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Perfluoropolyether modified dentritic silane derivative, as well as preparation method and application thereof

A technology of silane derivatives and perfluoropolyether, which is applied in the direction of polyether coatings, biocide-containing paints, coatings, etc., can solve the problems of initial contact angle and wear resistance that cannot meet the needs of high-end application products, and achieve Excellent wear resistance, simple process, excellent anti-fingerprint effect

Inactive Publication Date: 2019-06-28
SHENZHEN E TOUCH TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a dendritic silane derivative modified by perfluoropolyether and its preparation method, aiming to solve the problem that the initial contact angle and wear resistance of the existing materials used as anti-fingerprint coatings on glass surfaces cannot meet high-end requirements. Questions about application product requirements

Method used

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  • Perfluoropolyether modified dentritic silane derivative, as well as preparation method and application thereof
  • Perfluoropolyether modified dentritic silane derivative, as well as preparation method and application thereof
  • Perfluoropolyether modified dentritic silane derivative, as well as preparation method and application thereof

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preparation example Construction

[0027] And, the embodiment of the present invention provides a method for preparing perfluoropolyether-modified dendritic silane derivatives, comprising the following steps:

[0028] S01. Prepare the perfluoropolyether-modified dendritic polymer intermediates shown in the following formula 3 and / or formula 4 respectively, wherein m and n are respectively selected from the integers of 1 to 40, and m+n=20~ 60, m / n=0.3~3; l is 0 or 1;

[0029]

[0030]

[0031] S02. Under nitrogen or oxygen protection, the dendrimer intermediate of the perfluoropolyether modification shown in formula 3 and / or formula 4 is mixed with 1,3-bis-(trifluorotoluene), trialkoxy Hydrogen silane mixed, add catalyst, react at 40-116 °C for 4-24h, prepare the compound shown in formula 1 and / or formula 2, wherein, the alkoxy group in the trialkoxy hydrosilane is selected from An alkoxy group having 1 to 5 carbon atoms.

[0032] The preparation method of the perfluoropolyether-modified dendritic silane...

Embodiment 5

[0063] Example 5,5'-((5-(bromomethyl)-1,3-phenylene)bis(oxyl))bis(methylene))bis(1,3-bis(allyl) The reaction conditions of oxy)benzene) and perfluoropolyether alcohol are: react at 40-110°C for 4-12h. If the reaction temperature is too low and the time is too short, the raw materials cannot be converted well, and if the reaction temperature is too high and the time is too long, more side reactions will occur, which will affect the product yield.

[0064] After the reaction, the reaction system was washed with water until the pH of the lower layer solution was 7, water-soluble impurities were removed, the lower layer solution was collected, and the rotary evaporation was performed to remove low boilers (using the boiling point of the product as a standard). Wash with an organic solvent to remove unreacted raw materials, collect the viscous material in the lower layer, and concentrate under reduced pressure to obtain the compound represented by formula 3 and / or formula 4 when l=...

Embodiment 1

[0075] A dendritic silane derivative modified by perfluoropolyether, the structural formula of the dendritic polymer modified by perfluoropolyether is shown in the following formula (named S-1):

[0076]

[0077] Wherein, m and n are respectively selected from integers of 1-40, and m+n=20-60, m / n=0.3-3; l is 0.

[0078] The preparation method of above-mentioned compound comprises the following steps:

[0079] S11. Synthesis of Perfluoropolyether Modified Dendrimer Intermediates

[0080] Add 202g of 5-bromomethyl-1,3-benzenediol, 250g of allyl bromide, 1000g of THF (tetrahydrofuran), and 20g of a phase transfer catalyst in a four-necked flask equipped with a thermometer, a stirring device, a condensing device, and a vacuum distillation device TBAB (tetrabutylammonium bromide), 250g of 40% sodium hydroxide aqueous solution, mixed and stirred, heated to 66°C for 4 hours, distilled off the solvent under reduced pressure, added 500g of water, stirred and washed for 30 minutes, al...

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Abstract

The invention provides a perfluoropolyether modified dentritic silane derivative. The perfluoropolyether modified dentritic polymer has a structural formula as shown in formulae 1 and 2, wherein m andn are respectively selected from integers of 1-40, and sum of m and n is 20-60, and m / n is 0.3-3; l is 0 or 1; and the terminal methoxyl connected with the silicon atom can be replaced by alkoxy having the number of carbon atoms being 2-5.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a perfluoropolyether-modified dendritic silane derivative and a preparation method and application thereof. Background technique [0002] Optical components such as optical lenses, spectacle lenses, prisms, mirrors, touch screens, and medical and sanitary appliances are easily contaminated by fingerprints, skin oils, sweat, cosmetics, etc. during use. Such stains are difficult to remove once attached, and the stained optical components tend to cause various problems. For example, dirt on the surface of spectacle lenses will obstruct the view and deteriorate the appearance; dirt on the surface of the display will reduce the visibility and adversely affect the operability of the display with a touch panel. In response to the above, the impact of such stains and stains is usually reduced by surface treatment of components, the most common of which is the coupl...

Claims

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Application Information

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IPC IPC(8): C08G65/337C08G65/336C09D5/16C09D171/00
Inventor 方福全周济苍南军义谢亮
Owner SHENZHEN E TOUCH TECH
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