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Perfluoropolyether silane dendritic compound as well as preparation method thereof and film containing dendritic compound

A perfluoropolyether silane and dendritic technology, applied in polyether coatings, biocide-containing paints, coatings, etc., can solve problems such as poor adhesion and peeling, and achieve pollution prevention, firm attachment, and strong adhesion Focus on the effect

Pending Publication Date: 2018-07-03
CHONGQING XINJING SPECIAL GLASS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is that the adhesion between the existing perfluoropolyether film and glass is generally poor, and it is easy to peel off from the glass surface. A kind of perfluoropolyether silane dendritic compound and its preparation method are provided And the film comprising it, by coating the surface treatment composition that contains the perfluoropolyether silane dendrimers to obtain a film surface will form a layer of silane dendrimers, thereby obtaining a film with good adhesion on the glass panel

Method used

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  • Perfluoropolyether silane dendritic compound as well as preparation method thereof and film containing dendritic compound
  • Perfluoropolyether silane dendritic compound as well as preparation method thereof and film containing dendritic compound
  • Perfluoropolyether silane dendritic compound as well as preparation method thereof and film containing dendritic compound

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] This embodiment provides a perfluoropolyether silane dendritic compound, the chemical formula of the perfluoropolyether silane dendritic compound is:

[0041] The subscripts m and n in the formula are each independently a natural number 1, 2 or 3, wherein,

[0042] PFPE stands for perfluoropolyether group;

[0043] R is a bridging group;

[0044] X is a hydrolyzable group.

[0045] Apparently, the perfluoropolyether silane dendrimers contain perfluoropolyether groups (PFPE) and thus have good hydrophobicity and oleophobicity, and at the same time, the silane dendrimers group The silicon-oxygen-silicon chemical bond can be directly formed with the glass so as to stably improve the direct binding force between the perfluoropolyether silane dendritic compound and the glass. Therefore, the perfluoropolyether silane dendritic compound can be used to form a film that can not only prevent the surface of the glass panel from being polluted by external dirt and user's fin...

Embodiment 2

[0054] This embodiment provides a perfluoropolyether silane dendritic compound, the chemical formula of the perfluoropolyether silane dendritic compound is:

[0055] The subscripts p and n in the formula are each independently a natural number 1, 2 or 3, wherein,

[0056] PFPE stands for perfluoropolyether group;

[0057] R is a bridging group;

[0058] X is a hydrolyzable group.

[0059]In this embodiment, the perfluoropolyether group is a perfluorinated group (that is, substantially all C-H bonds are replaced by C-F bonds), which may include straight chain, branched chain and / or cyclic structures, and may be saturated or unsaturated. Specific examples of the perfluoropolyether group are disclosed in Chinese patent CN200780030231.5, so details will not be repeated here.

[0060] The hydrolyzable groups are usually chlorine groups, alkoxy groups, acyloxy groups, etc., and when these groups are hydrolyzed, silanol (Si(OH) 3 ), and combine with inorganic substances to for...

Embodiment 3

[0067] This embodiment provides a method for preparing the perfluoropolyether silane dendrimers described in Embodiment 1, the preparation method includes chemical reaction I:

[0068]

[0069] In the formula,

[0070] PFPE stands for perfluoropolyether group;

[0071] R is a bridging group;

[0072] X is a hydrolyzable group;

[0073] The subscripts m and n are each independently a natural number 1, 2 or 3.

[0074] In this example, trifluoromethanesulfonic acid was added as a catalyst during the chemical reaction I to accelerate the reaction process. The principle of the chemical reaction I is: the hydroxyl group (-OH) in the reactant HO-PFPE-OH is in trifluoromethanesulfonic acid (CF 3 SO 3 Under the catalytic action of H), the reactant is attacked epoxy bond in . Preferably, the chemical reaction I is carried out under nitrogen protection at a temperature of 60-120°C.

[0075] In this embodiment, the perfluoropolyether group is a perfluorinated group (that is, ...

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Abstract

The invention discloses a perfluoropolyether silane dendritic compound which has a chemical formula as shown in the description, wherein Y is as shown in the description or CpF2p+1<->, PFPE representsa perfluoropolyether group, R is a bridging group, X is a hydrolyzable group, and the subscripts n, m and p in the formula are natural numbers of being greater than or equal to 1. The compound has excellent hydrophobic and oleophobic characteristics of the perfluoropolyether and also has the characteristic of high adhesive force of the silane dendritic compound on a glass panel. Therefore, a filmobtained by coating a surface treatment composition containing the perfluoropolyether silane dendritic compound can prevent the surface of the glass panel from being contaminated by external pollutants and user's fingerprints and can also be firmly attached onto the glass panel. Compared with the existing perfluoropolyether film, the film obtained by coating a surface treatment composition containing the perfluoropolyether silane dendritic compound is difficultly stripped from the surface of the glass panel and has longer service life.

Description

technical field [0001] The invention relates to the field of thin films, in particular to a fluorosilicon material, and more specifically to a perfluoropolyether silane dendritic compound, a preparation method thereof, and a thin film containing the same. Background technique [0002] In capacitive touch products (mobile phones, tablet computers), the surface of the glass panel is easily polluted by external dirt and user's fingerprints. Therefore, how to keep the glass surface clean for a long time and how to remove fingerprints and dirt adhered to the surface more and more are more and more concerned by people. [0003] Perfluoropolyether anti-fingerprint film is a film with both hydrophobic and oleophobic properties. Based on good hydrophobicity and oleophobicity, perfluoropolyether film is not easy to adhere to dust and dirt from the outside, and the adhesion In the case of dirt and fingerprints, it also has the characteristics of easy removal of foreign matter on the s...

Claims

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Application Information

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IPC IPC(8): C08F14/26C08F14/28C08F8/42C08G65/28C09D127/18C09D127/20C09D171/00C09D5/16
CPCC09D127/18C09D127/20C09D171/00C08F8/42C08G65/2639C08G65/2684C09D5/1662C08F14/26C08F14/28
Inventor 胡伟韩鹏陈振宇索平平刘旭明常瑞荆吴桐
Owner CHONGQING XINJING SPECIAL GLASS CO LTD
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