Titanium trichloride catalyst component for propylene polymerization
January 25, 1999. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3825524 Catalyst for polymerization of olefins and process for preparing the same Process for the production of a catalyst component for use in the polymerization of alpha olefins Process for the production of a catalyst component for use in the polymerization of -olefins Process for forming high performance titanium trichloride olefin polymerization catalyst components Process for the production of a catalyst component for use in the polymerization of alphaolefins Process for the production of a catalyst component for use in the polymerization of -olefins Olefine polymerisation process and catalyst Patent #: 4136243 InventorAssigneeApplicationNo. 06/006970 filed on 01/25/1979US Classes:502/107, Including heating to higher temperature502/111, Utilizing water or compound containing hydroxy bonded to carbon526/139, Non-metal material is organic phosphorus-containing compound526/140, Non-metal material is organic sulfur-containing compound526/141, Non-metal material is organic nitrogen-containing compound526/142, Non-metal material is organic oxygen-containing compound526/143Non-metal organic oxygen compound is halogen-containingExaminersPrimary: Garvin, Patrick P.Attorney, Agent or FirmInternational ClassesC08F 10/00 (20060101)C08F 10/06 (20060101) AbstractAn improved titanium trichloride catalyst component is prepared by treating a crude titanium trichloride composition with two different electron donor compounds via successive treatment with first one of the donor compounds and then with the other. The treated composition provides greater stereospecificity in the polymerization and copolymerization of propylene. |
| ||||||||||||||
