Imported: 23 Feb '17 | Published: 22 Oct '02
USPTO - Utility Patents
The present invention relates to a method for producing supported metallocene catalyst and an olefin polymerization process using same, and more particularly to a method for manufacturing supported metallocene catalyst by reacting metallocene catalyst having an alkoxysilane group at a part of a ligand with a support having a highly reactive siloxane group at the surface, and the olefin polymerization process using the same.
A more complete appreciation of the invention, and many of the attendant advantages thereof, will be readily apparent as the same becomes better understood by reference to the following detailed description when considered in conjunction with the accompanying graph, wherein:
1. A supported metallocene composition, comprising a support composition and a metallocene moiety bonded to the support composition, wherein the support composition comprises less than 0.5 mmol/g hydroxyl groups per gram of support composition, wherein the support composition comprises a single oxygen siloxane connection, in which two silicons are bonded with one intervening oxygen as shown below:
wherein the metallocene moiety is bonded to one of the silicon in the single oxygen siloxane connection, wherein a hydrocarboxy group is bonded to the other silicon in the single oxygen siloxane connection, and wherein the hydrocarboxy group is selected from the group consisting of alkoxy, arylalkoxy, alkylaroxy and aroxy.
2. The metallocene composition of
3. The metallocene composition of
4. A method of preparing a supported metallocene composition, the method comprising:
5. The method of
6. The method of
7. The method of
8. The method of
9. The method of
10. The method of
11. The method of
12. A method of polymerizing an olefin, comprising:
13. The method of
14. The method of
wherein L is a neutral or a positive ionic Lewis base, wherein H is a hydrogen atom, wherein N is an element of Group 13 (IIIb in the previous IUPAC form), wherein E is an aryl radical, and wherein E's can be either same or different.