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Nonionic fluorine-containing surfactant and preparation method and application thereof

A surfactant and non-ionic technology, applied in the field of new fluorine-containing materials, can solve the problems of waste, waste gas and waste residues polluting the environment, etc., and achieve the effect of cheap price and good wetting effect

Active Publication Date: 2019-07-12
SANMING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

From the perspective of full utilization of resources, this is undoubtedly a huge waste, and the waste gas and residue generated after treatment will also pollute the environment.

Method used

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  • Nonionic fluorine-containing surfactant and preparation method and application thereof
  • Nonionic fluorine-containing surfactant and preparation method and application thereof
  • Nonionic fluorine-containing surfactant and preparation method and application thereof

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preparation example Construction

[0031] The present invention also provides the preparation method of the nonionic fluorine-containing surfactant, which comprises: making polyether with primary hydroxyl and octafluoroisobutylene under weakly acidic or neutral, solvent or solvent-free conditions at a certain temperature obtained by an addition reaction. The chemical structural formula of octafluoroisobutene is represented by (II):

[0032]

[0033] The polyether preparation method of primary hydroxyl is known, including some commercial products, such as MPEG350 (methoxy end-capping, molecular weight is 350), MPEG400 (methoxyl end-capping, molecular weight is 400), MPEG600 (methoxyl end-capping, molecular weight is 400), MPEG600 (methoxy end-capping, molecular weight 600), MPEG750 (methoxy end-capping, molecular weight 750) and so on.

[0034] Octafluoroisobutene contains two trifluoromethyl groups on one carbon on the olefinic bond, and trifluoromethyl groups have a strong electron-withdrawing effect, resu...

Embodiment 1

[0044] Vacuumize the pressure reactor with nitrogen for 3 times, then add 70g (0.2mol) MPEG350, 0.01g p-toluenesulfonic acid, 38g (0.19mol) octafluoroisobutyl ester, react at 60°C for 12h, octafluoroisobutene After the reaction was complete, a small amount of fluoroisobutylene was removed by blowing nitrogen gas, absorbed by methanol, and 106 g of a colorless and transparent liquid was obtained, and the conversion rate was 98.1%. The chemical structure of the product is 1 H NMR characterization. 1 H NMR (400MHz, CDCl 3 ), δ (TMS, ppm), 3.40 (3H, -CH 3 ), 3.52 (32H, -CH 2 -), 3.98 (1H, =CH-).

Embodiment 2

[0046] Vacuumize the pressure reactor with nitrogen for 3 times, then add 80g (0.2mol) of MPEG400, 0.003g of trifluoroacetic acid, 39g (0.195mo) of octafluoroisobutene, react at 50°C for 15h, the reaction of octafluoroisobutene is complete, and blow with nitrogen Remove traces of fluoroisobutylene and absorb it with methanol. 111.1 g of a colorless and transparent liquid can be obtained, and the conversion rate is 93.2%. The chemical structure of the product is 1 H NMR characterization. 1 H NMR (400MHz, CDCl 3 ), δ (TMS, ppm), 3.40 (3H, -CH 3 ), 3.52 (36H, -CH 2 -), 3.98 (1H, =CH-).

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Abstract

The invention provides a nonionic fluorine-containing surfactant and a preparation method and the application thereof and belongs to the field of fluorine-containing novel materials. The structure ofthe nonionic fluorine-containing surfactant is as shown in a formula (I). The surfactant does not contain PFOA matters and is an environment-friendly nonionic fluorine-containing base material wettingagent low in price. The nonionic fluorine-containing surfactant can be used as a base material wetting agent in an underwater coating and has a good wetting effect. The preparation method of the nonionic fluorine-containing surfactant is simple and environment-friendly and can achieve continuous production.

Description

technical field [0001] The invention relates to a non-ionic fluorine-containing compound and its preparation method and application, belonging to the field of new fluorine-containing materials. Background technique [0002] Wettability is the tendency of a fluid to spread or adsorb on a solid surface in the presence of an immiscible phase fluid. When applied, the coating should be able to completely wet the substrate in order to obtain a smooth, defect-free surface. In solvent-based coatings, due to the low surface tension of the solvent, there is basically no problem of wetting the substrate. With the increasing attention to environmental issues in the world, water-based coatings have been widely used. The surface tension of water is 72.75×10 -3 N·m -1 , which is greater than the surface tension of ordinary substrates, which brings about the problem of wetting difficulties. [0003] The substrate wetting agent for waterborne coatings based on heptamethyltrisiloxane poly...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01F17/42C07C41/06C07C43/12C09D7/63C09D11/03C09D7/65C08G65/337C09K23/42
CPCC07C41/06C09D7/63C09D11/03C09D7/65C08G65/337C09K23/007
Inventor 程德书罗菊香李奇勇肖旺钏张家坤
Owner SANMING UNIV