| 摘要 |
Disclosed is a method for producing a propylene polymeric material containing a propylene polymer component high in content of ±-olefin units, whereby said material can be produced stably without occurrence of stop of the operation due to clogging of a pipe. The invented method is one for producing a propylene polymeric material composed of a propylene polymer component (A) and a propylene polymer component (B) via at least two steps including a first step of producing the component (A) and a second step of producing the component (B) in a gas phase, wherein the partial pressure of the ±-olefin having 4 or more carbon atoms in the gas phase in the second step reactor is 0.10 MPa or more, and a formula, X ‰¤ 0.0025 × Y + 0.2850, is satisfied, wherein said partial pressure is X MPa and the content of the propylene polymer component (A) in the propylene polymeric material is Y% by weight. |
