Catalyst compositions and polyolefins for extrusion coating applications
CA 2805929 C · Owner: Chevron Phillips Chemical Company Lp · Inventors: Martin, Joel L.; Jensen, Michael D.; Benham, Elizabeth A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention relates to the field of olefin polymerization catalyst compositions and methods for the polymerization and copolymerization of olefins including polymerization methods using a supported catalyst composition. In one aspect the present invention encompasses a catalyst composition comprising the contact product of a first metallocene compound a second metallocene compound, at least one chemically-treated solid oxide and at least one organoaluminum compound. The new resins were characterized by useful properties in impact tear, adhesion, sealing, extruder motor loads and pressures at comparable melt index values and neck-in and draw-down.
Read the whole patent
Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed January 6, 2005 and granted April 15, 2014. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 6, 2025.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.