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Fluorocoating resin and preparation method thereof

A technology of fluorine-containing coatings and resins, applied in the direction of polyester coatings, epoxy resin coatings, polyurea/polyurethane coatings, etc., can solve the problems of increased resin costs, achieve cost reduction, less fluorine-containing monomers, and compatibility good sex effect

Active Publication Date: 2011-05-04
溧阳常大技术转移中心有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the amount of fluorine-containing monomers greatly increases the cost of the resin

Method used

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  • Fluorocoating resin and preparation method thereof
  • Fluorocoating resin and preparation method thereof
  • Fluorocoating resin and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Example 1: (Molecular weight 5000, block mass ratio of 1:1 butyl acrylate and hexafluorobutyl methacrylate block copolymer)

[0033] In a 100ml four-necked flask, add 1.164g (0.006mol) initiator α-bromoisobutyrate ethyl ester, 15g (0.117mol) butyl acrylate monomer, 0.168g (0.00117mol) catalyst CuBr, 0.405g (0.00234 mol) Ligand PMDETA, 5.25g solvent toluene, mix well. The system was evacuated and filled with nitrogen, and stirred and reacted in an oil bath at 70°C. After 8 hours, add 15 g (0.06 mol) hexafluorobutyl methacrylate, 0.0864 g (0.0006 mol) CuBr, 0.212 g (0.0012 mol) ligand PMDETA to the flask, pump again and fill with nitrogen, in an oil bath at 80 ° C The stirring reaction was continued for 12 hours, and the reaction was completed. After the catalyst and solvent were removed, a light yellow translucent viscous product was obtained, with a product quality of 26 g and a yield of 86.7%. The product was tested by GPC, and the test results are shown in Table 1...

Embodiment 2

[0034] Example 2: (Molecular weight 5000, block mass ratio of 4:1 butyl acrylate and hexafluorobutyl methacrylate block copolymer)

[0035]In a 100ml four-necked flask, add 0.97g (0.005mol) initiator α-bromoisobutyrate ethyl ester, 20g (0.156mol) monomer butyl acrylate, 0.225g (0.00156mol) catalyst CuBr, 0.552g (0.00312 mol) ligand PMDETA, 6g solvent toluene, mix well. The system was evacuated and filled with nitrogen, and stirred and reacted in an oil bath at 60°C. After 8 hours, add 5g (0.02mol) hexafluorobutyl methacrylate, 0.0288g (0.0002mol) CuBr, 0.0708g (0.0004mol) ligand PMDETA to the flask. The stirring reaction was continued for 10 hours, and the reaction was completed. After removing the catalyst and the solvent, a light yellow translucent viscous product was obtained, with a product quality of 22 g and a yield of 88%. The product was tested by GPC, and the test results are shown in Table 1. The butyl acrylate segment and the hexafluorobutyl methacrylate segmen...

Embodiment 3

[0036] Example 3: (Molecular weight 5000, block mass ratio of 9:1 butyl acrylate and hexafluorobutyl methacrylate block copolymer)

[0037] In a 100ml four-necked flask, add 0.776g (0.004mol) initiator α-bromoisobutyrate ethyl ester, 18g (0.141mol) monomer butyl acrylate, 0.203g (0.00141mol) catalyst CuBr, 0.499g (0.00282 mol) Ligand PMDETA, 5.4g solvent ethyl acetate, mix well. The system was evacuated and filled with nitrogen, and stirred and reacted in an oil bath at 60°C. After 8 hours, add 2 g (0.008 mol) hexafluorobutyl methacrylate, 0.0115 g (0.00008 mol) CuBr, 0.028 g (0.00016 mol) ligand PMDETA to the flask. The stirring reaction was continued for 8 hours, and the reaction was completed. After the catalyst and solvent were removed, a light yellow translucent viscous product was obtained, with a product quality of 17.4 g and a yield of 87%. The product was tested by GPC, and the test results are shown in Table 1.

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Abstract

The invention discloses fluorocoating resin, belongs to the field of chemical materials, and relates to coating resin prepared by mixing fluorinated acrylate block copolymer synthesized by atom transfer radical polymerization and other resin. The method comprises the following steps of: preparing fluorinated block copolymer with narrow molecular weight distribution and controllable molecular weight, wherein the mass ratio of the fluorinated block to the non-fluorinated block is 1:9-1:1, and the total molecular weight is 2,000-100,000; and mixing the fluorinated block copolymer and other resin, wherein the fluorinated block copolymer accounts for 0.5 to 100 percent of the total mass of the resin, and the other resin is acrylic resin and polyurethane. The prepared block polymer has controllable molecular weight and clear structure. The fluorocoating resin has a mall amount of fluorine-containing monomer, and has excellent comprehensive performance such as surface performance, ageing-resistant performance and the like.

Description

technical field [0001] The invention belongs to the field of chemical materials and relates to a coating resin formed by mixing a fluorine-containing acrylate block copolymer synthesized by atom transfer radical polymerization (ATRP) and other resins. The formed coating resin uses less fluorine-containing monomers and has excellent performance. technical background [0002] The molecular structure of fluorocarbon resin has a unique fluorine-carbon bond, which endows fluorocarbon resin coatings with excellent properties such as ultra-long weather resistance, chemical corrosion resistance, stain resistance and self-cleaning. However, due to the high price of fluorine-containing monomers, the application and promotion of fluorocarbon resins and fluorocarbon coatings are limited. [0003] CN 101544732A discloses a preparation method of a fluorine-containing copolymer, which is carried out by graft copolymerization of fluorocarbon resin, methacrylate, acrylate and functional m...

Claims

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Application Information

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IPC IPC(8): C09D153/00C09D133/00C09D175/04C09D163/00C09D167/08C08F293/00
Inventor 李坚王红丹王壮蓝莉莉任强
Owner 溧阳常大技术转移中心有限公司
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