| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for producing propylene polymerized materials in a stable manner without operation stop due to the blockage of pipes during production of the propylene polymerized materials containing propylene polymer component with high content of an α-olefin monomeric unit.SOLUTION: There is provided a method for producing a propylene polymerized material comprising a propylene polymer component (A) and a propylene polymer component (B) in at least two steps, in which the method includes the following first and second steps. In the first step, propylene and ethylene are polymerized to produce the propylene polymer component (A). In the second step, propylene and an α-olefin are polymerized to produce the propylene polymer component (B) in the presence of the propylene polymer component (A) under a condition satisfying requirement (a). Requirement (a): the partial pressure of the α-olefin in the second step is 0.10 MPa or more and satisfies expression (1). Expression (1): X≤0.0025×Y+0.2850.SELECTED DRAWING: None |
