A kind of amphiphilic macromolecular antistatic agent and preparation method thereof
An antistatic agent and macromolecule technology, applied in the field of amphiphilic macromolecular antistatic agent and its preparation, can solve the problems of strong environmental humidity dependence, poor antistatic performance, easy migration, etc., and achieve excellent antistatic ability. Effect
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[0026] A kind of preparation method of antistatic agent comprises the following steps:
[0027] 1) Add polyethylene glycol, part of ε-caprolactone (35-45%) and part of catalyst (35-45%) into the reaction system, and react at 100-150° C. for 2-6 hours. Wherein, the catalyst is added in the form of catalyst toluene solution, and the catalyst concentration is 0.1-0.5wt%
[0028] 2) Add the remaining ε-caprolactone and the remaining catalyst into the reaction system, and continue the reaction at a temperature of 110-160° C. for 6-12 hours.
[0029] 3) Distill under reduced pressure, dissolve the obtained product with chloroform, then precipitate with anhydrous methanol or ethanol, filter for 3 to 4 times, and vacuum dry at 30 to 60°C for 10 to 15 hours to obtain polyhexene Lactone-polyethylene glycol-polycaprolactone.
[0030] The catalyst is an organotin catalyst, including dibutyltin diacetate, dibutyltin dibenzoate, dibutyltin diisocyanate, tri-n-butyltin methoxide, dibutylti...
Embodiment 1
[0032] Get 10g polyethylene glycol-2000, 80g ε-caprolactone, 8.4mL stannous octoate toluene solution (the mass concentration of the solution is 0.4%), put into a 500mL three-necked flask with stirring device and reflux device under the protection of nitrogen , set the temperature at 110°C, start stirring, and add the remaining 120g ε-caprolactone and 15.6mL stannous octoate toluene solution after the reaction was refluxed for 4 hours, raise the temperature to 120°C, continue to stir, react and reflux for 8 hours, and distill under reduced pressure for 2 hours The reaction was stopped after removal of toluene. The reaction product was dissolved with chloroform, and then precipitated with anhydrous methanol or ethanol. After repeated 4 times, the product was taken out and dried in vacuum at 40°C for 12 hours to obtain the required antistatic agent.
Embodiment 2
[0034] Get 10g polyethylene glycol-6000, 40g ε-caprolactone, 6.7mL dibutyltin diisocyanate toluene solution (the mass concentration of the solution is 0.2%), put into a stirring device and reflux under the protection of nitrogen In the 250mL three-neck flask of the device, set the temperature at 110°C, start stirring, and add the remaining 60g ε-caprolactone and 10mL dibutyltin diisocyanate toluene solution after the reaction was refluxed for 6 hours, and raise the temperature to 120°C Continue to stir the reaction to reflux for 10h, and stop the reaction after vacuum distillation to remove toluene for 2h. The reaction product was dissolved with chloroform, and then precipitated with anhydrous methanol or ethanol. After repeated 4 times, the product was taken out and dried in vacuum at 40°C for 12 hours to obtain the required antistatic agent.
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