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Method for producing supported metallocene catalyst and olefin polymerization process using the same

Imported: 23 Feb '17 | Published: 22 Oct '02

Bun-Yeoul Lee, Jae-Seung Oh

USPTO - Utility Patents

Abstract

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.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

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:

FIG. 1 is a graph showing the relation with hydroxyl group of silica surface and activity of catalyst.

Claims

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 claim 1, wherein the metallocene moiety comprises a chemical structure of Formula 2 or Formula 3:

(C

5R

3

m)

pB

s(C

5R

3

M)MQ

3−p  [Formula 2]

3. The metallocene composition of claim 2, wherein the organic radical for R

3 is of 1 to 20 carbon atoms and selected from the group consisting of an alky radical, an arylalkyl radical, an alkylaryl radical, an aryl radical, and an alkoxy radical, and wherein the metalloid radical for R

3 is of metal of Group 14 (Ivb in the previous IUPAC form) substituted with a hydrocarbon group, a non-substituted cyclopentadienyl or substituted cyclopentadienyl ligand in which two adjacent carbon atoms are joined together to form one or more C

4-C

8 rings by a hydrocarbon radical.

4. A method of preparing a supported metallocene composition, the method comprising:

5. The method of claim 4, wherein the provision of the support composition comprising a double oxygen siloxane connection comprises:

6. The method of claim 4, wherein the metallocene moiety comprises a chemical structure of Formula 2 or Formula 3:

(C

5R

3

m)

pB

s(C

5R

3

m)MQ

3−p  [Formula 2]

7. The method of claim 6, wherein the organic radical for R

3 is of 1 to 20 carbon atoms and selected from the group consisting of an alky radical, an arylalkyl radical, an alkylaryl radical, an aryl radical, and an alkoxy radical, and wherein the metalloid radical for R

3 is of metal of Group 14 (Ivb in the previous IUPAC form) substituted with a hydrocarbon group, a non-substituted cyclopentadienyl or substituted cyclopentadienyl ligand in which two adjacent carbon atoms are joined together to form one or more C

4-C

8 rings by a hydrocarbon radical.

8. The method of claim 6, wherein in Formula 2, B covalent-bonds the two cyclopentadienyl ligands, and wherein in Formula 3, B covalent-bonds the cyclopentadienyl ligand and JR

4

z-y.

9. The method of claim 6, wherein the organic radical for R

4 is of 1 to 20 carbon atoms and selected from the group consisting of an alkyl radical, an alkenyl radical, an arylalkyl radical, an alkylaryl radical, and an aryl radical.

10. The method of claim 6, wherein the organic radical for Q is of 1 to 20 carbon atoms and selected from the group consisting of an alkyl radical, an alkenyl radical, an arylalkyl radical, an alkylaryl radical, an aryl radical, and alkylidene radical.

11. The method of claim 4, wherein the provision of the metallocene compound comprises substituting a hydrogen radical in R

3, R

4 and B of a compound of either Formula 2 or Formula 3 with at least one radical of Formula 1 as appearing below:

wherein R

1 is a hydrogen radical, a halogen radical, or an organic radical, and wherein R

2 is an organic radical.

12. A method of polymerizing an olefin, comprising:

13. The method of claim 12, wherein the polymerization is carried out in the further presence of a cocatalyst.

14. The method of claim 12, wherein the cocatalyst comprises a compound of Formula 4, Formula 5, Formula 6, or Formula 7 as appearing below:

—[Al(R

5)—O]

a—  [Formula 4]

Al(R

5)

3  [Formula 5]

wherein R

5 is a halogen radical or a hydrocarbon radical, wherein the R

5's can be either same or different, and wherein a is an integral number greater than 2;

[L-H]

+[NE

4]

  [Formula 6]

[L]

+[NE

4]

  [Formula 7]

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.