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Hybrid polyurethane-polyacrylacid ester dispersion containing fluorine and/or siloxane and preparation method thereof

A technology of polyurethane dispersion and polyacrylate, which is applied in the direction of coating, etc., can solve the problems of not being able to provide waterproof and antifouling performance, and achieve the effect of excellent antifouling performance, good application prospects, and simple preparation process

Inactive Publication Date: 2009-02-11
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

[0004] Although the latex particles obtained by these methods have certain improvements in water resistance and solvent resistance, due to the defects in their structure and preparation process, the hydrophilic polyurethane components in the latex particles are mainly distributed on the surface, while the fluorine-containing components Most of them are wrapped in latex particles, so they can't provide enough waterproof and antifouling performance

Method used

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  • Hybrid polyurethane-polyacrylacid ester dispersion containing fluorine and/or siloxane and preparation method thereof
  • Hybrid polyurethane-polyacrylacid ester dispersion containing fluorine and/or siloxane and preparation method thereof
  • Hybrid polyurethane-polyacrylacid ester dispersion containing fluorine and/or siloxane and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0079] Press the raw material consumption specified in table 1, with 80.48 gram PTMG (Mw=1000), 48.23 gram IPDI, 5.00 gram DMPA, 9.05 gram HPMA, 1.03 gram BDO and 4.00 gram IPDA, 2.74 gram TEA and 0.08 gram DBTDL in nitrogen protection and Under the condition of maintaining mechanical stirring, the reaction was carried out at 68° C. for 6 hours. At the same time, 75 grams of acetone was added during the reaction. After the reaction, the temperature was lowered to 30-40° C., and then 2.74 g of triethylamine was added. The solution was dispersed into 200.00 grams of deionized water with vigorous stirring. The acetone was distilled off under reduced pressure and cooled to room temperature to obtain a double bond-containing polyurethane dispersion.

[0080] 85.00 g of FMA-1, 13.10 g of FMA-4 (perfluoroalkylethyl acrylate), 129.00 g of MMA, 60.0 g of BA, 20 g of LA, 6 g of MAA, and 0.50 g of NDM were mixed with 5.00 g of SDS, 7.50 g of 0- 9 and 7.50 grams of 0-10 were mixed with...

Embodiment 2-8

[0082] Examples 2-8 According to the amount of raw materials specified in Table 1, the same preparation method as in Example 1 was used to prepare the products respectively.

Embodiment 9

[0084] The obtained dispersion was coated on a glass substrate or a tin plate, dried at room temperature for 30 minutes, and then treated in an oven at 60° C. for 2 hours, and the obtained film thickness was about 10 μm. The contact angle and surface energy tests of the coating film were carried out on glass substrates, and the tests of other physical properties of the coating film were carried out on tinplate plates. The results are shown in Table 2.

[0085] The raw material consumption (g) in the different examples of table 1

[0086]

[0087]

[0088] Table 2 Coating properties

[0089]

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Abstract

The invention provides a hybrid polyurethane-polyacrylate dispersoid containing fluorine and siloxane and a preparation method thereof, wherein, an interpenetrating network structure and a nuclear shell structure exist in a dispersoid particle simultaneously. The hybrid polyurethane-polyacrylate dispersoid is polymerizing a polyurethane dispersoid containing double bonds (10-20 percent), a fluorine-containing monomer (5-15 percent), a fluorine-free monomer (10-30 percent), an initiating agent (0.1-2.0 percent), an emulsifying agent (0.5-5 percent), a chain transfer agent (0.01-0.5 percent) and deionized water (50-70 percent) by emulsion. The dispersoid is white lacteal liquid, contains no organic solvent, and has a solid content of 30-50 percent, a molecular weight of 10,000-100,000, a pH value of 7-9, a viscosity of 30-300cp and a stationary phase of more than 1 year. Paint films prepared by the dispersoid have good physical property and relatively low surface energy and can be applied to providing surface coatings with excellent water-proof / antifouling performance.

Description

technical field [0001] The invention relates to a water-based polyurethane dispersion containing fluorine and / or siloxane and a preparation method thereof. The coating film prepared from the dispersion has excellent physical properties and low surface energy, and can be used to provide excellent waterproof / Surface coating with antifouling properties. Background technique [0002] Due to its excellent overall comprehensive properties, such as abrasion resistance, flexibility, environmental protection, low toxicity, etc., waterborne polyurethane dispersions are attracting more and more attention from the industry and are widely used. However, water-based polyurethane still needs to be improved in terms of weather resistance and water resistance. Among them, the hybrid polymerization of water-based polyurethane and polyacrylate is a more commonly used method. In order to further improve the water resistance and organic solvent resistance of aqueous polyurethane dispersions, a...

Claims

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Application Information

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IPC IPC(8): C08F283/00C08F220/22C08G18/83C08G18/67C08G18/61C08G18/38C09D151/08
Inventor 任东文张祖文殷宪霞由继业王巧玲蔡玉波
Owner 大连振邦氟涂料股份有限公司
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