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US 8,536,372 B2Granted
Procatalyst composition with substituted 1,2-phenylene aromatic diester internal donor and method
AssigneeDow Global Technologies LLC
InventorsLinfeng Chen, Tak W. Leung, Tao Tao
Life of this patent
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Abstract
Disclosed are procatalyst compositions having an internal electron donor which include a substituted phenylene aromatic diester and optionally an electron donor component. Ziegler-Natta catalyst compositions containing the present procatalyst compositions exhibit high activity and produce propylene-based olefins with broad molecular weight distribution.
Claims20
A procatalyst composition comprising:
- a combination of a magnesium moiety, a titanium moiety and an internal electron donor comprising a substituted phenylene aromatic diester having the structure (I)
- wherein R1-R14 are the same or different, and at least one of R1-R4 is selected from the group consisting of a substituted hydrocarbyl group having 1 to 20 carbon atoms, an unsubstituted hydrocarbyl group having 1 to 20 carbon atoms, and combinations thereof.
A procatalyst composition comprising:
- a combination of a magnesium moiety, a titanium moiety and an internal electron donor comprising a substituted 1,2-phenylene aromatic diester having the structure (I)
- wherein R1-R14 are the same or different;
- and
- at least two of R1-R4 are selected from the group consisting of a substituted hydrocarbyl group having 1 to 20 carbon atoms, an unsubstituted hydrocarbyl group having 1 to 20 carbon atoms, and combinations thereof.
1 more element
Dependencies are inferred from the claim text.