Preparation method for safe and environment-friendly alcohol-free fountain solution
A safe, environmentally friendly, alcohol-free technology, which is applied in the preparation and printing of printing surfaces, can solve problems such as corrosion of metal parts, adverse effects of the environment, and reduce surface tension, so as to prevent corrosion, strengthen the function of killing microorganisms, and prevent microorganisms pollution effect
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example 1
[0017] Weigh 50g of protein powder and add it to a flask containing 400mL of hydrochloric acid with a mass fraction of 10%, place the flask in an oil bath, control the temperature at 95°C, stir and hydrolyze for 2 hours to obtain a protein hydrolyzate, and dissolve the protein hydrolyzate Filter, collect filtrate, and add mass fraction in filtrate and be that 15% sodium hydroxide solution is adjusted pH to be 6.5, obtain amino acid solution, standby; Take by weighing 30g lauric acid and join in the there-necked flask that fills 100mL dichloromethane, and Place the flask in a water pot, control the temperature at 20°C, then add 40mL of thionyl chloride dropwise, control the dropwise addition within 10min, after the dropwise addition is complete, stir for 2min, then add 0.3mLN,N-dimethylformamide , heat up to 70°C, continue to stir and react for 2 hours, then transfer the product to a rotary evaporator, and rotary evaporate to 1 / 5 of the original volume to obtain a concentrated s...
example 2
[0020]Weigh 60g of protein powder and add it to a flask containing 500mL of hydrochloric acid with a mass fraction of 10%, place the flask in an oil bath, control the temperature at 100°C, stir and hydrolyze for 3 hours to obtain a protein hydrolyzate, and dissolve the protein hydrolyzate Filter, collect filtrate, and add mass fraction in filtrate and be that 15% sodium hydroxide solution adjusts pH to be 6.5, obtains amino acid solution, for subsequent use; Take by weighing 40g lauric acid and join in the there-necked flask that fills 120mL dichloromethane, and Place the flask in a water pot, control the temperature at 25°C, and then add 50 mL of thionyl chloride dropwise, and control the dropwise addition within 15 minutes. After the dropwise addition is completed, stir for 3 minutes, and then add 0.5 mL of N,N-dimethylformamide , heat up to 80°C, continue to stir and react for 3 hours, then transfer the product to a rotary evaporator, and rotary evaporate to 1 / 5 of the origi...
example 3
[0023] Weigh 55g of protein powder and add it to a flask containing 450mL of hydrochloric acid with a mass fraction of 10%, place the flask in an oil bath, control the temperature at 98°C, stir and hydrolyze for 3 hours to obtain a protein hydrolyzate, and dissolve the protein hydrolyzate Filter, collect filtrate, and add mass fraction in filtrate and be that 15% sodium hydroxide solution is adjusted pH to be 7.0, obtain amino acid solution, standby; Take by weighing 35g lauric acid and join in the there-necked flask that fills 110mL dichloromethane, and Place the flask in a water pot, control the temperature at 23°C, then add 45mL of thionyl chloride dropwise, control the dropwise addition within 13min, after the dropwise addition is complete, stir for 3min, then add 0.4mLN,N-dimethylformamide , heat up to 75°C, continue to stir and react for 3 hours, transfer the product to a rotary evaporator, and rotary evaporate to 1 / 5 of the original volume to obtain a concentrated soluti...
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