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Biologic photosensitive polyimide resin and coating prepared from same

A technology of photosensitive polyimide resin and bio-based dimeramine, applied in the direction of coating, etc., can solve the problems of poor coating adhesion, unfavorable economic and environmental protection, complex film forming process, etc., achieve fast curing speed, reduce cost Membrane process, the effect of low curing temperature

Inactive Publication Date: 2016-05-18
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the electronic polarization, charge transfer, high symmetry and crystallinity of the main chain of the polyimide molecule, there is a strong intermolecular force in the polyimide, and the molecular chains are closely packed, resulting in the following polyimides. Disadvantages: (1) Insoluble in common organic solvents, poor solubility; (2) The melting temperature is too high, difficult to process; (3) The film generally presents yellowish brown, low transparency, high hygroscopicity, high dielectric constant, coating adhesion Poor focus; (4) The film forming process is complicated, the energy consumption is serious, and it is not conducive to the economy and environmental protection
Currently, to the best of our knowledge, there are few reports on the preparation of photocurable bio-based polyimide coatings

Method used

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  • Biologic photosensitive polyimide resin and coating prepared from same
  • Biologic photosensitive polyimide resin and coating prepared from same
  • Biologic photosensitive polyimide resin and coating prepared from same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] (1) Synthesis of bio-based photosensitive polyimide resin: First, add 1.243g of 2,2-bis(4-aminophenyl)hexafluoropropane, 0.998 gPriamine1074, 20g of anhydrous m-cresol, stir until a clear solution is formed, slowly add 3.554g of 4,4'-(hexafluoroisopropylene) diphthalic anhydride under vigorous stirring, and react at 80°C for 4h. Continue to dropwise add a mixed solution of 0.658g of 4-aminobenzoic acid, 3g of anhydrous m-cresol, and 15g of m-dichlorobenzene, and keep the reaction for 12h. Next, the temperature was raised to 200°C, and the imidization reaction was carried out for 12 hours. Finally, the temperature was lowered to 110°C, a mixture of 0.512g glycidyl methacrylate, 0.02g triphenylphosphine, and 0.02g hydroquinone was added dropwise to the flask, and the reaction was kept for 10 hours to obtain a bio-based photosensitive polyimide Resin P1.

[0033] Take an appropriate amount of P1 and precipitate it in methanol and deionized water (volume ratio: 4:1) to ob...

Embodiment 2

[0036] (1) Synthesis of bio-based photosensitive polyimide resin: First, add 0.936g of 2,2-bis(4-aminophenyl)hexafluoropropane, 1.487 gPriamine1074, 20g of anhydrous m-cresol, stir until a clear solution is formed, slowly add 3.554g of 4,4'-(hexafluoroisopropylene) diphthalic anhydride under vigorous stirring, and react at 80°C for 4h. Continue to dropwise add a mixed solution of 0.658g of 4-aminobenzoic acid, 3g of anhydrous m-cresol, and 15g of m-dichlorobenzene, and keep the reaction for 12 hours. Next, the temperature was raised to 200°C, and the imidization reaction was carried out for 12 hours. Finally, lower the temperature to 110°C, add dropwise a mixture of 0.512g glycidyl methacrylate, 0.02g triphenylphosphine, and 0.02g hydroquinone to the flask, and keep it warm for 10 hours to obtain a bio-based photosensitive polyimide Resin P2. Take an appropriate amount of P2 and precipitate it in methanol and deionized water (4:1 volume ratio) to obtain P2 powder.

[0037] ...

Embodiment 3

[0039] (1) Synthesis of bio-based photosensitive polyimide resin: First, add 0.628g of 2,2-bis(4-aminophenyl)hexafluoropropane, 1.975 gPriamine1074, 20g of anhydrous m-cresol, stir until a clear solution is formed, slowly add 3.554g of 4,4'-(hexafluoroisopropylene) diphthalic anhydride under vigorous stirring, and react at 80°C for 4h. Continue to dropwise add a mixed solution of 0.658g of 4-aminobenzoic acid, 3g of anhydrous m-cresol, and 15g of m-dichlorobenzene, and keep the reaction for 12h. Next, the temperature was raised to 200°C, and the imidization reaction was carried out for 12 hours. Finally, lower the temperature to 110°C, add dropwise a mixture of 0.512g glycidyl methacrylate, 0.02g triphenylphosphine, and 0.02g hydroquinone to the flask, and keep it warm for 10 hours to obtain a bio-based photosensitive polyimide Resin P3. An appropriate amount of P3 was precipitated in methanol and deionized water (volume ratio 4:1) to obtain P3 powder.

[0040] (2) Coating ...

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Abstract

The invention discloses biologic photosensitive polyimide resin and a coating prepared from the same. Firstly, biologic di-polyamine, 2,2-bis(4-aminophenyl) hexafluoropropane, 4,4'-(hexafluoride isopropenylancetylene) di-phthalein anhydride, 4-aminobenzoic acid and glycidyl methacrylate serve as monomers, and biologic photosensitive polyimide is synthesized; then, the UV curing high-transparency low-water-absorption flexible hydrophobic coating is prepared from synthesized biologic photosensitive polyimide, a photoinitiator, reactive diluent and a solvent. Selected biologic di-polyamine with low price and renewable resources can improve the hydrophobicity, flexibility and weather fastness of the coating, photosensitive perssad is introduced into the synthesized polymer, and the coating can be used for UV curing.

Description

technical field [0001] The invention belongs to the field of ultraviolet light-curable polymer materials, and in particular relates to a bio-based photosensitive polyimide resin and a light-curable coating prepared therefrom. Background technique [0002] As a high-temperature resistant high-performance polymer, polyimide is widely used in coatings, Fibers, separation membranes, engineering plastics, photoresists and composite materials, etc., make them play an important role in the fields of electronic microelectronics industry, aerospace industry, automobile industry, etc., and are known as "problem-solving experts". However, due to the electronic polarization, charge transfer, high symmetry and crystallinity of the main chain of the polyimide molecule, there is a strong intermolecular force in the polyimide, and the molecular chains are closely packed, resulting in the following polyimides. Disadvantages: (1) Insoluble in common organic solvents, poor solubility; (2) The...

Claims

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Application Information

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IPC IPC(8): C08F283/04C08F220/32C08G73/10C09D4/02C09D4/06
CPCC08F283/04C08G73/1007C08G73/1039C09D4/06C08F220/325
Inventor 刘敬成王宽林立成高菲刘仁刘晓亚
Owner JIANGNAN UNIV