How to make GPE polyether defoamer?

Dear friends, everyone, I am your lovely defoamer sharing editor. When my colleague had a dinner yesterday, a colleague said to the editor that I wrote so many sharing articles that I did not write about the production method of the defoamer, how to make the defoamer, and so on. Later, I think we can tell you about this issue. So, today I will use GPE polyether defoamer as an example to tell you.


In fact, how to make a defoamer and how to survive? If I write this way, I may write that I have n’t finished it. After all, a defoamer contains N types of industries. I ca n’t introduce them one by one. It may be true that my grandchildren haven’t finished writing yet, so I will use GPE polyether defoamer as a simple example and tell everyone how to make it. First, we need to understand what GPE polyether defoamer is used for. It can be widely used in the pharmaceutical industry, various antibiotics (such as oxytetracycline, tetracycline, gentamicin, etc.), monosodium glutamate, yeast, lemon The defoaming of fermentation processes such as acid, itaconic acid and xanthan gum can also be used in chemical, textile, printing and dyeing, paint, coating, papermaking and other industries. The method used is that the raw solution can be heated and sterilized together with the fermentation base material into the tank, or the water emulsion can be formulated to be “flow-added” and defoamed after being directly steam sterilized.

OK, after the initial understanding, we will briefly explain how to make GPE polyether defoamer. Its raw materials are: PPG, PEG, dibasic acid, fatty acid, emulsifier A, emulsifier B, liquid hydrocarbon A, liquid hydrocarbon B, foam suppressing resin, hydrophobic agent, sodium lauryl sulfate. We filled PPG, PEG, dibasic acid, fatty acid, p-toluenesulfonic acid into the reaction vessel, stirred and passed nitrogen, heated to 160 ℃, held for 5-6 hours, and heated to 180 ℃ for 20 minutes. Water precipitated during the reaction was condensed to the collector. The polyester was cooled to 40 ° C, and the ethanolamine was neutralized to pH = 6-7 to obtain a transparent amber liquid.

Based on the above, you can make a simple defoamer by yourself. However, the defoamer formula is different in different industries. You can search for information or ask the editor to try to make a defoamer

Post time: Dec-26-2019