Pipe made from metathesis polymerized olefins
AssigneeCymetech, LLC and A.O. Smith Corporation
InventorsMark M. Warner, Steven D. Drake, Larry L. Cagle, Charles S. Woodson
Life of this patent
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Abstract
Thermosetting resin pipes and pipe fittings are provided which are prepared by polymerizing a cyclic olefin monomer in the presence of a ruthenium or osmium metathesis polymerization catalyst. These articles may be prepared by various methods, such as centrifugal casting. Reinforced articles may also be prepared by filament winding.
Claims22
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.
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.
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.
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.
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.
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.
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.
Dependencies are inferred from the claim text.