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Perfluoropolyether modified silane compound and surface treatment composition containing same and thin film

A silane compound, perfluoropolyether technology, applied in polyether coatings, biocide-containing paints, coatings, etc., can solve safety hazards, reduce the possibility of multiple bonding, and improve stain resistance. Maximize and other problems, to achieve the effect of good slippery, high durability, excellent antifouling

Active Publication Date: 2016-07-20
龙岩思康新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In the scheme disclosed in Chinese invention patent CN101456947B, the two silane groups are placed aside, but due to the use of aminoamide groups with a relatively bulky stereo structure and a large stereo barrier, the possibility of multiple bonding is reduced, and its After chemical bonding, the closeness between the treatment agent fragment and the substrate may not be fully exerted, resulting in the improvement of the anti-staining performance cannot be maximized
[0006] Chinese invention patent application CN104769009A discloses another polyfunctional silane group structure. Although its product purity and wear resistance have been greatly improved, it still has the disadvantages of potential safety hazards and high energy consumption. Including low-boiling flammable solvents (ether or THF) and a large amount of allylmagnesium bromide, which is of concern for safety, may cause safety hazards

Method used

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  • Perfluoropolyether modified silane compound and surface treatment composition containing same and thin film
  • Perfluoropolyether modified silane compound and surface treatment composition containing same and thin film
  • Perfluoropolyether modified silane compound and surface treatment composition containing same and thin film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Embodiment 1 Synthetic perfluoropolyether modified silane compound JE

[0030] Step (A-1): Reduction of acyl fluoroethers to fluoroether alcohols (B-6)

[0031] In a 3.0L four-necked flask equipped with a stirrer, dropping funnel, reflux condenser and thermometer, 330 g of diglyme and 11.4 g (0.3 mol) of NaBH 4 , and then 700g (0.175 moles) by chemical formula F-(CF 2 CF 2 O) n (CF 2 O) n -CF 2A fluoropolyperfluorooxirane fluoride ether compound represented by -COF (average molecular weight: 3000) was added dropwise to the above-mentioned raw material mixture at a rate of 10 mL / minute under nitrogen blanketing. After completion of the dropwise addition, the temperature of the liquid phase was raised to about 90° C., and the reaction was carried out at this reaction temperature for 6 hours. After the reaction, the mixture in the flask was stirred and cooled to below 40°C, then slowly added 700 grams of 10% hydrochloric acid aqueous solution therein to carry out th...

Embodiment 2

[0042] Embodiment 2 Synthesis of perfluoropolyether modified silane compound PE

[0043] Reaction of acyl fluoride ether with lithium iodide to generate corresponding fluoroether iodide (KE-1)

[0044] Add 164 grams by chemical formula F-(CF 2 CF 2 O) n (CF 2 O) n -CF 2 Add 3.5 grams of lithium iodide to the fluoropolyperfluoroethylene oxide group represented by -COF (the average molecular weight is 3000), and then react at 180°C for 10 hours after nitrogen replacement, and then cool to room temperature. After removing the solid matter in the reaction mixture, 160 g of reaction crude product can be obtained. This crude product is known to be the target compound KE-1 of following two structures through NMR analysis: and the mixture of by-product KE-2 (approximate ratio is 90:10):

[0045] CF 3 CF 2 O-(CF 2 CF 2 O) m -(CF 2 O) n -CF 2 -I(KE-1)

[0046] CF 3 CF 2 O-(CF 2 CF 2 O) m -(CF 2 O) n -CF 2 -H(KE-2)

[0047] Using infrared and NMR spectroscopic an...

Embodiment 3

[0074] Embodiment 3 synthetic comparison compound DR

[0075] Step (BR-1): (B-6) carry out allylation reaction with allyl bromide

[0076] In a dry box filled with nitrogen, put 1.0 g (0.25 moles) of finely powdered sodium hydroxide into a 300 mL four-necked flask, and then, under nitrogen protection, equip a stirrer, a liquid funnel, a reflux condenser and a thermometer in the On the 300mL four-necked flask, after completion, the whole reaction system was first purged with nitrogen, and then the 50g (0.125 moles) produced in the above step (A-1) had the molecular formula F-(CF 2 CF 2 O) n CF 2 O) n -CF 2 - - CH 2 OH perfluoropolyethylene oxide alcohol (B-6), and under the condition of continuous stirring, use 30 grams of 1,3-bis(trifluoromethyl)benzene solvent to dissolve the above-mentioned perfluoropolyethylene oxide The alkanol (B-6) was dissolved and washed twice and transferred to the reaction flask filled with sodium hydroxide. After the transfer was complete, ...

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PUM

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Abstract

The invention relates to a perfluoropolyether modified silane compound and a surface treatment composition with the same and a thin film.The surface treatment composition is prepared from, by weight, 0.1% to 20% of perfluoropolyether modified silane compound and 80% to 99.9% of solvent.The thin film is formed by coating the surface treatment composition.The perfluoropolyether modified silane compound is a fluorinated polysiloxane material with good self-assembly monomolecular coating properties, the fluorinated polysiloxane material can be used for forming the thin film with high durability, good smoothness and excellent antifouling properties and scratch resistance and can be used as an antifouling layer of an optical component and a fingerprint resisting layer of a display device, and commercial applying value is achieved.

Description

technical field [0001] The invention relates to a fluorosilicon material and surface treatment technology, in particular to a perfluoropolyether modified silane compound and a surface treatment composition and film containing the same. Background technique [0002] Anti-reflective coatings, optical filters, optical lenses, spectacle lenses, beam splitters, prisms, mirrors and other optical components and medical and sanitary appliances are easily contaminated by fingerprints, skin oils, sweat, cosmetics, etc. during use. Such stains, once attached, are difficult to remove, especially stains attached to optical parts with anti-reflection coatings are more conspicuous, and cause various problems. [0003] In order to solve this problem, a so-called silane coupling technique combining inorganic materials such as glass and organic materials has been proposed. The silane coupling agent has an organic functional group or chemical structure with good affinity with organic material...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G65/336C08G65/337C09D171/02C09D5/16
CPCC08G65/336C08G65/337C08G2650/04C09D5/1662C09D171/02
Inventor 程思聪汤国彰
Owner 龙岩思康新材料有限公司