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Dialkenyl-tricyclic-nonaromatic/olefin polymers

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

Jianxin Kuang, Michael D. Jensen, Maziar Sardashti

USPTO - Utility Patents

Abstract

A process is provided to produce a dialkenyl-tricyclic-nonaromatic/olefin polymer. The process comprises contacting at least one dialkenyl-tricyclic-nonaromatic compound, at least one olefin, at least one titanium complex, and at least one aluminoxane in a polymerization zone under polymerization conditions to form the dialkenyl-tricyclic-nonaromatic/olefin polymer.

Claims

1. A process for producing a polymer of at least one alpha-olefin and at least one dialkenyl-tricyclic-nonaromatic compound, wherein the polymer is soluble in trichlorobenzene at 70° C. comprising contacting monomers consisting essentially of at least one alpha-olefin having 2 to 20 carbon atoms and at least one dialkenyl-tricyclic-nonaromatic compound of the formula

under polymerization conditions in the presence of a catalyst composition consisting essentially of the product resulting from the combination of at least one aluminoxane and at least one titanium complex which is a metallocene having only one cyclodienyl group pi-bonded to the titanium wherein no substituents of the cyclodienyl group are bonded to the titanium.

2. A process according to claim 1 wherein said titanium complex is selected from the group consisting of

5-cyclopentadienyl(2,6-di-tert-butyl-4-methylphenoxy)titanium(IV) dichloride, bis(

5-cyclopentadienyldichlorotitanium) oxide,

5-cyclopentadienyl(3,5-di-tert-butylphenoxy)titanium(IV) dichloride, and

5-cyclopentadienyl(N,N-bis(trimethylsilyl)amido)titanium(IV) dichloride, and

5-cyclopentadienyl titanium(IV) trichloride, and mixtures thereof.

3. A process according to claim 2 carried out under solution polymerization conditions.

4. A process according to claim 2 wherein ethylene is copolymerized with dicyclopentadiene.

5. A process according to claim 4 wherein the titanium complex has a ligand which includes an oxygen bonded to the titanium.

6. A process according to claim 5 which uses

5-cyclopentadienyl(2,6-di-tert-butyl-4-methylphenoxy)titanium(IV) dichloride.

7. A process according to claim 5 which uses bis(

5-cyclopentadienyldichlorotitanium) oxide.

8. A process according to claim 5 which uses

5-cyclopentadienyl(3,5-di-tert-butylphenoxy)titanium(IV) dichloride.

9. A process according to claim 4 which uses

5-cyclopentadienyl titanium trichloride.

10. A process according to claim 4 which produces a polymer having cyclic units in which a double bond of the divinyl-dicyclo-nonaromatic compound remains.