abstract |
The present invention is a reactor system for a multimodal polyethylene composition, selected from: (a) a first reactor; (b) preferably a vacuum pump, compressor, blower, ejector or combinations thereof. A hydrogen removal unit disposed between the first reactor and the second reactor, the decompression device having an operating pressure of 100 to 200 kPa (abs ) A hydrogen removal unit that enables adjustment to a pressure within the range of; a (c) a second reactor; and (d) a third reactor, and its use as a pipe . |