Catalytic preparation of carbon monoxide/ethylene/secondary ethylenically unsaturated hydrocarbon terpolymer
CA 1316288 C · Owner: Drent, Eit · Inventors: Drent, Eit
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Novel copolymers of carbon monoxide with ethene and with one or more other .alpha.-olefinically unsaturated hydrocarbons prepared by the copolymerization of carbon monoxide with ethene and with one or more unsaturated hydrocarbons (A) which contain fewer than 20 carbon atoms and have the general formula CH2=C(R6)(CHR7R8), wherein R6 represents a hydrocarbyl group and R7 and R8 represent hydrogen and/or hydrocarbyl groups. The copolymers have a linear structure and they are made up of units of the formula -CO-(C2H4)- and units of the general formula -CO-(A')wherein A' represents a monomer unit originating in a monomer A used. The copolymers have melting points of between 150 and 245°C which …
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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 April 13, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 13, 2010.
- 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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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.