Photosensitive resin composition containing polyimide precursor
A polyimide precursor and photosensitive resin technology, which is applied in the field of photosensitive resin compositions, can solve the problems of difficulty in obtaining patterns, difficulty in adjusting the characteristics of sensitivity and residual film rate, difficulty in selecting a variety of materials, etc. Excellent effect of elasticity and resilience
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Synthetic example 1
[0087] Under dry nitrogen flow, 9,9-bis-(4-aminophenyl)-9H-fluorene-3,6-diol 30.9g (0.05mol) was dissolved in acetone 100mL, and propylene oxide 17.4g (0.3 mol) and then cooled to -5°C. A solution of 20.4 g (0.11 mol) of 3-nitrobenzoyl chloride dissolved in 100 mL of acetone was then added dropwise to the above reaction solution.
[0088] After completion of the dropwise addition, the reaction was carried out at -5°C for 3 hours, and then returned to room temperature. Concentrate the solution with a rotary evaporator, wash the obtained solid with water and acetone, and dry it with a vacuum dryer at 80° C. to obtain a solid.
[0089] Thereafter, 25 g of the dry solid was added to a 1.0 L three-necked flask together with 2 g of 5% palladium-carbon and 0.6 L of methoxyethanol (Methyl Cellosolve), and the internal temperature was adjusted to 60°C. 3.5 g of saturated hydrazine hydrate was slowly added dropwise thereto.
[0090] After the dropwise addition was completed and stirr...
Synthetic example 2
[0094] Under dry nitrogen flow, 9,9-bis-(4-aminophenyl)-9H-fluorene-3,6-diol 35.6g (0.05mol) and allyl glycidyl ether (allyl glycidyl ether) 34.5 g (0.3 mol) was dissolved in 100 g of γ-butyrolactone (GBL), and cooled to -5°C. 22.1 g (0.11 mol) of chlorinated trimellitic anhydride dissolved in 50 g of GBL was added dropwise thereto so that the temperature of the reaction liquid did not exceed 0°C. After completion of the dropping, the reaction was carried out at 0° C. for 3 hours to obtain a reaction solution.
[0095] The reaction solution was concentrated with a rotary evaporator and poured into 1L of toluene to obtain an anhydride of chemical formula 7.
[0096] chemical formula 7
[0097]
Synthetic example 3
[0099] Under a dry nitrogen stream, 15.4 g (0.025 mol) of the hydroxyl-containing diamine obtained in Synthesis Example 1 was dissolved in 50 g of N-methyl-2-pyrrolidone (NMP). 17.8 g (0.025 mol) of the hydroxyl-containing acid anhydride obtained in the synthesis example 2 and 0.74 g (0.005 mol) of maleic anhydride were added there, and it was made to react at 60 degreeC for 6 hours, and the polyimide precursor 1 was obtained.
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