Claims
- 1. A polyolefin article comprising:
a polyolefin prepared by polymerizing a cyclic olefin monomer in the presence of a metathesis polymerization catalyst which comprises a ruthenium complex catalyst or an osmium complex catalyst, wherein the article is a pipe or a pipe fitting.
- 2. A method of making a polyolefin article, the method comprising the steps of:
a) adding a Ru of Os metathesis catalyst to a cyclic olefin monomer to form a reaction mixture; b) forming the reaction mixture into a shape for the article, wherein the article is a pipe or a pipe fitting; and c) allowing the formed reaction mixture to polymerize under polymerization conditions.
- 3. The method of claim 2 wherein the cyclic olefin monomer comprises a norbornene-type monomer.
- 4. The method of claim 2 wherein the cyclic olefin monomer comprises dicyclopentadiene.
- 5. The method of claim 2 wherein the reaction mixture is formed into the shape by feeding the reaction mixture into a spinning mold prior to allowing the reaction mixture to polymerize.
- 6. The method of claim 2 further comprising the step of incorporating a reinforcing material with the reaction mixture prior to allowing the reaction mixture to polymerize.
- 7. The method of claim 6 wherein the reinforcing material comprises fiberglass.
- 8. The method of claim 2 wherein the polymerization is carried out in ambient air.
- 9. The method of claim 2 wherein the polymerization is carried out at about ambient pressure.
- 10. A centrifugally cast plastic article formed by a process comprising the steps of:
a) admixing a Ru or Os metathesis polymerization catalyst with a cyclic olefin monomer to form a reaction mixture; b) feeding the reaction mixture into a spinning mold; and c) allowing the reaction mixture to polymerize.
- 11. The article of claim 10 wherein the cyclic olefin monomer comprises a norbornene-type monomer.
- 12. The article of claim 10 wherein the cyclic olefin monomer comprises dicyclopentadiene.
- 13. The article of claim 10 wherein the article is a pipe or a pipe fitting.
- 14. The article of claim 10 wherein the article includes a reinforcing material embedded therein.
- 15. The article of claim 14 wherein the reinforcing material comprises fiberglass.
- 16. A method of manufacturing polyolefin pipe or fittings by filament winding, the method comprising the steps of:
a) admixing a Ru or Os metathesis catalyst with a cyclic olefin monomer to form a reaction mixture; b) coating at least a portion of a reinforcing material with the reaction mixture; c) winding the coated reinforcing material around a mandrel; and d) allowing the olefin monomer to polymerize while the coated reinforcing material is wound around the mandrel to form a polyolefin pipe or a pipe fitting.
- 17. The method of claim 16 wherein the method is carried out in ambient air.
- 18. A filament wound polyolefin pipe or fitting comprising a polymerized olefin monomer and a reinforcing material, the pipe being formed by:
a) adding a Ru or Os metathesis catalyst to a cyclic olefin monomer to form a reaction mixture; b) coating at least a portion of the reinforcing material with the reaction mixture; c) winding the coated reinforcing material around a mandrel; and d) allowing the olefin monomar to polymerize while the coated reinforcing material is wound around the mandrel to form a polyolefin pipe or fitting.
- 19. The filament wound polyolefin pipe or fitting of claim 18 wherein the olefin monomer comprises dicyclopentadiene.
- 20. The filament wound polyolefin pipe or fitting of claim 18 wherein the catalyst is of formula:
- 21. A method of manufacturing a polyolefin pipe by pultrusion, the method comprising the steps of:
a) admixing a Ru or Os metathesis catalyst with a cyclic olefin monomer to form a reaction mixture; b) pulling a reinforcing material into a die where the reinforcing material is formed into a pipe profile; c) before or after step b), at least partially coating the reinforcing material with the reaction mixture; and d) curing the reaction mixture to form the polyolefin pipe.
- 22. A pultruded polyolefin pipe comprising a polymerized olefin monomer and a reinforcing material, the pipe being formed by:
a) admixing a Ru or Os metathesis catalyst with a cyclic olefin monomer to form a reaction mixture; b) pulling a reinforcing material into a die where the reinforcement is formed into a pipe profile; c) before or after step b), at least partially coating the reinforcing material with the reaction mixture; and d) curing the reaction mixture to form the pipe.
RELATED APPLICATION
[0001] This application claims the benefit under 35 U.S.C. Section 119 of co-pending U.S. Provisional Patent Applications Serial No. 60/058,091 filed Sept. 5, 1997 and Serial No. 60/057,959 filed Sept. 5, 1997.
Provisional Applications (2)
|
Number |
Date |
Country |
|
60058091 |
Sep 1997 |
US |
|
60057959 |
Sep 1997 |
US |
Divisions (1)
|
Number |
Date |
Country |
Parent |
09148834 |
Sep 1998 |
US |
Child |
10151356 |
May 2002 |
US |