Homogeneous addition copolymers of ethylene and cycloolefin monomers
CA 1339232 C · Owner: Ware, James Thomas · Inventors: Ware, James Thomas; Minchak, Robert John
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention provides a method for producing addition copolymers of ethylene and cycloolefin monomers of the norbornene-type, such as norbornene and tetracyclododecene. Copolymers having a uniform structure with uniform glass transition temperature values are provided by performing the copolymerization reaction in bulk with a catalyst system soluble in the cycloolefin monomers.
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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 August 5, 1997. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 5, 2014.
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Timeline
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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.