Preparation method and application of a formaldehyde-free anti-wrinkle finishing agent
An anti-wrinkle finishing agent and formaldehyde technology, applied in the field of preparation of formaldehyde-free anti-wrinkle finishing agents, can solve problems such as eliminating formaldehyde, and achieve the effect of excellent anti-wrinkle performance
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Embodiment 1
[0017] (1) Under nitrogen protection and ice-salt bath conditions, add 0.1mol ethylenediamine and 40mL anhydrous methanol successively into a three-necked flask with magnetic stirring, reflux condenser, and thermometer, and stir evenly; weigh 0.5mol acrylic acid Add the methyl ester to 40mL of anhydrous methanol, and dropwise add it into the above-mentioned three-neck flask through a constant pressure dropping funnel. After about 2 hours, the dropwise addition is completed, and then react for 30 minutes under the condition of ice-salt bath, remove the ice-salt bath, and set at 25°C After the reaction, at 30°C and 125Pa pressure, use a rotary evaporator to distill off the solvent methanol and excess methyl acrylate under reduced pressure to obtain 0.5 generation PAMAM;
[0018] (2) under nitrogen protection and ice-salt bath conditions, the 0.5 generation PAMAM and 150mL anhydrous methanol of step (1) gained are joined in the there-necked flask with magnetic stirring, reflux con...
Embodiment 2
[0025] (1) Under nitrogen protection and ice-salt bath conditions, add 0.1mol ethylenediamine and 40mL anhydrous methanol successively into a three-necked flask with magnetic stirring, reflux condenser, and thermometer, and stir evenly; weigh 0.6mol acrylic acid Add the methyl ester to 40mL of anhydrous methanol, and dropwise add it into the above-mentioned three-neck flask through a constant pressure dropping funnel. After about 2 hours, the dropwise addition is completed. After the reaction, at 30°C and 125Pa pressure, use a rotary evaporator to carry out vacuum distillation to remove the solvent methanol and excess methyl acrylate to obtain 0.5 generation PAMAM;
[0026] (2) under nitrogen protection and ice-salt bath conditions, the 0.5 generation PAMAM and 250mL anhydrous methanol of step (1) gained are joined in the there-necked flask with magnetic stirring, reflux condenser, thermometer, stir; Add triethylenetetramine dropwise to the above-mentioned three-necked flask u...
Embodiment 3
[0030] (1) Under nitrogen protection and ice-salt bath conditions, add 0.1mol ethylenediamine and 40mL anhydrous methanol successively into a three-necked flask with magnetic stirring, reflux condenser, and thermometer, and stir evenly; weigh 0.55mol acrylic acid Add the methyl ester to 40mL of anhydrous methanol, and dropwise add it into the above-mentioned three-necked flask through a constant pressure dropping funnel. The dropwise addition is completed in about 2 hours, and then react for 30 minutes under the condition of ice-salt bath, remove the ice-salt bath, After the reaction, at 30°C and 125Pa pressure, use a rotary evaporator to distill off the solvent methanol and excess methyl acrylate under reduced pressure to obtain 0.5 generation PAMAM;
[0031] (2) under nitrogen protection and ice-salt bath conditions, the 0.5 generation PAMAM and 200mL anhydrous methanol of step (1) gained are joined in the there-necked flask with magnetic stirring, reflux condenser, thermomet...
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