Patent ID: 9605092
Date: 2017-03-28
CPC Classifications: C08F,Y02P

Claim:
1. 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 (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 wt % of the total mass of the third polymer is polymer produced in the second reactor.