| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method for producing a metallocene pre-polymerization catalyst, which has a high polymerization activity and a good powder property. <P>SOLUTION: The pre-polymerization catalyst uses a periodic table group 4 transition metal compound represented by formula, wherein E<SP POS="POST">11</SP>and E<SP POS="POST">12</SP>are each independently a cyclopentadienyl group or the like; Q<SP POS="POST">11</SP>is a 1-20C divalent hydrocarbon or the like; M<SP POS="POST">11</SP>is zirconium or the like; and X<SP POS="POST">11</SP>and Y<SP POS="POST">11</SP>are each independently a hydrogen atom or the like. <P>COPYRIGHT: (C)2013,JPO&INPIT |
