Aqueous fluoric resin and its prepn and application

A water-based fluorine and resin technology, applied in the direction of coating, etc., can solve the problems of poor performance, expensive ether monomers, high cost, etc., and achieve good surface properties and weather resistance, good mechanical stability, and good chemical stability Effect

Inactive Publication Date: 2002-08-07
大连振邦氟涂料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In terms of water-based fluororesins at home and abroad, a variety of vinyl-containing ether monomers and fluoroolefins are generally used as comonomers. They are first made into macromolecules and then emulsion polymerized to prepare fluorine-containing emulsions. The price of ether monomers Expensive, high cost, and more complicated preparation process
Domestic fluororesins and their coatings are most

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0025] Example 1

[0026] Add 57.0g of deionized water and 0.5g of sodium lauryl sulfate, 2.5g of nonylphenol polyoxyethylene ether and 2.3g of styrylphenol polyoxyethylene ether into the mixing tank, mix and stir to obtain an aqueous emulsifier solution. For use; Dissolve 0.5g of potassium persulfate in 40g of water and divide into three equal parts for use; Dissolve 0.4g of sodium bicarbonate in 10g of water for use; Add 30g of chlorotrifluoroethylene and 70g to the pre-emulsification kettle Vinyl acetate and 2 / 3 emulsifier aqueous solution are mixed and stirred for pre-emulsification to obtain emulsified monomer, ready for use;

[0027] Add the remaining emulsifier aqueous solution and sodium bicarbonate aqueous solution into a 1L autoclave with stirring and heating device, degas and charge N 2After repeated air and degassing for three times, add 1 / 3 of the emulsified monomer to the reactor and start stirring and heating; when the temperature reaches 60°C, add a part of the ini...

Example Embodiment

[0028] Example 2

[0029] Add 64.0g water, 0.6g sodium lauryl sulfate, 2.7g nonylphenol polyoxyethylene ether and 2.5g styrylphenol polyoxyethylene ether into the mixing tank, mix and stir to obtain an emulsifier aqueous solution, ready for use ; Dissolve 0.6g potassium persulfate in 30g water, and divide into three parts (I) 5.8g, (II) 19.0g, (III) 5.6g, set aside; Dissolve 0.3g sodium bicarbonate in 50.0g water to get Aqueous sodium bicarbonate solution, ready for use; mix 25.0g of chlorotrifluoroethylene, 57.0g of vinyl acetate, 18.0g of butyl acrylate and 9 / 10 emulsifier aqueous solution in a pre-emulsification kettle and stir for 30 minutes to pre-emulsify to obtain emulsification Monomer, to be used.

[0030] Add the remaining emulsifier aqueous solution and sodium bicarbonate aqueous solution into the 1L pressure-resistant reactor, degas and fill with N 2 After repeated air and degassing for three times, add 7% of the emulsified monomer to the reactor, stir and raise the te...

Example Embodiment

[0031] Example 3

[0032] In a mixing tank, mix 56g of water, 0.6g of sodium lauryl sulfate, 2.6g of nonylphenol polyoxyethylene ether and 2.4g of styrenylphenol polyoxyethylene ether, stir evenly to prepare an emulsifier aqueous solution, and set aside; Dissolve 0.6g potassium persulfate in 30g water and divide into three parts, (I) 1 / 5 part, (II) 3 / 5 part, (III) 1 / 5 part, for use; Dissolve 0.3g sodium bicarbonate in 56g Water, spare; 25.0g chlorotrifluoroethylene, 56.0g vinyl acetate, 15.0g butyl acrylate, 4.0g acrylic acid and 5 / 6 emulsifier aqueous solution are pre-emulsified under mixing and stirring for 30 minutes to obtain emulsified monomer, ready for use .

[0033] Add the remaining emulsifier aqueous solution and sodium bicarbonate aqueous solution into the 1L pressure-resistant reactor, degas and fill with N 2 After the gas and degassing are repeated three times, add 1 / 10~1 / 20 of the emulsified monomer into the reactor, stir and raise the temperature; when the temperatu...

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PUM

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Abstract

The present invention relates to a water fluororesin, its preparation and applicaltion. It is a multicomponent copolymer containing trifluorochloroethylene (A) and aliphatic carboxylic vinyl ester (B), and its composition contans (by weight portion ratio) A:B: water: emulsifying agent: initiator=15-40:10-70:90-160:0.5-8.0:0.1-1.0. Said invented product possesses good chemical stability and mechanical stability, and can be extensively used in the fields of building industry, wooden ware and paper-making industry, etc.

Description

(1) Technical field: [0001] The invention relates to a fluorine-containing copolymer, especially a water-based fluororesin, a preparation method and an application thereof. (two) background technology: [0002] In terms of water-based fluororesins at home and abroad, a variety of vinyl-containing ether monomers and fluoroolefins are generally used as comonomers. They are first made into macromolecules and then emulsion polymerized to prepare fluorine-containing emulsions. The price of ether monomers Expensive, the cost is higher, and the preparation process is more complicated. Domestic fluororesins and their coatings are mostly oily. Our company's patent CN1322775A discloses a water-based fluororesin, which is obtained by emulsifying existing fluororesins after evaporating the solvent, but the process is complicated and the industrialization investment is large. At present, the performance of water-based fluororesin at home and abroad is still not good, and the requirement...

Claims

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Application Information

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IPC IPC(8): C08F2/22C08F14/18C08F214/24C09D127/12
Inventor 高达刘洪珠
Owner 大连振邦氟涂料股份有限公司
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