Silane modified fluorine-containing polymer as well as preparation method and fingerprint-proof paint thereof

A silane modification and polymer technology, applied in polyether coatings, coatings, etc., can solve the problems of anti-fingerprint effect and durability, and achieve excellent anti-fingerprint effect, easy to clean, and difficult to absorb water and oil.

Active Publication Date: 2017-06-23
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the antifouling composition disclosed in this patent application is a cured crosslinked fluorine-containing coating, but it only has a certain antifouling effect. Patent application CN101171274A discloses fluorosilicone and a surface containing fluorine and silicon Treatment agent, however, the surface treatment agent disclosed in this patent application is applied to textile fibers, and also has hydrophobic and oleophobic properties
The above-mentioned existing patented technology has a certain effect on the anti-fouling performance, but it cannot achieve the ideal anti-fingerprint effect and durability when applied to the glass screen of a mobile phone

Method used

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  • Silane modified fluorine-containing polymer as well as preparation method and fingerprint-proof paint thereof
  • Silane modified fluorine-containing polymer as well as preparation method and fingerprint-proof paint thereof
  • Silane modified fluorine-containing polymer as well as preparation method and fingerprint-proof paint thereof

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preparation example Construction

[0024] In a second aspect, the present invention provides a method for preparing a silane-modified fluoropolymer, the method comprising:

[0025] (1) In the presence of a fluorine-containing catalyst and an organic solvent, polymerize hexafluoropropylene oxide and / or tetrafluoroethylene oxide to obtain an intermediate represented by formula (II);

[0026] (2) Under an inert atmosphere, the intermediate shown in formula (II) is contacted with the aminosilane coupling agent shown in formula (III),

[0027]

[0028]

[0029] R in formula (II) is -CF 3 Or-F, the value of n makes the number-average molecular weight of fluoropolymer be 500-10000, R in the formula (Ⅲ) 1 for C 1 -C 16 Alkylene or phenylene, R 2 , R 3 , R 4 each independently as C 1 -C 16 Alkyl or -H.

[0030] According to the method of the present invention, preferably, the value of n in the formula (II) makes the number average molecular weight of the fluoropolymer be 4000-6500, R in the formula (III) ...

preparation example 1

[0057] This preparation example is used to illustrate the silane-modified fluoropolymer of the present invention and its preparation method.

[0058] (1) Take 1 g of dry cesium fluoride solid with an electronic balance and dissolve it in 6 g of ethylene glycol dimethyl ether to prepare a liquid catalyst and move it to a constant pressure dropping funnel;

[0059] (2) Add the above-mentioned liquid catalyst into a completely dry 250mL three-necked flask, then stir the liquid catalyst, and set the stirring speed to 600r / min. Inject dry hexafluoropropylene oxide gas, stop feeding after introducing 200g of hexafluoropropylene oxide gas, then seal the three-neck flask and adjust the rotation speed to 300r / min, and continue the reaction for 15h. After the reaction was completed, the temperature was slowly raised to 5°C, and the reaction product was evacuated for 2 hours at the same time to obtain a white viscous liquid product;

[0060] (3) Under nitrogen protection and room temper...

Embodiment 1

[0064] This example is used to illustrate the anti-fingerprint coating of the present invention and its preparation method.

[0065] At room temperature, add 0.05 g of aluminum acetylacetonate and 0.3 g of the product A1 prepared in Preparation Example 1 to 100 g of perfluorinated solvent SV-70, and then stir at a stirring speed of 200 r / min for 30 min to obtain an anti-fingerprint Paint B1.

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PUM

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Abstract

The invention relates to the field of fingerprint-proof paint, and discloses a silane modified fluorine-containing polymer. The structural formula of the fluorine-containing polymer is shown in formula (I), wherein, R is -CF3 or -F, R1 is alkylidene or phenylene of C1-C16, R2, R3 and R4 are independently alkyl of C1-C16 or -H, and value of n allows number-average molecular weight of the fluorine-containing polymer to be 500-10000. The invention also discloses a preparation method of the silane modified fluorine-containing polymer, and the silane modified fluorine-containing polymer prepared by the method. The invention also discloses fingerprint-proof paint, and the fingerprint-proof paint contains the silane modified fluorine-containing polymer.

Description

technical field [0001] The invention relates to the field of anti-fingerprint coatings, in particular to a silane-modified fluoropolymer, a method for preparing the silane-modified fluoropolymer and the silane-modified fluoropolymer prepared by the method, and An anti-fingerprint coating containing the silane-modified fluoropolymer. Background technique [0002] It is understood that anti-fingerprint treatment has become a recognized surface treatment process. At present, the anti-fingerprint treatment process used by various mobile phone screen manufacturers is vacuum evaporation (PVD). The advantages of this process are excellent anti-fingerprint effect and good durability. size product. [0003] In addition, some documents have reported that antifouling compositions can be used for antifouling treatment. For example, patent application CN1498252A discloses an antifouling composition, which contains cured or crosslinked polymers without perfluoropolyether moieties and F...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G65/336C09D171/00
CPCC08G65/336C08G2650/04C09D171/00
Inventor 冷世伟胡文李海滨
Owner BYD CO LTD
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