| 摘要 |
The present invention relates to a polymerisation process and a multimodal polymer, and in particular to a process for the polymerisation of monomer selected from ethylene and propylene in a reaction system comprising at least three reactors operated in series, which process comprises (a) polymerising monomer in a first reactor, said first reactor having a volume of at least 50 m″, to produce a first polymer, (b) passing the first polymer to a second reactor and polymerising monomer in the second reactor to produce a second polymer comprising the first polymer and polymer produced in the second reactor, (c) passing the second polymer to a third reactor and polymerising monomer in the third reactor to produce a third polymer comprising the second polymer and polymer produced in the third reactor, wherein the polymerisations are performed such that between 0.01 and 5 w % of the total mass of the third polymer is polymer produced in the second reactor, and to the product thereof. |
