| 摘要 |
<p>The present invention relates to a method for switching between steady-state and non-steady-state operations of a process for the production of a polymer by polymerisation of a monomer in the presence of a comonomer and/or hydrogen which process comprises: a1. At non-steady-state controlling the process based on the ratio of comonomer to monomer in the reactor, and b1. At steady-state controlling the process based on the flow ratio of comonomer to monomer to the reactor, and/or a2. At non-steady-state controlling the process based on the ratio of hydrogen to monomer in the reactor, and b1. At steady-state controlling the process based on the flow ratio of hydrogen to monomer to the reactor.</p> |
