High activity catalyst for high molecular weight polyolefins

Details High activity catalyst for high molecular weight polyolefins High activity catalyst for high molecular weight polyolefins

2005-03-15

2005-03-15

Choi, Ling-Sui (Department: 1713)

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

Catalyst or precursor therefor

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

C502S115000, C502S128000, C502S132000, C502S119000, C502S108000, C526S124100, C526S124200, C526S124300, C526S123100, C526S348000

Reexamination Certificate

active

06867160

ABSTRACT:
By controlling the hold up times and temperatures for mixing the components of aluminum, titanium and magnesium based catalyst for solution polymerization it is possible to prepare a catalyst having a high activity, which prepares high molecular weight polyolefins. Generally, catalyst loses activity and produces lower molecular weight polymer at higher temperatures. The catalyst of the present invention permits comparable polymers to be produced at higher reaction temperatures.

REFERENCES:
patent: 5492876 (1996-02-01), Gillis et al.
patent: 5589555 (1996-12-01), Zboril et al.
patent: 660869 (1963-04-01), None
patent: 703704 (1965-02-01), None

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