Random copolymerization fluorine-containing macromole emulsifying agent and preparation thereof

Abstract

The invention discloses a fluorine-containing macro-molecule emulsifying agent which is a comb-type random copolymer which consists of hydrophobic fluorine-containing monomers and hydrophilicity monomers; in the invention, conventional radical polymerization is adopted for obtaining the fluorine-containing macro-molecule emulsifying agent, the requirements of reaction conditions and devices are low and the reaction monomers are easily obtained, thus overcoming the disadvantages that methods such as active polymerization, and the like, are carried out under highly-demanding conditions in the prior art, and the cost is high. The reaction of the invention has rapid speed, and the conversion percent is high; at present, the conventional radical polymerization with low cost is still one of the simplest and most convenient methods in the point of industrialized production and production cost reduction, therefore, the fluorine-containing macro-molecule emulsifying agent is easy for industrial application.

Description

technical field [0001] The invention relates to a fluorine-containing macromolecular emulsifier, in particular to a comb-shaped random copolymer composed of hydrophobic fluorine-containing monomers and hydrophilic monomers, which can be used as a fluorine-containing macromolecular emulsifier. Background technique [0002] A macromolecular emulsifier is an amphiphilic polymer. Amphiphilic polymers are defined as: polymers with hydrophobic and hydrophilic segments or groups, the hydrophilic segments or groups may be ionic or non-ionic. For amphiphilic polymers, water is a good solvent for hydrophilic segments or groups, and a precipitant for hydrophobic segments. The hydrophobic parts self-assemble to reduce their exposure to water, forming micelles or bilayer structures; while the hydrophilic parts protrude toward the water. The advantage of macromolecular emulsifiers is that, as a high molecular weight component, they have a lower critical micelle concentration than small ...

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Problems solved by technology

[0005] (1) Busse k. et al. have synthesized tert-butyl methacrylate and methacrylate-2-(N-methyl perfluorobutylsulfonamido) ethyl ester [poly(t-BMA -b-FMA)] amphiphilic copolymer (referring to: Busse k.; Kressler J.Macromolecules, 2002,35,178), however, living anionic polymerization reaction conditions are harsh, reaction temperature is very low, it is difficult to realize industrialization control and produce;

[0006] (2) Another type of synthesis method is the use of atom transfer radical polymerization (ATRP). (see: Li.H.; Wu.P.P.; Han.Z.W.; Polymer, 2002, 43, 4079); ATRP method has unique advantages, however, its disadvantage is that the final product contains catalyst, which is difficult to remove, The product is not pure

[0011] Although the above-mentioned oxyanionic polymerization method is much milder than the reaction conditions of anionic polymerization, it can be used to prepare block copolymers with delicate structures, but for industrial production, the above-mentioned reaction conditions are still relatively strict. Therefore, it is necessary to find a more suitable The method for industrial production of fluorine-containing macromolecular emulsifiers makes it less demanding on polymerization reaction conditions and equipment

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