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Long-side-chain fluorine-containing acrylic epoxy resin and coating prepared from resin as raw material

An acrylic epoxy resin, epoxy resin technology, applied in epoxy resin coatings, coatings, organic chemistry and other directions, can solve the problems of poor weather resistance, high surface energy, high water absorption, achieve good hydrophobic effect, improve stain resistance and weather resistance, the effect of reducing surface energy

Active Publication Date: 2014-07-30
GUANGZHOU CHEM CO LTD CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the current epoxy coatings have disadvantages such as high surface energy, high water absorption, poor weather resistance and poor solvent resistance, which limit the application of epoxy coatings in the field of high-end coatings

Method used

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  • Long-side-chain fluorine-containing acrylic epoxy resin and coating prepared from resin as raw material
  • Long-side-chain fluorine-containing acrylic epoxy resin and coating prepared from resin as raw material
  • Long-side-chain fluorine-containing acrylic epoxy resin and coating prepared from resin as raw material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] (1) Preparation of fluorine-containing acrylic acid long-chain polymers containing carboxyl-terminated: in parts by weight, mix 0.1 parts of dibutyl malonate, 50 parts of toluene and 0.5 parts of 25% by mass tetrabutylammonium hydroxide aqueous solution Evenly, react at 30°C for 5 hours, remove toluene under reduced pressure; then add 90 parts of tetrahydrofuran and 5 parts of trifluoroethyl acrylate monomer, mix uniformly and react for 0.1 hour, remove tetrahydrofuran under reduced pressure, and prepare the obtained product at 20 °C in a mixed solution (30 parts by mass of trifluoroacetic acid and 60 parts by mass of dioxane) for 4.5 hours to obtain a long-chain fluorine-containing acrylic acid polymer containing a carboxyl-terminated group.

[0038] (2) Preparation of long side chain fluorine-containing acrylic acid epoxy resin: in parts by weight, add 2 parts of fluorine-containing acrylic acid long-chain polymer containing carboxyl-terminated prepared in step (1) to ...

Embodiment 2

[0043](1) Preparation of fluorine-containing acrylic acid long-chain polymers containing terminal carboxyl groups: 2 mass parts of dibutyl malonate, 200 mass parts of toluene and 15 mass parts of tetrabutylammonium hydroxide aqueous solution with a concentration of 25% by mass were mixed evenly, React at 50°C for 7 hours, remove toluene under reduced pressure, then add 55 parts by mass of tetrahydrofuran and 50 parts by mass of dodecafluoroheptyl methacrylate monomer, mix uniformly and react for 2.5 hours, remove tetrahydrofuran under reduced pressure, and obtain The product was hydrolyzed in a mixed solution (27 parts by mass of trifluoroacetic acid and 40 parts by mass of dioxane) at 68°C for 6 hours to obtain a long-chain fluorine-containing acrylic acid polymer containing terminal carboxyl groups.

[0044] (2) Preparation of long side chain fluorine-containing acrylic epoxy resin: add 30 mass parts of fluorine-containing acrylic long-chain polymers containing carboxyl group...

Embodiment 3

[0049] (1) Preparation of fluorine-containing acrylic acid long-chain polymers containing terminal carboxyl groups: 0.6 parts by mass of dibutyl malonate, 80 parts by mass of toluene and 10 parts by mass of tetrabutylammonium hydroxide aqueous solution with a concentration of 25% by mass were mixed evenly, React at 40°C for 10 hours, remove the toluene under reduced pressure, then add 80 parts by mass of tetrahydrofuran and 10 parts by mass of trifluoroethyl methacrylate monomer, mix uniformly and react for 2 hours, remove the tetrahydrofuran under reduced pressure, and place the obtained product in Hydrolysis in a mixed solution (10 parts by mass of trifluoroacetic acid and 30 parts by mass of dioxane) at 70°C for 1 hour to obtain a long-chain fluorine-containing acrylic acid polymer containing a carboxyl-terminated group.

[0050] (2) Preparation of long side chain fluorine-containing acrylic epoxy resin: add 2 mass parts of fluorine-containing acrylic long-chain polymers con...

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Abstract

The invention belongs to the field of epoxy resin coatings and discloses long-side-chain fluorine-containing acrylic epoxy resin and a coating prepared from the resin as a raw material. A preparation method of the coating comprises the following steps: (1) by weight parts, mixing 0.1-5 parts of dibutyl malonate, 50-200 parts of methylbenzene and 0.5-20 parts of a tetrabutyl ammonium hydroxide water solution, reacting, adding 10-100 parts of tetrahydrofuran and 5-50 parts of fluorine-containing monomers, reacting, performing reduced pressure distillation, and hydrolyzing an obtained product to obtain a terminal carboxyl group-containing fluorine-containing acrylic long-chain polymer; (2) adding 2-50 parts of the prepared polymer in the step (1) into 30-300 parts of tetrahydrofuran, adding 1-20 parts of glycidol, 0.2-5 parts of a dehydrating agent and 0.01-2 parts of a catalyst, and reacting to prepare the long-side-chain fluorine-containing acrylic epoxy resin. The coating prepared from the resin as the raw material is low in surface energy, dirt-resistant, weather-resistant and high in hydrophobic performance.

Description

technical field [0001] The invention relates to the field of epoxy resin coatings, in particular to a long side chain fluorine-containing acrylic epoxy resin and coatings prepared as raw materials. Background technique [0002] Epoxy resin coating has the advantages of excellent bonding performance, wear resistance, high chemical stability, high temperature resistance, electrical insulation performance, low shrinkage, easy processing and low cost, etc., and is widely used in metal anticorrosion, automobile bottom Paint and industrial floor coating and other fields. However, the current epoxy coatings have disadvantages such as high surface energy, high water absorption, poor weather resistance and poor solvent resistance, which limit the application of epoxy coatings in the field of high-end coatings. [0003] Fluorine-containing acrylic long-chain polymers have many excellent properties such as heat resistance, corrosion resistance, water and oil repellency, electrical ins...

Claims

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Application Information

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IPC IPC(8): C08F120/22C08F8/08C07D303/16C07D301/00C09D133/16C09D163/00
Inventor 刘伟区闫振龙
Owner GUANGZHOU CHEM CO LTD CHINESE ACADEMY OF SCI
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