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Method for synthesizing novel perfluoropolyether alkoxysilane applied to anti-fingerprint paint

A technology of alkoxysilane and perfluoropolyether allylamide, which is applied in the field of synthesis of perfluoropolyether alkoxysilane

Inactive Publication Date: 2014-03-26
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Currently, surface coatings are used in a wide range of applications such as handheld electronic devices and displays, but obtaining a dirt-resistant surface with long-term durable properties is the challenge

Method used

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  • Method for synthesizing novel perfluoropolyether alkoxysilane applied to anti-fingerprint paint
  • Method for synthesizing novel perfluoropolyether alkoxysilane applied to anti-fingerprint paint
  • Method for synthesizing novel perfluoropolyether alkoxysilane applied to anti-fingerprint paint

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Experimental program
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Effect test

Embodiment 1

[0030] Embodiment one: a kind of through Allylamine reacts with trimethoxysilane to obtain a new method for preparing an alkoxysilane of perfluoropolyether used in anti-fingerprint coatings, comprising the following steps:

[0031] (1) In a 50mL round bottom flask, add 5.81g (5mmol) 285mg (5mmol) allylamine, 20mL diethyl ether, stirred overnight at room temperature. Filtrate, distill off the solvent under reduced pressure, and separate with a 200-300 mesh silica gel column (eluent: 6:1 heptane / ethyl acetate). After removing the solvent, the corresponding product was obtained with a yield of 33%.

[0032] (2) In a 100mL reactor, add 1.179g (1mmol) of the above-mentioned step product, 122mg (1mmol) trimethoxysilane, 200mg (5mol%) chloroplatinic acid, 50mL dichloroethane, seal, nitrogen protection, and react The kettle was placed in an oil bath, the temperature was raised to 60°C, and the reaction was stirred for 48 hours. After the reaction was completed, the reactor was ra...

Embodiment 2

[0034] Embodiment two: a kind of through Allylamine reacts with trimethoxysilane to obtain a new method for the alkoxysilane of a novel perfluoropolyether used in anti-fingerprint coatings, including the following process steps:

[0035] (1) In a 50mL round bottom flask, add 6.64g (5mmol) 285mg (5mmol) allylamine, 20mL diethyl ether, stirred overnight at room temperature. Filtrate, distill off the solvent under reduced pressure, and separate with a 200-300 mesh silica gel column (eluent: 6:1 heptane / ethyl acetate). After removing the solvent, the corresponding product was obtained with a yield of 31%.

[0036] (2) In a 100mL reactor, add 1.345g (1mmol) of the above-mentioned step product, 122mg (1mmol) trimethoxysilane, 200mg (5mol%) chloroplatinic acid, 50mL dichloroethane, seal, nitrogen protection, and react The kettle was placed in an oil bath, the temperature was raised to 60°C, and the reaction was stirred for 48 hours. After the reaction was completed, the reactor ...

Embodiment 3

[0038] Embodiment three: a kind of through Allylamine reacts with trimethoxysilane to obtain a new method for the alkoxysilane of a novel perfluoropolyether used in anti-fingerprint coatings, including the following process steps:

[0039] (1) In a 50mL round bottom flask, add 7.47g (5mmol) 285mg (5mmol) allylamine, 20mL diethyl ether, stirred overnight at room temperature. Filtrate, distill off the solvent under reduced pressure, and separate with a 200-300 mesh silica gel column (eluent: heptane / ethyl acetate 6:1). After removing the solvent, the corresponding product was obtained with a yield of 30%.

[0040] (2) In a 100mL reactor, add 1.179g (1mmol) of the above-mentioned step product, 122mg (1mmol) trimethoxysilane, 200mg (5mol%) chloroplatinic acid, 50mL dichloroethane, seal, nitrogen protection, and react The kettle was placed in an oil bath, the temperature was raised to 60°C, and the reaction was stirred for 48 hours. After the reaction was completed, the reacto...

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Abstract

The invention aims to provide a method for synthesizing novel perfluoropolyether alkoxysilane applied to anti-fingerprint paint through reaction of perfluoroalkyl ether acyl fluoride, allyl amine and trimethoxy silane. The method is characterized by comprising the following steps: (1) adding perfluoroalkyl ether acyl fluoride and allyl amine into a reaction vessel at the molar ratio of 1 to (1-1.1), adding a certain amount of solvent and alkali into the reaction vessel, and performing stirring overnight at a room temperature; performing filtration, performing distillation under reduced pressure to remove the solvent, and performing silica gel column separation, wherein an eluting agent is composed of heptane and ethyl acetate at the ratio of 6 to 1, and a product is obtained after the solvent is removed; (2) a certain amount of product obtained in the step (1) and a catalyst are added into a reaction kettle, sealing the reaction kettle, performing nitrogen protection, placing the reaction kettle in oil bath, heating the reaction kettle to specified temperature, and performing stirring for reaction for 48 hours; quickly cooling the reaction kettle to room temperature after the reaction is finished; performing distillation under reduced pressure on the product of the reaction to remove solvent, and then performing separation and purification through silica gel columns to obtain the product (namely the novel perfluoropolyether alkoxysilane). The product prepared by the invention is applied to anti-fingerprint paint, has the characteristics of fingerprint reduction, easiness in cleaning, wear resistance and the like, and is suitable for lots of base materials, such as glass, plastic, metal and films.

Description

technical field [0001] The invention relates to a method for synthesizing a new type of perfluoropolyether alkoxysilane used in anti-fingerprint coatings through the reaction of perfluoroalkyl ether acyl fluoride, allylamine and trimethoxysilane, which belongs to the chemical industry material field. Background technique [0002] The frequently touched surfaces of buildings and touch instruments are often easily contaminated by fingerprints, skin oils, sweat and cosmetics. Once the surface is contaminated, the dirt is not easy to remove, or requires special cleaning materials to remove. Currently, surface coatings are used in a wide range of applications such as handheld electronic devices and displays, but obtaining a dirt-resistant surface with long-term durable properties is the challenge. Fluorinated materials have unique properties such as chemical stability, temperature resistance, low coefficient of friction, and low surface tension. Perfluoroether anti-fingerprint...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F7/18C09D7/12
Inventor 郑昌戈严津津杜有志
Owner JIANGNAN UNIV
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