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US 2014/0274668 A1Published application
Enhanced procatalyst composition and process
AssigneeW. R. Grace & Co.-Conn.
InventorsKelly Gonzalez, Clark C. Williams, Linfeng Chen
Life of this patent
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Abstract
Disclosed herein are processes for preparing procatalyst compositions and polymers, i.e., propylene-based polymers, produced therefrom. The present procatalyst compositions improve catalyst selectivity and also increase the bulk density of the formant polymer.
Claims6
A procatalyst composition comprising:
- particles comprising a magnesium moiety, a titanium moiety, and an internal electron donor comprising a substituted phenylene aromatic diester;
- and
- the particles having a D50 from about 10 μm to about 25 μm.
Dependencies are inferred from the claim text.