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High-solid hydroxyl fluorine-containing acrylic resin and preparation method thereof

The technology of acrylic resin and hydroxyl-containing acrylate, which is applied in the field of high-solid hydroxyl-containing fluorine-containing acrylic resin and its preparation field, can solve the problems that high-solid hydroxyl-containing fluorine-containing acrylic resin has not been synthesized, high resin cost and high VOC content, Achieve high transparency, low VOC content and excellent performance

Inactive Publication Date: 2012-08-08
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since there are only 3 fluorine atoms in each trifluoroethyl (meth)acrylate molecule, in order to obtain a fluorine-containing resin with a high fluorine content, the proportion of fluorine-containing monomers must be increased. Therefore, in this patent, the fluorine-containing acrylic acid mono The amount of monomer used is up to 50%, which will inevitably lead to a decrease in the proportion of other monomers, and the cost of the synthesized resin is higher; in addition, from the published examples, the solid content of this resin is only 45-55%, and the VOC content is too high
As far as the current published patents and papers are concerned, there is no report on the synthesis of high-solid hydroxyl fluorine-containing acrylic resins

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] (1) In parts by weight, put 24 parts of butyl acetate into the reactor, feed nitrogen to exhaust oxygen, and raise the temperature to 85°C;

[0024] (2) 19 parts of octafluoropentyl methacrylate, 13 parts of β-hydroxypropyl methacrylate, 11 parts of isobornyl methacrylate, 8 parts of n-butyl acrylate, 1.8 parts of azobisisobutyronitrile , 1 part of 2-mercaptoethanol and 12 parts of butyl acetate are added to the reactor at a uniform speed within 3.5 hours, and after the addition is completed, continue the insulation reaction for 2 hours;

[0025] (3) Add 0.2 parts of azobisisobutyronitrile and 4 parts of butyl acetate into the reactor, continue the heat preservation reaction for 1 hour, and cool to room temperature;

[0026] (4) Pour the reacted polymer solution into cyclohexane to precipitate a polymer precipitate. After the polymer precipitate is separated, it is vacuum-dried at 25°C for 24 hours, and then dissolved in butyl acetate to obtain the product.

[0027] It...

Embodiment 2

[0029] (1) In parts by weight, put 18 parts of 2-butanone into the reactor, feed nitrogen to exhaust oxygen, and raise the temperature to 80°C;

[0030] (2) 13 parts of dodecafluoroheptyl methacrylate, 18 parts of β-hydroxyethyl methacrylate, 15 parts of methyl methacrylate, 6 parts of ethyl acrylate, 1.6 parts of acrylic acid, 2.7 parts of di-tert-amyl A mixed solution consisting of 2.1 parts of 3-mercapto-1,2-propanediol and 9 parts of 2-butanone was added to the reactor at a uniform speed within 4 hours, and after the addition was completed, the reaction was continued for 2 hours;

[0031] (3) Add 0.3 parts of di-tert-amyl peroxide and 3 parts of 2-butanone into the reactor, continue the heat preservation reaction for 1 hour, and cool to room temperature;

[0032] (4) Pour the reacted polymer solution into cyclohexane to precipitate a polymer precipitate. After the polymer precipitate is separated, it is vacuum-dried at 25°C for 24 hours, and then dissolved in butyl acetate...

Embodiment 3

[0035] (1) In parts by weight, put 27 parts of toluene into the reactor, feed nitrogen to exhaust oxygen, and raise the temperature to 100°C;

[0036] (2) 24 parts of tetrafluoropropyl acrylate, 25 parts of β-hydroxyethyl acrylate, 15 parts of cyclohexyl methacrylate, 5 parts of n-octyl acrylate, 1 part of methacrylic acid, 4 parts of styrene, 2.25 Parts of azobisisobutyronitrile, 3.75 parts of n-dodecylmercaptan, and 13.5 parts of toluene were added into the reactor at a uniform speed within 4 hours, and after the addition was completed, the insulation reaction was continued for 1.5 hours;

[0037] (3) Add 0.25 parts of azobisisobutyronitrile and 4.5 parts of toluene into the reactor, continue the heat preservation reaction for 2 hours, and cool to room temperature;

[0038] (4) Pour the reacted polymer solution into cyclohexane to precipitate a polymer precipitate. After the polymer precipitate is separated, it is vacuum-dried at 25°C for 24 hours, and then dissolved in buty...

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Abstract

The invention relates to high-solid hydroxyl fluorine-containing acrylic resin and a preparation method thereof. The high-solid hydroxyl fluorine-containing acrylic resin comprises the following components in parts by weight: 10-25 parts of fluorine-containing acrylic ester monomer, 10-30 parts of hydroxyl group-containing acrylic ester monomer, 5-20 parts of methyl acrylic alkyl ester monomer, 5-15 parts of acrylic alkyl ester monomer, 0.3-6 parts of initiator, 0.2-4 parts of chain transfer and 30-50 parts of solvent. According to the hydroxyl fluorine-containing acrylic resin, the solid content reaches up to 75-90 percent, the viscosity is only 900-3,000 mPa.s, the number-average molecular weight is 1,200-6,000, and the molecular weight distribution index is 1.4-2.5; and the resin has the advantages of superior performance, high transparency, no odor of mercaptan, low VOC (Volatile Organic Compound) content, a fluorine carbon group included on a polymer chain and superior corrosion resistance of the resin and can be applied to the fields such as heavy anticorrosive coatings, marine antifouling coatings, aircraft surface coatings, anti-doodling coatings, exterior wall coatings of high weathering resistance and the like.

Description

technical field [0001] The invention relates to the technical field of design coatings, in particular to a high-solid hydroxyl fluorine-containing acrylic resin and a preparation method thereof. Background technique [0002] Fluorine is the most electronegative element, and the fluorine-carbon bond formed with carbon atoms has a bond energy as high as 485.3KJ / mol, so it is very stable; the fluorine atoms arranged in a helical shape in the fluorine-containing acrylic resin play a very good role in the carbon skeleton. The "shielding protection" function of the main chain protects the interior of the main chain from ultraviolet radiation and chemical reagents. Therefore, compared with ordinary acrylic resins, it has better performance and wider applications. With the enhancement of people's awareness of environmental protection, the control of VOC content in coatings is becoming more and more stringent. Research and development of high-solids, low-viscosity resins is an effect...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/28C08F220/22C08F220/14C08F220/18C08F2/38C09D133/14
Inventor 肖国民刘虎尚倩倩朱红艳
Owner SOUTHEAST UNIV
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