Method for preparing fluorine-containing acrylate emulsion

The technology of acrylate and perfluoroalkyl ethyl acrylate is applied in the field of preparation of fluorine-containing acrylate emulsion, can solve the problems of inability to form film, high glass transition temperature, application limitation in the field of coatings, etc., and achieves improved weather resistance, The effect of excellent performance and easy control of the reaction process

Active Publication Date: 2011-09-07
JINZHOU DPF TH CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Currently on the market, polytetrafluoroethylene emulsion PTFE and polyvinylidene fluoride emulsion PVDF cannot be formed into a film at room temperature due to their high glass transition temperature, and require high temperature sintering, so their application in the coating field is limited.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] 1. Preparation of pre-emulsion I: Mix 54g of distilled water, 1.4g of sodium lauryl sulfate, and 4.0g of TX-10 octylphenol polyoxyethylene ether, and slowly add 36.4g of methyl methacrylate and butyl acrylate 28.6g and 0.9g of methacrylic acid, emulsified with an emulsifier for 20min to obtain 125.3g of pre-emulsion I.

[0026] Preparation of pre-emulsion II: Mix 54g of distilled water, 1.4g of sodium lauryl sulfate, and 3.0g of TX-10 octylphenol polyoxyethylene ether, and slowly add 31.7g of methyl methacrylate and butyl acrylate that have been stirred evenly 18.5 g, 0.6 g of methacrylic acid, 0.15 g of N-methylolacrylamide, and 15 g of perfluorohexylethyl acrylate were emulsified with an emulsifier for 15 minutes to obtain 124.35 g of pre-emulsion II.

[0027] 2. Preparation of seed emulsion: Take 48.7g of distilled water, 0.6g of sodium lauryl sulfate, 1.5g of TX-10 octylphenol polyoxyethylene ether, 1.5g of sodium carbonate, and 25.8g of pre-emulsion I in a four-n...

Embodiment 2

[0032] 1. Preparation of pre-emulsion I: Mix 60g of distilled water, 1.2g of sodium lauryl sulfate, and 2.4g of NP-10 nonylphenol polyoxyethylene ether, and slowly add 38.4g of methyl methacrylate and butyl acrylate that have been stirred evenly 28.6 g, 0.9 g of acrylic acid, and 4 g of stearyl acrylate were emulsified with an emulsifier for 5 minutes to obtain 135.5 g of pre-emulsion I.

[0033] Preparation of pre-emulsion II: Mix 54 g of distilled water, 1.2 g of sodium lauryl sulfate, 0.5 g of sodium perfluorononylphenol benzene sulfonate, and 2.2 g of NP-10 fatty alcohol polyoxyethylene ether, and slowly add the 33.7 g of methyl methacrylate, 22.5 g of butyl acrylate, 0.7 g of acrylic acid, 2 g of octadecyl acrylate, and 31 perfluorohexylethyl acrylate were emulsified with an emulsifier for 25 minutes to obtain 148.25 g of pre-emulsion II.

[0034] 2. Preparation of seed emulsion: Take 60.0g of distilled water, 0.6g of sodium lauryl sulfate, 1.2g of NP-10 nonylphenol pol...

Embodiment 3

[0039]1. Preparation of pre-emulsion I: Mix 60g of distilled water, 1.2g of sodium lauryl sulfate, and 2.4g of NP-10 nonylphenol polyoxyethylene ether, and slowly add 38.4g of methyl methacrylate and butyl acrylate that have been stirred evenly 28.6 g, 0.9 g of acrylic acid, and 15 g of perfluorononylethyl acrylate were emulsified with an emulsifier for 10 minutes to obtain 146.5 g of a pre-emulsion.

[0040] Preparation of pre-emulsion II: Mix 64g of distilled water, 1.2g of sodium lauryl sulfate, 0.5g of potassium perfluorobutane sulfonate, and 2.4g of NP-10 nonylphenol polyoxyethylene ether, and slowly add the well-stirred formazan 33.7g of methyl acrylate, 22.5g of butyl acrylate, 0.7g of acrylic acid, 6g of octadecyl acrylate, 16g of perfluorohexylethyl acrylate, and 15g of perfluorononylethyl acrylate, emulsified with an emulsifier for 5min to obtain Pre-emulsion 147.25g.

[0041] 2. Preparation of seed emulsion: Take 60.0g of distilled water, 0.6g of sodium lauryl su...

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PUM

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Abstract

The invention discloses a method for preparing fluorine-containing acrylate emulsion. The fluorine-containing acrylate emulsion is prepared from perfluoroalkyl ethyl acrylate and acrylic monomers which are used as main materials, persulfate which is used as the initiator, and a compound emulsifier by adopting the semi-continuous titration polymerization process. The titration mode is adopted in the whole reaction process, the heat is preserved after finishing titrating, the reaction process is convenient to control, and the finally prepared fluorine-containing acrylate emulsion has excellent performance and high performance-price ratio, is environmental friendly and safe and can be cured at normal temperature to form a film. The detection on the emulsion paint prepared from the fluorine-containing acrylate emulsion shows that the emulsion paint can resist scrubbing of 10,000 times without changing, can resist both acid and base for 120 hours without blistering and powder falling in addition to slight loss of gloss and color and can resist ageing for 5,000 hours without blistering, stripping and cracking. The content of solid (the mass percent of non-volatile matters) in the fluorine-containing acrylate emulsion is more than 45%, and the water repellent angle of the coating of the fluorine-containing acrylate emulsion is more than 100 degrees.

Description

technical field [0001] The invention relates to a method for preparing an emulsion, in particular to a method for preparing a fluorine-containing acrylate emulsion. Background technique [0002] Pure acrylic emulsion and silicon acrylic emulsion occupy an important position in the field of emulsion production. The existing pure acrylic emulsion and silicon acrylic emulsion cannot meet the requirements in terms of chemical corrosion resistance and self-cleaning. The fluorine-containing acrylate emulsion is relatively stable due to the large bond energy of the C-F bond, and the F atom is firmly bonded to the C atom, and the outer layer of the carbon chain skeleton is arranged very tightly, which effectively prevents the exposure of the C atom and the C chain. It can better reflect excellent water repellency, acid and alkali resistance, self-cleaning and weather resistance. Waterborne fluorine-containing coatings prepared from fluorine-containing acrylic emulsions have the cha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/14C08F220/18C08F220/06C08F220/58C08F220/24C08F230/08C08F2/30C08F2/26C09D133/12C09D5/02
Inventor 魏宣孙百开魏潇
Owner JINZHOU DPF TH CHEM CO LTD
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