Pentaerythritol tetraacrylate → Pentaerythritol

Temperature

10 °C

The alkylidenediamine (ADA for abbreviation) is added into a round-bottom flask equipped with a stirring, a reflux condenser and a thermometer, and cooled to 10° C. below under nitrogen. The methanol solution of pentaerythritol tetraacrylate (PETA for abbreviation) is then added to the flask, and the mixture is allowed to react at 25˜35° C. for 20˜48 hours, preferably, at 25˜30° C. for 24˜30 hours. The result solution is subjected to vacuum distillation to remove excess alkylidenediamine (ADA) and methanol at 60˜110° C. for 5˜10 hours, to obtain a light-amber viscous material, i.e., intermediate pentaerythritol core, amino terminated dendrimer (PETA-ADA-12NH for abbreviation), wherein a general reaction equation thereof is as follows:

1. customequipped with a stirring, a reflux condenser
2. customto react at 25˜35° C. for 20˜48 hours
3. waitpreferably, at 25˜30° C. for 24˜30 hours
4. distillationThe result solution is subjected to vacuum distillation
5. customto remove excess alkylidenediamine (ADA) and methanol at 60˜110° C. for 5˜10 hours

ORD record

ord-a5e1100d81d64c69bed90966571e7514

Source dataset

uspto-grants-2016_08

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US09403707B2