Polyolefin blends containing reactive agents
CA 1262979 C · Owner: Du Pont Canada Inc. · Inventors: White, George
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A polyolefin blend comprising in physical, admixture, a major portion of particles of a first polyethylene and a minor portion of particles of a composition of a second polyethylene, is disclosed. The first polyethylene is selected from the group consisting of homopolymers of ethylene and copolymers of ethylene and at least one C4 - C10 higher alpha-olefin and the second, polyethylene is a copolymer of ethylene and at least one C4 - C10 higher alpha-olefin having a density of at least 0.890 g/cm3, especially at least 0.910 g/cm3 and a melt, index of at least 40 dg/min. The density of the second polyethylene is at least about 0.005 g/cm3 lower than that of the first polyethylene and the melt …
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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
- Granted November 14, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 14, 2006.
- 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.