Method for producing polyphenylene ether amine

A method for producing polyphenylene ether amine, the method comprising following steps:

• step (a):
• providing a hydrogenation reaction tank with a guided gas stirrer adapted to perform gas extracting, gas exhausting, and stirring functions, wherein the guided gas stirrer comprises a hollow rotation shaft and a vane disposed at an end of the hollow rotation shaft, and the hollow rotation shaft has a gas extracting hole and a gas exhausting hole;
• step (b):
• placing a reaction solution in the hydrogenation reaction tank, wherein the reaction solution is nitro polyphenylene ether dissolved in a solvent;
• step (c):
• adding a hydrogenation catalyst to the reaction solution, wherein a usage amount of the hydrogenation catalyst is 0.2-15 weight percentage of the nitro polyphenylene ether;
• step (d):
• introducing a hydrogen gas into the hydrogenation reaction tank, so that a hydrogen pressure in the hydrogenation reaction tank is 10-120 bars;
• step (e):
• activating the guided gas stirrer, so that the hollow rotation shaft in the guided gas stirrer reaches a predetermined rotation speed to drive the vane to stir the reaction solution, wherein the hollow rotation shaft introduces the hydrogen gas from a top of the reaction solution through the gas extracting hole of the hollow rotation shaft and transmits the hydrogen gas into the reaction solution through the gas exhausting hole of the hollow rotation shaft, and the hydrogen gas in the reaction solution is stirred by the vane and evenly distributed;
• step (f):
• carrying out a hydrogenation reaction, wherein a reaction temperature is 50-200 degrees Celsius, and a reaction time is 1-20 hours to hydrogenate the nitro polyphenylene ether in the reaction solution to the polyphenylene ether amine;
• and
• step (g):
• cooling down the reaction solution to a room temperature and removing the hydrogenation catalyst, wherein the hydrogenation catalyst comprises a palladium catalyst.