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US 8,288,585 B2Granted
Procatalyst composition with substitute 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.
Claims6
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, each of R1-R14 is selected from the group consisting of hydrogen, a substituted hydrocarbyl group having 1 to 20 carbon atoms, an unsubstituted hydrocarbyl group having 1 to 20 carbon atoms, an alkoxy group having 1 to 20 carbon atoms, a heteroatom, and combinations thereof;
- 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;
- and
- R1 is a methyl group and R3 is a t-butyl group.
2 more elements
A catalyst composition comprising:
- a procatalyst composition comprising a substituted phenylene aromatic diester having the structure (I)
- wherein R1 is a methyl group and R3 is a t-butyl group;
- and
- a cocatalyst.
1 more element
Dependencies are inferred from the claim text.