Preparation of virtually uncrosslinked polyacetylenes in film form
CA 1298152 C · Owner: Theophilou, Nicolas · Inventors: Theophilou, Nicolas; Naarmann, Herbert
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
18 - 0.2 0050/39198, Abstract of the Disclosure: Virtually uncrosslinked polyacetylenes in film form are prepared by polymerization of acetylene using a liquid catalyst system consisting of an organicaluminum compound and a titanate in the form of a solution in a viscous inert liquid on a substrate to which the catalyst solution is applied by a, process in which, after the polymerization the polymer, is treated with a strong reducing agent which is inert to the organoaluminum catalyst component the polymer is, if desired, oriented and is freed from residual catalyst and reducing agent by washing with a liquid doped with, a strong electron acceptor or electron donor in a conventional manner …
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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 March 31, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 31, 2009.
- 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
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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.