The influence of propylene impurities on the polypropylene production process
Thread Content
The discussion is as titled; recently I’ve been trying to organize information on the impact of various substances present in propylene on the polymerization reaction of polypropylene. Taking the Mitsui process as an example, for instance, I’m looking into at what level of PPM water has a significant effect on the reaction, as well as the effects of methylacetylene, methacrylene, and so on. Thank you all
It’s mainly the effect on catalyst activity, I guess. Different processes have varying capacities to accept or release impurities; generally it’s 1 ppm, but for some impurities the level can go up to 5–10 ppm. It’s hard to say specifically; it depends on the requirements of the patent holder, as well as the impact of propylene impurities on the reaction in actual use.