Modified aldehyde ketone resin and preparation method thereof and emulsified ink
A technology of aldehyde ketone resin and aldehyde ketone resin, which is applied in the fields of emulsified ink, modified aldehyde ketone resin and its preparation, can solve the problems of poor stability, narrow matching selection surface, poor stability of emulsified ink, etc., and achieves improved water solubility. performance, low waste, improved pigment wetting and weatherability
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Embodiment 1
[0078] S1. Dissolve 5.0 g of aldehyde and ketone resin with a molecular weight of 1800 g / mol in 100 mL of dry toluene, and cool the above solution to -5°C. Under stirring, 10 mmol of bromoisobutyryl bromide in toluene was slowly added dropwise to the above-mentioned aldehyde and ketone resin solution. After the dropwise addition, the reaction was continued at -5°C for 5 hours, and the temperature was slowly raised to room temperature and stirred for 24 hours.
[0079] Then filter and remove the precipitate, the filtrate was washed with water until neutral, and then dried by adding anhydrous magnesium sulfate. The solvent was distilled off under reduced pressure to obtain a brominated aldehyde and ketone resin as a pale yellow solid. The NMR spectrum of the product is figure 1 As shown, the chemical shifts in the obtained spectrum are in good agreement with the expected structure, confirming the successful preparation of the compound.
[0080]S2. Take 1 g of the brominated al...
Embodiment 2
[0082] S1. Dissolve 5.0 g of aldehyde and ketone resin with a molecular weight of 1800 g / mol in 100 mL of dry toluene, and cool the above solution to -5°C. Under stirring, slowly add 5 mmol of bromoisobutyryl bromide toluene solution dropwise to the above-mentioned aldehyde and ketone resin solution. After the dropwise addition, continue to react at -5°C for 5 hours, and slowly warm up to room temperature and stir for 24 hours.
[0083] Then filter and remove the precipitate, the filtrate was washed with water until neutral, and then dried by adding anhydrous magnesium sulfate. The solvent was distilled off under reduced pressure to obtain a brominated aldehyde and ketone resin as a pale yellow solid.
[0084] S2. Take 1 g of the brominated aldehyde and ketone resin obtained in step S1 and dissolve it in 20 mL of dry toluene, then add 2.5 mmol of polyethylene glycol methacrylate, stir and mix, then pass nitrogen for 20 minutes, and add 0.05 One mmol of cuprous bromide and 0.0...
Embodiment 3
[0086] S1. Dissolve 5.0 g of aldehyde and ketone resin with a molecular weight of 1800 g / mol in 100 mL of dry toluene, and cool the above solution to -5°C. Under stirring, 15 mmol of bromoisobutyryl bromide in toluene was slowly added dropwise to the above-mentioned aldehyde and ketone resin solution. After the dropwise addition, the reaction was continued at -5°C for 5 hours, and the temperature was slowly raised to room temperature and stirred for 24 hours.
[0087] Then filter and remove the precipitate, the filtrate was washed with water until neutral, and then dried by adding anhydrous magnesium sulfate. The solvent was distilled off under reduced pressure to obtain a brominated aldehyde and ketone resin as a pale yellow solid.
[0088] S2. Take 1 g of the brominated aldehyde and ketone resin obtained in step S1 and dissolve it in 20 mL of dry toluene, then add 2.5 mmol of polyethylene glycol methacrylate, stir and mix, then pass nitrogen for 20 minutes, and add 0.05 One...
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