Olefin polymerization catalyst, method for producing the same and method for producing olefinic polymer
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United States of America Patent
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May 13, 2003
Grant Date -
N/A
app pub date -
Oct 4, 2000
filing date -
Feb 4, 1999
priority date (Note) -
Expired
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Abstract
A catalyst for olefin polymerization, which is obtained by contacting (A) a compound of a transition metal of Groups 4 to 6 of the Periodic Table, (B) an organoaluminiumoxy compound, and optionally (C) a carrier with each other, and for which they are exposed to elastic waves at least in any step of contacting them with each other. Preferably, the elastic waves are ultrasonic waves falling between 1 and 1000 kHz. Provided are high-activity metallocene catalysts for olefin polymerization. As having high polymerization activity, they are favorable to vapor-phase or slurry polymerization for producing olefinic polymers.
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