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Fluorine-containing polyaspartic acid ester resin and synthesis method thereof

A technology of aspartic acid ester and synthesis method, which is applied in the field of fluorine-containing polyaspartic acid ester resin and its synthesis, can solve problems such as inferiority and lowering of paint film hardness, and achieve enhanced hydrophobicity, reduced surface tension, and improved The effect of protecting the role of the main chain

Active Publication Date: 2018-12-28
SHENZHEN FEIYANG JUNYAN TECH DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the small molecular weight of polyaspartic ester resin including aliphatic isocyanate, the glass transition temperature of polyaspartic ester polyurea generated after curing is 50-60 ° C, resulting in polyaspartic ester polyurea in When it is higher than 60°C, it is not in the glassy state of the polymer, but in a high elastic state, and the hardness of the corresponding paint film decreases, and its high temperature resistance, aging resistance at higher temperatures, and salt resistance Fog performance, not as good as performance at low temperatures

Method used

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  • Fluorine-containing polyaspartic acid ester resin and synthesis method thereof
  • Fluorine-containing polyaspartic acid ester resin and synthesis method thereof
  • Fluorine-containing polyaspartic acid ester resin and synthesis method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0034] A kind of fluorine-containing polyaspartate resin, the resin raw material required for its synthesis comprises the following components:

[0035]

[0036] Fumaryl chloride, trifluoroethanol, p-hydroxyphenyl ether, and pyridine were mixed in a 1000ml four-necked flask and heated to 70°C for 3 hours. The product is washed with water to remove salt, and finally purified by rectification to obtain fumaric acid-1,1'-di(2,2,2-trifluoroethyl) ester. Get 353g fumaric acid-1,1'-bis(2,2,2-trifluoroethyl) ester and 110g of 4,4'-diaminodicyclohexylmethane and mix in a 500ml four-necked flask, Heat preservation at 80° C. for 48 hours to obtain a fluorine-containing modified aspartic acid ester resin product with a molecular weight of 772. Its main reaction formula is:

[0037]

Embodiment 2

[0039] A kind of fluorine-containing polyaspartic acid ester resin, the synthetic component of described fluorine-containing polyaspartic acid ester resin is as follows:

[0040]

[0041] Fumaryl chloride, trifluoroethanol, p-hydroxyphenyl ether, and pyridine were mixed in a 1000ml four-neck flask and heated to 60°C for 3 hours. The product is washed with water to remove salt, and finally purified by rectification to obtain fumaric acid-1,1'-di(2,2,2-trifluoroethyl) ester. Take 353g of fumaric acid-1,1'-di(2,2,2-trifluoroethyl) ester with 4,4'-diaminodicyclohexylmethane and 3,3'-dimethyl-4 , 4'-diaminodicyclohexylmethane was mixed in a 500ml four-necked flask, and kept at 70°C for 60 hours to obtain a fluorine-containing modified aspartate product with a molecular weight of 791.

Embodiment 3

[0043] A kind of fluorine-containing polyaspartic acid ester resin, the synthetic component of described fluorine-containing polyaspartic acid ester resin is as follows:

[0044]

[0045] Fumaryl chloride, trifluoroethanol, p-hydroxyphenyl ether, and triethylamine were mixed in a 1000ml four-neck flask and heated to 50°C for 4 hours. The product is washed with water to remove salt, and finally purified by rectification to obtain fumaric acid-1,1'-di(2,2,2-trifluoroethyl) ester. Get 353g of fumaric acid-1,1'-bis(2,2,2-trifluoroethyl) ester and isophorone diamine and mix them in a 500ml four-necked flask, and incubate at 90°C for 30 hours to obtain the molecular weight It is 732 fluorine-containing modified aspartate product.

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Abstract

The invention discloses fluorine-containing polyaspartic acid ester resin and a synthesis method thereof and relates to the technical field of synthetic resin. The method is mainly characterized in that a fluorine-containing group is introduced on the basis of an existing polyaspartic acid ester resin system, that is, fluorine is used for modification. Thus, fluorocarbon bonds in the resin can reduce surface tension, improve water contact angle, enhance the hydrophobic property of a material and improve surface pollution resistance and icing resistance. Besides, fluorine atoms and carbon-carbon bonds form a spiral structure having a shielding effect on a main chain, so that in the molecular structure, besides the coronary structure of polyaspartic acid ester, more spiral structures can further improve the protection effect on the main chain, and the risk of damage of the main chain is reduced through dual insurance. The resin is particularly suitable for preparation of high-performanceanticorrosive coatings resistant to wear, aging, gloss loss, color change, high temperature and the like.

Description

technical field [0001] The invention relates to the technical field of synthetic resins, in particular to a fluorine-containing polyaspartate resin and a synthesis method thereof. Background technique [0002] Polyaspartic acid ester resin is a high-solid low-viscosity resin synthesized by the Michael addition method of aliphatic diamine and maleic acid diester. The polyaspartic ester polyurea produced by polyaspartic ester resin and aliphatic isocyanate has excellent mechanical properties and aging resistance. However, due to the small molecular weight of polyaspartic ester resin including aliphatic isocyanate, the glass transition temperature of polyaspartic ester polyurea generated after curing is 50-60 ° C, resulting in polyaspartic ester polyurea in When it is higher than 60°C, it is not in the glassy state of the polymer, but in a high elastic state, and the hardness of the corresponding paint film decreases, and its high temperature resistance, aging resistance at hi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C229/24C07C227/08C09D5/08
CPCC07C227/08C07C229/24C09D5/08C09D5/18C07C2601/14
Inventor 吕文章罗善锴邬茳朱龙晖鲁晓东
Owner SHENZHEN FEIYANG JUNYAN TECH DEV
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