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US 2016/0355654 A1Published application
High Activity Catalyst Supportation
AssigneeExxonMobil Chemical Patents Inc.
InventorsLubin Luo, Gregory S. Day
Life of this patent
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Abstract
This invention relates to single site catalyst supportation methods involving high temperature treatment (≧40° C., e.g., 100-130° C.) to improve catalyst activity for olefin polymerization, e.g., propylene polymerization, and to the supported catalyst systems obtained by the methods, e.g., single site catalyst systems supported on a support having high average particle size (PS≧30 μm), high surface area (SA≧200 m2/g), low pore volume (PV≦2 mL/g), and a mean pore diameter range of 1≦PD≦20 nm.
Claims25
A process, comprising:
- supporting an activator for a single site catalyst precursor compound on a support, the support having an average particle size of from 5 μm to 500 μm, a specific surface area of 10 m2/g or more, a pore volume of from 0.1 to 4 mL/g, and a mean pore diameter of from 1 to 100 nm (10 to 200 Å);
- and
- contacting the supported activator and a single site catalyst precursor compound to form a supported catalyst system;
- wherein the supporting, the contacting, or both, are at a temperature above 40° C.
1 more element
Dependencies are inferred from the claim text.