Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Silicon containing or process of making
Reexamination Certificate
2007-08-21
2007-08-21
Choi, Ling-Sui (Department: 1713)
Catalyst, solid sorbent, or support therefor: product or process
Catalyst or precursor therefor
Silicon containing or process of making
C502S103000, C502S133000, C502S132000, C502S087000, C502S125000, C526S123100, C526S123100, C526S123100, C526S129000, C526S348000
Reexamination Certificate
active
11441505
ABSTRACT:
Improved catalyst compositions, and polymerization processes using such improved catalyst compositions, are provided. An example of an improved catalyst composition is a supported catalyst system that includes at least one titanium compound, at least one magnesium compound, at least one electron donor compound, at least one activator compound, and at least one silica support material, the at least one silica support material having a median particle size in the range of from 20 to 50 microns with no more than 10% of the particles having a size less than 10 microns and no more than 10% of the particles having a size greater than 50 microns and average pore diameter of at least <220 angstroms.
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Apecetche Maria A.
Awe Michael D.
Cao Phuong A.
Impelman Ryan W.
Schoeb-Wolters Ann M.
Arechederra, III Leandro
Choi Ling-Sui
Faulkner Kevin M.
Univation Technologies LLC
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