| 摘要 |
A method of catalyst transitions in olefin polymerisations. A method for transitioning between two different catalysts in olefin polymerisations, a first catalyst and a second catalyst, comprising the steps of: a) discontinuing the feed of the first catalyst into the polymerisation reactor, and then b) introducing the second catalyst into the reactor, characterised in that the transitioning is performed between a chromium-based catalyst and a metallocene catalyst in the absence of any agent which deactivates or kills the catalyst. |
