Catalyst system for polymerization of olefins

Details Catalyst system for polymerization of olefins Catalyst system for polymerization of olefins

2008-08-25

2011-10-25

Wu, David W (Department: 1762)

Catalyst, solid sorbent, or support therefor: product or process

Catalyst or precursor therefor

Plural component system comprising a - group i to iv metal...

C502S127000, C502S158000, C502S167000, C502S200000, C502S232000, C526S126000, C526S147000, C526S213000, C526S217000, C526S265000

Reexamination Certificate

active

08043990

ABSTRACT:
The invention relates to a catalyst system for polymerization of olefins, the catalyst system comprising a titanium-containing procatalyst carrying internal electron donor(s), an organoaluminium cocatalyst and a mixture of external electron donors, the mixture comprising a carboxylic acid ester or derivatives thereof, an alkoxy silane and a nitrogen based compound. The invention also relates to a process for polymerization of olefin(s) and to the polyolefin synthesized by the process.

REFERENCES:
patent: 4107414 (1978-08-01), Giannini et al.
patent: 5061667 (1991-10-01), Murata et al.
patent: 5102842 (1992-04-01), Smith et al.
patent: 5710229 (1998-01-01), Garoff et al.
patent: 2003/0060581 (2003-03-01), Morini et al.
patent: 2007/0032375 (2007-02-01), Campbell, Jr. et al.
patent: 2007/0032376 (2007-02-01), Chen
International Search Report dated Dec. 18, 2009 for related International Application No. PCT/IN2008/000534.

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