Method for synthesizing fluorine-containing anti-fingerprint agent

Abstract

The invention relates to a method for preparing a fluorine-containing anti-fingerprint agent. The method comprises the following steps of by adopting perfluoroalkyl ethyl methacrylate, 3-(methacryloxy)propyl trimethoxysilane and methyl methacrylate as reaction substrates, dodecyl mercaptan as a chain transfer agent and diisopropyl peroxydicarbonate as an initiator and in the presence of a solvent, initiating polymerization reaction for a reaction time of 1-2 hours, controlling the reaction temperature at 30-40 DEG C to prepare a crude product; carrying out reduced pressure distillation to remove the solvent to obtain a perfluoroalkyl silane compound; and diluting the perfluoroalkyl silane compound into a 0.1% (by mass concentration) solution with hydrofluoroether to obtain the finished product, namely, fluorine-containing anti-fingerprint agent. The method has the advantages of mild reaction conditions, no need of precious metal catalyst, safe and easily available raw materials, simple process, good safety and low production costs and is conducive to industrial production.

Description

technical field [0001] The invention belongs to the field of fluorine-containing surface protection materials, in particular to a synthesis method of a fluorine-containing anti-fingerprint agent. technical background [0002] The fluorine-containing anti-fingerprint agent with fluorinated silane compounds as the main component has been widely used on the surface of high-end glass products such as high-end mobile phone screens, digital camera lenses, and precision optical components. It has excellent waterproof, oil-proof and anti-fouling effects. "Three defenses" effect. There are two main types of fluorine-containing anti-fingerprint agents currently on the market, including perfluoropolyether silanes and perfluoroalkyl silanes. [0003] Among them, perfluoropolyether silane fluorine-containing anti-fingerprint agents are mainly synthesized by addition reaction of perfluoropolyether and silane compounds. Its disadvantages are: 1. The cost of raw materials is high and diff...

AI Technical Summary

Problems solved by technology

Its disadvantages are: 1. The cost of raw materials is high and difficult to obtain—perfluoropolyether as a raw material needs to be prepared by hexafluoropropylene oxide, which has poor production safety and harsh process conditions; 2. The preparation process is cumbersome and the yield is low, increasing Production cost; 3: The reaction conditions are harsh, noble metal catalysts are required, and the reaction time is too long

Its shortcoming is: 1. the noble metal catalyst chloroplatinic acid that uses is expensive, has increased production cost; 2. the raw material trichlorosilane that uses has irritating and corrosive substance, has strict requirements on process pipeline, has increased process cost and Danger; 3. The reaction conditions are harsh and need to be carried out under high temperature and high pressure