Photosensitive compound and photosensitive composition
A technology of photosensitive compounds and photosensitive compositions, applied in chemical instruments and methods, photosensitive materials for optomechanical equipment, optics, etc., capable of solving problems such as unsatisfactory resolution
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Embodiment 1
[0140] Synthesis of disodium 4,4'-diazido-2,2'-methylenedibenzenedisulfonate
[0141] (1) 3-aminobenzenesulfonic acid (10 grams, 57.8 mmol) is dissolved in 4.5 grams of 37% formalin (in water), 20 grams of concentrated hydrochloric acid (the content of pure substance is 35%) and 20 grams of water composition In a mixed solvent, the reaction was carried out at 80° C. for 5 hours. The reaction mixture was cooled, then sodium hydroxide was added to make it basic, the mixture was poured into 500 ml of acetone, and the resulting solid precipitate was collected by filtration to obtain 6.7 g (16.7 mmol) of crude 4,4'-diamino-2 , 2'-methylene diphenyl disulfonate disodium, yield = 58%.
[0142] (2) The crude disodium 4,4'-diamino-2,2'-methylenedibenzenedisulfonate (6.7 g, 16.7 mmol) prepared in (1) was dissolved in 100 g of water and In a mixed solvent composed of 5 g of concentrated hydrochloric acid (the content of pure substance is 35%), the solution is cooled to 0-5°C. To this ...
Embodiment 2
[0152] Synthesis of disodium 4,4'-diazido-3,3'-methylenedibenzenedisulfonate
[0153] (1) 2-aminobenzenesulfonic acid (10 grams, 57.8 mmol) is dissolved in 4.5 grams of 37% formalin (in water), 20 grams of concentrated hydrochloric acid (the content of pure substance is 35%) and 20 grams of water composition In a mixed solvent, the reaction was carried out at 80° C. for 5 hours. The reaction mixture was cooled, then sodium hydroxide was added to make it alkaline, the mixture was poured into 500 ml of acetone, and the resulting solid precipitate was collected by filtration to obtain 7.4 g (18.5 mmol) of crude 4,4'-diamino-3 , 3'-Methylene diphenyl disulfonate disodium, yield = 64%.
[0154] (2) The crude disodium 4,4'-diamino-3,3'-methylenedibenzenedisulfonate (7.4 g, 18.5 mmol) prepared in (1) was dissolved in 100 g of water and 5 In a mixed solvent composed of 1 gram of concentrated hydrochloric acid (the content of pure substance is 35%), the solution is cooled to 0-5°C. ...
Embodiment 3
[0164] Synthesis of disodium 4,4'-diazido-2,2'-(1,2-ethylidenebenzene)disulfonate
[0165] (1) 4,4'-diamino-2,2'-stilbene disulphonic acid disodium (20 g, 48.7 mmol) was dissolved in 150 ml of ethanol, and 1.0 g of 5% palladium-carbon was added thereto, Under a hydrogen atmosphere at normal pressure, the mixture was stirred at room temperature for hydrogenation. After confirming that hydrogen adsorption stopped, 5% palladium-carbon was removed by filtration, and ethanol was distilled off under reduced pressure to obtain 18.4 g (44.3 mmol) of crude 4,4'-diamino-2,2'-(1,2-ethylene phenyl) disodium sulfonate, yield = 91%.
[0166] (2) The crude disodium 4,4'-diamino-2,2'-ethylenebenzenedisulfonate (18.4 g, 44.3 mmol) prepared in (1) was dissolved in 800 g of water and 13 g In a mixed solvent composed of concentrated hydrochloric acid (content of pure substance: 35%), the solution was cooled to 0-5°C. To this solution was added an aqueous solution (12 ml) containing 3.4 g (48.7...
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