Manufacture of catalysts for polymerisation of olefins
CA 1113444 A · Owner: Naphtachimie · Inventors: Bailly, Jean C.A.; Sandis, Stylianos S.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Process for the preparation of titanium trichloride catalysts which comprises reducing titanium tetrachloride with an organoaluminium compound in the presence of an ether. These catalysts find use in polymerising olefins, such as propylene and provide stereo-regular polymers.
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
- Granted December 1, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 1, 1998.
- 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.