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Title:
凝集した金属酸化物/粘土支持体-活性化剤を用いたメタロセンおよび拘束幾何触媒系そしてそれらの製造方法
Document Type and Number:
Japanese Patent JP4886952
Kind Code:
B2
Abstract:
The present invention is directed to a coordinating catalyst system comprising at least one metallocene or constrained geometry pre-catalyst transition metal compound, (e.g., di-(n-butylcyclopentadienyl) zirconium dichloride), at least one support-activator (e.g., spray dried silica/clay agglomerate), and optionally at least one organometallic compound (e.g., triisobutyl aluminum), in controlled amounts, and methods for preparing the same. The resulting catalyst system exhibits enhanced activity for polymerizing olefins and yields polymer having very good morphology.

Inventors:
Sea, Keng-You
Kearney, Michael Jay
Denton, Dane A
Application Number:
JP2001535419A
Publication Date:
February 29, 2012
Filing Date:
October 19, 2000
Export Citation:
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Assignee:
W. R. Grace and Company-Connecticut
International Classes:
C08F4/645; C08F4/02; C08F4/605; C08F4/619; C08F4/6192; C08F4/642; C08F10/00; C08F10/02; C08F4/659; C08F4/6592; C08F110/02
Domestic Patent References:
JP2003515620A2003-05-07
JPH09278818A1997-10-28
JPH115810A1999-01-12
Attorney, Agent or Firm:
Patent business corporation Odashima patent office