| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method for producing a highly active dual catalyst capable of producing a propylene polymer including a long chain branch using a catalyst component producing a macromer and a catalyst component copolymerizing the same. <P>SOLUTION: In the method for producing an olefin polymerization catalyst at least including the following components [A-1], [A-2], [B] and [C], the following stages [I] to [III] are performed in succession: the stage [I] of bringing the component [A-1], the component [B] and the component [C] into contact with one another to produce a contact product (1); the stage [II] of washing the contact product (1) using an inert hydrocarbon solvent to produce a washed product; and the stage [III] of bringing the washed product into contact with the component [A-2] to produce a contact product (2); wherein [A-1] denotes a compound (with a bisindenyl structure) represented by general formula (a1); [A-2] denotes a compound (e.g., with a biscyclopentadienyl structure) represented by general formula (a2); [B] denotes an ion-exchangeable layered silicate [B-4] or the like; and [C] denotes an organic aluminum compound. <P>COPYRIGHT: (C)2012,JPO&INPIT |
