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US 11,001,650 B2Granted
Electron donor for polyolefin polymerization catalysts and uses thereof
AssigneeBraskem America, Inc.
InventorsBinh Thanh Nguyen, Jonas Alves Fernandes
Life of this patent
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Abstract
Disclosed in certain embodiments is an electron donor for a polyolefin polymerization catalyst. In some embodiments, a solid catalyst component includes a metal component and the electron donor that form a catalyst on a support.
Claims10
A polyolefin catalyst comprising an aluminum alkyl, a metal component, and an electron donor of Formula II.a, III.a., III.b., IV.a., or IV.b.:
A method for producing polypropylene, the method comprising:
- forming a reaction mixture by mixing a silane component with a catalyst, the catalyst component comprising a titanium catalyst, an electron donor, and a magnesium halide;
- and
- adding propylene to the reaction mixture to form a polypropylene batch, wherein a polydispersity index (PI) of the polypropylene batch is greater than 3, wherein a xylene solubles content of the polypropylene batch is less than 8% XS, and wherein a melt flow index of the polypropylene is greater than 2 g/10 min;
- wherein the electron donor is of Formula II.a, III.a., III.b., IV.a., or IV.b.:
1 more element
Dependencies are inferred from the claim text.