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Perfluoropolyether siloxane compound and synthesis method and application thereof

A technology of perfluoropolyether siloxane and synthesis method, which is applied in polyether coatings, biocide-containing paints, coatings, etc., can solve the problem of poor antifouling performance, inability to provide sufficient adhesion, wear resistance and Durability, low ratio, etc.

Active Publication Date: 2019-06-18
RUYUAN DONGYANG LIGHT FLUORIDE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the proportion of siloxane contained in the above-mentioned compounds is relatively low, and it 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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  • Perfluoropolyether siloxane compound and synthesis method and application thereof
  • Perfluoropolyether siloxane compound and synthesis method and application thereof
  • Perfluoropolyether siloxane compound and synthesis method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0084] (1) 300g perfluoropolyether acid fluoride (n=12, Mw=2158g / mol) and 44.49g methanol were stirred and reacted at room temperature for 24h, the molar ratio of perfluoropolyether acid fluoride to methanol was 1:10, and the reaction At the end, the reaction mixture was placed in a separatory funnel, washed three times with methanol, and the lower layer sample was distilled under reduced pressure to obtain perfluoropolyether methyl ester. Add 100g of perfluoropolyether methyl ester (Mw=2170g / mol) in the three-necked flask, add a total of 10.46g of NaBH in 3 times 4 , perfluoropolyether methyl ester and NaBH 4 The molar ratio is 1:6, add 200mL of absolute ethanol, and stir at room temperature under nitrogen protection for 24h to obtain perfluoropolyether methanol.

[0085] (2) Under nitrogen protection, add 50g of perfluoropolyether methanol (Mw=2142g / mol) and 3.41g of potassium tert-butoxide into a three-necked flask, add 75mL of tert-butanol as a reaction solvent, and then ...

Embodiment 2

[0089] (1) 300g perfluoropolyether acid fluoride (n=17, Mw=2988g / mol) and 64.26g methanol were stirred and reacted at room temperature for 24h, the molar ratio of perfluoropolyether acid fluoride to methanol was 1:20, and the reaction At the end, the reaction mixture was placed in a separatory funnel, washed three times with methanol, and the lower layer sample was distilled under reduced pressure to obtain perfluoropolyether methyl ester. Add 100g of perfluoropolyether methyl ester (Mw=3000g / mol) into the three-necked flask, add a total of 8.20g of NaBH in 3 times 4 , perfluoropolyether methyl ester and NaBH 4 The molar ratio is 1:6.5, add 200mL of absolute ethanol, stir and react at room temperature under nitrogen protection for 24h, and obtain perfluoropolyether methanol.

[0090] (2) Under the protection of nitrogen, add 50g of perfluoropolyether methanol (Mw=2972g / mol) and 2.45g of potassium tert-butoxide into a three-necked flask, add 75mL of tert-butanol as a reaction ...

Embodiment 3

[0094] (1) 300g perfluoropolyether acid fluoride (n=25, Mw=4316g / mol) and 44.49g methanol were stirred and reacted at room temperature for 24h, the molar ratio of perfluoropolyether acid fluoride to methanol was 1:20, and the reaction At the end, the reaction mixture was placed in a separatory funnel, washed three times with methanol, and the lower layer sample was distilled under reduced pressure to obtain perfluoropolyether methyl ester. Add 100g of perfluoropolyether methyl ester (Mw=4328g / mol) in the three-necked flask, add a total of 6.99g of NaBH in 3 times 4 , perfluoropolyether methyl ester and NaBH4 The molar ratio is 1:8, add 200mL of absolute ethanol, and stir at room temperature under nitrogen protection for 24h to obtain perfluoropolyether methanol.

[0095] (2) Under the protection of nitrogen, add 50g of perfluoropolyether methanol (Mw=4300g / mol) and 1.96g of potassium tert-butoxide into a three-necked flask, add 75mL of tert-butanol as a reaction solvent, and t...

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Abstract

The invention discloses a perfluoropolyether siloxane compound with a tail end rich in siloxy groups and a synthesis method and application of the compound. A structural formula of the compound is shown in a formula (I), and the synthesis method comprises the following steps: preparing perfluoropolyether methyl ester by taking perfluoropolyether acyl fluoride as a raw material, and further performing reduction to prepare perfluoropolyether methanol; then enabling the perfluoropolyether methanol to react with allyl bromide to obtain allyl perfluoropolyether; further oxidizing the allyl perfluoropolyether to obtain perfluoropolyether diol; and finally enabling the perfluoropolyether diol to react with chloropropyltrimethoxysilane to obtain the perfluoropolyether siloxane compound with the tail end rich in the siloxy groups. The perfluoropolyether siloxane compound synthesized by the invention has excellent antifouling property and wear resistance; when the perfluoropolyether siloxane compound is applied to substrates such as glass, ceramics and plastic, a layer of firm anti-fingerprint coating can be formed on the surfaces of the substrates, and meanwhile, the original transparency of the substrates is kept; and the perfluoropolyether siloxane compound is particularly suitable for being used as an anti-fingerprint agent.

Description

technical field [0001] The present invention relates to the field of fluorosilicon new materials and substrate surface treatment, in particular to a perfluoropolyether siloxane compound rich in polysiloxane groups at the end and its synthesis method, and its application to the surface of substrates such as glass to provide Excellent anti-fingerprint, anti-smudge and abrasion 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, etc. easy to remove dirt and resist fingerprints are getting higher and higher. When wiping, its surface is not easy to cause scratches, and it mu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G65/338C08G65/331C08G65/328C08G65/337C08G65/336C09D171/02C09D5/16
Inventor 李义涛刘群方阳峰侯琴卿贾渊程珍
Owner RUYUAN DONGYANG LIGHT FLUORIDE CO LTD
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