a carboxylic acid and its salt at one end after the peroxygen removal treatment;

[0077] D: Send the fluorine-containing oily polymer obtained in step C into a neutralization reactor, obtain a finished fluorine-containing surf...

Embodiment 3

[0087] 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 production technology for preparing a fluorine-containing surfactant free from perfluoro caprylic acid. The production technology includes the steps of photooxidation, hydrolysis, peroxide removing treatment and neutralization, perfluoroolefine, oxygen and a third monomer serve as reaction raw materials and are prepared into a fluorine-containing surfactant finished product with a C-O-C ether bond structure as the structural body, the finished product index meets the requirement that the surfactant is free from perfluoro caprylic acid and salts thereof, the surfactant is easy to decompose in the nature, the finished product index meets the data range that the peroxide value is 0.001-1%, and the surface tension is 10-30 mN / m; the fluorine-containing surfactant is of an amphiphilic structure of surfactants and suitable for industrial mass production.

Description

technical field [0001] The invention relates to a production process for preparing a fluorine-containing surfactant without perfluorooctanoic acid, specifically relates to a process synthesis route 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 rubber ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01F17/44B01F17/42C09K23/44C09K23/42
Inventor 刘皓
Owner 成都晨光博达新材料股份有限公司
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