Procatalyst composition with substituted 1,2-phenylene aromatic diester internal donor and method
View Patent ↗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.
1. 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 R 1 -R 14 are the same or different, and at least one of R 1 -R 4 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.
2. The procatalyst composition of claim 1 wherein each of R 5 -R 14 is hydrogen.
3. The procatalyst composition of claim 1 wherein at least one of R 1 -R 4 and at least one of R 5 -R 14 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, an alkoxy group having 1 to 20 carbon atoms, a heteroatom, and combinations thereof.
4. The procatalyst composition of claim 1 wherein at least one of R 1 -R 4 , at least one of R 5 -R 9 , and at least one of R 10 -R 14 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, an alkoxy group having 1 to 20 carbon atoms, a heteroatom, and combinations thereof.
5. The procatalyst composition of claim 1 wherein each of R 1 , R 3 and R 4 is hydrogen and R 2 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.
6. The procatalyst composition of claim 5 wherein each of R 5 -R 14 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 halogen, and combinations thereof.
7. The procatalyst composition of claim 1 wherein each of R 2 , R 3 and R 4 is hydrogen and R 1 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.
8. The procatalyst composition of claim 7 wherein at least one of R 5 -R 14 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 halogen, and combinations thereof.
9. The procatalyst composition of claim 1 wherein R 1 is a methyl group and each of R 5 -R 14 is hydrogen.
10. 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 R 1 -R 14 are the same or different; and
at least two of R 1 -R 4 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.
11. The procatalyst composition of claim 10 wherein each of R 5 -R 14 is hydrogen.
12. The procatalyst composition of claim 10 wherein each of R 1 and R 3 is selected from the group consisting of a C 1 -C 8 alkyl group, a C 3 -C 6 cycloalkyl group, a substituted C 3 -C 6 cycloalkyl group, and combinations thereof.
13. The procatalyst composition of claim 10 wherein each of R 1 and R 3 is an isopropyl group.
14. The procatalyst composition of claim 10 wherein each of R 2 and R 4 is hydrogen and each of R 1 and R 3 is selected from the group consisting of substituted hydrocarbyl group having 1 to 20 carbon atoms, an unsubstituted hydrocarbyl group having 1 to 20 carbon atoms, and combinations thereof.
15. The procatalyst composition of claim 14 wherein each of R 5 -R 14 is hydrogen.
16. The procatalyst composition of claim 10 wherein at least one of R 5 -R 14 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, an alkoxy group having 1 to 20 carbon atoms, a halogen, and combinations thereof.
17. A catalyst composition comprising the procatalyst composition of claim 1 ;
a cocatalyst; and
an activity limiting agent comprising an aliphatic mono-carboxylic acid ester.
18. The catalyst composition of claim 17 wherein each of R 5 -R 12 is hydrogen.
19. The catalyst composition of claim 18 wherein each of R 1 and R 3 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, an alkoxy group having 1 to 20 carbon atoms, a heteroatom, and combinations thereof.
20. The catalyst composition of claim 17 comprising an external electron donor comprising an alkoxysilane.