Patent ID: 11891460
Assignee: W.R. GRACE & CO.—CONN.
Field: Macromolecular chemistry, polymers (Chemistry)
Classification: CPC C | IPC C

Claim 0:
1. An activated and non-phthalate solid catalyst component for olefin polymerization comprising a reaction product of:
(a) a halide-containing magnesium compound;
(b) a titanium compound containing titanium in an oxidation state of at least +3 and +2;
(c) an organosilicon compound containing Si—O groups;
(d) an alkylaluminum compound;
(e) a supportive electron donor comprising a monobenzoate, the supportive electron donor being present in the catalyst component in an amount from about 0.01% to about 5% by weight;
(f) at least one internal electron donor, the at least one internal electron donor being present in the catalyst component in an amount from about 1% to about 15% by weight; and
(g) a polymer formed from an alpha-olefin having the formula: CH2═CHR1, wherein R1 comprises hydrogen, or a C1 to C7 alkyl group, and being present in the catalyst component in an amount from about 0.3 g to about 200 g of polymer per gram of catalyst component.