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Preparation method of fluorinated acrylate emulsion

A technology of fluorine-containing alkyl acrylic acid and acrylate, which is applied in the direction of coating, etc., can solve the problems of latex particle collision coagulation, polymer film water resistance decline, etc., and achieve narrow particle size distribution, excellent chemical resistance, and excellent storage stability sexual effect

Active Publication Date: 2014-06-18
RUYUAN YAO AUTONOMOUS COUNTY DONGYANGGUANG FORMED FOIL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, because the conventional emulsifier molecules used in emulsion polymerization are easily decomposed by the influence of the external environment, the latex particles collide and coagulate, and after the emulsion is formed into a film, the emulsifier molecules remaining in the polymer are easy to migrate in the polymer. Causes the water resistance of the polymer film to decrease

Method used

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  • Preparation method of fluorinated acrylate emulsion
  • Preparation method of fluorinated acrylate emulsion
  • Preparation method of fluorinated acrylate emulsion

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Deionized water 125.0g, sodium lauryl sulfate 1.0g, octylphenol polyoxyethylene ether 2.0g, 2-propenyl ether-3-hydroxypropane-1-sodium sulfonate 1.5g, potassium persulfate 0.5g After stirring and dissolving, slowly add a mixture of 58.0 g of methyl methacrylate and 58.0 g of butyl acrylate, and perform pre-emulsification with high-speed mechanical stirring for 45 minutes to obtain 246.0 g of pre-emulsion I;

[0041] After stirring and dissolving 53.0g of deionized water, 0.4g of sodium lauryl sulfate, 0.8g of octylphenol polyoxyethylene ether, and 0.25g of potassium persulfate, slowly add 40.0g of trifluoroethyl methacrylate and methacrylic acid The mixed solution of 7.5 g of hydroxyethyl ester was pre-emulsified with high-speed mechanical stirring for 30 minutes to obtain 93.7 g of pre-emulsion II.

[0042]While maintaining the nitrogen atmosphere of the reaction device, take 80.0 g of pre-emulsion I, stir at 200 rpm, turn on the condensed water, and heat up to 80°C. ...

Embodiment 2

[0045] Stir 340.0g of deionized water, 4.8g of sodium dodecylbenzenesulfonate, 4.8g of fatty alcohol polyoxyethylene ether, 6.4g of 2-acrylamide-2-methylpropanesulfonic acid sodium salt, and 2.25g of potassium persulfate After dissolving, slowly add a mixture of 170.0 g of ethyl methacrylate, 138.0 g of ethyl acrylate and 22.0 g of hexafluorobutyl acrylate, and perform pre-emulsification with high-speed mechanical stirring for 1 hour to obtain 666.25 g of pre-emulsion I.

[0046] After stirring and dissolving 70 g of deionized water, 0.68 g of sodium dodecylbenzenesulfonate, 1.36 g of fatty alcohol polyoxyethylene ether, and 1.0 g of potassium persulfate, slowly add 58.0 g of hexafluorobutyl acrylate and 19.2 g of methacrylonitrile g of the mixed solution was pre-emulsified with high-speed mechanical agitation for 45 minutes to obtain 149.24 g of pre-emulsion II.

[0047] In the nitrogen atmosphere of the reaction device, 225.0 g of the pre-emulsion I was taken, stirred at 250...

Embodiment 3

[0050] 165.0g of deionized water, 1.6g of disodium 1,2-dodecyl diether disulfonate, 2.0g of nonylphenol polyoxyethylene ether, 2.2g of alkylphenol allyl polyether sulfate, persulfuric acid After stirring and dissolving 1.35 g of sodium, slowly add a mixture of 70.0 g of butyl methacrylate, 90.0 g of hexadecyl acrylate and 10.0 g of trifluorooctyl acrylate, and pre-emulsify with high-speed mechanical stirring for 30 minutes to obtain 332.15 g of pre-emulsion I.

[0051] After stirring and dissolving 40.0g of deionized water, 0.7g of disodium 1,2-dodecyl diether disulfonate, 0.7g of nonylphenol polyoxyethylene ether, and 0.40g of sodium persulfate, slowly add tridecafluoroacrylate A mixture of 28.0 g of octyl ester, 8.5 g of N-methylolacrylamide and 3.0 g of methacrylic acid was pre-emulsified with high-speed mechanical stirring for 45 minutes to obtain 80.9 g of pre-emulsion II.

[0052] In the nitrogen atmosphere of the reaction device, 100.0 g of the pre-emulsion I was taken...

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Abstract

The invention relates to a preparation method of a fluorinated acrylate emulsion. A method of semi-continuous seed emulsion polymerization is used, so that a fluorine monomer is concentrated in a copolymer shell; meanwhile, a reactive emulsifier is used, so that emulsifier molecules are combined on the surface of emulsion particles via stable covalent bonds. Specific method comprises the following steps: firstly, preparing a nuclear emulsion, dropping a shell preemulsion on the basis of the shell preemulsion, and polymerizing through a semi-continuous seed method to obtain an aqueous fluorinated acrylate shell emulsion. Due to the preparation technique, a fluorine-containing monomer is placed in the shell, so that the efficiency is maximized, advantages of a fluorine-containing polymer is shown as much as possible; the emulsion obtained through the method has excellent storage stability, calcium ion stability, freeze-thaw stability and mechanical stability.

Description

technical field [0001] The invention relates to the field of paint emulsion and production technology, in particular to a preparation method of fluorine-containing acrylate emulsion. Background technique [0002] Water-based (meth)acrylate series coatings have the advantages of good film-forming properties, good workability, alkali resistance and color retention of the coating film, and no pollution, and have been widely used. However, the (meth)acrylic resin emulsion has poor high temperature resistance, and the most obvious disadvantage in the application of architectural coatings is high temperature sticking back, resulting in decreased stain resistance, poor water resistance and weather resistance, so its application range is limited. In order to obtain coatings with excellent performance, people graft a certain amount of fluorine-containing monomers into acrylic resins for modification, which can not only maintain the original advantages of acrylate copolymers, but also...

Claims

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Application Information

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IPC IPC(8): C08F220/14C08F220/18C08F220/22C08F220/28C08F220/44C08F220/06C08F220/24C08F220/58C08F2/26C08F2/30C09D133/12C09D133/08C09D133/10
Inventor 李义涛郑炳发汤诚杨策宇王寅飞邹智杰游孟梦
Owner RUYUAN YAO AUTONOMOUS COUNTY DONGYANGGUANG FORMED FOIL CO LTD
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