A kind of perfluoropolyether alkoxysilane compound and its synthesis method

A technology of perfluoropolyether alkoxysilane, synthesis method, applied in polyurea/polyurethane coatings, paints containing biocide, coatings, etc., can solve the problem of inability to provide adhesion, wear resistance and durability, The problem of small number ratio and poor antifouling performance can achieve the effect of excellent antifouling performance, solving insufficient wear resistance, excellent anti-fingerprint antifouling performance and wear resistance.

Active Publication Date: 2018-12-14
QUZHOU FLUORIDE & SILICON RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the number of alkoxysilane groups in these compounds is relatively small, and they cannot provide sufficient adhesion, wear resistance and durability to the surface of glass and other substrates. As the use time increases, the antifouling performance will become worse and worse.

Method used

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  • A kind of perfluoropolyether alkoxysilane compound and its synthesis method
  • A kind of perfluoropolyether alkoxysilane compound and its synthesis method
  • A kind of perfluoropolyether alkoxysilane compound and its synthesis method

Examples

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preparation example Construction

[0027] A kind of synthetic method of perfluoropolyether alkoxysilane compound, comprises the steps:

[0028] (a) Dilute the HDI trimer with a solvent and add it to the reaction vessel, and then dilute the mixed homogeneous mixture of hydroxyl-terminated perfluoropolyether and 3-(2-aminoethyl)aminopropyltrimethoxysilane with a solvent under stirring Gradually add it dropwise, and after the dropwise addition, stir and keep warm at the reaction temperature for 6 hours.

[0029] (b) Add dropwise 3-(2,3-epoxypropoxy)propyltrimethoxysilane (KH560) with the same molar number as 3-(2-aminoethyl)aminopropyltrimethoxysilane, After continuing to react at the reaction temperature for 6 hours, the perfluoropolyether alkoxysilane compound is obtained.

[0030] The reaction molar ratio of hydroxyl-terminated perfluoropolyether, 3-(2-aminoethyl)aminopropyltrimethoxysilane, KH560, and HDI trimer is 1:2:2:1, and the molecular weight of hydroxyl-terminated perfluoropolyether is MW For 2500-500...

Synthetic example 1

[0036] In a 150ml three-necked flask equipped with a constant temperature magnetic stirrer, a constant pressure dropping funnel and a thermometer, add 25ml of fluoroether solvent and 2.52g (5mmol) of HDI trimer, stir, dilute and dissolve, and then mix the terminal hydroxyl group homogeneously with fluoroether solvent. 12.5g (5mmol, molecular weight MW=2500) of perfluoropolyether and 2.22g (10mmol) of 3-(2-aminoethyl)aminopropyltrimethoxysilane were gradually added dropwise. After the dropwise addition, stirred and kept at 30°C for reaction After 6 hours, add KH560 2.36g (10mmol) dropwise, and after the dropwise addition, stir and keep warm at 30°C for 6 hours to remove the solvent under reduced pressure to obtain the product. The structural formula of the obtained product is:

[0037]

[0038] Wherein PFPE molecular weight MW=2500.

Synthetic example 2

[0040] In a 150ml three-necked flask equipped with a constant temperature magnetic stirrer, a constant pressure dropping funnel and a thermometer, add 25ml of fluoroether solvent and 2.52g (5mmol) of HDI trimer, stir, dilute and dissolve, and then mix the terminal hydroxyl group homogeneously with fluoroether solvent. The mixture of 15g (5mmol, molecular weight MW=3000) of perfluoropolyether and 2.22g (10mmol) of 3-(2-aminoethyl)aminopropyltrimethoxysilane was gradually added dropwise, and the mixture was stirred and kept at 30°C after the dropwise addition for 6 Hours, then add 2.36g (10mmol) of KH560 dropwise, and after the dropwise addition, stir and keep warm at 30°C for 6 hours to remove the solvent under reduced pressure to obtain the product. The structural formula of the resulting product is:

[0041]

[0042] Wherein PFPE molecular weight MW=3000.

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Abstract

The invention discloses a novel perfluoropolyether alkoxysilane compound and a synthesis method thereof. The compound structure is shown in formula (1), and the synthesis method is as follows: hydroxyl-terminated perfluoropolyether (PFPE), 3-(2 ‑Aminoethyl)aminopropyltrimethoxysilane, 3‑(2,3‑glycidoxy)propyltrimethoxysilane (KH560), HDI trimer in a molar ratio of 1:2:2:1 In the reaction process, a certain amount of solvent is used to dilute and mix the hydroxyl-terminated perfluoropolyether, 3-(2-aminoethyl) aminopropyltrimethoxysilane, and then dropwise add the HDI trimer. After reacting for 6 hours at a certain temperature , then add KH560 dropwise, react at a certain temperature for another 6 hours, and then remove the solvent under reduced pressure to obtain the perfluoropolyether alkoxysilane compound of the present invention. The compound can be coated on the surface of glass, plastic, film and other substrates, and after cross-linking and curing, it forms a solid film, endows the substrate with excellent anti-fingerprint and anti-fouling properties, and has excellent wear resistance.

Description

technical field [0001] The invention belongs to the technical field of new fluorosilicone materials, and specifically relates to a novel anti-corrosion compound synthesized by reacting hydroxyl-terminated perfluoropolyether, 3-(2-aminoethyl)aminopropyltrimethoxysilane, KH560 and HDI trimer. Fingerprint, anti-fouling perfluoropolyether alkoxysilane, and applied to the surface of glass and other substrates to form a film to provide excellent anti-fingerprint, anti-fouling performance and wear resistance. Background technique [0002] In recent years, touch panelization of screens, represented by mobile phone displays, is accelerating. However, the exposed state of the touch panel makes it easy to be polluted by fingerprints, skin oil, sweat, cosmetics, etc. during use, which affects its appearance and use. Therefore, in order to improve the appearance and recognition, the technical requirements for making the surface of the display, touch screen and other surfaces easy to rem...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G18/79C08G18/66C08G18/50C08G18/38C09D175/04C09D5/16
CPCC08G18/3893C08G18/5003C08G18/6666C08G18/792C09D5/1662C09D175/04
Inventor 刘国清郦聪李建
Owner QUZHOU FLUORIDE & SILICON RES INST
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